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authorIlia Mirkin <[email protected]>2015-09-14 16:23:04 -0400
committerIlia Mirkin <[email protected]>2015-11-12 17:58:23 -0500
commite3d9dbe3046c4fd10c6b4c66d8016e908ea7c140 (patch)
tree447ddd78a7f4d668f4b37d1198fc15620115e15f /src/gallium/docs/source/tgsi.rst
parent20748318c5b870fc27f699637041e67a67321f5f (diff)
gallium: add support for gl_HelperInvocation semantic
Signed-off-by: Ilia Mirkin <[email protected]> Reviewed-by: Glenn Kennard <[email protected]>
Diffstat (limited to 'src/gallium/docs/source/tgsi.rst')
-rw-r--r--src/gallium/docs/source/tgsi.rst8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 01e18f3084e..e7b0c2f6377 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -2941,6 +2941,14 @@ TGSI_SEMANTIC_VERTICESIN
For tessellation evaluation/control shaders, this semantic label indicates the
number of vertices provided in the input patch. Only the X value is defined.
+TGSI_SEMANTIC_HELPER_INVOCATION
+"""""""""""""""""""""""""""""""
+
+For fragment shaders, this semantic indicates whether the current
+invocation is covered or not. Helper invocations are created in order
+to properly compute derivatives, however it may be desirable to skip
+some of the logic in those cases. See ``gl_HelperInvocation`` documentation.
+
Declaration Interpolate
^^^^^^^^^^^^^^^^^^^^^^^