Is there an explanation somewhere about the decision to use RED (R,0,0,1) instead of INTENSITY (I,I,I,I) behavior for single-channel textures in GPU programming? It seems like the universally wrong method to standardize, but maybe I'm missing something?
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You pretty much have to special-case it in your shader and replicated the red channel out to the alpha channel at least, if not all 4 channels.
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It would be fine if they'd kept INTENSITY as an option, but they removed it and you only get RED now, and I just cannot fathom why they would do that...
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