/usr/share/psychtoolbox-3/PsychTests/TextBugTest.m is in psychtoolbox-3-common 3.0.11.20131230.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 87 88 89 | % TextBugTest
%
% Tests for the text bug where using textures before drawing texts causes
% 'DrawText' not to work. Reported by lots of people.
%
% TextBugTest tests both text before textures and textures before text.
%
% Screen should now pass this test.
% HISTORY
%
% mm/dd/yy
% 1/21/05 awi Wrote it.
% 1/25/05 awi Loop over both order conditions clearing the mex file between.
textFirst=0;
textureFirst=1;
drawTextureFlag=1; %flag specifying whether to draw the texture.
drawTextFlag=1; %flag specifying whether to draw the text.
try
for drawOrder=textFirst:textureFirst
clear mex;
if drawOrder==textureFirst
fprintf('Drawing texture before drawing text\n');
elseif drawOrder==textFirst
fprintf('Drawing text before drawing texture\n');
else
error('unrecognized drawing order flag');
end
% Chosing the display with the highest dislay number is
% a best guess about where you want the stimulus displayed.
screens=Screen('Screens');
screenNumber=max(screens);
% Make th
w=Screen('OpenWindow', screenNumber,0,[],32,2);
Screen('FillRect', w, 0);
Screen('Flip',w);
for i=1:2
%create the texture and draw it.
if drawTextureFlag && ( (i==1 && drawOrder==textureFirst) || (i==2 && ~(drawOrder==textureFirst)))
textureRectSize=100;
textureRectOrigin=[0 0 textureRectSize textureRectSize];
textureRect=OffsetRect(textureRectOrigin, 0, 0);
magicSquare=magic(textureRectSize);
normImage=round(magicSquare/max(max(magicSquare)) * 255);
tx=Screen('MakeTexture', w, normImage);
Screen('DrawTexture', w, tx, textureRectOrigin, textureRect);
fprintf(' Drawing Texture\n');
end %if
%create the text and draw it
if drawTextFlag ( (i==1 && ~(drawOrder==textureFirst)) || (i==2 && drawOrder==textureFirst))
Screen('TextFont',w, 'Courier');
Screen('TextSize',w, 50);
Screen('TextStyle', w, 0);
Screen('DrawText', w, 'Hello World!', 100, 200, [0, 0, 255, 255]);
Screen('TextFont',w, 'Times');
Screen('TextSize',w, 30);
Screen('DrawText', w, 'Hit the space bar to continue.', 100, 300, [255, 0, 0, 255]);
fprintf(' Drawing Text\n');
end %if
end %for
Screen('Flip',w);
%there seems to be a bug in KbWait where it won't proceed if we hit
%the return key. So requesst an arbitrary non-return key keypress.
%
fprintf('Press the space bar to continue\n');
KbWait;
Screen('CloseAll');
end % for drawOrder
catch
%this "catch" section executes in case of an error in the "try" section
%above. Importantly, it closes the onscreen window if its open.
Screen('CloseAll');
rethrow(lasterror);
end % try..catch
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