r300g: do not tell st that a buffer is referenced by hw

It saves a few libdrm calls and unnecessary flushes.

3 files changed, 21 insertions, 7 deletions

diff --git a/src/gallium/winsys/radeon/drm/radeon_buffer.h b/src/gallium/winsys/radeon/drm/radeon_buffer.h
index 8782d675df..b48b6358e0 100644
--- a/src/gallium/winsys/radeon/drm/radeon_buffer.h
+++ b/src/gallium/winsys/radeon/drm/radeon_buffer.h
@@ -86,5 +86,6 @@ void radeon_drm_bufmgr_flush_maps(struct pb_manager *_mgr);
 boolean radeon_drm_bufmgr_get_handle(struct pb_buffer *_buf,
 				     struct winsys_handle *whandle);
 
-boolean radeon_drm_bufmgr_is_buffer_referenced(struct pb_buffer *_buf);
+boolean radeon_drm_bufmgr_is_buffer_referenced(struct pb_buffer *_buf,
+                                               enum r300_reference_domain domain);
 #endif
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_buffer.c b/src/gallium/winsys/radeon/drm/radeon_drm_buffer.c
index c9179a3620..9824ada5b3 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_buffer.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_buffer.c
@@ -381,13 +381,25 @@ void radeon_drm_bufmgr_write_reloc(struct pb_buffer *_buf,
     }
 }
 
-boolean radeon_drm_bufmgr_is_buffer_referenced(struct pb_buffer *_buf)
+boolean radeon_drm_bufmgr_is_buffer_referenced(struct pb_buffer *_buf,
+                                               enum r300_reference_domain domain)
 {
     struct radeon_drm_buffer *buf = get_drm_buffer(_buf);
-    uint32_t domain;
+    uint32_t tmp;
+
+    if (domain & R300_REF_CS) {
+        if (radeon_bo_is_referenced_by_cs(buf->bo, buf->mgr->rws->cs)) {
+            return TRUE;
+        }
+    }
+
+    if (domain & R300_REF_HW) {
+        if (radeon_bo_is_busy(buf->bo, &tmp)) {
+            return TRUE;
+        }
+    }
 
-    return (radeon_bo_is_referenced_by_cs(buf->bo, buf->mgr->rws->cs) ||
-	    radeon_bo_is_busy(buf->bo, &domain));
+    return FALSE;
 }
 
 
diff --git a/src/gallium/winsys/radeon/drm/radeon_r300.c b/src/gallium/winsys/radeon/drm/radeon_r300.c
index d1e65f87c3..2fcf7cf982 100644
--- a/src/gallium/winsys/radeon/drm/radeon_r300.c
+++ b/src/gallium/winsys/radeon/drm/radeon_r300.c
@@ -111,11 +111,12 @@ static void radeon_r300_winsys_buffer_reference(struct r300_winsys_screen *rws,
 }
 
 static boolean radeon_r300_winsys_is_buffer_referenced(struct r300_winsys_screen *rws,
-						       struct r300_winsys_buffer *buf)
+						       struct r300_winsys_buffer *buf,
+                                                       enum r300_reference_domain domain)
 {
     struct pb_buffer *_buf = radeon_pb_buffer(buf);
 
-    return radeon_drm_bufmgr_is_buffer_referenced(_buf);
+    return radeon_drm_bufmgr_is_buffer_referenced(_buf, domain);
 }
 
 static struct r300_winsys_buffer *radeon_r300_winsys_buffer_from_handle(struct r300_winsys_screen *rws,