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;;; ---------------------------------------------------------------------------
;;; Title: The X Render Extension
;;; Created: 2002-08-03
;;; Author: Gilbert Baumann <unk6@rz.uni-karlsruhe.de>
;;; $Id: xrender.lisp,v 1.5 2004/12/06 11:48:57 csr21 Exp $
;;; ---------------------------------------------------------------------------
;;;
;;; (c) copyright 2002, 2003 by Gilbert Baumann
;;; (c) copyright 2002 by Christian Sunesson
;;;
;;; Permission is granted to any individual or institution to use,
;;; copy, modify, and distribute this software, provided that this
;;; complete copyright and permission notice is maintained, intact, in
;;; all copies and supporting documentation.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
;;;
;;; NOTE: we need to watch maximum request sizes and somehow work
;;; around them. Sometimes e.g. in AddGlyphs this is not possible,
;;; which is a design failure.
;;; TODO
;; - some request are still to be implemented at all.
;; + Can they not wait? Xrender seems to be in flux as the specification
;; isn't even conforming to the acctual protocol. However backwards
;; wierd that sound. --noss
;; - we need to invent something for the color values of e.g.
;; fill-rectangles; I would prefer some generic functions, so that
;; we later can map CLIM design directly to colors.
;; - we want some conviencene function to turn graphics contexts into
;; render pictures. --GB 2002-08-21
;; - also: uniform-alpha-picture display alpha-value
;; uniform-color-picture display red green blue
;; --GB 2002-08-21
;; - maybe we should aim for a higher level interface to
;; color-trapzoids and color-triangles and offer a low level [raw]
;; interface also for high performance apps?
;; - Write tests.
;;;; API issues
;; - On one hand we want convenience functions like RENDER-TRIANGLE or
;; WITH-UNIFORM-COLOR-PICTURE. On the other hand if you are up to
;; write a full rasterization library you obviously want high
;; performance entry points as RENDER-TRIANGLES-1.
;; - We want to extend XLIB:COLOR into something with alpha channel.
;; How to name it?
;; - WITH-UNIFORM-COLOR-PICTURE (var picture r g b &optional alpha) &body body
;;
;; Example:
;; (WITH-UNIFORM-COLOR-PICTURE (color dest 1.0 1.0 0.0)
;; (RENDER-TRIANGLE dest color ...))
;; - Pose the filter and the transform slots of a picture.
;; - Also introduce a PICTURE-DEFAULT-MASK-FORMAT?
;; - COPY-PICTURE?
;; - WITH-PICTURE-OPTIONS ?
;;
;; (WITH-PICTURE-OPTIONS (pic :repeat :on) ...)
;; - WITH-PICTURE ?
;;
;; (WITH-PICTURE (picture drawable ...) ...)
;;
(in-package :xlib)
;; Beginning to collect the external interface for documentation.
(export '(render-create-picture
render-free-picture
render-create-glyph-set
render-reference-glyph-set
render-free-glyph-set
render-add-glyph
render-add-glyph-from-picture
render-free-glyph
render-fill-rectangle
picture-format-display
picture-format-id
picture-format-type
picture-format-depth
picture-format-red-byte
picture-format-green-byte
picture-format-blue-byte
picture-format-alpha-byte
picture-format-colormap
;; picture object
picture-repeat
picture-alpha-map
picture-alpha-x-origin
picture-alpha-y-origin
picture-clip-x-origin
picture-clip-y-origin
picture-clip-mask
picture-graphics-exposures
picture-subwindow-mode
picture-poly-edge
picture-poly-mode
picture-dither
picture-component-alpha
picture-drawable
find-matching-picture-formats
find-window-picture-format
render-free-picture
render-free-glyph-set
render-query-version
;; render-query-picture-formats
render-fill-rectangle
render-composite
render-create-glyph-set
render-reference-glyph-set
render-composite-glyphs
render-add-glyph
render-add-glyph-from-picture
render-free-glyphs))
(pushnew :clx-ext-render *features*)
(define-extension "RENDER")
;;;; Request constants
;; Note: Although version numbers are given render.h where the request
;; numbers are defined, render-query-version returns 0.0 all displays
;; i tested. --GB 2004-07-21
(defconstant +X-RenderQueryVersion+ 0) ;done
(defconstant +X-RenderQueryPictFormats+ 1)
(defconstant +X-RenderQueryPictIndexValues+ 2) ;0.7
(defconstant +X-RenderQueryDithers+ 3)
(defconstant +X-RenderCreatePicture+ 4) ;done
(defconstant +X-RenderChangePicture+ 5) ;done
(defconstant +X-RenderSetPictureClipRectangles+ 6) ;done
(defconstant +X-RenderFreePicture+ 7) ;done
(defconstant +X-RenderComposite+ 8) ;we need better arglist
(defconstant +X-RenderScale+ 9)
(defconstant +X-RenderTrapezoids+ 10) ;low-level done
(defconstant +X-RenderTriangles+ 11) ;low-level done
(defconstant +X-RenderTriStrip+ 12)
(defconstant +X-RenderTriFan+ 13)
(defconstant +X-RenderColorTrapezoids+ 14) ;nyi in X server, not mentioned in renderproto.h
(defconstant +X-RenderColorTriangles+ 15) ;nyi in X server, not mentioned in renderproto.h
(defconstant +X-RenderTransform+ 16) ;commented out in render.h
(defconstant +X-RenderCreateGlyphSet+ 17) ;done
(defconstant +X-RenderReferenceGlyphSet+ 18) ;done
(defconstant +X-RenderFreeGlyphSet+ 19) ;done
(defconstant +X-RenderAddGlyphs+ 20) ;done, untested
(defconstant +X-RenderAddGlyphsFromPicture+ 21) ;done, untested
(defconstant +X-RenderFreeGlyphs+ 22) ;done, untested
(defconstant +X-RenderCompositeGlyphs8+ 23) ;done
(defconstant +X-RenderCompositeGlyphs16+ 24) ;done
(defconstant +X-RenderCompositeGlyphs32+ 25) ;done
;; >= 0.1
(defconstant +X-RenderFillRectangles+ 26) ;single rectangle version done
;; >= 0.5
(defconstant +X-RenderCreateCursor+ 27)
;; >= 0.6
(defconstant +X-RenderSetPictureTransform+ 28) ;I don't understand what this one should do.
(defconstant +X-RenderQueryFilters+ 29) ;seems to be there on server side
; some guts of its implementation there.
(defconstant +X-RenderSetPictureFilter+ 30)
(defconstant +X-RenderCreateAnimCursor+ 31) ;What has render to do with cursors?
;;;;
;; Sanity measures:
;; We do away with the distinction between pict-format and
;; picture-format-info. That is we cache picture-format-infos.
(defstruct render-info
major-version
minor-version
picture-formats)
(defun display-render-info (display)
(getf (xlib:display-plist display) 'render-info))
(defun (setf display-render-info) (new-value display)
(setf (getf (xlib:display-plist display) 'render-info)
new-value))
(defun ensure-render-initialized (display)
"Ensures that the RENDER extension is initialized. Should be called
by every function, which attempts to generate RENDER requests."
;; xxx locking?
(unless (display-render-info display)
(let ((q (make-render-info)))
(multiple-value-bind (maj min) (render-query-version display)
(setf (render-info-major-version q) maj
(render-info-minor-version q) min)
(setf (render-info-picture-formats q)
(make-hash-table :test #'eql))
(dolist (pf (render-query-picture-formats display))
(setf (gethash (picture-format-id pf) (render-info-picture-formats q))
pf))
(setf (display-render-info display) q)))))
(defun find-matching-picture-formats
(display
&key depth-min depth-max depth
red-min red-max red
green-min green-max green
blue-min blue-max blue
alpha-min alpha-max alpha
type
colormap)
;;
(ensure-render-initialized display)
(let ((res nil))
(maphash (lambda (k f)
(declare (ignore k))
(when (and
(or (null type) (eql (picture-format-type f) type))
(or (null colormap) (eql (picture-format-colormap f) colormap))
;; min
(or (null depth-min) (>= (picture-format-depth f) depth-min))
(or (null red-min) (>= (byte-size (picture-format-red-byte f)) red-min))
(or (null green-min) (>= (byte-size (picture-format-green-byte f)) green-min))
(or (null blue-min) (>= (byte-size (picture-format-blue-byte f)) blue-min))
(or (null alpha-min) (>= (byte-size (picture-format-alpha-byte f)) alpha-min))
;; max
(or (null depth-max) (<= (picture-format-depth f) depth-max))
(or (null red-max) (<= (byte-size (picture-format-red-byte f)) red-max))
(or (null green-max) (<= (byte-size (picture-format-green-byte f)) green-max))
(or (null blue-max) (<= (byte-size (picture-format-blue-byte f)) blue-max))
(or (null alpha-max) (<= (byte-size (picture-format-alpha-byte f)) alpha-max))
;; match
(or (null depth) (= (picture-format-depth f) depth))
(or (null red) (= (byte-size (picture-format-red-byte f)) red))
(or (null green) (= (byte-size (picture-format-green-byte f)) green))
(or (null blue) (= (byte-size (picture-format-blue-byte f)) blue))
(or (null alpha) (= (byte-size (picture-format-alpha-byte f)) alpha)))
(pushnew f res)))
(render-info-picture-formats
(display-render-info display)))
res))
(defun find-window-picture-format (window)
"Find the picture format which matches the given window."
(let* ((vi (window-visual-info window))
(display (window-display window)))
(ensure-render-initialized display)
(case (visual-info-class vi)
((:true-color)
(maphash (lambda (k f)
(declare (ignore k))
(when (and (eql (picture-format-type f) :direct)
(eql (picture-format-depth f) (drawable-depth window))
(eql (dpb -1 (picture-format-red-byte f) 0)
(visual-info-red-mask vi))
(eql (dpb -1 (picture-format-green-byte f) 0)
(visual-info-green-mask vi))
(eql (dpb -1 (picture-format-blue-byte f) 0)
(visual-info-blue-mask vi))
(eql (byte-size (picture-format-alpha-byte f)) 0))
(return-from find-window-picture-format f)))
(render-info-picture-formats
(display-render-info display))))
(t
))))
(eval-when (:compile-toplevel :load-toplevel :execute)
(define-accessor picture (32)
((index) index :blip)
((index thing) `(resource-id-put ,index (picture-id ,thing))))
(define-accessor glyph-set (32)
((index) index :blip)
((index thing) `(resource-id-put ,index (glyph-set-id ,thing)))))
;;; picture format
(defstruct picture-format
display
(id 0 :type (unsigned-byte 29))
type
depth
red-byte
green-byte
blue-byte
alpha-byte
colormap)
(defmethod print-object ((object picture-format) stream)
(let ((abbrev
(with-output-to-string (bag)
;; build an abbreviated representation of the format
(let ((bytes (sort (list (cons "r" (picture-format-red-byte object))
(cons "g" (picture-format-green-byte object))
(cons "b" (picture-format-blue-byte object))
(cons "a" (picture-format-alpha-byte object)))
#'>
:key #'(lambda (x) (byte-position (cdr x))))))
(dolist (k bytes)
(unless (zerop (byte-size (cdr k)))
(format bag " ~A~D" (car k) (byte-size (cdr k)))))))))
(print-unreadable-object (object stream :type t :identity nil)
(format stream "~D ~S ~S ~S~A"
(picture-format-id object)
(picture-format-colormap object)
(picture-format-depth object)
(picture-format-type object) abbrev))))
(eval-when (:compile-toplevel :load-toplevel :execute)
(define-accessor picture-format (32)
((index) `(gethash (read-card32 ,index)
(render-info-picture-formats (display-render-info .display.))))
((index thing) `(write-card32 ,index (picture-format-id ,thing))))
(define-accessor render-op (8)
((index) `(member8-get ,index
:clear :src :dst :over :over-reverse :in :in-reverse
:out :out-reverse :atop :atop-reverse :xor :add :saturate
'#:undefined-pict-op-Eh '#:undefined-pict-op-Fh
:disjoint-clear :disjoint-src :disjoint-dst :disjoint-over
:disjoint-over-reverse :disjoint-in :disjoint-in-reverse
:disjoint-out :disjoint-out-reverse :disjoint-atop
:disjoint-atop-reverse :disjoint-xor
'#:undefined-pict-op-1Ch '#:undefined-pict-op-1Dh
'#:undefined-pict-op-1Eh '#:undefined-pict-op-1Fh
:conjoint-clear :conjoint-src :conjoint-dst :conjoint-over
:conjoint-over-reverse :conjoint-in :conjoint-in-reverse
:conjoint-out :conjoint-out-reverse :conjoint-atop
:conjoint-atop-reverse :conjoint-xor))
((index thing) `(member8-put ,index ,thing
:clear :src :dst :over :over-reverse :in :in-reverse
:out :out-reverse :atop :atop-reverse :xor :add :saturate
'#:undefined-pict-op-Eh '#:undefined-pict-op-Fh
:disjoint-clear :disjoint-src :disjoint-dst :disjoint-over
:disjoint-over-reverse :disjoint-in :disjoint-in-reverse
:disjoint-out :disjoint-out-reverse :disjoint-atop
:disjoint-atop-reverse :disjoint-xor
'#:undefined-pict-op-1Ch '#:undefined-pict-op-1Dh
'#:undefined-pict-op-1Eh '#:undefined-pict-op-1Fh
:conjoint-clear :conjoint-src :conjoint-dst :conjoint-over
:conjoint-over-reverse :conjoint-in :conjoint-in-reverse
:conjoint-out :conjoint-out-reverse :conjoint-atop
:conjoint-atop-reverse :conjoint-xor)))
(deftype render-op ()
'(member :clear :src :dst :over :over-reverse :in :in-reverse
:out :out-reverse :atop :atop-reverse :xor :add :saturate
:disjoint-clear :disjoint-src :disjoint-dst :disjoint-over
:disjoint-over-reverse :disjoint-in :disjoint-in-reverse
:disjoint-out :disjoint-out-reverse :disjoint-atop
:disjoint-atop-reverse :disjoint-xor
:conjoint-clear :conjoint-src :conjoint-dst :conjoint-over
:conjoint-over-reverse :conjoint-in :conjoint-in-reverse
:conjoint-out :conjoint-out-reverse :conjoint-atop
:conjoint-atop-reverse :conjoint-xor)))
;; Now these pictures objects are like graphics contexts. I was about
;; to introduce a synchronous mode, realizing that the RENDER protocol
;; provides no provision to actually query a picture object's values.
;; *sigh*
(def-clx-class (picture (:copier nil))
(id 0 :type resource-id)
(display nil :type (or null display))
(plist nil :type list) ; Extension hook
(format)
(%changed-p)
(%server-values)
(%values)
(%drawable))
(defun picture-drawable (picture)
(picture-%drawable picture))
;; xx make id, display, format readonly
(defun %render-change-picture-clip-rectangles (picture rectangles)
"Dont call me, use (SETF PICTURE-CLIP-MASK) instead."
(declare (optimize (speed 0)))
(let ((display (picture-display picture)))
(ensure-render-initialized display)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderSetPictureClipRectangles+)
(picture picture)
(int16 (picture-clip-x-origin picture))
(int16 (picture-clip-y-origin picture))
((sequence :format int16) rectangles))))
(macrolet ((foo (&rest specs)
`(progn
,@(loop for (type slot default) in specs
for index from 0
collect
`(progn
(defun ,(xintern 'picture- slot) (picture)
(aref (picture-%values picture) ,index))
(defun (setf ,(xintern 'picture- slot)) (new-value picture)
(setf (picture-%changed-p picture) t)
(setf (aref (picture-%values picture) ,index) new-value))))
(defun synchronise-picture-state (picture)
(when (picture-%changed-p picture)
(let ((display (picture-display picture)))
(ensure-render-initialized display)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderChangePicture+)
(picture picture)
(mask
,@(loop for (type slot default) in specs
for index from 0
collect
`(,type (and
,(cond ((eql slot 'clip-mask)
`(not (typep (aref (picture-%values picture) ,index)
'sequence)))
(t
't))
(not (eq (aref (picture-%values picture) ,index)
(aref (picture-%server-values picture) ,index)))
(setf (aref (picture-%server-values picture) ,index)
(aref (picture-%values picture) ,index))))))))
,(let ((index (position 'clip-mask specs :key #'second)))
`(unless (eql (aref (picture-%values picture) ,index)
(aref (picture-%server-values picture)
,index))
(%render-change-picture-clip-rectangles
picture (aref (picture-%values picture) ,index))
(setf (aref (picture-%server-values picture) ,index)
(aref (picture-%values picture) ,index))))
(setf (picture-%changed-p picture) nil)))
(defun render-create-picture
(drawable
&key format
(picture (make-picture :display (drawable-display drawable)))
,@(loop for (type slot default-value) in specs
collect (cond ((eql slot 'clip-mask)
`(clip-mask :none))
(t
slot)))
)
;; xxx also offer to give a colormap instead of a picture-format
;; values!
(let ((display (drawable-display drawable)))
(ensure-render-initialized display)
(unless format
;; xxx check for drawable being a window
(setf format (find-window-picture-format drawable)))
(let ((pid (allocate-resource-id display picture 'picture)))
(setf (picture-id picture) pid)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderCreatePicture+)
(resource-id pid)
(drawable drawable)
(picture-format format)
(mask
,@(loop for (type slot default) in specs
collect
(cond ((eql slot 'clip-mask)
(list type `(and
(not (typep clip-mask 'sequence))
clip-mask)))
(t
(list type slot)))))))
(when (typep clip-mask 'sequence)
(%render-change-picture-clip-rectangles picture clip-mask))
(setf (picture-format picture) format)
(setf (picture-%server-values picture)
(vector ,@(loop for (type slot default) in specs
collect
`(or ,slot ,default))))
(setf (picture-%values picture) (copy-seq (picture-%server-values picture)))
(setf (picture-%drawable picture) drawable)
picture))
(defconstant +picture-state-length+
,(length specs)) )))
(foo ((member :off :on) repeat :off)
((or (member :none) picture) alpha-map :none)
(int16 alpha-x-origin 0)
(int16 alpha-y-origin 0)
(int16 clip-x-origin 0)
(int16 clip-y-origin 0)
;; ### Now that is not correct is it?:
((or (member :none) pixmap) clip-mask :none)
((member :off :on) graphics-exposures :on)
((member :clip-by-children :include-inferiors) subwindow-mode :clip-by-children)
((member :sharp :smooth) poly-edge :smooth)
((member :precise :imprecise) poly-mode :precise)
((or (member :none) #||xatom||#) dither :none)
((member :off :on) component-alpha :off)))
(defun render-free-picture (picture)
(let ((display (picture-display picture)))
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderFreePicture+)
(picture picture))))
(defun render-free-glyph-set (glyph-set)
(let ((display (glyph-set-display glyph-set)))
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderFreeGlyphSet+)
(glyph-set glyph-set))))
(defun render-query-version (display)
(with-buffer-request-and-reply (display (extension-opcode display "RENDER") nil)
((data +X-RenderQueryVersion+)
(card32 0)
(card32 1))
(values
(card32-get 8)
(card32-get 12) )))
(defun render-query-picture-formats (display)
(with-buffer-request-and-reply (display (extension-opcode display "RENDER") nil)
((data +X-RenderQueryPictFormats+))
(let ((n-picture-formats (card32-get 8))
(n-screens (card32-get 12))
(n-depths (card32-get 16))
(n-visuals (card32-get 20))
(n-subpixel (card32-get 24)))
(declare (ignore n-screens n-depths n-visuals n-subpixel))
(loop for i below n-picture-formats
collect
(let ((off (+ (* 8 4)
(* i 28)))) ;size of picture-format-info
(make-picture-format
:display display
:id (card32-get (+ off 0))
:type (member8-get (+ off 4) :indexed :direct)
:depth (card8-get (+ off 5))
:red-byte (byte (integer-length (card16-get (+ off 10)))
(card16-get (+ off 8)))
:green-byte (byte (integer-length (card16-get (+ off 14)))
(card16-get (+ off 12)))
:blue-byte (byte (integer-length (card16-get (+ off 18)))
(card16-get (+ off 16)))
:alpha-byte (byte (integer-length (card16-get (+ off 22)))
(card16-get (+ off 20)))
:colormap (let ((cmid (card32-get (+ off 24))))
(unless (zerop cmid)
(lookup-colormap display cmid)))))))))
(defun render-fill-rectangle (picture op color x1 y1 w h)
(let ((display (picture-display picture)))
(ensure-render-initialized display)
(synchronise-picture-state picture)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderFillRectangles+)
(render-op op) ;op
(card8 0) ;pad
(card16 0) ;pad
(resource-id (picture-id picture))
(card16 (elt color 0)) (card16 (elt color 1)) (card16 (elt color 2)) (card16 (elt color 3))
(int16 x1) (int16 y1) (card16 w) (card16 h))))
;; fill rectangles, colors.
(defun render-triangles-1 (picture op source src-x src-y format coord-sequence)
;; For performance reasons we do a special typecase on (simple-array
;; (unsigned-byte 32) (*)), so that it'll be possible to have high
;; performance rasters.
(macrolet ((guts ()
'(let ((display (picture-display picture)))
(synchronise-picture-state picture)
(synchronise-picture-state source)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderTriangles+)
(render-op op) ;op
(card8 0) ;pad
(card16 0) ;pad
(resource-id (picture-id source))
(resource-id (picture-id picture))
(picture-format format)
(int16 src-x)
(int16 src-y)
((sequence :format int32) coord-sequence) ))))
(typecase coord-sequence
((simple-array (unsigned-byte 32) (*))
(locally
(declare (type (simple-array (unsigned-byte 32) (*)) coord-sequence))
(guts)))
(t
(guts)))))
#||
(defun render-set-picture-transform (picture mxx mxy dx mxy myy dy &optional (mwx 0) (mwy 0) (dw 1))
...)
||#
(defun render-set-picture-transform (picture a b c d e f p q r)
(let ((display (picture-display picture)))
(ensure-render-initialized display)
(synchronise-picture-state picture)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderSetPictureTransform+)
#|
(card8 0) ;; render-op op) ;op
(card8 0) ;pad
(card16 0) ;pad
|#
(resource-id (picture-id picture))
(card32 a)
(card32 b)
(card32 c)
(card32 d)
(card32 e)
(card32 f)
(card32 p)
(card32 q)
(card32 r))))
(defun render-query-filters (drawable)
(let ((display (drawable-display drawable)))
(with-buffer-request-and-reply (display (extension-opcode display "RENDER") nil)
((data +X-RenderQueryFilters+)
(drawable drawable))
(let* ((len (card32-get 4))
(n-aliases (card32-get 8))
(n-filters (card32-get 12))
(off (+ (* 8 4) (* 4 (ceiling (* 2 n-aliases) 4)))))
(print (list :aliases
(loop for i below n-aliases collect (card16-get (+ (* 8 4) (* i 2))))))
(print (list :foo len n-aliases n-filters
(loop for i below len
collect (card8-get (+ off 0 (* 4 i)))
collect (card8-get (+ off 1 (* 4 i)))
collect (card8-get (+ off 2 (* 4 i)))
collect (card8-get (+ off 3 (* 4 i))))))
(print
(labels ((grab-string (j)
(let ((n (card8-get j)))
(incf j)
(values
(map 'string #'code-char (loop repeat n collect (card8-get j) do (incf j)))
j))))
(loop repeat n-filters collect
(multiple-value-bind (s j) (grab-string off)
(setf off j)
(intern (string-upcase s) :keyword)))))
#+NIL
(loop for i below n-picture-formats
collect
(let ((off (+ (* 8 4)
(* i 28)))) ;size of picture-format-info
(make-picture-format
:display display
:id (card32-get (+ off 0))
:type (member8-get (+ off 4) :indexed :direct)
:depth (card8-get (+ off 5))
:red-byte (byte (integer-length (card16-get (+ off 10)))
(card16-get (+ off 8)))
:green-byte (byte (integer-length (card16-get (+ off 14)))
(card16-get (+ off 12)))
:blue-byte (byte (integer-length (card16-get (+ off 18)))
(card16-get (+ off 16)))
:alpha-byte (byte (integer-length (card16-get (+ off 22)))
(card16-get (+ off 20)))
:colormap (let ((cmid (card32-get (+ off 24))))
(unless (zerop cmid)
(lookup-colormap display cmid))))))))))
(defun render-set-filter (picture filter)
(let ((display (picture-display picture)))
(ensure-render-initialized display)
(synchronise-picture-state picture)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderSetPictureFilter+)
(resource-id (picture-id picture))
(card16 (length filter))
(card16 0) ;pad
((sequence :format card8) (map 'vector #'char-code filter)))))
#||
(defun render-triangle (destination source x1 y1 x2 y2 x3 y3 &key (src-x 0) (src-y 0) (format nil) (op :over))
(render-triangles-1 destination op source ...)
)
||#
(defun render-trapezoids-1 (picture op source src-x src-y mask-format coord-sequence)
;; coord-sequence is top bottom
;; line-1-x1 line-1-y1 line-1-x2 line-1-y2
;; line-2-x1 line-2-y1 line-2-x2 line-2-y2 ...
;;
(let ((display (picture-display picture)))
(synchronise-picture-state picture)
(synchronise-picture-state source)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderTrapezoids+)
(render-op op) ;op
(card8 0) ;pad
(card16 0) ;pad
(resource-id (picture-id source))
(resource-id (picture-id picture))
((or (member :none) picture-format) mask-format)
(int16 src-x)
(int16 src-y)
((sequence :format int32) coord-sequence) )))
(defun render-composite (op
source mask dest
src-x src-y mask-x mask-y dst-x dst-y
width height)
(let ((display (picture-display source)))
(synchronise-picture-state source)
(when mask (synchronise-picture-state mask))
(synchronise-picture-state dest)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderComposite+)
(render-op op) ;op
(card8 0) ;pad
(card16 0) ;pad
(resource-id (picture-id source))
(resource-id (if mask (picture-id mask) 0))
(resource-id (picture-id dest))
(int16 src-x)
(int16 src-y)
(int16 mask-x)
(int16 mask-y)
(int16 dst-x)
(int16 dst-y)
(card16 width)
(card16 height))))
(def-clx-class (glyph-set (:copier nil)
)
(id 0 :type resource-id)
(display nil :type (or null display))
(plist nil :type list) ; Extension hook
(format))
(defun render-create-glyph-set (format &key glyph-set)
(let ((display (picture-format-display format)))
(let* ((glyph-set (or glyph-set (make-glyph-set :display display)))
(gsid (setf (glyph-set-id glyph-set)
(allocate-resource-id display glyph-set 'glyph-set))))
(declare (ignore gsid))
(setf (glyph-set-format glyph-set) format)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderCreateGlyphSet+)
(glyph-set glyph-set)
(picture-format format))
glyph-set)))
(defun render-reference-glyph-set (existing-glyph-set &key glyph-set)
(let ((display (glyph-set-display existing-glyph-set)))
(let* ((glyph-set (or glyph-set (make-glyph-set :display display)))
(gsid (setf (glyph-set-id glyph-set)
(allocate-resource-id display glyph-set 'glyph-set))))
(declare (ignore gsid))
(setf (glyph-set-format glyph-set)
(glyph-set-format existing-glyph-set))
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderReferenceGlyphSet+)
(glyph-set glyph-set)
(glyph-set existing-glyph-set))
glyph-set)))
(defun render-composite-glyphs-8 (dest glyph-set source dest-x dest-y sequence
&key (op :over)
(alu op) ;for the fun of it
(src-x 0)
(src-y 0)
(mask-format :none)
(start 0)
(end (length sequence)))
(let ((display (picture-display dest)))
(ensure-render-initialized display)
(synchronise-picture-state dest)
(synchronise-picture-state source)
(when (stringp sequence)
;; lazy me, but then you should not confuse glyphs with
;; characters anyway.
(setf sequence (map 'vector #'char-code sequence)))
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderCompositeGlyphs8+)
(render-op alu)
(card8 0) (card16 0) ;padding
(picture source)
(picture dest)
((or (member :none) picture-format) mask-format)
(glyph-set glyph-set)
(int16 src-x) (int16 src-y)
(card8 (- end start)) ;length of glyph elt
(card8 0) (card16 0) ;padding
(int16 dest-x) (int16 dest-y) ;dx, dy
((sequence :format card8) sequence))))
(defmacro %render-composite-glyphs
(opcode type transform display dest glyph-set source dest-x dest-y sequence
alu src-x src-y mask-format start end)
(let ((size (ecase type (card8 1) (card16 2) (card32 4)))
;; FIXME: the last chunk for CARD8 can be 254.
(chunksize (ecase type (card8 252) (card16 254) (card32 254))))
`(multiple-value-bind (nchunks leftover)
(floor (- end start) ,chunksize)
(let* ((payloadsize (+ (* nchunks (+ 8 (* ,chunksize ,size)))
(if (> leftover 0)
(+ 8 (* 4 (ceiling (* leftover ,size) 4)))
0)))
(request-length (+ 7 (/ payloadsize 4))))
(declare (integer request-length))
(with-buffer-request (,display (extension-opcode ,display "RENDER") :length (* 4 request-length))
(data ,opcode)
(length request-length)
(render-op ,alu)
(card8 0) (card16 0) ;padding
(picture ,source)
(picture ,dest)
((or (member :none) picture-format) ,mask-format)
(glyph-set ,glyph-set)
(int16 ,src-x) (int16 ,src-y)
(progn
(let ((boffset (+ buffer-boffset 28))
(start ,start)
(end ,end)
(dest-x ,dest-x)
(dest-y ,dest-y))
(dotimes (i nchunks)
(set-buffer-offset boffset)
(put-items (0)
(card8 ,chunksize)
(card8 0)
(card16 0)
(int16 dest-x)
(int16 dest-y)
((sequence :start start :end (+ start ,chunksize) :format ,type :transform ,transform :appending t) ,sequence))
(setq dest-x 0 dest-y 0)
(incf boffset (+ 8 (* ,chunksize ,size)))
(incf start ,chunksize))
(when (> leftover 0)
(set-buffer-offset boffset)
(put-items (0)
(card8 leftover)
(card8 0)
(card16 0)
(int16 dest-x)
(int16 dest-y)
((sequence :start start :end end :format ,type :transform ,transform :appending t) ,sequence))
;; padding?
(incf boffset (+ 8 (* 4 (ceiling (* leftover ,size) 4)))))
(setf (buffer-boffset ,display) boffset))))))))
(defun render-composite-glyphs (dest glyph-set source dest-x dest-y sequence
&key (op :over)
(alu op) ;for the fun of it
(src-x 0)
(src-y 0)
(mask-format :none)
(start 0)
(end (length sequence)))
;; xxx do we want to go with some translate function as draw-glyphs?
(declare (type array-index start end))
(let ((display (picture-display dest)))
(ensure-render-initialized display)
(synchronise-picture-state dest)
(synchronise-picture-state source)
;; hmm find out the element size
(typecase sequence
((array (unsigned-byte 8) (*))
(%render-composite-glyphs +X-RenderCompositeGlyphs8+ card8 nil
display dest glyph-set source dest-x dest-y sequence alu src-x
src-y mask-format start end))
((array (unsigned-byte 16) (*))
(%render-composite-glyphs +X-RenderCompositeGlyphs16+ card16 nil
display dest glyph-set source dest-x dest-y sequence alu src-x
src-y mask-format start end))
((array (unsigned-byte 32) (*))
(%render-composite-glyphs +X-RenderCompositeGlyphs32+ card32 nil
display dest glyph-set source dest-x dest-y sequence alu src-x
src-y mask-format start end))
(string
(%render-composite-glyphs #.(cond ((<= char-code-limit (expt 2 8)) '+X-RenderCompositeGlyphs8+)
((<= char-code-limit (expt 2 16)) '+X-RenderCompositeGlyphs16+)
((<= char-code-limit (expt 2 32)) '+X-RenderCompositeGlyphs32+)
(t
(error "Wow!")))
#.(cond ((<= char-code-limit (expt 2 8)) 'card8)
((<= char-code-limit (expt 2 16)) 'card16)
((<= char-code-limit (expt 2 32)) 'card32)
(t
(error "Wow!")))
#'char-code
display dest glyph-set source dest-x dest-y sequence alu src-x
src-y mask-format start end))
(t
;; should we bother testing the array element type?
(%render-composite-glyphs +X-RenderCompositeGlyphs32+ card32
#'(lambda (elt)
(if (characterp elt)
(char-code elt)
elt))
display dest glyph-set source dest-x dest-y sequence alu src-x
src-y mask-format start end))) ))
;; --- idea: Allow data to be an image to avoid unecessary consing? - noss
(defun render-add-glyph (glyph-set id &key x-origin y-origin x-advance y-advance data)
(let ((display (glyph-set-display glyph-set)))
(ensure-render-initialized display)
(let* ((w (array-dimension data 1))
(h (array-dimension data 0))
(bitmap-format (display-bitmap-format display))
(unit (bitmap-format-unit bitmap-format))
(byte-lsb-first-p (display-image-lsb-first-p display))
(bit-lsb-first-p (bitmap-format-lsb-first-p bitmap-format)))
(let* ((byte-per-line (* 4 (ceiling
(* w (picture-format-depth (glyph-set-format glyph-set)))
32)))
(request-length (+ 28
(* h byte-per-line))))
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderAddGlyphs+)
(length (ceiling request-length 4))
(glyph-set glyph-set)
(card32 1) ;number glyphs
(card32 id) ;id
(card16 w)
(card16 h)
(int16 x-origin)
(int16 y-origin)
(int16 x-advance)
(int16 y-advance)
(progn
(setf (buffer-boffset display) (advance-buffer-offset 28))
(let ((im (create-image :width w :height h :depth 8 :data data)))
(write-image-z display im 0 0 w h
byte-per-line ;padded bytes per line
unit byte-lsb-first-p bit-lsb-first-p)) ))) )))
(defun render-add-glyph-from-picture (glyph-set picture
&key x-origin y-origin x-advance y-advance
x y width height)
;; untested, the duplication of x-origin seems bogus.
;; Still untested, but these modifications seem to be more likely, (x,y) would be the offset into the picture.
;; and orgin advance would be properties of the defined glyph.
(let ((display (glyph-set-display glyph-set)))
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderAddGlyphsFromPicture+)
(glyph-set glyph-set)
(picture picture)
(card16 width)
(card16 height)
(card16 x-origin)
(card16 y-origin)
(card16 x-advance)
(card16 y-advance)
(card16 x)
(card16 y))))
;; untested
(defun render-free-glyphs (glyph-set glyphs)
"This request removes glyphs from glyph-set. Each glyph must exist in glyph-set (else a Match error results)."
(let ((display (glyph-set-display glyph-set)))
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderFreeGlyphs+)
(glyph-set glyph-set)
((sequence :format card32) glyphs))))
#||
;;; --------------------------------------------------------------------------------
;; testing code:
(defun x (op)
(let ((dpy (open-display "")))
(render-query-version dpy)
(unwind-protect
(let* ((win (screen-root (first (display-roots dpy))))
(display dpy)
(pf (find-window-picture-format win))
(pm (xlib:create-pixmap
:depth (xlib:drawable-depth win)
:drawable win :width 1 :height 1))
(pm.p (render-create-picture pm
:format pf
:repeat :on))
(win.p (render-create-picture win :format pf))
(gs (render-create-glyph-set (first
(find-matching-picture-formats
dpy
:alpha 8
:red-max 0
:green-max 0
:blue-max 0)))))
(xlib:clear-area win)
(render-fill-rectangle pm.p :src (list #xFFFF 0 0 0) 0 0 100 100)
(render-add-glyph gs 18
:data (make-array (list 3 3)
:initial-contents '((255 000 000)
(000 255 000)
(000 000 255))
:element-type '(unsigned-byte 8))
:x-advance 4
:y-advance 0
:x-origin 0
:y-origin 0)
(let ((w 50)
(h 50))
(let ((data (make-array (list h w) :element-type '(unsigned-byte 8) :initial-element 0)))
(dotimes (i w)
(dotimes (j h)
(setf (aref data i j) (* 3 i))))
(render-add-glyph gs 17
:data data
:x-advance (+ w 2)
:y-advance 0
:x-origin 0
:y-origin 0)))
(render-composite-glyphs-8 win.p gs pm.p
200 330
(vector 17 18 18 17 17 17 17 17 17 17)
:alu op
)
;;
(display-finish-output dpy)
(close-display dpy)))))
(defun z (op)
(let ((dpy (open-display "")))
(unwind-protect
(let* ((win (screen-root (first (display-roots dpy))))
(pic (render-create-picture win))
(fmt (first (find-matching-picture-formats
dpy
:red-min 8
:green-min 8
:blue-min 8
:alpha-min 8)))
(px (xlib:create-pixmap :width 256 :height 256 :depth (picture-format-depth fmt)
:drawable win))
(px.pic (render-create-picture px :format fmt))
(px.gc (xlib:create-gcontext :drawable px)))
(xlib:clear-area win)
;;
(render-fill-rectangle px.pic :src
(list #x8000 #x0000 #x8000 #xFFFF)
0 0 256 256)
(render-composite :src pic pic px.pic
350 350 350 350 0 0 256 256)
;;
(render-fill-rectangle px.pic :over
(list #x8000 #x8000 #x8000 #x8000)
0 0 100 100)
(render-composite :src
px.pic px.pic pic
0 0 0 0 350 350
256 256)
(render-fill-rectangle pic op (list #x0 #x0 #x0 #x8000) 200 200 800 800)
(display-finish-output dpy))
(close-display dpy))))
;;; ----------------------------------------------------------------------------------------------------
(defun y (op)
(let ((dpy (open-display "")))
(render-query-version dpy)
(unwind-protect
(let* ((win (screen-root (first (display-roots dpy))))
(pic
(render-create-picture win))
(px (xlib:create-pixmap :drawable win
:width 256
:height 256
:depth 32))
(px.gc (xlib:create-gcontext :drawable px)))
(dotimes (x 256)
(dotimes (y 256)
(setf (xlib:gcontext-foreground px.gc)
(dpb x (byte 8 24)
(dpb y (byte 8 16)
(dpb y (byte 8 8)
y))))
(xlib:draw-point px px.gc x y)
))
(xlib:clear-area win)
(let ((q (render-create-picture px
:format
(first (find-matching-picture-formats
dpy
:depth 32
:alpha 8 :red 8 :green 8 :blue 8))
:component-alpha :on
:repeat :off)))
(render-composite op
q
q
pic
0 0
0 0
100 100
400 400))
(let ()
;;(render-fill-rectangle pic op (list 255 255 255 255) 100 100 200 200)
(display-finish-output dpy)))
(close-display dpy))))
(defun zz ()
(let* ((dpy (xlib:open-display ""))
(win (screen-root (first (display-roots dpy))))
(pic (render-create-picture win)))
(xlib:clear-area win)
(setf (picture-clip-mask pic) (list 100 100 200 2000))
(render-fill-rectangle pic :over (list #xFFFF 0 0 #x400) 0 0 2000 2000)
(display-finish-output dpy)
(close-display dpy)))
||#
;;;; Cursors
(defun render-create-cursor (picture &optional (x 0) (y 0))
(let ((display (picture-display picture)))
(ensure-render-initialized display)
(synchronise-picture-state picture)
(let* ((cursor (make-cursor :display display))
(cid (allocate-resource-id display cursor 'cursor)))
(setf (cursor-id cursor) cid)
(with-buffer-request (display (extension-opcode display "RENDER"))
(data +X-RenderCreateCursor+)
(resource-id cid)
(resource-id (picture-id picture))
(card16 x)
(card16 y))
cursor)))
|