Tile cache functions.

1 files changed, 70 insertions, 0 deletions

diff --git a/src/mesa/pipe/softpipe/sp_tile_cache.h b/src/mesa/pipe/softpipe/sp_tile_cache.h
new file mode 100644
index 0000000000..4248361f99
--- /dev/null
+++ b/src/mesa/pipe/softpipe/sp_tile_cache.h
@@ -0,0 +1,70 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+#ifndef SP_TILE_CACHE_H
+#define SP_TILE_CACHE_H
+
+
+#include "p_compiler.h"
+
+
+struct softpipe_context;
+struct softpipe_tile_cache;
+
+
+#define TILE_SIZE 64
+
+
+
+struct softpipe_cached_tile
+{
+   int x, y;         /** pos of tile in window coords */
+   union {
+      float color[TILE_SIZE][TILE_SIZE][4];
+      uint depth[TILE_SIZE][TILE_SIZE];
+   } data;
+};
+
+
+extern struct softpipe_tile_cache *
+sp_create_tile_cache(void);
+
+extern void
+sp_destroy_tile_cache(struct softpipe_tile_cache *tc);
+
+extern void
+sp_flush_tile_cache(struct softpipe_surface *sps);
+
+extern void
+sp_clear_tile_cache(struct softpipe_surface *sps, unsigned clearval);
+
+extern struct softpipe_cached_tile *
+sp_get_cached_tile(struct softpipe_surface *sps, int x, int y);
+
+
+#endif /* SP_TILE_CACHE_H */
+