Rewritten R600g NIR Backend Merged For Mesa 22.2 - Improves Radeon HD 5000/6000 Series

[ozeszty]

gerddie thanks for pushing my 7670m (Thames, though mesa recognises it as Turks) up to OpenGL 4.5! Max compat profile is still limited to 3.1. Trying out the previous NIR backend, on this laptop, would fail even on `glxinfo`.
Does NIR make supporting OpenGL ES 3.2 (GL_KHR_blend_equation_advanced) or remaining 4.6 extensions easier/possible?

[gerddie]

gerddie thanks for pushing my 7670m (Thames, though mesa recognises it as Turks) up to OpenGL 4.5! Max compat profile is still limited to 3.1. Trying out the previous NIR backend, on this laptop, would fail even on `glxinfo`.
Does NIR make supporting OpenGL ES 3.2 (GL_KHR_blend_equation_advanced) or remaining 4.6 extensions easier/possible?

GL_KHR_blend_equation_advanced is more then just shader stuff, it needs correct setup of the resources, and I haven't looked into this at all. Regarding compat profiles, I'm currently looking into this. I'm not sure yet, but it may be that correct handling of gl_ClipVertex is the only thing that's missing (it was with virgl).

[smitty3268]

gerddie - any plan to eventually remove SB, or is that doing things beyond the scope of the NIR backend?

[ozeszty]

GL_KHR_blend_equation_advanced is more then just shader stuff, it needs correct setup of the resources, and I haven't looked into this at all. Regarding compat profiles, I'm currently looking into this. I'm not sure yet, but it may be that correct handling of gl_ClipVertex is the only thing that's missing (it was with virgl).

Thanks, I'll try to do some more testing.

[gerddie]

gerddie - any plan to eventually remove SB, or is that doing things beyond the scope of the NIR backend?

It would certainly be a nice-to-have.

[ozeszty]

GL_KHR_blend_equation_advanced is more then just shader stuff, it needs correct setup of the resources, and I haven't looked into this at all. Regarding compat profiles, I'm currently looking into this. I'm not sure yet, but it may be that correct handling of gl_ClipVertex is the only thing that's missing (it was with virgl).

OpenGL renderer string: AMD TURKS
OpenGL core profile version string: 4.5 (Core Profile) Mesa 22.2.0-devel
OpenGL version string: 4.5 (Compatibility Profile) Mesa 22.2.0-devel
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 22.2.0-devel