[Mesa-dev] [PATCH] u_vbuf: fix vb slot assignment for translated buffers

[Nicolai Hähnle]

Vertex attributes of different categories (constant/per-instance/
per-vertex) go into different buffers for translation, and this is now
properly reflected in the vertex buffers passed to the driver.

Fixes e.g. piglit's point-vertex-id divisor test.
---
 src/gallium/auxiliary/util/u_vbuf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gallium/auxiliary/util/u_vbuf.c b/src/gallium/auxiliary/util/u_vbuf.c
index 3d2193c..b31ada1 100644
--- a/src/gallium/auxiliary/util/u_vbuf.c
+++ b/src/gallium/auxiliary/util/u_vbuf.c
@@ -544,6 +544,7 @@ u_vbuf_translate_find_free_vb_slots(struct u_vbuf *mgr,
 
          index = ffs(unused_vb_mask) - 1;
          fallback_vbs[type] = index;
+         unused_vb_mask &= ~(1 << index);
          /*printf("found slot=%i for type=%i\n", index, type);*/
       }
    }
-- 
2.1.4