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Color Space & GLSL
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Color Space & GLSL

  • Subject: Color Space & GLSL
  • From: Vincent Olivier <email@hidden>
  • Date: Sat, 28 Nov 2015 18:25:19 -0500
Hello!

I get my information from a 2011 message on this very mailing list here : http://lists.apple.com/archives/pro-apps-dev/2011/Aug/msg00099.html

Is this still valid? Does it apply to the GLSL 2D FxTexture input/output of the renderOutput method ?

To be clear, both FxBitmap and FxTexture images chromaticities are always sRGB/Rec. 709 and the desired gamma is set via kFxPropertyKey_DesiredProcessingColorInfo and to either one of the two (2) following values :


kFxImageColorInfo_RGB_LINEAR: for gamma 1 (linear)


kFxImageColorInfo_RGB_GAMMA_VIDEO:  for gamma 1.961 uniform, that is, without a transfer Rec. 709-like transfer function (see “Transfer characteristics” : https://en.wikipedia.org/wiki/Rec._709)


Unrelated question alert: is there an equivalent to this mailing list on the new forums : https://forums.developer.apple.com ?

Regards,

Vincent Olivier
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