/usr/share/gtk-doc/html/cogl-2.0-experimental/cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html is in libcogl-doc 1.10.0-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>CoglFramebuffer: The Framebuffer Interface</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.76.1">
<link rel="home" href="index.html" title="Cogl 2.0 Reference Manual">
<link rel="up" href="cogl-framebuffer-apis.html" title="Framebuffers">
<link rel="prev" href="cogl-framebuffer-apis.html" title="Framebuffers">
<link rel="next" href="cogl-2.0-experimental-Offscreen-Framebuffers.html" title="Offscreen Framebuffers">
<meta name="generator" content="GTK-Doc V1.18 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
<tr valign="middle">
<td><a accesskey="p" href="cogl-framebuffer-apis.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
<td><a accesskey="u" href="cogl-framebuffer-apis.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
<th width="100%" align="center">Cogl 2.0 Reference Manual</th>
<td><a accesskey="n" href="cogl-2.0-experimental-Offscreen-Framebuffers.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
</tr>
<tr><td colspan="5" class="shortcuts">
<a href="#cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.synopsis" class="shortcut">Top</a>
|
<a href="#cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry">
<a name="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.top_of_page"></a>CoglFramebuffer: The Framebuffer Interface</span></h2>
<p>CoglFramebuffer: The Framebuffer Interface — A common interface for manipulating framebuffers</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer">CoglFramebuffer</a>;
#define <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#COGL-FRAMEBUFFER:CAPS" title="COGL_FRAMEBUFFER()">COGL_FRAMEBUFFER</a> (X)
<span class="returnvalue">gboolean</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-allocate" title="cogl_framebuffer_allocate ()">cogl_framebuffer_allocate</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">GError</span> **error</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-width" title="cogl_framebuffer_get_width ()">cogl_framebuffer_get_width</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-height" title="cogl_framebuffer_get_height ()">cogl_framebuffer_get_height</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-viewport" title="cogl_framebuffer_set_viewport ()">cogl_framebuffer_set_viewport</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> width</code></em>,
<em class="parameter"><code><span class="type">float</span> height</code></em>);
<span class="returnvalue">float</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-viewport-x" title="cogl_framebuffer_get_viewport_x ()">cogl_framebuffer_get_viewport_x</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">float</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-viewport-y" title="cogl_framebuffer_get_viewport_y ()">cogl_framebuffer_get_viewport_y</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">float</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-viewport-width" title="cogl_framebuffer_get_viewport_width ()">cogl_framebuffer_get_viewport_width</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">float</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-viewport-height" title="cogl_framebuffer_get_viewport_height ()">cogl_framebuffer_get_viewport_height</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-viewport4fv" title="cogl_framebuffer_get_viewport4fv ()">cogl_framebuffer_get_viewport4fv</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> *viewport</code></em>);
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="returnvalue">CoglPixelFormat</span></a> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-color-format" title="cogl_framebuffer_get_color_format ()">cogl_framebuffer_get_color_format</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-red-bits" title="cogl_framebuffer_get_red_bits ()">cogl_framebuffer_get_red_bits</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-green-bits" title="cogl_framebuffer_get_green_bits ()">cogl_framebuffer_get_green_bits</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-blue-bits" title="cogl_framebuffer_get_blue_bits ()">cogl_framebuffer_get_blue_bits</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="returnvalue">CoglColorMask</span></a> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-color-mask" title="cogl_framebuffer_get_color_mask ()">cogl_framebuffer_get_color_mask</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-color-mask" title="cogl_framebuffer_set_color_mask ()">cogl_framebuffer_set_color_mask</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a> color_mask</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-resolve-samples" title="cogl_framebuffer_resolve_samples ()">cogl_framebuffer_resolve_samples</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-resolve-samples-region" title="cogl_framebuffer_resolve_samples_region ()">cogl_framebuffer_resolve_samples_region</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>);
<span class="returnvalue">CoglContext</span> * <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-context" title="cogl_framebuffer_get_context ()">cogl_framebuffer_get_context</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-clear" title="cogl_framebuffer_clear ()">cogl_framebuffer_clear</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">unsigned long </span> buffers</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *color</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-clear4f" title="cogl_framebuffer_clear4f ()">cogl_framebuffer_clear4f</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">unsigned long </span> buffers</code></em>,
<em class="parameter"><code><span class="type">float</span> red</code></em>,
<em class="parameter"><code><span class="type">float</span> green</code></em>,
<em class="parameter"><code><span class="type">float</span> blue</code></em>,
<em class="parameter"><code><span class="type">float</span> alpha</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-read-pixels-into-bitmap" title="cogl_framebuffer_read_pixels_into_bitmap ()">cogl_framebuffer_read_pixels_into_bitmap</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglReadPixelsFlags" title="enum CoglReadPixelsFlags"><span class="type">CoglReadPixelsFlags</span></a> source</code></em>,
<em class="parameter"><code><span class="type">CoglBitmap</span> *bitmap</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-read-pixels" title="cogl_framebuffer_read_pixels ()">cogl_framebuffer_read_pixels</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
<em class="parameter"><code><span class="type">guint8</span> *pixels</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-dither-enabled" title="cogl_framebuffer_set_dither_enabled ()">cogl_framebuffer_set_dither_enabled</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> dither_enabled</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-dither-enabled" title="cogl_framebuffer_get_dither_enabled ()">cogl_framebuffer_get_dither_enabled</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-primitive" title="cogl_framebuffer_draw_primitive ()">cogl_framebuffer_draw_primitive</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Primitives.html#CoglPrimitive" title="CoglPrimitive"><span class="type">CoglPrimitive</span></a> *primitive</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-attributes" title="cogl_framebuffer_draw_attributes ()">cogl_framebuffer_draw_attributes</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code><span class="type">CoglAttribute</span> **attributes</code></em>,
<em class="parameter"><code><span class="type">int</span> n_attributes</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-vdraw-attributes" title="cogl_framebuffer_vdraw_attributes ()">cogl_framebuffer_vdraw_attributes</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code>...</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-indexed-attributes" title="cogl_framebuffer_draw_indexed_attributes ()">cogl_framebuffer_draw_indexed_attributes</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code><span class="type">CoglIndices</span> *indices</code></em>,
<em class="parameter"><code><span class="type">CoglAttribute</span> **attributes</code></em>,
<em class="parameter"><code><span class="type">int</span> n_attributes</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-vdraw-indexed-attributes" title="cogl_framebuffer_vdraw_indexed_attributes ()">cogl_framebuffer_vdraw_indexed_attributes</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code><span class="type">CoglIndices</span> *indices</code></em>,
<em class="parameter"><code>...</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-rectangle" title="cogl_framebuffer_draw_rectangle ()">cogl_framebuffer_draw_rectangle</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-textured-rectangle" title="cogl_framebuffer_draw_textured_rectangle ()">cogl_framebuffer_draw_textured_rectangle</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>,
<em class="parameter"><code><span class="type">float</span> s_1</code></em>,
<em class="parameter"><code><span class="type">float</span> t_1</code></em>,
<em class="parameter"><code><span class="type">float</span> s_2</code></em>,
<em class="parameter"><code><span class="type">float</span> t_2</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-multitextured-rectangle" title="cogl_framebuffer_draw_multitextured_rectangle ()">cogl_framebuffer_draw_multitextured_rectangle</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *tex_coords</code></em>,
<em class="parameter"><code><span class="type">int</span> tex_coords_len</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-rectangles" title="cogl_framebuffer_draw_rectangles ()">cogl_framebuffer_draw_rectangles</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *verts</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> n_rects</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-textured-rectangles" title="cogl_framebuffer_draw_textured_rectangles ()">cogl_framebuffer_draw_textured_rectangles</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *coordinates</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> n_rectangles</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-finish" title="cogl_framebuffer_finish ()">cogl_framebuffer_finish</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-push-matrix" title="cogl_framebuffer_push_matrix ()">cogl_framebuffer_push_matrix</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-pop-matrix" title="cogl_framebuffer_pop_matrix ()">cogl_framebuffer_pop_matrix</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-identity-matrix" title="cogl_framebuffer_identity_matrix ()">cogl_framebuffer_identity_matrix</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-scale" title="cogl_framebuffer_scale ()">cogl_framebuffer_scale</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> z</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-translate" title="cogl_framebuffer_translate ()">cogl_framebuffer_translate</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> z</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-rotate" title="cogl_framebuffer_rotate ()">cogl_framebuffer_rotate</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> angle</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> z</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-transform" title="cogl_framebuffer_transform ()">cogl_framebuffer_transform</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-modelview-matrix" title="cogl_framebuffer_get_modelview_matrix ()">cogl_framebuffer_get_modelview_matrix</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-modelview-matrix" title="cogl_framebuffer_set_modelview_matrix ()">cogl_framebuffer_set_modelview_matrix</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-perspective" title="cogl_framebuffer_perspective ()">cogl_framebuffer_perspective</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> fov_y</code></em>,
<em class="parameter"><code><span class="type">float</span> aspect</code></em>,
<em class="parameter"><code><span class="type">float</span> z_near</code></em>,
<em class="parameter"><code><span class="type">float</span> z_far</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-frustum" title="cogl_framebuffer_frustum ()">cogl_framebuffer_frustum</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> left</code></em>,
<em class="parameter"><code><span class="type">float</span> right</code></em>,
<em class="parameter"><code><span class="type">float</span> bottom</code></em>,
<em class="parameter"><code><span class="type">float</span> top</code></em>,
<em class="parameter"><code><span class="type">float</span> z_near</code></em>,
<em class="parameter"><code><span class="type">float</span> z_far</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-orthographic" title="cogl_framebuffer_orthographic ()">cogl_framebuffer_orthographic</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>,
<em class="parameter"><code><span class="type">float</span> near</code></em>,
<em class="parameter"><code><span class="type">float</span> far</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-get-projection-matrix" title="cogl_framebuffer_get_projection_matrix ()">cogl_framebuffer_get_projection_matrix</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-projection-matrix" title="cogl_framebuffer_set_projection_matrix ()">cogl_framebuffer_set_projection_matrix</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-push-scissor-clip" title="cogl_framebuffer_push_scissor_clip ()">cogl_framebuffer_push_scissor_clip</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-push-rectangle-clip" title="cogl_framebuffer_push_rectangle_clip ()">cogl_framebuffer_push_rectangle_clip</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-push-primitive-clip" title="cogl_framebuffer_push_primitive_clip ()">cogl_framebuffer_push_primitive_clip</a>
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Primitives.html#CoglPrimitive" title="CoglPrimitive"><span class="type">CoglPrimitive</span></a> *primitive</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_x1</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_y1</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_x2</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_y2</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-pop-clip" title="cogl_framebuffer_pop_clip ()">cogl_framebuffer_pop_clip</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="returnvalue">CoglFramebuffer</span></a> * <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-get-draw-framebuffer" title="cogl_get_draw_framebuffer ()">cogl_get_draw_framebuffer</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-set-framebuffer" title="cogl_set_framebuffer ()">cogl_set_framebuffer</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *buffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-push-framebuffer" title="cogl_push_framebuffer ()">cogl_push_framebuffer</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *buffer</code></em>);
<span class="returnvalue">void</span> <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-pop-framebuffer" title="cogl_pop_framebuffer ()">cogl_pop_framebuffer</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
</pre>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.description"></a><h2>Description</h2>
<p>
Framebuffers are a collection of buffers that can be rendered too.
A framebuffer may be comprised of one or more color buffers, an
optional depth buffer and an optional stencil buffer. Other
configuration parameters are associated with framebuffers too such
as whether the framebuffer supports multi-sampling (an anti-aliasing
technique) or dithering.
</p>
<p>
There are two kinds of framebuffer in Cogl, <span class="type">CoglOnscreen</span>
framebuffers and <span class="type">CoglOffscreen</span> framebuffers. As the names imply
offscreen framebuffers are for rendering something offscreen
(perhaps to a texture which is bound as one of the color buffers).
The exact semantics of onscreen framebuffers depends on the window
system backend that you are using, but typically you can expect
rendering to a <span class="type">CoglOnscreen</span> framebuffer will be immediately
visible to the user.
</p>
<p>
If you want to create a new framebuffer then you should start by
looking at the <span class="type">CoglOnscreen</span> and <span class="type">CoglOffscreen</span> constructor
functions, such as <a class="link" href="cogl-2.0-experimental-Offscreen-Framebuffers.html#cogl-offscreen-new-to-texture" title="cogl_offscreen_new_to_texture ()"><code class="function">cogl_offscreen_new_to_texture()</code></a> or
<code class="function">cogl_onscreen_new()</code>. The <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> interface deals with
all aspects that are common between those two types of framebuffer.
</p>
<p>
Setup of a new CoglFramebuffer happens in two stages. There is a
configuration stage where you specify all the options and ancillary
buffers you want associated with your framebuffer and then when you
are happy with the configuration you can "allocate" the framebuffer
using <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-allocate" title="cogl_framebuffer_allocate ()"><code class="function">cogl_framebuffer_allocate()</code></a>. Technically explicitly calling
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-allocate" title="cogl_framebuffer_allocate ()"><code class="function">cogl_framebuffer_allocate()</code></a> is optional for convenience and the
framebuffer will automatically be allocated when you first try to
draw to it, but if you do the allocation manually then you can
also catch any possible errors that may arise from your
configuration.
</p>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="CoglFramebuffer"></a><h3>CoglFramebuffer</h3>
<pre class="programlisting">typedef struct _CoglFramebuffer CoglFramebuffer;</pre>
</div>
<hr>
<div class="refsect2">
<a name="COGL-FRAMEBUFFER:CAPS"></a><h3>COGL_FRAMEBUFFER()</h3>
<pre class="programlisting">#define COGL_FRAMEBUFFER(X) ((CoglFramebuffer *)(X))
</pre>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-allocate"></a><h3>cogl_framebuffer_allocate ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> cogl_framebuffer_allocate (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>
Explicitly allocates a configured <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> allowing developers to
check and handle any errors that might arise from an unsupported
configuration so that fallback configurations may be tried.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>Many applications don't support any fallback options at least when
they are initially developed and in that case the don't need to use this API
since Cogl will automatically allocate a framebuffer when it first gets
used. The disadvantage of relying on automatic allocation is that the
program will abort with an error message if there is an error during
automatic allocation.</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>A pointer to a <span class="type">GError</span> for returning exceptions.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if there were no error allocating the framebuffer, else <code class="literal">FALSE</code>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-width"></a><h3>cogl_framebuffer_get_width ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_framebuffer_get_width (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Queries the current width of the given <em class="parameter"><code>framebuffer</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The width of <em class="parameter"><code>framebuffer</code></em>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-height"></a><h3>cogl_framebuffer_get_height ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_framebuffer_get_height (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Queries the current height of the given <em class="parameter"><code>framebuffer</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The height of <em class="parameter"><code>framebuffer</code></em>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-set-viewport"></a><h3>cogl_framebuffer_set_viewport ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_set_viewport (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> width</code></em>,
<em class="parameter"><code><span class="type">float</span> height</code></em>);</pre>
<p>
Defines a scale and offset for everything rendered relative to the
top-left of the destination framebuffer.
</p>
<p>
By default the viewport has an origin of (0,0) and width and height
that match the framebuffer's size. Assuming a default projection and
modelview matrix then you could translate the contents of a window
down and right by leaving the viewport size unchanged by moving the
offset to (10,10). The viewport coordinates are measured in pixels.
If you left the x and y origin as (0,0) you could scale the windows
contents down by specify and width and height that's half the real
size of the framebuffer.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>Although the function takes floating point arguments, existing
drivers only allow the use of integer values. In the future floating
point values will be exposed via a checkable feature.</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>The top-left x coordinate of the viewport origin (only integers
supported currently)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>The top-left y coordinate of the viewport origin (only integers
supported currently)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>The width of the viewport (only integers supported currently)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>The height of the viewport (only integers supported currently)</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-viewport-x"></a><h3>cogl_framebuffer_get_viewport_x ()</h3>
<pre class="programlisting"><span class="returnvalue">float</span> cogl_framebuffer_get_viewport_x (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Queries the x coordinate of the viewport origin as set using <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-viewport" title="cogl_framebuffer_set_viewport ()"><code class="function">cogl_framebuffer_set_viewport()</code></a>
or the default value which is <code class="literal">0</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The x coordinate of the viewport origin.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-viewport-y"></a><h3>cogl_framebuffer_get_viewport_y ()</h3>
<pre class="programlisting"><span class="returnvalue">float</span> cogl_framebuffer_get_viewport_y (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Queries the y coordinate of the viewport origin as set using <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-viewport" title="cogl_framebuffer_set_viewport ()"><code class="function">cogl_framebuffer_set_viewport()</code></a>
or the default value which is <code class="literal">0</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The y coordinate of the viewport origin.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-viewport-width"></a><h3>cogl_framebuffer_get_viewport_width ()</h3>
<pre class="programlisting"><span class="returnvalue">float</span> cogl_framebuffer_get_viewport_width (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Queries the width of the viewport as set using <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-viewport" title="cogl_framebuffer_set_viewport ()"><code class="function">cogl_framebuffer_set_viewport()</code></a>
or the default value which is the width of the framebuffer.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The width of the viewport.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-viewport-height"></a><h3>cogl_framebuffer_get_viewport_height ()</h3>
<pre class="programlisting"><span class="returnvalue">float</span> cogl_framebuffer_get_viewport_height
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Queries the height of the viewport as set using <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-viewport" title="cogl_framebuffer_set_viewport ()"><code class="function">cogl_framebuffer_set_viewport()</code></a>
or the default value which is the height of the framebuffer.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The height of the viewport.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-viewport4fv"></a><h3>cogl_framebuffer_get_viewport4fv ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_get_viewport4fv (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> *viewport</code></em>);</pre>
<p>
Queries the x, y, width and height components of the current viewport as set
using <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-viewport" title="cogl_framebuffer_set_viewport ()"><code class="function">cogl_framebuffer_set_viewport()</code></a> or the default values which are 0, 0,
framebuffer_width and framebuffer_height. The values are written into the
given <em class="parameter"><code>viewport</code></em> array.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>viewport</code></em> :</span></p></td>
<td>A pointer to an array of 4 floats to receive the (x, y, width, height)
components of the current viewport.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-color-format"></a><h3>cogl_framebuffer_get_color_format ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="returnvalue">CoglPixelFormat</span></a> cogl_framebuffer_get_color_format (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Queries the common <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> of all color buffers attached
to this framebuffer. For an offscreen framebuffer created with
<a class="link" href="cogl-2.0-experimental-Offscreen-Framebuffers.html#cogl-offscreen-new-to-texture" title="cogl_offscreen_new_to_texture ()"><code class="function">cogl_offscreen_new_to_texture()</code></a> this will correspond to the format
of the texture.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> framebuffer</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-red-bits"></a><h3>cogl_framebuffer_get_red_bits ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_framebuffer_get_red_bits (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Retrieves the number of red bits of <em class="parameter"><code>framebuffer</code></em>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the number of bits</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-green-bits"></a><h3>cogl_framebuffer_get_green_bits ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_framebuffer_get_green_bits (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Retrieves the number of green bits of <em class="parameter"><code>framebuffer</code></em>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the number of bits</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-blue-bits"></a><h3>cogl_framebuffer_get_blue_bits ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_framebuffer_get_blue_bits (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Retrieves the number of blue bits of <em class="parameter"><code>framebuffer</code></em>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the number of bits</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-color-mask"></a><h3>cogl_framebuffer_get_color_mask ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="returnvalue">CoglColorMask</span></a> cogl_framebuffer_get_color_mask (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Gets the current <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a> of which channels would be written to the
current framebuffer. Each bit set in the mask means that the
corresponding color would be written.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-set-color-mask"></a><h3>cogl_framebuffer_set_color_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_set_color_mask (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a> color_mask</code></em>);</pre>
<p>
Defines a bit mask of which color channels should be written to the
given <em class="parameter"><code>framebuffer</code></em>. If a bit is set in <em class="parameter"><code>color_mask</code></em> that means that
color will be written.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>color_mask</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a> of which color channels to write to
the current framebuffer.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-resolve-samples"></a><h3>cogl_framebuffer_resolve_samples ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_resolve_samples (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
When point sample rendering (also known as multisample rendering)
has been enabled via <code class="function">cogl_framebuffer_set_samples_per_pixel()</code>
then you can optionally call this function (or
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-resolve-samples-region" title="cogl_framebuffer_resolve_samples_region ()"><code class="function">cogl_framebuffer_resolve_samples_region()</code></a>) to explicitly resolve
the point samples into values for the final color buffer.
</p>
<p>
Some GPUs will implicitly resolve the point samples during
rendering and so this function is effectively a nop, but with other
architectures it is desirable to defer the resolve step until the
end of the frame.
</p>
<p>
Since Cogl will automatically ensure samples are resolved if the
target color buffer is used as a source this API only needs to be
used if explicit control is desired - perhaps because you want to
ensure that the resolve is completed in advance to avoid later
having to wait for the resolve to complete.
</p>
<p>
If you are performing incremental updates to a framebuffer you
should consider using <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-resolve-samples-region" title="cogl_framebuffer_resolve_samples_region ()"><code class="function">cogl_framebuffer_resolve_samples_region()</code></a>
instead to avoid resolving redundant pixels.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> framebuffer</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-resolve-samples-region"></a><h3>cogl_framebuffer_resolve_samples_region ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_resolve_samples_region
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>);</pre>
<p>
When point sample rendering (also known as multisample rendering)
has been enabled via <code class="function">cogl_framebuffer_set_samples_per_pixel()</code>
then you can optionally call this function (or
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-resolve-samples" title="cogl_framebuffer_resolve_samples ()"><code class="function">cogl_framebuffer_resolve_samples()</code></a>) to explicitly resolve the point
samples into values for the final color buffer.
</p>
<p>
Some GPUs will implicitly resolve the point samples during
rendering and so this function is effectively a nop, but with other
architectures it is desirable to defer the resolve step until the
end of the frame.
</p>
<p>
Use of this API is recommended if incremental, small updates to
a framebuffer are being made because by default Cogl will
implicitly resolve all the point samples of the framebuffer which
can result in redundant work if only a small number of samples have
changed.
</p>
<p>
Because some GPUs implicitly resolve point samples this function
only guarantees that at-least the region specified will be resolved
and if you have rendered to a larger region then it's possible that
other samples may be implicitly resolved.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> framebuffer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>top-left x coordinate of region to resolve</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>top-left y coordinate of region to resolve</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>width of region to resolve</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>height of region to resolve</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-context"></a><h3>cogl_framebuffer_get_context ()</h3>
<pre class="programlisting"><span class="returnvalue">CoglContext</span> * cogl_framebuffer_get_context (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-clear"></a><h3>cogl_framebuffer_clear ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_clear (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">unsigned long </span> buffers</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *color</code></em>);</pre>
<p>
Clears all the auxiliary buffers identified in the <em class="parameter"><code>buffers</code></em> mask, and if
that includes the color buffer then the specified <em class="parameter"><code>color</code></em> is used.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffers</code></em> :</span></p></td>
<td>A mask of <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBufferBit" title="enum CoglBufferBit"><span class="type">CoglBufferBit</span></a>'s identifying which auxiliary
buffers to clear</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>color</code></em> :</span></p></td>
<td>The color to clear the color buffer too if specified in
<em class="parameter"><code>buffers</code></em>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-clear4f"></a><h3>cogl_framebuffer_clear4f ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_clear4f (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">unsigned long </span> buffers</code></em>,
<em class="parameter"><code><span class="type">float</span> red</code></em>,
<em class="parameter"><code><span class="type">float</span> green</code></em>,
<em class="parameter"><code><span class="type">float</span> blue</code></em>,
<em class="parameter"><code><span class="type">float</span> alpha</code></em>);</pre>
<p>
Clears all the auxiliary buffers identified in the <em class="parameter"><code>buffers</code></em> mask, and if
that includes the color buffer then the specified <em class="parameter"><code>color</code></em> is used.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffers</code></em> :</span></p></td>
<td>A mask of <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBufferBit" title="enum CoglBufferBit"><span class="type">CoglBufferBit</span></a>'s identifying which auxiliary
buffers to clear</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>red</code></em> :</span></p></td>
<td>The red component of color to clear the color buffer too if
specified in <em class="parameter"><code>buffers</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>green</code></em> :</span></p></td>
<td>The green component of color to clear the color buffer too if
specified in <em class="parameter"><code>buffers</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>blue</code></em> :</span></p></td>
<td>The blue component of color to clear the color buffer too if
specified in <em class="parameter"><code>buffers</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>alpha</code></em> :</span></p></td>
<td>The alpha component of color to clear the color buffer too if
specified in <em class="parameter"><code>buffers</code></em>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-read-pixels-into-bitmap"></a><h3>cogl_framebuffer_read_pixels_into_bitmap ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> cogl_framebuffer_read_pixels_into_bitmap
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglReadPixelsFlags" title="enum CoglReadPixelsFlags"><span class="type">CoglReadPixelsFlags</span></a> source</code></em>,
<em class="parameter"><code><span class="type">CoglBitmap</span> *bitmap</code></em>);</pre>
<p>
This reads a rectangle of pixels from the given framebuffer where
position (0, 0) is the top left. The pixel at (x, y) is the first
read, and a rectangle of pixels with the same size as the bitmap is
read right and downwards from that point.
</p>
<p>
Currently Cogl assumes that the framebuffer is in a premultiplied
format so if the format of <em class="parameter"><code>bitmap</code></em> is non-premultiplied it will
convert it. To read the pixel values without any conversion you
should either specify a format that doesn't use an alpha channel or
use one of the formats ending in PRE.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>The x position to read from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>The y position to read from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>source</code></em> :</span></p></td>
<td>Identifies which auxillary buffer you want to read
(only COGL_READ_PIXELS_COLOR_BUFFER supported currently)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bitmap</code></em> :</span></p></td>
<td>The bitmap to store the results in.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the read succeeded or <code class="literal">FALSE</code> otherwise. The
function is only likely to fail if the bitmap points to a pixel
buffer and it could not be mapped.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-read-pixels"></a><h3>cogl_framebuffer_read_pixels ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> cogl_framebuffer_read_pixels (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
<em class="parameter"><code><span class="type">guint8</span> *pixels</code></em>);</pre>
<p>
This is a convenience wrapper around
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-read-pixels-into-bitmap" title="cogl_framebuffer_read_pixels_into_bitmap ()"><code class="function">cogl_framebuffer_read_pixels_into_bitmap()</code></a> which allocates a
temporary <span class="type">CoglBitmap</span> to read pixel data directly into the given
buffer. The rowstride of the buffer is assumed to be the width of
the region times the bytes per pixel of the format. The source for
the data is always taken from the color buffer. If you want to use
any other rowstride or source, please use the
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-read-pixels-into-bitmap" title="cogl_framebuffer_read_pixels_into_bitmap ()"><code class="function">cogl_framebuffer_read_pixels_into_bitmap()</code></a> function directly.
</p>
<p>
The implementation of the function looks like this:
</p>
<p>
</p>
<div class="informalexample"><pre class="programlisting">
bitmap = cogl_bitmap_new_for_data (context,
width, height,
format,
/* rowstride */
bpp * width,
pixels);
cogl_framebuffer_read_pixels_into_bitmap (framebuffer,
x, y,
COGL_READ_PIXELS_COLOR_BUFFER,
bitmap);
cogl_object_unref (bitmap);
</pre></div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>The x position to read from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>The y position to read from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>The width of the region of rectangles to read</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>The height of the region of rectangles to read</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>The pixel format to store the data in</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pixels</code></em> :</span></p></td>
<td>The address of the buffer to store the data in</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the read succeeded or <code class="literal">FALSE</code> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-set-dither-enabled"></a><h3>cogl_framebuffer_set_dither_enabled ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_set_dither_enabled (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> dither_enabled</code></em>);</pre>
<p>
Enables or disabled dithering if supported by the hardware.
</p>
<p>
Dithering is a hardware dependent technique to increase the visible
color resolution beyond what the underlying hardware supports by playing
tricks with the colors placed into the framebuffer to give the illusion
of other colors. (For example this can be compared to half-toning used
by some news papers to show varying levels of grey even though their may
only be black and white are available).
</p>
<p>
If the current display pipeline for <em class="parameter"><code>framebuffer</code></em> does not support dithering
then this has no affect.
</p>
<p>
Dithering is enabled by default.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>dither_enabled</code></em> :</span></p></td>
<td>
<code class="literal">TRUE</code> to enable dithering or <code class="literal">FALSE</code> to disable</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-dither-enabled"></a><h3>cogl_framebuffer_get_dither_enabled ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> cogl_framebuffer_get_dither_enabled (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Returns whether dithering has been requested for the given <em class="parameter"><code>framebuffer</code></em>.
See <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-set-dither-enabled" title="cogl_framebuffer_set_dither_enabled ()"><code class="function">cogl_framebuffer_set_dither_enabled()</code></a> for more details about dithering.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>This may return <code class="literal">TRUE</code> even when the underlying <em class="parameter"><code>framebuffer</code></em>
display pipeline does not support dithering. This value only represents
the user's request for dithering.</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if dithering has been requested or <code class="literal">FALSE</code> if not.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-primitive"></a><h3>cogl_framebuffer_draw_primitive ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_primitive (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Primitives.html#CoglPrimitive" title="CoglPrimitive"><span class="type">CoglPrimitive</span></a> *primitive</code></em>);</pre>
<p>
Draws the given <em class="parameter"><code>primitive</code></em> geometry to the specified destination
<em class="parameter"><code>framebuffer</code></em> using the graphics processing state described by <em class="parameter"><code>pipeline</code></em>.
</p>
<p>
This drawing api doesn't support high-level meta texture types such
as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> so it is the user's responsibility to
ensure that only low-level textures that can be directly sampled by
a GPU such as <a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>, <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> or <a class="link" href="cogl-2.0-experimental-3D-textures.html#CoglTexture3D" title="CoglTexture3D"><span class="type">CoglTexture3D</span></a>
are associated with layers of the given <em class="parameter"><code>pipeline</code></em>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>This api doesn't support any of the legacy global state options such
as <code class="function">cogl_set_depth_test_enabled()</code>, <code class="function">cogl_set_backface_culling_enabled()</code> or
<code class="function">cogl_program_use()</code>
</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>primitive</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Primitives.html#CoglPrimitive" title="CoglPrimitive"><span class="type">CoglPrimitive</span></a> geometry object</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-attributes"></a><h3>cogl_framebuffer_draw_attributes ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_attributes (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code><span class="type">CoglAttribute</span> **attributes</code></em>,
<em class="parameter"><code><span class="type">int</span> n_attributes</code></em>);</pre>
<p>
First defines a geometry primitive by grouping a set of vertex <em class="parameter"><code>attributes</code></em>;
specifying a <em class="parameter"><code>first_vertex</code></em>; a number of vertices (<em class="parameter"><code>n_vertices</code></em>) and
specifying what kind of topology the vertices have via <em class="parameter"><code>mode</code></em>.
</p>
<p>
Then the function draws the given <em class="parameter"><code>primitive</code></em> geometry to the specified
destination <em class="parameter"><code>framebuffer</code></em> using the graphics processing pipeline described by
<em class="parameter"><code>pipeline</code></em>.
</p>
<p>
The list of <span class="type">CoglAttribute</span>s define the attributes of the vertices to
be drawn, such as positions, colors and normals and the number of attributes
is given as <em class="parameter"><code>n_attributes</code></em>.
</p>
<p>
This drawing api doesn't support high-level meta texture types such
as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> so it is the user's responsibility to
ensure that only low-level textures that can be directly sampled by
a GPU such as <a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>, <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> or <a class="link" href="cogl-2.0-experimental-3D-textures.html#CoglTexture3D" title="CoglTexture3D"><span class="type">CoglTexture3D</span></a>
are associated with layers of the given <em class="parameter"><code>pipeline</code></em>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>This api doesn't support any of the legacy global state options such
as <code class="function">cogl_set_depth_test_enabled()</code>, <code class="function">cogl_set_backface_culling_enabled()</code> or
<code class="function">cogl_program_use()</code>
</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>The <span class="type">CoglVerticesMode</span> defining the topology of vertices</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>first_vertex</code></em> :</span></p></td>
<td>The vertex offset within the given attributes to draw from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_vertices</code></em> :</span></p></td>
<td>The number of vertices to draw from the given attributes</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attributes</code></em> :</span></p></td>
<td>An array of pointers to <span class="type">CoglAttribute</span><-- -->s defining vertex
geometry</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_attributes</code></em> :</span></p></td>
<td>The number of attributes in the <em class="parameter"><code>attributes</code></em> array.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-vdraw-attributes"></a><h3>cogl_framebuffer_vdraw_attributes ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_vdraw_attributes (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>
First defines a geometry primitive by grouping a set of vertex attributes;
specifying a <em class="parameter"><code>first_vertex</code></em>; a number of vertices (<em class="parameter"><code>n_vertices</code></em>) and
specifying what kind of topology the vertices have via <em class="parameter"><code>mode</code></em>.
</p>
<p>
Then the function draws the given <em class="parameter"><code>primitive</code></em> geometry to the specified
destination <em class="parameter"><code>framebuffer</code></em> using the graphics processing pipeline described by
<em class="parameter"><code>pipeline</code></em>.
</p>
<p>
The list of <span class="type">CoglAttribute</span>s define the attributes of the vertices to
be drawn, such as positions, colors and normals and should be <code class="literal">NULL</code>
terminated.
</p>
<p>
This drawing api doesn't support high-level meta texture types such
as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> so it is the user's responsibility to
ensure that only low-level textures that can be directly sampled by
a GPU such as <a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>, <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> or <a class="link" href="cogl-2.0-experimental-3D-textures.html#CoglTexture3D" title="CoglTexture3D"><span class="type">CoglTexture3D</span></a>
are associated with layers of the given <em class="parameter"><code>pipeline</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>The <span class="type">CoglVerticesMode</span> defining the topology of vertices</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>first_vertex</code></em> :</span></p></td>
<td>The vertex offset within the given attributes to draw from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_vertices</code></em> :</span></p></td>
<td>The number of vertices to draw from the given attributes</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td>
<td>A set of vertex <span class="type">CoglAttribute</span>s defining vertex geometry</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-indexed-attributes"></a><h3>cogl_framebuffer_draw_indexed_attributes ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_indexed_attributes
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code><span class="type">CoglIndices</span> *indices</code></em>,
<em class="parameter"><code><span class="type">CoglAttribute</span> **attributes</code></em>,
<em class="parameter"><code><span class="type">int</span> n_attributes</code></em>);</pre>
<p>
Behaves the same as <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-attributes" title="cogl_framebuffer_draw_attributes ()"><code class="function">cogl_framebuffer_draw_attributes()</code></a> except that
instead of reading vertex data sequentially from the specified
<em class="parameter"><code>attributes</code></em> the <em class="parameter"><code>indices</code></em> provide an indirection for how the data
should be indexed allowing a random access order to be
specified.
</p>
<p>
For example an indices array of [0, 1, 2, 0, 2, 3] could be used
used to draw two triangles (<em class="parameter"><code>mode</code></em> = <code class="literal">COGL_VERTICES_MODE_TRIANGLES</code> +
<em class="parameter"><code>n_vertices</code></em> = 6) but only provide attribute data for the 4 corners
of a rectangle. When the GPU needs to read in each of the 6
vertices it will read the <em class="parameter"><code>indices</code></em> array for each vertex in
sequence and use the index to look up the vertex attribute data. So
here you can see that first and fourth vertex will point to the
same data and third and fifth vertex will also point to shared
data.
</p>
<p>
Drawing with indices can be a good way of minimizing the size of a
mesh by allowing you to avoid data for duplicate vertices because
multiple entries in the index array can refer back to a single
shared vertex.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The <em class="parameter"><code>indices</code></em> array must be at least as long as <em class="parameter"><code>first_vertex</code></em>
+ <em class="parameter"><code>n_vertices</code></em> otherwise the GPU will overrun the indices array when
looking up vertex data.</div>
<p>
</p>
<p>
Since it's very common to want to draw a run of rectangles using
indices to avoid duplicating vertex data you can use
<code class="function">cogl_get_rectangle_indices()</code> to get a set of indices that can be
shared.
</p>
<p>
This drawing api doesn't support high-level meta texture types such
as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> so it is the user's responsibility to
ensure that only low-level textures that can be directly sampled by
a GPU such as <a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>, <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> or
<a class="link" href="cogl-2.0-experimental-3D-textures.html#CoglTexture3D" title="CoglTexture3D"><span class="type">CoglTexture3D</span></a> are associated with layers of the given <em class="parameter"><code>pipeline</code></em>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>This api doesn't support any of the legacy global state
options such as <code class="function">cogl_set_depth_test_enabled()</code>,
<code class="function">cogl_set_backface_culling_enabled()</code> or <code class="function">cogl_program_use()</code>
</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>The <span class="type">CoglVerticesMode</span> defining the topology of vertices</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>first_vertex</code></em> :</span></p></td>
<td>The vertex offset within the given attributes to draw from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_vertices</code></em> :</span></p></td>
<td>The number of vertices to draw from the given attributes</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>indices</code></em> :</span></p></td>
<td>The array of indices used by the GPU to lookup attribute
data for each vertex.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attributes</code></em> :</span></p></td>
<td>An array of pointers to <span class="type">CoglAttribute</span><-- -->s defining vertex
geometry</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_attributes</code></em> :</span></p></td>
<td>The number of attributes in the <em class="parameter"><code>attributes</code></em> array.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-vdraw-indexed-attributes"></a><h3>cogl_framebuffer_vdraw_indexed_attributes ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_vdraw_indexed_attributes
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">CoglVerticesMode</span> mode</code></em>,
<em class="parameter"><code><span class="type">int</span> first_vertex</code></em>,
<em class="parameter"><code><span class="type">int</span> n_vertices</code></em>,
<em class="parameter"><code><span class="type">CoglIndices</span> *indices</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>
Behaves the same as <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-vdraw-attributes" title="cogl_framebuffer_vdraw_attributes ()"><code class="function">cogl_framebuffer_vdraw_attributes()</code></a> except that
instead of reading vertex data sequentially from the specified
attributes the <em class="parameter"><code>indices</code></em> provide an indirection for how the data
should be indexed allowing a random access order to be
specified.
</p>
<p>
For example an indices array of [0, 1, 2, 0, 2, 3] could be used
used to draw two triangles (<em class="parameter"><code>mode</code></em> = <code class="literal">COGL_VERTICES_MODE_TRIANGLES</code> +
<em class="parameter"><code>n_vertices</code></em> = 6) but only provide attribute data for the 4 corners
of a rectangle. When the GPU needs to read in each of the 6
vertices it will read the <em class="parameter"><code>indices</code></em> array for each vertex in
sequence and use the index to look up the vertex attribute data. So
here you can see that first and fourth vertex will point to the
same data and third and fifth vertex will also point to shared
data.
</p>
<p>
Drawing with indices can be a good way of minimizing the size of a
mesh by allowing you to avoid data for duplicate vertices because
multiple entries in the index array can refer back to a single
shared vertex.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The <em class="parameter"><code>indices</code></em> array must be at least as long as <em class="parameter"><code>first_vertex</code></em>
+ <em class="parameter"><code>n_vertices</code></em> otherwise the GPU will overrun the indices array when
looking up vertex data.</div>
<p>
</p>
<p>
Since it's very common to want to draw a run of rectangles using
indices to avoid duplicating vertex data you can use
<code class="function">cogl_get_rectangle_indices()</code> to get a set of indices that can be
shared.
</p>
<p>
This drawing api doesn't support high-level meta texture types such
as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> so it is the user's responsibility to
ensure that only low-level textures that can be directly sampled by
a GPU such as <a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>, <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> or
<a class="link" href="cogl-2.0-experimental-3D-textures.html#CoglTexture3D" title="CoglTexture3D"><span class="type">CoglTexture3D</span></a> are associated with layers of the given <em class="parameter"><code>pipeline</code></em>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>This api doesn't support any of the legacy global state
options such as <code class="function">cogl_set_depth_test_enabled()</code>,
<code class="function">cogl_set_backface_culling_enabled()</code> or <code class="function">cogl_program_use()</code>
</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>The <span class="type">CoglVerticesMode</span> defining the topology of vertices</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>first_vertex</code></em> :</span></p></td>
<td>The vertex offset within the given attributes to draw from</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_vertices</code></em> :</span></p></td>
<td>The number of vertices to draw from the given attributes</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>indices</code></em> :</span></p></td>
<td>The array of indices used by the GPU to lookup attribute
data for each vertex.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td>
<td>A set of vertex <span class="type">CoglAttribute</span>s defining vertex geometry</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-rectangle"></a><h3>cogl_framebuffer_draw_rectangle ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_rectangle (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>);</pre>
<p>
Draws a rectangle to <em class="parameter"><code>framebuffer</code></em> with the given <em class="parameter"><code>pipeline</code></em> state
and with the top left corner positioned at (<em class="parameter"><code>x_1</code></em>, <em class="parameter"><code>y_1</code></em>) and the
bottom right corner positioned at (<em class="parameter"><code>x_2</code></em>, <em class="parameter"><code>y_2</code></em>).
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The position is the position before the rectangle has been
transformed by the model-view matrix and the projection
matrix.</div>
<p>
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>If you want to describe a rectangle with a texture mapped on
it then you can use
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-textured-rectangle" title="cogl_framebuffer_draw_textured_rectangle ()"><code class="function">cogl_framebuffer_draw_textured_rectangle()</code></a>.</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_1</code></em> :</span></p></td>
<td>X coordinate of the top-left corner</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_1</code></em> :</span></p></td>
<td>Y coordinate of the top-left corner</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_2</code></em> :</span></p></td>
<td>X coordinate of the bottom-right corner</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_2</code></em> :</span></p></td>
<td>Y coordinate of the bottom-right corner</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-textured-rectangle"></a><h3>cogl_framebuffer_draw_textured_rectangle ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_textured_rectangle
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>,
<em class="parameter"><code><span class="type">float</span> s_1</code></em>,
<em class="parameter"><code><span class="type">float</span> t_1</code></em>,
<em class="parameter"><code><span class="type">float</span> s_2</code></em>,
<em class="parameter"><code><span class="type">float</span> t_2</code></em>);</pre>
<p>
Draws a textured rectangle to <em class="parameter"><code>framebuffer</code></em> using the given
<em class="parameter"><code>pipeline</code></em> state with the top left corner positioned at (<em class="parameter"><code>x_1</code></em>, <em class="parameter"><code>y_1</code></em>)
and the bottom right corner positioned at (<em class="parameter"><code>x_2</code></em>, <em class="parameter"><code>y_2</code></em>). The top
left corner will have texture coordinates of (<em class="parameter"><code>s_1</code></em>, <em class="parameter"><code>t_1</code></em>) and the
bottom right corner will have texture coordinates of (<em class="parameter"><code>s_2</code></em>, <em class="parameter"><code>t_2</code></em>).
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The position is the position before the rectangle has been
transformed by the model-view matrix and the projection
matrix.</div>
<p>
</p>
<p>
This is a high level drawing api that can handle any kind of
<a class="link" href="cogl-2.0-experimental-High-Level-Meta-Textures.html#CoglMetaTexture" title="CoglMetaTexture"><span class="type">CoglMetaTexture</span></a> texture such as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> textures
which may internally be comprised of multiple low-level textures.
This is unlike low-level drawing apis such as
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-primitive" title="cogl_framebuffer_draw_primitive ()"><code class="function">cogl_framebuffer_draw_primitive()</code></a> or
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-attributes" title="cogl_framebuffer_draw_attributes ()"><code class="function">cogl_framebuffer_draw_attributes()</code></a> which only support low level
texture types that are directly supported by GPUs such as
<a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The given texture coordinates will only be used for the first
texture layer of the pipeline and if your pipeline has more than
one layer then all other layers will have default texture
coordinates of <em class="parameter"><code>s_1</code></em>=0.0 <em class="parameter"><code>t_1</code></em>=0.0 <em class="parameter"><code>s_2</code></em>=1.0 <em class="parameter"><code>t_2</code></em>=1.0 </div>
<p>
</p>
<p>
The given texture coordinates should always be normalized such that
(0, 0) corresponds to the top left and (1, 1) corresponds to the
bottom right. To map an entire texture across the rectangle pass
in <em class="parameter"><code>s_1</code></em>=<code class="literal">0</code>, <em class="parameter"><code>t_1</code></em>=<code class="literal">0</code>, <em class="parameter"><code>s_2</code></em>=<code class="literal">1</code>, <em class="parameter"><code>t_2</code></em>=<code class="literal">1</code>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>Even if you have associated a <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> texture
with one of your <em class="parameter"><code>pipeline</code></em> layers which normally implies working
with non-normalized texture coordinates this api should still be
passed normalized texture coordinates.</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_1</code></em> :</span></p></td>
<td>x coordinate upper left on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_1</code></em> :</span></p></td>
<td>y coordinate upper left on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_2</code></em> :</span></p></td>
<td>x coordinate lower right on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_2</code></em> :</span></p></td>
<td>y coordinate lower right on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>s_1</code></em> :</span></p></td>
<td>S texture coordinate of the top-left coorner</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>t_1</code></em> :</span></p></td>
<td>T texture coordinate of the top-left coorner</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>s_2</code></em> :</span></p></td>
<td>S texture coordinate of the bottom-right coorner</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>t_2</code></em> :</span></p></td>
<td>T texture coordinate of the bottom-right coorner</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-multitextured-rectangle"></a><h3>cogl_framebuffer_draw_multitextured_rectangle ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_multitextured_rectangle
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *tex_coords</code></em>,
<em class="parameter"><code><span class="type">int</span> tex_coords_len</code></em>);</pre>
<p>
Draws a textured rectangle to <em class="parameter"><code>framebuffer</code></em> with the given <em class="parameter"><code>pipeline</code></em>
state with the top left corner positioned at (<em class="parameter"><code>x_1</code></em>, <em class="parameter"><code>y_1</code></em>) and the
bottom right corner positioned at (<em class="parameter"><code>x_2</code></em>, <em class="parameter"><code>y_2</code></em>). As a pipeline may
contain multiple texture layers this interface lets you supply
texture coordinates for each layer of the pipeline.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The position is the position before the rectangle has been
transformed by the model-view matrix and the projection
matrix.</div>
<p>
</p>
<p>
This is a high level drawing api that can handle any kind of
<a class="link" href="cogl-2.0-experimental-High-Level-Meta-Textures.html#CoglMetaTexture" title="CoglMetaTexture"><span class="type">CoglMetaTexture</span></a> texture for the first layer such as
<a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> textures which may internally be comprised of
multiple low-level textures. This is unlike low-level drawing apis
such as <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-primitive" title="cogl_framebuffer_draw_primitive ()"><code class="function">cogl_framebuffer_draw_primitive()</code></a> or
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-attributes" title="cogl_framebuffer_draw_attributes ()"><code class="function">cogl_framebuffer_draw_attributes()</code></a> which only support low level
texture types that are directly supported by GPUs such as
<a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>This api can not currently handle multiple high-level meta
texture layers. The first layer may be a high level meta texture
such as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> but all other layers much be low
level textures such as <a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a> and additionally they
should be textures that can be sampled using normalized coordinates
(so not <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> textures).</div>
<p>
</p>
<p>
The top left texture coordinate for layer 0 of any pipeline will be
(tex_coords[0], tex_coords[1]) and the bottom right coordinate will
be (tex_coords[2], tex_coords[3]). The coordinates for layer 1
would be (tex_coords[4], tex_coords[5]) (tex_coords[6],
tex_coords[7]) and so on...
</p>
<p>
The given texture coordinates should always be normalized such that
(0, 0) corresponds to the top left and (1, 1) corresponds to the
bottom right. To map an entire texture across the rectangle pass
in tex_coords[0]=<code class="literal">0</code>, tex_coords[1]=<code class="literal">0</code>, tex_coords[2]=<code class="literal">1</code>,
tex_coords[3]=<code class="literal">1</code>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>Even if you have associated a <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> texture
which normally implies working with non-normalized texture
coordinates this api should still be passed normalized texture
coordinates.</div>
<p>
</p>
<p>
The first pair of coordinates are for the first layer (with the
smallest layer index) and if you supply less texture coordinates
than there are layers in the current source material then default
texture coordinates (0.0, 0.0, 1.0, 1.0) are generated.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_1</code></em> :</span></p></td>
<td>x coordinate upper left on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_1</code></em> :</span></p></td>
<td>y coordinate upper left on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_2</code></em> :</span></p></td>
<td>x coordinate lower right on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_2</code></em> :</span></p></td>
<td>y coordinate lower right on screen.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>tex_coords</code></em> :</span></p></td>
<td>An array containing groups of
4 float values: [s_1, t_1, s_2, t_2] that are interpreted as two texture
coordinates; one for the top left texel, and one for the bottom right
texel. Each value should be between 0.0 and 1.0, where the coordinate
(0.0, 0.0) represents the top left of the texture, and (1.0, 1.0) the
bottom right. <span class="annotation">[<acronym title="Parameter for input. Default is transfer none."><span class="acronym">in</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym>][<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>tex_coords_len</code></em> :</span></p></td>
<td>The length of the <em class="parameter"><code>tex_coords</code></em> array. (For one layer
and one group of texture coordinates, this would be 4)</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-rectangles"></a><h3>cogl_framebuffer_draw_rectangles ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_rectangles (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *verts</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> n_rects</code></em>);</pre>
<p>
Draws a series of rectangles to <em class="parameter"><code>framebuffer</code></em> with the given
<em class="parameter"><code>pipeline</code></em> state in the same way that
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-rectangle" title="cogl_framebuffer_draw_rectangle ()"><code class="function">cogl_framebuffer_draw_rectangle()</code></a> does.
</p>
<p>
The top left corner of the first rectangle is positioned at
(coordinates[0], coordinates[1]) and the bottom right corner is
positioned at (coordinates[2], coordinates[3]). The positions for
the second rectangle are (coordinates[4], coordinates[5]) and
(coordinates[6], coordinates[7]) and so on...
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The position is the position before the rectangle has been
transformed by the model-view matrix and the projection
matrix.</div>
<p>
</p>
<p>
As a general rule for better performance its recommended to use
this this API instead of calling
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-textured-rectangle" title="cogl_framebuffer_draw_textured_rectangle ()"><code class="function">cogl_framebuffer_draw_textured_rectangle()</code></a> separately for multiple
rectangles if all of the rectangles will be drawn together with the
same <em class="parameter"><code>pipeline</code></em> state.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>coordinates</code></em> :</span></p></td>
<td>an array of coordinates
containing groups of 4 float values: [x_1, y_1, x_2, y_2] that are
interpreted as two position coordinates; one for the top left of
the rectangle (x1, y1), and one for the bottom right of the
rectangle (x2, y2). <span class="annotation">[<acronym title="Parameter for input. Default is transfer none."><span class="acronym">in</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym>][<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_rectangles</code></em> :</span></p></td>
<td>number of rectangles defined in <em class="parameter"><code>coordinates</code></em>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-draw-textured-rectangles"></a><h3>cogl_framebuffer_draw_textured_rectangles ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_draw_textured_rectangles
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">CoglPipeline</span> *pipeline</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *coordinates</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> n_rectangles</code></em>);</pre>
<p>
Draws a series of rectangles to <em class="parameter"><code>framebuffer</code></em> with the given
<em class="parameter"><code>pipeline</code></em> state in the same way that
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-textured-rectangle" title="cogl_framebuffer_draw_textured_rectangle ()"><code class="function">cogl_framebuffer_draw_textured_rectangle()</code></a> does.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>The position is the position before the rectangle has been
transformed by the model-view matrix and the projection
matrix.</div>
<p>
</p>
<p>
This is a high level drawing api that can handle any kind of
<a class="link" href="cogl-2.0-experimental-High-Level-Meta-Textures.html#CoglMetaTexture" title="CoglMetaTexture"><span class="type">CoglMetaTexture</span></a> texture such as <a class="link" href="cogl-2.0-experimental-Sliced-Textures.html#CoglTexture2DSliced" title="CoglTexture2DSliced"><span class="type">CoglTexture2DSliced</span></a> textures
which may internally be comprised of multiple low-level textures.
This is unlike low-level drawing apis such as
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-primitive" title="cogl_framebuffer_draw_primitive ()"><code class="function">cogl_framebuffer_draw_primitive()</code></a> or
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-attributes" title="cogl_framebuffer_draw_attributes ()"><code class="function">cogl_framebuffer_draw_attributes()</code></a> which only support low level
texture types that are directly supported by GPUs such as
<a class="link" href="cogl-2.0-experimental-2D-textures.html#CoglTexture2D" title="CoglTexture2D"><span class="type">CoglTexture2D</span></a>.
</p>
<p>
The top left corner of the first rectangle is positioned at
(coordinates[0], coordinates[1]) and the bottom right corner is
positioned at (coordinates[2], coordinates[3]). The top left
texture coordinate is (coordinates[4], coordinates[5]) and the
bottom right texture coordinate is (coordinates[6],
coordinates[7]). The coordinates for subsequent rectangles
are defined similarly by the subsequent coordinates.
</p>
<p>
As a general rule for better performance its recommended to use
this this API instead of calling
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-textured-rectangle" title="cogl_framebuffer_draw_textured_rectangle ()"><code class="function">cogl_framebuffer_draw_textured_rectangle()</code></a> separately for multiple
rectangles if all of the rectangles will be drawn together with the
same <em class="parameter"><code>pipeline</code></em> state.
</p>
<p>
The given texture coordinates should always be normalized such that
(0, 0) corresponds to the top left and (1, 1) corresponds to the
bottom right. To map an entire texture across the rectangle pass
in tex_coords[0]=<code class="literal">0</code>, tex_coords[1]=<code class="literal">0</code>, tex_coords[2]=<code class="literal">1</code>,
tex_coords[3]=<code class="literal">1</code>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>Even if you have associated a <a class="link" href="cogl-2.0-experimental-Rectangle-textures-(non-normalized-coordinates).html#CoglTextureRectangle" title="CoglTextureRectangle"><span class="type">CoglTextureRectangle</span></a> texture
which normally implies working with non-normalized texture
coordinates this api should still be passed normalized texture
coordinates.</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A destination <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pipeline</code></em> :</span></p></td>
<td>A <span class="type">CoglPipeline</span> state object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>coordinates</code></em> :</span></p></td>
<td>an array containing
groups of 8 float values: [x_1, y_1, x_2, y_2, s_1, t_1, s_2, t_2]
that have the same meaning as the arguments for
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-draw-textured-rectangle" title="cogl_framebuffer_draw_textured_rectangle ()"><code class="function">cogl_framebuffer_draw_textured_rectangle()</code></a>. <span class="annotation">[<acronym title="Parameter for input. Default is transfer none."><span class="acronym">in</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym>][<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_rectangles</code></em> :</span></p></td>
<td>number of rectangles to <em class="parameter"><code>coordinates</code></em> to draw</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-finish"></a><h3>cogl_framebuffer_finish ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_finish (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
This blocks the CPU until all pending rendering associated with the
specified framebuffer has completed. It's very rare that developers should
ever need this level of synchronization with the GPU and should never be
used unless you clearly understand why you need to explicitly force
synchronization.
</p>
<p>
One example might be for benchmarking purposes to be sure timing
measurements reflect the time that the GPU is busy for not just the time it
takes to queue rendering commands.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-push-matrix"></a><h3>cogl_framebuffer_push_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_push_matrix (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Copies the current model-view matrix onto the matrix stack. The matrix
can later be restored with <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-pop-matrix" title="cogl_framebuffer_pop_matrix ()"><code class="function">cogl_framebuffer_pop_matrix()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.10</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-pop-matrix"></a><h3>cogl_framebuffer_pop_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_pop_matrix (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Restores the model-view matrix on the top of the matrix stack.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.10</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-identity-matrix"></a><h3>cogl_framebuffer_identity_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_identity_matrix (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Resets the current model-view matrix to the identity matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-scale"></a><h3>cogl_framebuffer_scale ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_scale (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> z</code></em>);</pre>
<p>
Multiplies the current model-view matrix by one that scales the x,
y and z axes by the given values.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>Amount to scale along the x-axis</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>Amount to scale along the y-axis</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>z</code></em> :</span></p></td>
<td>Amount to scale along the z-axis</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-translate"></a><h3>cogl_framebuffer_translate ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_translate (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> z</code></em>);</pre>
<p>
Multiplies the current model-view matrix by one that translates the
model along all three axes according to the given values.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>Distance to translate along the x-axis</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>Distance to translate along the y-axis</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>z</code></em> :</span></p></td>
<td>Distance to translate along the z-axis</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-rotate"></a><h3>cogl_framebuffer_rotate ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_rotate (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> angle</code></em>,
<em class="parameter"><code><span class="type">float</span> x</code></em>,
<em class="parameter"><code><span class="type">float</span> y</code></em>,
<em class="parameter"><code><span class="type">float</span> z</code></em>);</pre>
<p>
Multiplies the current model-view matrix by one that rotates the
model around the vertex specified by <em class="parameter"><code>x</code></em>, <em class="parameter"><code>y</code></em> and <em class="parameter"><code>z</code></em>. The rotation
follows the right-hand thumb rule so for example rotating by 10
degrees about the vertex (0, 0, 1) causes a small counter-clockwise
rotation.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>angle</code></em> :</span></p></td>
<td>Angle in degrees to rotate.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>X-component of vertex to rotate around.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>Y-component of vertex to rotate around.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>z</code></em> :</span></p></td>
<td>Z-component of vertex to rotate around.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-transform"></a><h3>cogl_framebuffer_transform ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_transform (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);</pre>
<p>
Multiplies the current model-view matrix by the given matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>the matrix to multiply with the current model-view</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-modelview-matrix"></a><h3>cogl_framebuffer_get_modelview_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_get_modelview_matrix
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);</pre>
<p>
Stores the current model-view matrix in <em class="parameter"><code>matrix</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>return location for the model-view matrix. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-set-modelview-matrix"></a><h3>cogl_framebuffer_set_modelview_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_set_modelview_matrix
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);</pre>
<p>
Sets <em class="parameter"><code>matrix</code></em> as the new model-view matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>the new model-view matrix</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-perspective"></a><h3>cogl_framebuffer_perspective ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_perspective (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> fov_y</code></em>,
<em class="parameter"><code><span class="type">float</span> aspect</code></em>,
<em class="parameter"><code><span class="type">float</span> z_near</code></em>,
<em class="parameter"><code><span class="type">float</span> z_far</code></em>);</pre>
<p>
Replaces the current projection matrix with a perspective matrix
based on the provided values.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>You should be careful not to have to great a <em class="parameter"><code>z_far</code></em> / <em class="parameter"><code>z_near</code></em>
ratio since that will reduce the effectiveness of depth testing
since there wont be enough precision to identify the depth of
objects near to each other.</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>fov_y</code></em> :</span></p></td>
<td>Vertical field of view angle in degrees.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>aspect</code></em> :</span></p></td>
<td>The (width over height) aspect ratio for display</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>z_near</code></em> :</span></p></td>
<td>The distance to the near clipping plane (Must be positive,
and must not be 0)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>z_far</code></em> :</span></p></td>
<td>The distance to the far clipping plane (Must be positive)</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-frustum"></a><h3>cogl_framebuffer_frustum ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_frustum (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> left</code></em>,
<em class="parameter"><code><span class="type">float</span> right</code></em>,
<em class="parameter"><code><span class="type">float</span> bottom</code></em>,
<em class="parameter"><code><span class="type">float</span> top</code></em>,
<em class="parameter"><code><span class="type">float</span> z_near</code></em>,
<em class="parameter"><code><span class="type">float</span> z_far</code></em>);</pre>
<p>
Replaces the current projection matrix with a perspective matrix
for a given viewing frustum defined by 4 side clip planes that
all cross through the origin and 2 near and far clip planes.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>left</code></em> :</span></p></td>
<td>X position of the left clipping plane where it
intersects the near clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>right</code></em> :</span></p></td>
<td>X position of the right clipping plane where it
intersects the near clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bottom</code></em> :</span></p></td>
<td>Y position of the bottom clipping plane where it
intersects the near clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>top</code></em> :</span></p></td>
<td>Y position of the top clipping plane where it intersects
the near clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>z_near</code></em> :</span></p></td>
<td>The distance to the near clipping plane (Must be positive)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>z_far</code></em> :</span></p></td>
<td>The distance to the far clipping plane (Must be positive)</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-orthographic"></a><h3>cogl_framebuffer_orthographic ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_orthographic (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>,
<em class="parameter"><code><span class="type">float</span> near</code></em>,
<em class="parameter"><code><span class="type">float</span> far</code></em>);</pre>
<p>
Replaces the current projection matrix with an orthographic projection
matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_1</code></em> :</span></p></td>
<td>The x coordinate for the first vertical clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_1</code></em> :</span></p></td>
<td>The y coordinate for the first horizontal clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_2</code></em> :</span></p></td>
<td>The x coordinate for the second vertical clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_2</code></em> :</span></p></td>
<td>The y coordinate for the second horizontal clipping plane</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>near</code></em> :</span></p></td>
<td>The <span class="emphasis"><em>distance</em></span> to the near clipping
plane (will be <span class="emphasis"><em>negative</em></span> if the plane is
behind the viewer)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>far</code></em> :</span></p></td>
<td>The <span class="emphasis"><em>distance</em></span> to the far clipping
plane (will be <span class="emphasis"><em>negative</em></span> if the plane is
behind the viewer)</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-get-projection-matrix"></a><h3>cogl_framebuffer_get_projection_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_get_projection_matrix
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);</pre>
<p>
Stores the current projection matrix in <em class="parameter"><code>matrix</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>return location for the projection matrix. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-set-projection-matrix"></a><h3>cogl_framebuffer_set_projection_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_set_projection_matrix
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);</pre>
<p>
Sets <em class="parameter"><code>matrix</code></em> as the new projection matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>the new projection matrix</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-push-scissor-clip"></a><h3>cogl_framebuffer_push_scissor_clip ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_push_scissor_clip (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">int</span> x</code></em>,
<em class="parameter"><code><span class="type">int</span> y</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>);</pre>
<p>
Specifies a rectangular clipping area for all subsequent drawing
operations. Any drawing commands that extend outside the rectangle
will be clipped so that only the portion inside the rectangle will
be displayed. The rectangle dimensions are not transformed by the
current model-view matrix.
</p>
<p>
The rectangle is intersected with the current clip region. To undo
the effect of this function, call <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-pop-clip" title="cogl_framebuffer_pop_clip ()"><code class="function">cogl_framebuffer_pop_clip()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td>
<td>left edge of the clip rectangle in window coordinates</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td>
<td>top edge of the clip rectangle in window coordinates</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>width of the clip rectangle</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>height of the clip rectangle</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-push-rectangle-clip"></a><h3>cogl_framebuffer_push_rectangle_clip ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_push_rectangle_clip
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><span class="type">float</span> x_1</code></em>,
<em class="parameter"><code><span class="type">float</span> y_1</code></em>,
<em class="parameter"><code><span class="type">float</span> x_2</code></em>,
<em class="parameter"><code><span class="type">float</span> y_2</code></em>);</pre>
<p>
Specifies a modelview transformed rectangular clipping area for all
subsequent drawing operations. Any drawing commands that extend
outside the rectangle will be clipped so that only the portion
inside the rectangle will be displayed. The rectangle dimensions
are transformed by the current model-view matrix.
</p>
<p>
The rectangle is intersected with the current clip region. To undo
the effect of this function, call <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-pop-clip" title="cogl_framebuffer_pop_clip ()"><code class="function">cogl_framebuffer_pop_clip()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_1</code></em> :</span></p></td>
<td>x coordinate for top left corner of the clip rectangle</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_1</code></em> :</span></p></td>
<td>y coordinate for top left corner of the clip rectangle</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x_2</code></em> :</span></p></td>
<td>x coordinate for bottom right corner of the clip rectangle</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y_2</code></em> :</span></p></td>
<td>y coordinate for bottom right corner of the clip rectangle</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-push-primitive-clip"></a><h3>cogl_framebuffer_push_primitive_clip ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_push_primitive_clip
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Primitives.html#CoglPrimitive" title="CoglPrimitive"><span class="type">CoglPrimitive</span></a> *primitive</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_x1</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_y1</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_x2</code></em>,
<em class="parameter"><code><span class="type">float</span> bounds_y2</code></em>);</pre>
<p>
Sets a new clipping area using a 2D shaped described with a
<a class="link" href="cogl-2.0-experimental-Primitives.html#CoglPrimitive" title="CoglPrimitive"><span class="type">CoglPrimitive</span></a>. The shape must not contain self overlapping
geometry and must lie on a single 2D plane. A bounding box of the
2D shape in local coordinates (the same coordinates used to
describe the shape) must be given. It is acceptable for the bounds
to be larger than the true bounds but behaviour is undefined if the
bounds are smaller than the true bounds.
</p>
<p>
The primitive is transformed by the current model-view matrix and
the silhouette is intersected with the previous clipping area. To
restore the previous clipping area, call
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-pop-clip" title="cogl_framebuffer_pop_clip ()"><code class="function">cogl_framebuffer_pop_clip()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>primitive</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Primitives.html#CoglPrimitive" title="CoglPrimitive"><span class="type">CoglPrimitive</span></a> describing a flat 2D shape</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bounds_x1</code></em> :</span></p></td>
<td>x coordinate for the top-left corner of the primitives
bounds</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bounds_y1</code></em> :</span></p></td>
<td>y coordinate for the top-left corner of the primitives
bounds</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bounds_x2</code></em> :</span></p></td>
<td>x coordinate for the top-left corner of the primitives
bounds</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bounds_y2</code></em> :</span></p></td>
<td>x coordinate for the bottom-right corner of the
primitives bounds.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>bounds_x1</code></em> :</span></p></td>
<td>y coordinate for the bottom-right corner of the
primitives bounds.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-framebuffer-pop-clip"></a><h3>cogl_framebuffer_pop_clip ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_framebuffer_pop_clip (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *framebuffer</code></em>);</pre>
<p>
Reverts the clipping region to the state before the last call to
<code class="function">cogl_framebuffer_push_clip()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>framebuffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> pointer</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-get-draw-framebuffer"></a><h3>cogl_get_draw_framebuffer ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="returnvalue">CoglFramebuffer</span></a> * cogl_get_draw_framebuffer (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Gets the current <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> as set using
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-push-framebuffer" title="cogl_push_framebuffer ()"><code class="function">cogl_push_framebuffer()</code></a>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The current <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a>
</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-set-framebuffer"></a><h3>cogl_set_framebuffer ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_set_framebuffer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *buffer</code></em>);</pre>
<p>
This redirects all subsequent drawing to the specified framebuffer. This can
either be an offscreen buffer created with <a class="link" href="cogl-2.0-experimental-Offscreen-Framebuffers.html#cogl-offscreen-new-to-texture" title="cogl_offscreen_new_to_texture ()"><code class="function">cogl_offscreen_new_to_texture()</code></a>
or in the future it may be an onscreen framebuffers too.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> object, either onscreen or offscreen.</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.2</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-push-framebuffer"></a><h3>cogl_push_framebuffer ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_push_framebuffer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> *buffer</code></em>);</pre>
<p>
Redirects all subsequent drawing to the specified framebuffer. This can
either be an offscreen buffer created with <a class="link" href="cogl-2.0-experimental-Offscreen-Framebuffers.html#cogl-offscreen-new-to-texture" title="cogl_offscreen_new_to_texture ()"><code class="function">cogl_offscreen_new_to_texture()</code></a>
or in the future it may be an onscreen framebuffer too.
</p>
<p>
You should understand that a framebuffer owns the following state:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">The projection matrix</li>
<li class="listitem">The modelview matrix stack</li>
<li class="listitem">The viewport</li>
<li class="listitem">The clip stack</li>
</ul></div>
<p>
So these items will automatically be saved and restored when you
push and pop between different framebuffers.
</p>
<p>
Also remember a newly allocated framebuffer will have an identity matrix for
the projection and modelview matrices which gives you a coordinate space
like OpenGL with (-1, -1) corresponding to the top left of the viewport,
(1, 1) corresponding to the bottom right and +z coming out towards the
viewer.
</p>
<p>
If you want to set up a coordinate space like Clutter does with (0, 0)
corresponding to the top left and (framebuffer_width, framebuffer_height)
corresponding to the bottom right you can do so like this:
</p>
<p>
</p>
<div class="informalexample"><pre class="programlisting">
static void
setup_viewport (unsigned int width,
unsigned int height,
float fovy,
float aspect,
float z_near,
float z_far)
{
float z_camera;
CoglMatrix projection_matrix;
CoglMatrix mv_matrix;
cogl_set_viewport (0, 0, width, height);
cogl_perspective (fovy, aspect, z_near, z_far);
cogl_get_projection_matrix (&projection_matrix);
z_camera = 0.5 * projection_matrix.xx;
cogl_matrix_init_identity (&mv_matrix);
cogl_matrix_translate (&mv_matrix, -0.5f, -0.5f, -z_camera);
cogl_matrix_scale (&mv_matrix, 1.0f / width, -1.0f / height, 1.0f / width);
cogl_matrix_translate (&mv_matrix, 0.0f, -1.0 * height, 0.0f);
cogl_set_modelview_matrix (&mv_matrix);
}
static void
my_init_framebuffer (ClutterStage *stage,
CoglFramebuffer *framebuffer,
unsigned int framebuffer_width,
unsigned int framebuffer_height)
{
ClutterPerspective perspective;
clutter_stage_get_perspective (stage, &perspective);
cogl_push_framebuffer (framebuffer);
setup_viewport (framebuffer_width,
framebuffer_height,
perspective.fovy,
perspective.aspect,
perspective.z_near,
perspective.z_far);
}
</pre></div>
<p>
</p>
<p>
The previous framebuffer can be restored by calling <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-pop-framebuffer" title="cogl_pop_framebuffer ()"><code class="function">cogl_pop_framebuffer()</code></a>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#CoglFramebuffer" title="CoglFramebuffer"><span class="type">CoglFramebuffer</span></a> object, either onscreen or offscreen.</td>
</tr></tbody>
</table></div>
<p class="since">Since 1.2</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pop-framebuffer"></a><h3>cogl_pop_framebuffer ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> cogl_pop_framebuffer (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Restores the framebuffer that was previously at the top of the stack.
All subsequent drawing will be redirected to this framebuffer.
</p>
<p class="since">Since 1.2</p>
</div>
</div>
</div>
<div class="footer">
<hr>
Generated by GTK-Doc V1.18</div>
</body>
</html>
|