AlphaImageDemo
Display a gaussian masked image, locked to the cursor position,
using the
Screen('
DrawTexture') command.
This illustrates an application of
OpenGL Alpha blending by displaying
an image masked with a gaussian transparency mask.
In each frame, first the image is drawn. Then a texture acting as a
transparency mask is drawn "over" the image, leaving only selected
parts of the image.
Please note that we only use two textures: One holding the image,
the other defining the mask.
see also:
PsychDemos,
MovieDemo,
DriftDemo
Psychtoolbox/PsychDemos/AlphaImageDemo/AlphaImageDemo.m