1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 * Texture tile caching.
35 #include "pipe/p_inlines.h"
36 #include "util/u_memory.h"
37 #include "util/u_tile.h"
38 #include "util/u_math.h"
39 #include "sp_context.h"
40 #include "sp_surface.h"
41 #include "sp_texture.h"
42 #include "sp_tex_tile_cache.h"
46 struct softpipe_tex_tile_cache
*
47 sp_create_tex_tile_cache( struct pipe_screen
*screen
)
49 struct softpipe_tex_tile_cache
*tc
;
52 tc
= CALLOC_STRUCT( softpipe_tex_tile_cache
);
55 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
56 tc
->entries
[pos
].addr
.bits
.invalid
= 1;
58 tc
->last_tile
= &tc
->entries
[0]; /* any tile */
65 sp_destroy_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
)
67 struct pipe_screen
*screen
;
70 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
71 /*assert(tc->entries[pos].x < 0);*/
74 screen
= tc
->transfer
->texture
->screen
;
75 screen
->tex_transfer_destroy(tc
->transfer
);
78 screen
= tc
->tex_trans
->texture
->screen
;
79 screen
->tex_transfer_destroy(tc
->tex_trans
);
89 sp_tex_tile_cache_map_transfers(struct softpipe_tex_tile_cache
*tc
)
91 if (tc
->tex_trans
&& !tc
->tex_trans_map
)
92 tc
->tex_trans_map
= tc
->screen
->transfer_map(tc
->screen
, tc
->tex_trans
);
97 sp_tex_tile_cache_unmap_transfers(struct softpipe_tex_tile_cache
*tc
)
99 if (tc
->tex_trans_map
) {
100 tc
->screen
->transfer_unmap(tc
->screen
, tc
->tex_trans
);
101 tc
->tex_trans_map
= NULL
;
106 * Invalidate all cached tiles for the cached texture.
107 * Should be called when the texture is modified.
110 sp_tex_tile_cache_validate_texture(struct softpipe_tex_tile_cache
*tc
)
117 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
118 tc
->entries
[i
].addr
.bits
.invalid
= 1;
123 * Specify the texture to cache.
126 sp_tex_tile_cache_set_texture(struct softpipe_tex_tile_cache
*tc
,
127 struct pipe_texture
*texture
)
131 assert(!tc
->transfer
);
133 if (tc
->texture
!= texture
) {
134 pipe_texture_reference(&tc
->texture
, texture
);
137 struct pipe_screen
*screen
= tc
->tex_trans
->texture
->screen
;
139 if (tc
->tex_trans_map
) {
140 screen
->transfer_unmap(screen
, tc
->tex_trans
);
141 tc
->tex_trans_map
= NULL
;
144 screen
->tex_transfer_destroy(tc
->tex_trans
);
145 tc
->tex_trans
= NULL
;
148 /* mark as entries as invalid/empty */
149 /* XXX we should try to avoid this when the teximage hasn't changed */
150 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
151 tc
->entries
[i
].addr
.bits
.invalid
= 1;
154 tc
->tex_face
= -1; /* any invalid value here */
162 * Flush the tile cache: write all dirty tiles back to the transfer.
163 * any tiles "flagged" as cleared will be "really" cleared.
166 sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
)
171 /* caching a texture, mark all entries as empty */
172 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
173 tc
->entries
[pos
].addr
.bits
.invalid
= 1;
182 * Given the texture face, level, zslice, x and y values, compute
183 * the cache entry position/index where we'd hope to find the
184 * cached texture tile.
185 * This is basically a direct-map cache.
186 * XXX There's probably lots of ways in which we can improve this.
189 tex_cache_pos( union tex_tile_address addr
)
191 uint entry
= (addr
.bits
.x
+
195 addr
.bits
.level
* 7);
197 return entry
% NUM_ENTRIES
;
201 * Similar to sp_get_cached_tile() but for textures.
202 * Tiles are read-only and indexed with more params.
204 const struct softpipe_tex_cached_tile
*
205 sp_find_cached_tile_tex(struct softpipe_tex_tile_cache
*tc
,
206 union tex_tile_address addr
)
208 struct pipe_screen
*screen
= tc
->screen
;
209 struct softpipe_tex_cached_tile
*tile
;
211 tile
= tc
->entries
+ tex_cache_pos( addr
);
213 if (addr
.value
!= tile
->addr
.value
) {
215 /* cache miss. Most misses are because we've invaldiated the
216 * texture cache previously -- most commonly on binding a new
217 * texture. Currently we effectively flush the cache on texture
221 _debug_printf("miss at %u: x=%d y=%d z=%d face=%d level=%d\n"
222 " tile %u: x=%d y=%d z=%d face=%d level=%d\n",
223 pos
, x
/TILE_SIZE
, y
/TILE_SIZE
, z
, face
, level
,
224 pos
, tile
->addr
.bits
.x
, tile
->addr
.bits
.y
, tile
->z
, tile
->face
, tile
->level
);
227 /* check if we need to get a new transfer */
228 if (!tc
->tex_trans
||
229 tc
->tex_face
!= addr
.bits
.face
||
230 tc
->tex_level
!= addr
.bits
.level
||
231 tc
->tex_z
!= addr
.bits
.z
) {
232 /* get new transfer (view into texture) */
235 if (tc
->tex_trans_map
) {
236 tc
->screen
->transfer_unmap(tc
->screen
, tc
->tex_trans
);
237 tc
->tex_trans_map
= NULL
;
240 screen
->tex_transfer_destroy(tc
->tex_trans
);
241 tc
->tex_trans
= NULL
;
245 screen
->get_tex_transfer(screen
, tc
->texture
,
249 PIPE_TRANSFER_READ
, 0, 0,
250 u_minify(tc
->texture
->width0
, addr
.bits
.level
),
251 u_minify(tc
->texture
->height0
, addr
.bits
.level
));
253 tc
->tex_trans_map
= screen
->transfer_map(screen
, tc
->tex_trans
);
255 tc
->tex_face
= addr
.bits
.face
;
256 tc
->tex_level
= addr
.bits
.level
;
257 tc
->tex_z
= addr
.bits
.z
;
260 /* get tile from the transfer (view into texture) */
261 pipe_get_tile_rgba(tc
->tex_trans
,
262 addr
.bits
.x
* TILE_SIZE
,
263 addr
.bits
.y
* TILE_SIZE
,
264 TILE_SIZE
, TILE_SIZE
,
265 (float *) tile
->data
.color
);
269 tc
->last_tile
= tile
;