mesa: Add BeginVertices driver call

Provides notification to the VBO modules prior to the first immediate call.
Pairs with FlushVertices()

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 7fb0a211d7..b1e006901b 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -947,6 +947,12 @@ 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