intel: tell libdrm whether we want a cpu-ready or gpu-ready BO for regions.

This lets us avoid allocing new buffers for renderbuffers, finalized miptrees,
and PBO-uploaded textures when there's an unreferenced but still active one
cached, while also avoiding CPU waits for batchbuffers and CPU-uploaded
textures.  The size of BOs allocated for a desktop running current GL
cairogears on i915 is cut in half with this.

Note that this means we require libdrm 2.4.5.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_regions.h b/src/mesa/drivers/dri/intel/intel_regions.h
index 4b120ba4cee..45e2bf4e77a 100644
--- a/src/mesa/drivers/dri/intel/intel_regions.h
+++ b/src/mesa/drivers/dri/intel/intel_regions.h
@@ -74,7 +74,8 @@ struct intel_region
  */
 struct intel_region *intel_region_alloc(struct intel_context *intel,
                                         GLuint cpp, GLuint width,
-                                        GLuint height, GLuint pitch);
+                                        GLuint height, GLuint pitch,
+					GLboolean expect_accelerated_upload);
 
 struct intel_region *
 intel_region_alloc_for_handle(struct intel_context *intel,