RadeonSI Gallium3D Driver Sees A Few Fixes

For those that don't closely follow the Mesa Git repository, there's finally a few more "RadeonSI" Gallium3D driver fixes that arrived this morning for slowly but surely bringing up the AMD Radeon HD 7000 series 3D support.

With no exciting commit messages, it doesn't sound like the RadeonSI Gallium3D driver is yet in a reasonable shape for end-users looking towards OpenGL acceleration on the open-source stack. While the HD 7000 series is nearly one year old, users are still best off running the AMD Catalyst binary blob for the near future as the 3D support is still problematic. The RadeonSI Gallium3D driver has been public since April.

They at least have had kernel mode-setting in the Radeon DRM driver working for a couple kernel releases now, but that's not too worthwhile if you are after actually after using your expensive high-end graphics card for real work.

- radeonsi: remove redundant parameter in r600_init_surface
- radeonsi: Use explicit stencil mipmap level offsets.
- radeonsi: correct texture memory size for Z32F_S8X24
- radeonsi: Depth/stencil fixes.
- radeonsi: Flesh out support for depth/stencil exports from the pixel shader.
- radeonsi: Fix sampler views for depth textures.
- radeonsi: Fix z/stencil texture creation.

The 2D acceleration support for the HD 7000 series is also dependent upon 3D/OpenGL since it's being piped over GLAMOR.

Hopefully by the time Mesa 9.1/10.0 rolls out in H1'2013 there will be good Radeon HD 7000 series support in place. At least for the AMD Radeon HD 8000 series the open-source enablement shouldn't take as long once the HD 7000 series is going since it's not as many changes between series as going from the HD 6000 to HD 7000 series that warranted a brand new driver.

The latest AMD RadeonSI commits can be viewed on CGit.