Improve transparent window test#14956
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This adds more alpha colours to hopefully diagnose problems with software transparency a bit better. Theoretically, the squares should be less visible the less alpha down, but with SDL_BLENDMODE_NONE, this is not the case, we need to use SDL_BLENDMODE_BLEND instead.
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Description
This adds more alpha colours to hopefully diagnose problems with software transparency a bit better.
Theoretically, the squares should be less visible the less alpha down, but with SDL_BLENDMODE_NONE, this is not the case, we need to use SDL_BLENDMODE_BLEND instead.
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