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| author | Ilia Mirkin <imirkin@alum.mit.edu> | 2016-05-29 11:01:05 -0400 |
|---|---|---|
| committer | Ilia Mirkin <imirkin@alum.mit.edu> | 2016-06-06 20:49:28 -0400 |
| commit | 30684b50d71d4d5356b671293af4b9f3fd6161ff (patch) | |
| tree | 8cb3a0c87da9ba19e79d0ec02055c469fc3bce48 /src/gallium/docs | |
| parent | 5189f0243a3dd8698c645bbe762b8a1a3caaf1a9 (diff) | |
| download | external_mesa3d-30684b50d71d4d5356b671293af4b9f3fd6161ff.zip external_mesa3d-30684b50d71d4d5356b671293af4b9f3fd6161ff.tar.gz external_mesa3d-30684b50d71d4d5356b671293af4b9f3fd6161ff.tar.bz2 | |
gallium: add VOTE_* opcodes to implement GL_ARB_shader_group_vote
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'src/gallium/docs')
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index ab12490..bf09406 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -2557,6 +2557,23 @@ only be used with 32-bit integer image formats. resource[offset] = (dst_x > src_x ? dst_x : src_x) +.. _voteopcodes: + +Vote opcodes +^^^^^^^^^^^^ + +These opcodes compare the given value across the shader invocations +running in the current SIMD group. The details of exactly which +invocations get compared are implementation-defined, and it would be a +correct implementation to only ever consider the current thread's +value. (i.e. SIMD group of 1). The argument is treated as a boolean. + +.. opcode:: VOTE_ANY - Value is set in any of the current invocations + +.. opcode:: VOTE_ALL - Value is set in all of the current invocations + +.. opcode:: VOTE_EQ - Value is the same in all of the current invocations + Explanation of symbols used ------------------------------ |