1 files changed, 72 insertions, 16 deletions

diff --git a/src/gallium/drivers/softpipe/sp_tile_cache.h b/src/gallium/drivers/softpipe/sp_tile_cache.h
index 8f247d0e58..a80678e865 100644
--- a/src/gallium/drivers/softpipe/sp_tile_cache.h
+++ b/src/gallium/drivers/softpipe/sp_tile_cache.h
@@ -34,7 +34,6 @@
 #include "pipe/p_compiler.h"
 
 
-struct softpipe_context;
 struct softpipe_tile_cache;
 
 
@@ -44,11 +43,23 @@ struct softpipe_tile_cache;
 #define TILE_SIZE 64
 
 
+/* If we need to support > 4096, just expand this to be a 64 bit
+ * union, or consider tiling in Z as well.
+ */
+union tile_address {
+   struct {
+      unsigned x:6;             /* 4096 / TILE_SIZE */
+      unsigned y:6;             /* 4096 / TILE_SIZE */
+      unsigned invalid:1;
+      unsigned pad:19;
+   } bits;
+   unsigned value;
+};
+
 
 struct softpipe_cached_tile
 {
-   int x, y;           /**< pos of tile in window coords */
-   int z, face, level; /**< Extra texture indexes */
+   union tile_address addr;
    union {
       float color[TILE_SIZE][TILE_SIZE][4];
       uint color32[TILE_SIZE][TILE_SIZE];
@@ -59,6 +70,32 @@ struct softpipe_cached_tile
    } data;
 };
 
+#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 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 softpipe_cached_tile tile;  /**< scratch tile for clears */
+
+   struct softpipe_cached_tile *last_tile;  /**< most recently retrieved tile */
+};
+
 
 extern struct softpipe_tile_cache *
 sp_create_tile_cache( struct pipe_screen *screen );
@@ -80,26 +117,45 @@ extern void
 sp_tile_cache_unmap_transfers(struct softpipe_tile_cache *tc);
 
 extern void
-sp_tile_cache_set_texture(struct pipe_context *pipe,
-                          struct softpipe_tile_cache *tc,
-                          struct pipe_texture *texture);
-
-extern void
-sp_flush_tile_cache(struct softpipe_context *softpipe,
-                    struct softpipe_tile_cache *tc);
+sp_flush_tile_cache(struct softpipe_tile_cache *tc);
 
 extern void
 sp_tile_cache_clear(struct softpipe_tile_cache *tc, const float *rgba,
                     uint clearValue);
 
 extern struct softpipe_cached_tile *
-sp_get_cached_tile(struct softpipe_context *softpipe,
-                   struct softpipe_tile_cache *tc, int x, int y);
+sp_find_cached_tile(struct softpipe_tile_cache *tc, 
+                    union tile_address addr );
+
+
+static INLINE const union tile_address
+tile_address( unsigned x,
+              unsigned y )
+{
+   union tile_address addr;
+
+   addr.value = 0;
+   addr.bits.x = x / TILE_SIZE;
+   addr.bits.y = y / TILE_SIZE;
+      
+   return addr;
+}
+
+/* Quickly retrieve tile if it matches last lookup.
+ */
+static INLINE struct softpipe_cached_tile *
+sp_get_cached_tile(struct softpipe_tile_cache *tc, 
+                   int x, int y )
+{
+   union tile_address addr = tile_address( x, y );
+
+   if (tc->last_tile->addr.value == addr.value)
+      return tc->last_tile;
+
+   return sp_find_cached_tile( tc, addr );
+}
+
 
-extern const struct softpipe_cached_tile *
-sp_get_cached_tile_tex(struct softpipe_context *softpipe,
-                       struct softpipe_tile_cache *tc, int x, int y, int z,
-                       int face, int level);
 
 
 #endif /* SP_TILE_CACHE_H */