[Mesa-dev] [PATCH 1/4] gallium: add baseinstance/drawid semantics

[Ilia Mirkin]

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
---
 src/gallium/docs/source/tgsi.rst           | 13 +++++++++++++
 src/gallium/include/pipe/p_shader_tokens.h |  4 +++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index acd8f75..f69998f 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -2955,6 +2955,19 @@ 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.
 
+TGSI_SEMANTIC_BASEINSTANCE
+""""""""""""""""""""""""""
+
+For vertex shaders, the base instance argument supplied for this
+draw. This is an integer value, and only the X component is used.
+
+TGSI_SEMANTIC_DRAWID
+""""""""""""""""""""
+
+For vertex shaders, the zero-based index of the current draw in a
+``glMultiDraw*`` invocation. This is an integer value, and only the X
+component is used.
+
 
 Declaration Interpolate
 ^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h
index a3137ae..e8f4ad2 100644
--- a/src/gallium/include/pipe/p_shader_tokens.h
+++ b/src/gallium/include/pipe/p_shader_tokens.h
@@ -186,7 +186,9 @@ struct tgsi_declaration_interp
 #define TGSI_SEMANTIC_TESSINNER  33 /**< inner tessellation levels */
 #define TGSI_SEMANTIC_VERTICESIN 34 /**< number of input vertices */
 #define TGSI_SEMANTIC_HELPER_INVOCATION 35 /**< current invocation is helper */
-#define TGSI_SEMANTIC_COUNT      36 /**< number of semantic values */
+#define TGSI_SEMANTIC_BASEINSTANCE 36
+#define TGSI_SEMANTIC_DRAWID     37
+#define TGSI_SEMANTIC_COUNT      38 /**< number of semantic values */
 
 struct tgsi_declaration_semantic
 {
-- 
2.4.10