From: Nicolai Hähnle Date: Thu, 13 Apr 2017 20:13:55 +0000 (+0200) Subject: tgsi: clarify TGSI_SEMANTIC_{LAYER,VIEWPORT_INDEX} X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f3d2cf6c1ff6ccf16c2a471f8f05c4ed5a734ae4;p=mesa.git 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 Reviewed-by: Edward O'Callaghan --- 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 """"""""""""""""""""""