r300g: dynamically ask for and release Hyper-Z access

We ask for Hyper-Z access when clearing a zbuffer.
We release it if no zbuffer clear has been done for 2 seconds.

1 files changed, 14 insertions, 2 deletions

diff --git a/src/gallium/winsys/radeon/drm/radeon_winsys.h b/src/gallium/winsys/radeon/drm/radeon_winsys.h
index ca0e6624138..3a64e4abc35 100644
--- a/src/gallium/winsys/radeon/drm/radeon_winsys.h
+++ b/src/gallium/winsys/radeon/drm/radeon_winsys.h
@@ -87,9 +87,11 @@ enum radeon_value_id {
      * - TBD
      */
     RADEON_VID_DRM_2_8_0,
+};
 
-    RADEON_VID_CAN_HYPERZ,     /* ZMask + HiZ */
-    RADEON_VID_CAN_AACOMPRESS, /* CMask */
+enum radeon_feature_id {
+    RADEON_FID_HYPERZ_RAM_ACCESS,     /* ZMask + HiZ */
+    RADEON_FID_CMASK_RAM_ACCESS,
 };
 
 struct radeon_winsys {
@@ -314,6 +316,16 @@ struct radeon_winsys {
      */
     boolean (*cs_is_buffer_referenced)(struct radeon_winsys_cs *cs,
                                        struct radeon_winsys_cs_handle *buf);
+
+    /**
+     * Request access to a feature for a command stream.
+     *
+     * \param cs        A command stream.
+     * \param fid       A winsys buffer.
+     */
+    boolean (*cs_request_feature)(struct radeon_winsys_cs *cs,
+                                  enum radeon_feature_id fid,
+                                  boolean enable);
 };
 
 #endif