Alpha Blending and sRGB help!

LovelyBro · 2021-05-16T16:33:34

Hello, I am so confused about sRGB alpha blending if you have a destination of pure white (255,255,255) aka (1,1,1) and a source of pure black (0,0,0) then we know these values are the same in sRGB and Linear (1^2.2=1) and (0^2.2=0). now, we want to blend the black with 0.5 alpha. (src * alpha) + (dest * (1-alpha)) = new color ((0,0,0) * 0.5) + ((1,1,1) * (1-0.5)) = (0.5,0.5,0.5) now please, what color space is this new color?? If we say its linear, then later on display we have to convert it to srgb and so we do (0.5,0.5,0.5)^(1.0/2.2) = WRONG (too bright). if the new color is sRGB already, isnt it funny we can do from linear colors to sRGB inside the alpha blending suddenly?

Graphics and GPU Programming Programming

Started by LovelyBro May 16, 2021 04:33 PM

0 comments, last by LovelyBro 3 years, 8 months ago

Alpha Blending and sRGB help!

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Alpha Blending and sRGB help!

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