Recognize cards that expose GLSL 1.30 as DX10 capable even if they don't support EXT_GPU_SHADER4

[Stefan Dösinger]

Am 23.05.2014 um 00:23 schrieb Andrei Slăvoiu <andrei.slavoiu at gmail.com>:

> Mesa drivers do not expose EXT_GPU_SHADER4 as all functionality it offers is 
> already part of OpenGL 3.0. This causes all cards that are not explicitly 
> recognized by wine (for example all GCN cards) to be treated as DX9 cards and 
> presented to Windows apps as Radeon 9500.
The problem is that without GL_EXT_gpu_shader4 or GL_ARB_shader_texture_lod we cannot handle the texldd instruction. Right now we cannot use core contexts, so unless the driver exposes one of those extensions in compatibility contexts we are stuck on a shader model 2 feature level :-( .

The level detection your patch changes isn't directly related to this, as the shader model version support is controlled differently. But a Radeon 9500 matches a card with shader model 2 support much better than a Radeon R9.

Does this driver / gpu combination support GL_ARB_shader_texture_lod?

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