New answers tagged opengl-es2
You are not going to see any difference from fetching one channel over many. There is no optimization to make. Longer explanation: Texure is stored, you can guess without any doubt, by pixel in memory. Which means, r,g,b,a are packed together on the same place. (i.e. channels are interleaved). Fetching stuff from memory happens in batches of whatever the ...
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