/usr/share/psychtoolbox-3/PsychGPGPU/testGLInterop.m is in psychtoolbox-3-common 3.0.14.20170103+git6-g605ff5c.dfsg1-1build1.
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 | function testGLInterop
PsychDefaultSetup(1);
GPUstart;
%memcpyCudaOpenGL(6, 1); % Be verbose.
%memcpyCudaOpenGL(5, 50); % Use 50 slots in LRU cache.
Screen('Preference','SkipSyncTests', 2);
PsychImaging('PrepareConfiguration');
%PsychImaging('AddTask', 'General', 'FloatingPoint32Bit');
w = PsychImaging('OpenWindow', 0, 0);
tex = ones(200, 200, 4);
% Read our beloved bunny image from filesystem:
bunnyimg = imread([PsychtoolboxRoot 'PsychDemos/konijntjes1024x768.jpg']);
bunnyimg(:,:,4) = 255;
% Maketexture in float precision with upright texture orientation:
bunnytex = Screen('MakeTexture', w, double(bunnyimg(:,:,1:2))/255, [], [], 2, 1);
bunre = Screen('Rect', bunnytex)
bunp = Screen('Pixelsize', bunnytex)
%bunnytex = Screen('Openoffscreenwindow', w, [1 1 0 0], [0 0 1024 768], 128);
%DrawFormattedText(bunnytex, 'HELLO WORLD!', 'center', 'center', [255 0 0]);
t = bunnytex;
Screen('DrawTexture', w, t);
if 0
T = GPUTypeFromToGL(0, w, 2);
end
Screen('Flip', w);
if 1
if 1
% Test high-level interface for pure mortals:
T = GPUTypeFromToGL(0, bunnytex, [], [], 0);
else
% Test low-level OpenGL object interface which does without any calls
% into Screen() -- Important for interop with non-ptb code and for use
% within imaging pipeline, ie., within Screen's execution context, as
% Screen is currently non-reentrant.
[texstruct.glhandle, texstruct.gltarget] = Screen('GetOpenGLTexture', w, t);
[texstruct.width, texstruct.height] = Screen('Windowsize', t);
texstruct.bpp = Screen('Pixelsize', t) / 8;
texstruct.nrchannels = 4;
T = GPUTypeFromToGL(0, texstruct, 1);
end
end
rect = Screen('Rect', t)
%T = GPUsingle(rand(1, 1024, 768));
foo = size(T)
H = T;
foo = size(H)
c = 0;
t0 = GetSecs;
while c < 500
%T = T .* 0.99;
H = T .* (0.5 + 0.5 * sin(GetSecs * 10));
if 1
t = GPUTypeFromToGL(1, H, 0, t, 0);
%ptr = GPUTypeFromToGL(6, t, 0);
%GPUTypeFromToGL(3, t, 0);
% Screen('Close', t);
% t = GPUTypeFromToGL(1, H, 0, [], 1);
Screen('DrawTexture', w, t, [], [], [], 0);
else
GPUTypeFromToGL(1, H, 2, w);
end
Screen('Flip', w, 0, 2, 2);
c = c + 1;
end
Screen('DrawingFinished', w, 2, 1);
fps = c / (GetSecs - t0);
gbs = fps * 2 * numel(T) * 4 / 1024 / 1024 / 1024;
fprintf('FPS = %f [%f GB/sec]\n', fps, gbs);
GPUTypeFromToGL(4);
sca;
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