[Openicc] incomplete sRGB texture in OpenGL

Kai-Uwe Behrmann ku.b at gmx.de
Mon Oct 1 01:08:47 PDT 2012


The OpenGL EXT_texture_sRGB specification [1] is based on the sRGB 
specification [2]. Especially it reuses the gamma part of sRGB. 
Without touching the techical side of EXT_texture_sRGB, it's naming causes 
lots of irritation to developers. They think spontaneously OpenGL provides 
full colour management support as defined in sRGB through the 
EXT_texture_sRGB [3]. But that is plain wrong. EXT_texture_sRGB is purely 
about gamma correction.

So did someone already blame the OpenGL spec authors, that they use
the sRGB term without providing sRGB. I would like to subscribe or start a 
bug report or something else. OpenGL behaves in regard to sRGB like 
selling bread without previously baking or adding salt and water.

kind regards
Kai-Uwe Behrmann
-- 
developing for colour management 
www.behrmann.name + www.oyranos.org + IRC:oy

[1] http://www.opengl.org/registry/specs/EXT/texture_sRGB.txt
[2] http://en.wikipedia.org/wiki/SRGB
     http://www.w3.org/Graphics/Color/sRGB
[3] http://www.opengl.org/wiki/Image_Format#sRGB_colorspace


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