RENDERER: Add OpenGL ES 1.1 support to opengl1 renderer#403
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mgerhardy wants to merge 2 commits into
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This is loosely based on the OpenPandora OpenGL ES port by ptitSeb. Some of the changes were backported from the opengl2 renderer. It runs faster, at least on modern hardware, and is requires for OpenGL ES support. r_primatives cvar values 1 and 3 still use glBegin as they have to use it by definition.
This requires my previous commit to use vertex arrays instead of glBegin() (loosey based on ptitSeb OpenPandora port). There isn't software gamma correction so overbright may not work (as is already the case for windowed mode on GNU/Linux). Enabling unsupported cvar settings (see README) automatically displays a warning and disables the cvar. r_useOpenGLES cvar controls whether OpenGL or OpenGL ES API is used (see README). It's not achived to avoid it being saved in mods, as there is no way to have a global cvar. --- Fix GLES converted image row padding Converting RGBA image to 2x2 RGB had wrong row alignment. Add image row padding support for 2x2 RGB and non-power of two images (not used by opengl1 renderer).
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Merged changes from ioquake/ioq3#375