Because the compiler evaluates the #ifdef only once, whereas the if() gets executed for every pixel every frame as Hummel says. So the #ifdef is here faster by definition .
TSG_Torsen: No, no performance issues. My laptop is really crappy at processing stuff like shaders, but this goes fine. Must be said that it isn't exactly a large area of pp shading here . My game is 352x512 pixels .
Last edited by Joozey; 12/16/1019:09.
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. My game is 352x512 pixels 
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