Merge branch 'mesa_7_5_branch'

Conflicts:
	src/mesa/main/dlist.c
	src/mesa/vbo/vbo_save_api.c

1 files changed, 79 insertions, 33 deletions

diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
index 1eed27fe45..49f202daa1 100644
--- a/src/mesa/main/dlist.c
+++ b/src/mesa/main/dlist.c
@@ -960,6 +960,20 @@ save_BlendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha)
    }
 }
 
+static void invalidate_saved_current_state( GLcontext *ctx )
+{
+   GLint i;
+
+   for (i = 0; i < VERT_ATTRIB_MAX; i++)
+      ctx->ListState.ActiveAttribSize[i] = 0;
+
+   for (i = 0; i < MAT_ATTRIB_MAX; i++)
+      ctx->ListState.ActiveMaterialSize[i] = 0;
+
+   memset(&ctx->ListState.Current, 0, sizeof ctx->ListState.Current);
+
+   ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
+}
 
 void GLAPIENTRY
 _mesa_save_CallList(GLuint list)
@@ -973,9 +987,10 @@ _mesa_save_CallList(GLuint list)
       n[1].ui = list;
    }
 
-   /* After this, we don't know what begin/end state we're in:
+   /* After this, we don't know what state we're in.  Invalidate all
+    * cached information previously gathered:
     */
-   ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
+   invalidate_saved_current_state( ctx );
 
    if (ctx->ExecuteFlag) {
       _mesa_CallList(list);
@@ -1018,9 +1033,10 @@ _mesa_save_CallLists(GLsizei n, GLenum type, const GLvoid * lists)
       }
    }
 
-   /* After this, we don't know what begin/end state we're in:
+   /* After this, we don't know what state we're in.  Invalidate all
+    * cached information previously gathered:
     */
-   ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
+   invalidate_saved_current_state( ctx );
 
    if (ctx->ExecuteFlag) {
       CALL_CallLists(ctx->Exec, (n, type, lists));
@@ -3180,14 +3196,26 @@ save_ShadeModel(GLenum mode)
 {
    GET_CURRENT_CONTEXT(ctx);
    Node *n;
-   ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
+   ASSERT_OUTSIDE_SAVE_BEGIN_END(ctx);
+
+   if (ctx->ExecuteFlag) {
+      CALL_ShadeModel(ctx->Exec, (mode));
+   }
+
+   if (ctx->ListState.Current.ShadeModel == mode)
+      return;
+
+   SAVE_FLUSH_VERTICES(ctx);
+
+   /* Only save the value if we know the statechange will take effect:
+    */
+   if (ctx->Driver.CurrentSavePrimitive == PRIM_OUTSIDE_BEGIN_END)
+      ctx->ListState.Current.ShadeModel = mode;
+
    n = ALLOC_INSTRUCTION(ctx, OPCODE_SHADE_MODEL, 1);
    if (n) {
       n[1].e = mode;
    }
-   if (ctx->ExecuteFlag) {
-      CALL_ShadeModel(ctx->Exec, (mode));
-   }
 }
 
 
@@ -5149,14 +5177,21 @@ save_EdgeFlag(GLboolean x)
    save_Attr1fNV(VERT_ATTRIB_EDGEFLAG, x ? (GLfloat)1.0 : (GLfloat)0.0);
 }
 
+static INLINE GLboolean compare4fv( const GLfloat *a,
+                                    const GLfloat *b,
+                                    GLuint count )
+{
+   return memcmp( a, b, count * sizeof(GLfloat) ) == 0;
+}
+                              
+
 static void GLAPIENTRY
 save_Materialfv(GLenum face, GLenum pname, const GLfloat * param)
 {
    GET_CURRENT_CONTEXT(ctx);
    Node *n;
    int args, i;
-
-   SAVE_FLUSH_VERTICES(ctx);
+   GLuint bitmask;
 
    switch (face) {
    case GL_BACK:
@@ -5186,26 +5221,43 @@ save_Materialfv(GLenum face, GLenum pname, const GLfloat * param)
       _mesa_compile_error(ctx, GL_INVALID_ENUM, "material(pname)");
       return;
    }
-
-   n = ALLOC_INSTRUCTION(ctx, OPCODE_MATERIAL, 6);
-   if (n) {
-      n[1].e = face;
-      n[2].e = pname;
-      for (i = 0; i < args; i++)
-         n[3 + i].f = param[i];
+   
+   if (ctx->ExecuteFlag) {
+      CALL_Materialfv(ctx->Exec, (face, pname, param));
    }
 
-   {
-      GLuint bitmask = _mesa_material_bitmask(ctx, face, pname, ~0, NULL);
-      for (i = 0; i < MAT_ATTRIB_MAX; i++)
-         if (bitmask & (1 << i)) {
+   bitmask = _mesa_material_bitmask(ctx, face, pname, ~0, NULL);
+
+   /* Try to eliminate redundant statechanges.  Because it is legal to
+    * call glMaterial even inside begin/end calls, don't need to worry
+    * about ctx->Driver.CurrentSavePrimitive here.
+    */
+   for (i = 0; i < MAT_ATTRIB_MAX; i++) {
+      if (bitmask & (1 << i)) {
+         if (ctx->ListState.ActiveMaterialSize[i] == args &&
+             compare4fv(ctx->ListState.CurrentMaterial[i], param, args)) {
+            bitmask &= ~(1 << i);
+         }
+         else {
             ctx->ListState.ActiveMaterialSize[i] = args;
             COPY_SZ_4V(ctx->ListState.CurrentMaterial[i], args, param);
          }
+      }
    }
 
-   if (ctx->ExecuteFlag) {
-      CALL_Materialfv(ctx->Exec, (face, pname, param));
+   /* If this call has effect, return early:
+    */
+   if (bitmask == 0)
+      return;
+
+   SAVE_FLUSH_VERTICES(ctx);
+
+   n = ALLOC_INSTRUCTION(ctx, OPCODE_MATERIAL, 6);
+   if (n) {
+      n[1].e = face;
+      n[2].e = pname;
+      for (i = 0; i < args; i++)
+         n[3 + i].f = param[i];
    }
 }
 
@@ -6796,7 +6848,6 @@ void GLAPIENTRY
 _mesa_NewList(GLuint name, GLenum mode)
 {
    GET_CURRENT_CONTEXT(ctx);
-   GLint i;
 
    FLUSH_CURRENT(ctx, 0);       /* must be called before assert */
    ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -6824,20 +6875,15 @@ _mesa_NewList(GLuint name, GLenum mode)
    ctx->CompileFlag = GL_TRUE;
    ctx->ExecuteFlag = (mode == GL_COMPILE_AND_EXECUTE);
 
+   /* Reset acumulated list state:
+    */
+   invalidate_saved_current_state( ctx );
+
    /* Allocate new display list */
    ctx->ListState.CurrentList = make_list(name, BLOCK_SIZE);
    ctx->ListState.CurrentBlock = ctx->ListState.CurrentList->Head;
    ctx->ListState.CurrentPos = 0;
 
-   /* Reset acumulated list state:
-    */
-   for (i = 0; i < Elements(ctx->ListState.ActiveAttribSize); i++)
-      ctx->ListState.ActiveAttribSize[i] = 0;
-
-   for (i = 0; i < Elements(ctx->ListState.ActiveMaterialSize); i++)
-      ctx->ListState.ActiveMaterialSize[i] = 0;
-
-   ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;
    ctx->Driver.NewList(ctx, name, mode);
 
    ctx->CurrentDispatch = ctx->Save;