It isn't necessary to call FLUSH_VERTICES from bind_buffer_range,
because transform feedback buffers are not allowed to be changed when
transform feedback is active.
Thanks to Marek Olšák for pointing out this bug.
---
src/mesa/main/transformfeedback.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/src/mesa/main/transformfeedback.c
b/src/mesa/main/transformfeedback.c
index 824f66a..3305613 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -404,7 +404,11 @@ bind_buffer_range(struct gl_context *ctx, GLuint index,
{
struct gl_transform_feedback_object *obj =
ctx->TransformFeedback.CurrentObject;
- FLUSH_VERTICES(ctx, _NEW_TRANSFORM_FEEDBACK);
+
+ /* Note: no need to FLUSH_VERTICES or flag _NEW_TRANSFORM_FEEDBACK, because
+ * transform feedback buffers can't be changed while transform feedback is
+ * active.
+ */
/* The general binding point */
_mesa_reference_buffer_object(ctx,
--
1.7.6.4
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