i965: Skip recalculating URB allocations if the entry size didn't change.

We only get here if the VS/GS compiled programs change, but we can even
skip it if the VS/GS size didn't change.

Affects cairo runtime on glamor by -1.26471% +/- 0.674335% (n=234)

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 45d72d2ced4..eb37e750f6d 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1169,6 +1169,7 @@ struct brw_context
     */
    struct {
       GLuint vsize;		/* vertex size plus header in urb registers */
+      GLuint gsize;	        /* GS output size in urb registers */
       GLuint csize;		/* constant buffer size in urb registers */
       GLuint sfsize;		/* setup data size in urb registers */
 
@@ -1191,10 +1192,10 @@ struct brw_context
       GLuint cs_start;
       GLuint size; /* Hardware URB size, in KB. */
 
-      /* gen6: True if the most recently sent _3DSTATE_URB message allocated
+      /* True if the most recently sent _3DSTATE_URB message allocated
        * URB space for the GS.
        */
-      bool gen6_gs_previously_active;
+      bool gs_present;
    } urb;