vbo: create a new draw function interface for indirect draws

All indirect draws are passed to the new draw function. By default
there's a fallback implementation which pipes it right back to
draw_prims, but eventually both the fallback and draw_prim's support for
indirect drawing should be removed.

This should allow a backend to properly support ARB_multi_draw_indirect
and ARB_indirect_parameters.

Signed-off-by: Ilia Mirkin <[email protected]>
Acked-by: Marek Olšák <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/vbo/vbo_context.h b/src/mesa/vbo/vbo_context.h
index 6293a8b9edc..11f9b17c7c4 100644
--- a/src/mesa/vbo/vbo_context.h
+++ b/src/mesa/vbo/vbo_context.h
@@ -76,6 +76,12 @@ struct vbo_context {
     * is responsible for initiating any fallback actions required:
     */
    vbo_draw_func draw_prims;
+
+   /* Optional callback for indirect draws. This allows multidraws to not be
+    * broken up, as well as for the actual count to be passed in as a separate
+    * indirect parameter.
+    */
+   vbo_indirect_draw_func draw_indirect_prims;
 };