i965: Skip _mesa_load_state_parameters when there are zero parameters.

Saves a tiny bit of CPU overhead.

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Acked-by: Eric Anholt <[email protected]>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_vs_surface_state.c b/src/mesa/drivers/dri/i965/brw_vs_surface_state.c
index 1cc96cf683f..4e18c7dce23 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_surface_state.c
@@ -59,11 +59,6 @@ brw_upload_pull_constants(struct brw_context *brw,
    int i;
    uint32_t surf_index = prog_data->binding_table.pull_constants_start;
 
-   /* Updates the ParamaterValues[i] pointers for all parameters of the
-    * basic type of PROGRAM_STATE_VAR.
-    */
-   _mesa_load_state_parameters(&brw->ctx, prog->Parameters);
-
    if (!prog_data->nr_pull_params) {
       if (stage_state->surf_offset[surf_index]) {
 	 stage_state->surf_offset[surf_index] = 0;
@@ -72,6 +67,11 @@ brw_upload_pull_constants(struct brw_context *brw,
       return;
    }
 
+   /* Updates the ParamaterValues[i] pointers for all parameters of the
+    * basic type of PROGRAM_STATE_VAR.
+    */
+   _mesa_load_state_parameters(&brw->ctx, prog->Parameters);
+
    /* CACHE_NEW_*_PROG | _NEW_PROGRAM_CONSTANTS */
    uint32_t size = prog_data->nr_pull_params * 4;
    drm_intel_bo *const_bo = NULL;