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| author | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-04-13 22:13:55 +0200 |
|---|---|---|
| committer | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-04-14 22:50:06 +0200 |
| commit | f3d2cf6c1ff6ccf16c2a471f8f05c4ed5a734ae4 (patch) | |
| tree | 1a4ed32a45e578cfcdc5f282a01dd5d562b2ce82 | |
| parent | 17f24a9b752fa3f7a412ca05ae7029d142785e59 (diff) | |
tgsi: clarify TGSI_SEMANTIC_{LAYER,VIEWPORT_INDEX}
Depending on pipe caps they can be writable in all vertex processing
stages, but only the output of the last stage counts.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 89acb521ced..e740476ff09 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -3212,6 +3212,11 @@ For geometry shaders, this semantic label indicates that an output contains the index of the viewport (and scissor) to use. This is an integer value, and only the X component is used. +If PIPE_CAP_TGSI_VS_LAYER_VIEWPORT or PIPE_CAP_TGSI_TES_LAYER_VIEWPORT is +supported, then this semantic label can also be used in vertex or +tessellation evaluation shaders, respectively. Only the value written in the +last vertex processing stage is used. + TGSI_SEMANTIC_LAYER """"""""""""""""""" @@ -3221,6 +3226,11 @@ contains the layer value to use for the color and depth/stencil surfaces. This is an integer value, and only the X component is used. (Also known as rendertarget array index.) +If PIPE_CAP_TGSI_VS_LAYER_VIEWPORT or PIPE_CAP_TGSI_TES_LAYER_VIEWPORT is +supported, then this semantic label can also be used in vertex or +tessellation evaluation shaders, respectively. Only the value written in the +last vertex processing stage is used. + TGSI_SEMANTIC_CULLDIST """""""""""""""""""""" |