From: Brian Paul Date: Fri, 9 Jun 2017 13:45:02 +0000 (-0600) Subject: tgsi: clarify TGSI_SEMANTIC_SAMPLEMASK documentation X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=81e15a5dea2e50135a83d249944e12537f6b152e;p=mesa.git tgsi: clarify TGSI_SEMANTIC_SAMPLEMASK documentation Reviewed-by: Marek Olšák --- diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index eceaa6d64f7..7fb963fde5a 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -3298,8 +3298,9 @@ TGSI_SEMANTIC_SAMPLEMASK """""""""""""""""""""""" For fragment shaders, this semantic label indicates that an output contains -the sample mask used to disable further sample processing -(i.e. gl_SampleMask). Only the X value is used, up to 32x MS. +the sample mask used to disable further sample processing. The output's +type is uint[4] but only the X component is used (i.e. gl_SampleMask[0]). +Each bit corresponds to one sample position (up to 32x MSAA is supported). TGSI_SEMANTIC_INVOCATIONID """"""""""""""""""""""""""