Merge commit 'origin/gallium-0.1'

Conflicts:

	scons/gallium.py
	src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
	src/gallium/include/pipe/p_defines.h
	src/mesa/vbo/vbo_exec_api.c
	src/mesa/vbo/vbo_exec_draw.c

2 files changed, 38 insertions, 3 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 411b6a7b21f..a335f77479d 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -36,6 +36,22 @@
 struct gl_pixelstore_attrib;
 struct gl_display_list;
 
+#if FEATURE_ARB_vertex_buffer_object
+/* Modifies GL_MAP_UNSYNCHRONIZED_BIT to allow driver to fail (return
+ * NULL) if buffer is unavailable for immediate mapping.
+ *
+ * Does GL_MAP_INVALIDATE_RANGE_BIT do this?  It seems so, but it
+ * would require more book-keeping in the driver than seems necessary
+ * at this point.
+ *
+ * Does GL_MAP_INVALDIATE_BUFFER_BIT do this?  Not really -- we don't
+ * want to provoke the driver to throw away the old storage, we will
+ * respect the contents of already referenced data.
+ */
+#define MESA_MAP_NOWAIT_BIT       0x0040
+#endif
+
+
 /**
  * Device driver function table.
  * Core Mesa uses these function pointers to call into device drivers.
@@ -785,6 +801,16 @@ struct dd_function_table {
    void * (*MapBuffer)( GLcontext *ctx, GLenum target, GLenum access,
 			struct gl_buffer_object *obj );
 
+   /* May return NULL if MESA_MAP_NOWAIT_BIT is set in access:
+    */
+   void * (*MapBufferRange)( GLcontext *ctx, GLenum target,
+                             GLintptr offset, GLsizeiptr length, GLbitfield access,
+                             struct gl_buffer_object *obj);
+
+   void (*FlushMappedBufferRange) (GLcontext *ctx, GLenum target, 
+                                   GLintptr offset, GLsizeiptr length,
+                                   struct gl_buffer_object *obj);
+
    GLboolean (*UnmapBuffer)( GLcontext *ctx, GLenum target,
 			     struct gl_buffer_object *obj );
    /*@}*/
@@ -954,6 +980,12 @@ struct dd_function_table {
    GLuint NeedFlush;
    GLuint SaveNeedFlush;
 
+
+   /* Called prior to any of the GLvertexformat functions being
+    * called.  Paired with Driver.FlushVertices().
+    */
+   void (*BeginVertices)( GLcontext *ctx );
+
    /**
     * If inside glBegin()/glEnd(), it should ASSERT(0).  Otherwise, if
     * FLUSH_STORED_VERTICES bit in \p flags is set flushes any buffered
diff --git a/src/mesa/main/vtxfmt.c b/src/mesa/main/vtxfmt.c
index 0204979003e..1f807dc3dc3 100644
--- a/src/mesa/main/vtxfmt.c
+++ b/src/mesa/main/vtxfmt.c
@@ -54,9 +54,12 @@
    ASSERT( tnl->Current );						\
    ASSERT( tnl->SwapCount < NUM_VERTEX_FORMAT_ENTRIES );		\
    ASSERT( tmp_offset >= 0 );						\
-									\
-   /* Save the swapped function's dispatch entry so it can be */	\
-   /* restored later. */						\
+                                                                        \
+   if (tnl->SwapCount == 0)                                             \
+      ctx->Driver.BeginVertices( ctx );                                 \
+                                                                        \
+   /* Save the swapped function's dispatch entry so it can be */        \
+   /* restored later. */                                                \
    tnl->Swapped[tnl->SwapCount].location = & (((_glapi_proc *)ctx->Exec)[tmp_offset]); \
    tnl->Swapped[tnl->SwapCount].function = (_glapi_proc)TAG(FUNC);	\
    tnl->SwapCount++;							\