[965] Improve performance by allocating CURBE buffers a page at a time.

Since each one is only 64b, and kernel allocations are a page anyway, this
lets us reduce buffer allocation by packing many CURBEs into one buffer, for
each batchbuffer submitted.  Improves openarena performance by around 10%.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 9ddd41d3f3..7a2073d7c1 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -538,6 +538,10 @@ struct brw_context
       struct brw_tracked_state tracked_state;
 
       dri_bo *curbe_bo;
+      /** Offset within curbe_bo of space for current curbe entry */
+      GLuint curbe_offset;
+      /** Offset within curbe_bo of space for next curbe entry */
+      GLuint curbe_next_offset;
 
       GLfloat *last_buf;
       GLuint last_bufsz;