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- more handling of some very broken old ATI drivers.

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This commit is contained in:
Christoph Oelckers 2017-05-19 21:33:48 +02:00
parent e1cd0dc588
commit a4231ffd00
1 changed files with 10 additions and 0 deletions
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10
src/gl/system/gl_interface.cpp
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@ -213,6 +213,16 @@ void gl_LoadExtensions()
gl.glslversion = 0;
gl.flags |= RFL_NO_CLIP_PLANES;
}
else if (gl.glslversion < 1.4f && !CheckExtension("GL_ARB_uniform_buffer_object"))
{
// Some old ATI drivers report OpenGL 3.1 with GLSL version 1.3 and no support for uniform buffers.
// We have no choice but to force them down to OpenGL 2.x.
gl.legacyMode = true;
gl.lightmethod = LM_LEGACY;
gl.buffermethod = BM_LEGACY;
gl.glslversion = 0;
gl.flags |= RFL_NO_CLIP_PLANES;
}
else
{
gl.legacyMode = false;