Mesa (master): mesa: Add SYSTEM_VALUE_BASE_VERTEX

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: 1e87fbd78f15f262b3dd2cbc16099e9f484c42a0
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1e87fbd78f15f262b3dd2cbc16099e9f484c42a0

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Fri Jun 20 16:11:50 2014 -0700

mesa: Add SYSTEM_VALUE_BASE_VERTEX

This system value represents the basevertex value passed to
glDrawElementsBaseVertex and related functions.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Tapani Pälli <tapani.palli at intel.com>

---

 src/mesa/main/mtypes.h                     |   15 ++++++++++++++-
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp |    1 +
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 32e308a..05534db 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2084,7 +2084,12 @@ typedef enum
     * gl_VertexID gets basevertex added in.  This differs from DirectX where
     * SV_VertexID does \b not get basevertex added in.
     *
-    * \sa SYSTEM_VALUE_VERTEX_ID_ZERO_BASE
+    * \note
+    * If all system values are available, \c SYSTEM_VALUE_VERTEX_ID will be
+    * equal to \c SYSTEM_VALUE_VERTEX_ID_ZERO_BASE plus
+    * \c SYSTEM_VALUE_BASE_VERTEX.
+    *
+    * \sa SYSTEM_VALUE_VERTEX_ID_ZERO_BASE, SYSTEM_VALUE_BASE_VERTEX
     */
    SYSTEM_VALUE_VERTEX_ID,
 
@@ -2126,6 +2131,14 @@ typedef enum
     * \sa SYSTEM_VALUE_VERTEX_ID, SYSTEM_VALUE_BASE_VERTEX
     */
    SYSTEM_VALUE_VERTEX_ID_ZERO_BASE,
+
+   /**
+    * Value of \c basevertex passed to \c glDrawElementsBaseVertex and similar
+    * functions.
+    *
+    * \sa SYSTEM_VALUE_VERTEX_ID, SYSTEM_VALUE_VERTEX_ID_ZERO_BASE
+    */
+   SYSTEM_VALUE_BASE_VERTEX,
    /*@}*/
 
    /**
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 1835460..7c2f0fc 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -4168,6 +4168,7 @@ const unsigned _mesa_sysval_to_semantic[SYSTEM_VALUE_MAX] = {
    TGSI_SEMANTIC_VERTEXID,
    TGSI_SEMANTIC_INSTANCEID,
    0,
+   0,
 
    /* Geometry shader
     */