2012/2/28 Михаил Сидоров <[email protected]>

> Hello everyone. I've noticed that there is a strange outline appears when
> drawing a rotated sprite with RGBA texture. Here is a sample:
> http://omploader.org/vY3cwdw and here is what I see:
> http://omploader.org/vY3cxMQ. If you look closer you can see some dark
> pixels despite the image is a white circle on a transparent background. Is
> this a pyglet bug or one of OpenGL subtle things or something else? Is
> there any way to avoid it?


Your images don't load, but typically when you see a dark fringe on an
alpha blended texture, it is due to transparent pixels being the wrong
colour (i.e. black), and thus blending incorrectly where partially
transparent.

The best fix for this is to use pre-multiplied alpha for your transparent
images.

-- 
Tristam MacDonald
System Administrator, Suffolk University Math & CS Department
http://swiftcoder.wordpress.com/

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