[Bug 39057] Support for Indexed Vertex Blending

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=39057

--- Comment #93 from Paul Gofman <gofmanp at gmail.com> ---
Created attachment 62605
  --> https://bugs.winehq.org/attachment.cgi?id=62605
Patchset for supporting SW shaders and indexed vertex blending (through glsl)

(In reply to Alexandr Oleynikov from comment #92)
> Seems like newer drivers for both NVidia (396 and higher) and AMD (AMDGPU)
> don't like registers that are this high:
> https://devtalk.nvidia.com/default/topic/1036629/linux/-quot-nvidia-396-
> gl_invalid_operation-error-generated-quot-when-compiling-1024-vertex-shaders/

I am attaching a rebased draft patch set from what I was testing a while ago,
which includes the following:
- Support for UBO instead of uniforms for shader constants;
- Support for software vertex shaders (through glsl backend);
- Support for indexed vertex blending (through glsl backend).

It should probably work with newer NVIDIA drivers (as it minds GL capabilties
for uniform arrays' sizes). I didn't test with the newest drivers though, some
bugs are possible. If it is still does not work as is for some reason, setting
HKEY_CURRENT_USER/Software/Wine/Direct3D/consts_ubo (DWORD value) to 1 in
registry might help.

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