tnl: Add a utility to emit indexed vertices to a DMA buffer.

This utility is useful for hardware that doesn't support HW index buffers.
It's a bit inefficient but appears to give a substantial performance gain,
as we can emit tri strips that would otherwise be split into triangles.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/tnl/t_vertex.h b/src/mesa/tnl/t_vertex.h
index 712311a146..16071fb695 100644
--- a/src/mesa/tnl/t_vertex.h
+++ b/src/mesa/tnl/t_vertex.h
@@ -118,6 +118,12 @@ extern void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
 					   GLuint start,
 					   GLuint end,
 					   void *dest );
+extern void *_tnl_emit_indexed_vertices_to_buffer( GLcontext *ctx,
+						   const GLuint *elts,
+						   GLuint start,
+						   GLuint end,
+						   void *dest );
+
 
 extern void _tnl_build_vertices( GLcontext *ctx,
 				 GLuint start,