[Mesa-dev] [PATCH 0/4] gallium: add support for retrieving number of texture samples

[Ilia Mirkin]

My hope was (as you can see in the last patch) to enable this for all
drivers that support MS textures. I've got nv50/nvc0/r600g covered.

RadeonSI will have to read the data from the texture descriptor. I'm
totally unfamiliar with LLVM, the descriptor format, etc. Hopefully
someone will be able to write an appropriate patch.

SVGA seems to support ms textures, but I didn't see anything in its
virtual ISA that would fit. VMWare folk -- is this going to be easy to
add? Or do I need to add a new PIPE_CAP?

Ilia Mirkin (4):
  tgsi: add a TXQS opcode to retrieve the number of texture samples
  nv50/ir: add support for TXQS tgsi opcode
  r600g: add support for TXQS tgsi opcode
  st/mesa: emit TXQS, support ARB_shader_texture_image_samples

 src/gallium/auxiliary/tgsi/tgsi_info.c                |  3 ++-
 src/gallium/docs/source/tgsi.rst                      | 12 +++++++++++-
 .../drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp     | 17 ++++++++++++-----
 .../drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp | 19 +++++++++++++++++++
 .../drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp |  2 ++
 src/gallium/drivers/r600/r600_shader.c                | 16 ++++++++++++----
 src/gallium/include/pipe/p_shader_tokens.h            |  1 +
 src/mesa/state_tracker/st_extensions.c                |  1 +
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp            |  6 +++++-
 9 files changed, 65 insertions(+), 12 deletions(-)

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2.4.6