+#define NUM_ENTRIES 50
+
+
+/** XXX move these */
+#define MAX_WIDTH 2048
+#define MAX_HEIGHT 2048
+
+
+struct softpipe_tile_cache
+{
+ struct pipe_screen *screen;
+ struct pipe_surface *surface; /**< the surface we're caching */
+ struct pipe_transfer *transfer;
+ void *transfer_map;
+
+ struct pipe_texture *texture; /**< if caching a texture */
+ unsigned timestamp;
+
+ struct softpipe_cached_tile entries[NUM_ENTRIES];
+ uint clear_flags[(MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32];
+ float clear_color[4]; /**< for color bufs */
+ uint clear_val; /**< for z+stencil, or packed color clear value */
+ boolean depth_stencil; /**< Is the surface a depth/stencil format? */
+
+ struct pipe_transfer *tex_trans;
+ void *tex_trans_map;
+ int tex_face, tex_level, tex_z;
+
+ struct softpipe_cached_tile tile; /**< scratch tile for clears */
+
+ struct softpipe_cached_tile *last_tile; /**< most recently retrieved tile */
+};
+