svga: mark the texture dirty for write transfer map only

Instead of unconditionally mark the texture subresource dirty at transfer map,
we'll set the dirty bit for write transfer only.

Tested with lightsmark2008 and glretrace.

Reviewed-by: Brian Paul <brianp@vmware.com>

diff --git a/src/gallium/drivers/svga/svga_resource_texture.c b/src/gallium/drivers/svga/svga_resource_texture.c
index ae5122843a6a48e1e6f97926dd4a65b663d83c37..f176647dcf6d8a4e97dbc0e1fe9496cf93f6248e 100644 (file)
--- a/src/gallium/drivers/svga/svga_resource_texture.c
+++ b/src/gallium/drivers/svga/svga_resource_texture.c
@@ -485,8 +485,10 @@ svga_texture_transfer_map(struct pipe_context *pipe,
             }
         }
       }
-      /* mark this texture level as dirty */
-      svga_set_texture_dirty(tex, st->slice, transfer->level);
+      if (transfer->usage & PIPE_TRANSFER_WRITE) {
+         /* mark this texture level as dirty */
+         svga_set_texture_dirty(tex, st->slice, transfer->level);
+      }
    }
 
    st->use_direct_map = use_direct_map;