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function DrawingIntoTexturesTest(imagingmode)
if IsOctave
pkg load image;
end
AssertOpenGL;
screenid = max(Screen('Screens'));
if nargin < 1
imagingmode = [];
end
if isempty(imagingmode)
imagingmode = 0;
end
if imagingmode > 0
imagingmode = kPsychNeedFastBackingStore;
floatflag = 2;
else
imagingmode = 0;
floatflag = 0;
end
% Open window, with or without imaging pipeline:
win = Screen('OpenWindow', screenid, 255, [], [], [], [], [], imagingmode);
Screen('Blendfunction', win, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
for floatprec =0:floatflag
for layers=1:4
fprintf('Testing Drawing into %i layer textures of precision mode %i...\n', layers, floatprec);
inimg = imread([PsychtoolboxRoot 'PsychDemos/konijntjes1024x768.jpg']);
switch layers
case 1,
teximg = rgb2gray(inimg);
case 2,
teximg = randn(size(inimg, 1), size(inimg, 2), 2) * 255;
teximg(:,:,1) = rgb2gray(inimg);
case 3,
teximg = inimg;
case 4,
teximg = randn(size(inimg, 1), size(inimg, 2), 4) * 255;
teximg(:,:,1:3) = inimg;
end
if (floatprec>0)
teximg = double(teximg)/255.0;
end
tex = Screen('MakeTexture', win, teximg, [], [], floatprec);
DrawFormattedText(tex, ['Everything is fine with ' num2str(layers) ' layers of precision' num2str(floatprec) '...'], 'center', 'center');
Screen('DrawTexture', win, tex);
Screen('Flip', win);
while KbCheck; end;
KbWait;
end
end
Screen('CloseAll');
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