intel: If we're doing a depth clear with tris, do color with it.

This is a 10% win on the ever-important glxgears not-a-benchmark.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_clear.c b/src/mesa/drivers/dri/intel/intel_clear.c
index 921ec2dc33..98f7292f59 100644
--- a/src/mesa/drivers/dri/intel/intel_clear.c
+++ b/src/mesa/drivers/dri/intel/intel_clear.c
@@ -201,6 +201,14 @@ intelClear(GLcontext *ctx, GLbitfield mask)
          blit_mask |= BUFFER_BIT_DEPTH;
    }
 
+   /* If we're doing a tri pass for depth/stencil, include a likely color
+    * buffer with it.
+    */
+   if (mask & (BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL)) {
+      tri_mask |= blit_mask & BUFFER_BIT_BACK_LEFT;
+      blit_mask &= ~BUFFER_BIT_BACK_LEFT;
+   }
+
    /* SW fallback clearing */
    swrast_mask = mask & ~tri_mask & ~blit_mask;