On 09/11/2015 07:26 AM, Roland Scheidegger wrote:
Am 11.09.2015 um 05:15 schrieb 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?
Note the d3d equivalent (sample_info) is d3d10.1 and svga3d opcodes only
cover d3d10, so yes this isn't doable. So I guess for the time being,
either a cap bit or emulation (stick it into a uniform) should be done,
though Brian probably knows better.
Yeah, we could emulate it with and extra constant, but I don't think
I'll have time to look at it for a while. Can we use a new CAP for now?
-Brian
Roland
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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