mesa: exec/dlist functions for glProvokingVertexEXT()

4 files changed, 77 insertions, 9 deletions

diff --git a/src/mesa/main/api_exec.c b/src/mesa/main/api_exec.c
index 6f66ff47a08..8627fafa3b5 100644
--- a/src/mesa/main/api_exec.c
+++ b/src/mesa/main/api_exec.c
@@ -641,6 +641,8 @@ _mesa_init_exec_table(struct _glapi_table *exec)
    /* ???. GL_EXT_depth_bounds_test */
    SET_DepthBoundsEXT(exec, _mesa_DepthBoundsEXT);
 
+   SET_ProvokingVertexEXT(exec, _mesa_ProvokingVertexEXT);
+
    /* ARB 1. GL_ARB_multitexture */
 #if _HAVE_FULL_GL
    SET_ActiveTextureARB(exec, _mesa_ActiveTextureARB);
diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
index dd73a1906b8..016c8481e91 100644
--- a/src/mesa/main/dlist.c
+++ b/src/mesa/main/dlist.c
@@ -352,6 +352,9 @@ typedef enum
    OPCODE_EVAL_P1,
    OPCODE_EVAL_P2,
 
+   /* GL_EXT_provoking_vertex */
+   OPCODE_PROVOKING_VERTEX,
+
    /* The following three are meta instructions */
    OPCODE_ERROR,                /* raise compiled-in error */
    OPCODE_CONTINUE,
@@ -5705,6 +5708,25 @@ save_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
 #endif
 
 
+/** GL_EXT_provoking_vertex */
+static void GLAPIENTRY
+save_ProvokingVertexEXT(GLenum mode)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   Node *n;
+   ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
+   n = ALLOC_INSTRUCTION(ctx, OPCODE_PROVOKING_VERTEX, 1);
+   if (n) {
+      n[1].e = mode;
+   }
+   if (ctx->ExecuteFlag) {
+      /*CALL_ProvokingVertexEXT(ctx->Exec, (mode));*/
+      _mesa_ProvokingVertexEXT(mode);
+   }
+}
+
+
+
 /**
  * Save an error-generating command into display list.
  *
@@ -6269,6 +6291,9 @@ execute_list(GLcontext *ctx, GLuint list)
          case OPCODE_SHADE_MODEL:
             CALL_ShadeModel(ctx->Exec, (n[1].e));
             break;
+         case OPCODE_PROVOKING_VERTEX:
+            CALL_ProvokingVertexEXT(ctx->Exec, (n[1].e));
+            break;
          case OPCODE_STENCIL_FUNC:
             CALL_StencilFunc(ctx->Exec, (n[1].e, n[2].i, n[3].ui));
             break;
@@ -8238,6 +8263,9 @@ _mesa_init_dlist_table(struct _glapi_table *table)
    SET_ProgramEnvParameters4fvEXT(table, save_ProgramEnvParameters4fvEXT);
    SET_ProgramLocalParameters4fvEXT(table, save_ProgramLocalParameters4fvEXT);
 #endif
+
+   /* 364. GL_EXT_provoking_vertex */
+   SET_ProvokingVertexEXT(table, save_ProvokingVertexEXT);
 }
 
 
@@ -8474,6 +8502,11 @@ print_list(GLcontext *ctx, GLuint list)
             _mesa_printf("EVAL_P2 %d %d\n", n[1].i, n[2].i);
             break;
 
+         case OPCODE_PROVOKING_VERTEX:
+            _mesa_printf("ProvokingVertex %s\n",
+                         _mesa_lookup_enum_by_nr(n[1].ui));
+            break;
+
             /*
              * meta opcodes/commands
              */
diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c
index ac604fd12cc..0f0d831feef 100644
--- a/src/mesa/main/light.c
+++ b/src/mesa/main/light.c
@@ -1,8 +1,9 @@
 /*
  * Mesa 3-D graphics library
- * Version:  7.0
+ * Version:  7.5
  *
- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -64,6 +65,37 @@ _mesa_ShadeModel( GLenum mode )
 
 
 /**
+ * Set the provoking vertex (the vertex which specifies the prim's
+ * color when flat shading) to either the first or last vertex of the
+ * triangle or line.
+ */
+void GLAPIENTRY
+_mesa_ProvokingVertexEXT(GLenum mode)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glProvokingVertexEXT 0x%x\n", mode);
+
+   switch (mode) {
+   case GL_FIRST_VERTEX_CONVENTION_EXT:
+   case GL_LAST_VERTEX_CONVENTION_EXT:
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glProvokingVertexEXT(0x%x)", mode);
+      return;
+   }
+
+   if (ctx->Light.ProvokingVertex == mode)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_LIGHT);
+   ctx->Light.ProvokingVertex = mode;
+}
+
+
+/**
  * Helper function called by _mesa_Lightfv and _mesa_PopAttrib to set
  * per-light state.
  * For GL_POSITION and GL_SPOT_DIRECTION the params position/direction
@@ -1348,6 +1380,7 @@ _mesa_init_lighting( GLcontext *ctx )
    init_lightmodel( &ctx->Light.Model );
    init_material( &ctx->Light.Material );
    ctx->Light.ShadeModel = GL_SMOOTH;
+   ctx->Light.ProvokingVertex = GL_LAST_VERTEX_CONVENTION_EXT;
    ctx->Light.Enabled = GL_FALSE;
    ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK;
    ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE;
diff --git a/src/mesa/main/light.h b/src/mesa/main/light.h
index b97e17b5be4..9c1a5eefadd 100644
--- a/src/mesa/main/light.h
+++ b/src/mesa/main/light.h
@@ -1,13 +1,9 @@
-/**
- * \file light.h
- * Lighting.
- */
-
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  7.5
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -37,6 +33,10 @@
 extern void GLAPIENTRY
 _mesa_ShadeModel( GLenum mode );
 
+extern void GLAPIENTRY
+_mesa_ProvokingVertexEXT(GLenum mode);
+
+
 #if _HAVE_FULL_GL
 extern void GLAPIENTRY
 _mesa_ColorMaterial( GLenum face, GLenum mode );