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 "util/u_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_texture.h"
41 #include "sp_tex_tile_cache.h"
45 struct softpipe_tex_tile_cache
*
46 sp_create_tex_tile_cache( struct pipe_context
*pipe
)
48 struct softpipe_tex_tile_cache
*tc
;
51 tc
= CALLOC_STRUCT( softpipe_tex_tile_cache
);
54 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
55 tc
->entries
[pos
].addr
.bits
.invalid
= 1;
57 tc
->last_tile
= &tc
->entries
[0]; /* any tile */
64 sp_destroy_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
)
69 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
70 /*assert(tc->entries[pos].x < 0);*/
73 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->transfer
);
76 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->tex_trans
);
87 sp_tex_tile_cache_map_transfers(struct softpipe_tex_tile_cache
*tc
)
89 if (tc
->tex_trans
&& !tc
->tex_trans_map
)
90 tc
->tex_trans_map
= tc
->pipe
->transfer_map(tc
->pipe
, tc
->tex_trans
);
95 sp_tex_tile_cache_unmap_transfers(struct softpipe_tex_tile_cache
*tc
)
97 if (tc
->tex_trans_map
) {
98 tc
->pipe
->transfer_unmap(tc
->pipe
, tc
->tex_trans
);
99 tc
->tex_trans_map
= NULL
;
104 * Invalidate all cached tiles for the cached texture.
105 * Should be called when the texture is modified.
108 sp_tex_tile_cache_validate_texture(struct softpipe_tex_tile_cache
*tc
)
115 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
116 tc
->entries
[i
].addr
.bits
.invalid
= 1;
121 sp_tex_tile_is_compat_view(struct softpipe_tex_tile_cache
*tc
,
122 struct pipe_sampler_view
*view
)
126 return (tc
->texture
== view
->texture
&&
127 tc
->format
== view
->format
&&
128 tc
->swizzle_r
== view
->swizzle_r
&&
129 tc
->swizzle_g
== view
->swizzle_g
&&
130 tc
->swizzle_b
== view
->swizzle_b
&&
131 tc
->swizzle_a
== view
->swizzle_a
);
135 * Specify the sampler view to cache.
138 sp_tex_tile_cache_set_sampler_view(struct softpipe_tex_tile_cache
*tc
,
139 struct pipe_sampler_view
*view
)
141 struct pipe_resource
*texture
= view
? view
->texture
: NULL
;
144 assert(!tc
->transfer
);
146 if (!sp_tex_tile_is_compat_view(tc
, view
)) {
147 pipe_resource_reference(&tc
->texture
, texture
);
150 if (tc
->tex_trans_map
) {
151 tc
->pipe
->transfer_unmap(tc
->pipe
, tc
->tex_trans
);
152 tc
->tex_trans_map
= NULL
;
155 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->tex_trans
);
156 tc
->tex_trans
= NULL
;
160 tc
->swizzle_r
= view
->swizzle_r
;
161 tc
->swizzle_g
= view
->swizzle_g
;
162 tc
->swizzle_b
= view
->swizzle_b
;
163 tc
->swizzle_a
= view
->swizzle_a
;
164 tc
->format
= view
->format
;
167 /* mark as entries as invalid/empty */
168 /* XXX we should try to avoid this when the teximage hasn't changed */
169 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
170 tc
->entries
[i
].addr
.bits
.invalid
= 1;
173 tc
->tex_face
= -1; /* any invalid value here */
181 * Flush the tile cache: write all dirty tiles back to the transfer.
182 * any tiles "flagged" as cleared will be "really" cleared.
185 sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
)
190 /* caching a texture, mark all entries as empty */
191 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
192 tc
->entries
[pos
].addr
.bits
.invalid
= 1;
201 * Given the texture face, level, zslice, x and y values, compute
202 * the cache entry position/index where we'd hope to find the
203 * cached texture tile.
204 * This is basically a direct-map cache.
205 * XXX There's probably lots of ways in which we can improve this.
208 tex_cache_pos( union tex_tile_address addr
)
210 uint entry
= (addr
.bits
.x
+
214 addr
.bits
.level
* 7);
216 return entry
% NUM_ENTRIES
;
220 * Similar to sp_get_cached_tile() but for textures.
221 * Tiles are read-only and indexed with more params.
223 const struct softpipe_tex_cached_tile
*
224 sp_find_cached_tile_tex(struct softpipe_tex_tile_cache
*tc
,
225 union tex_tile_address addr
)
227 struct softpipe_tex_cached_tile
*tile
;
229 tile
= tc
->entries
+ tex_cache_pos( addr
);
231 if (addr
.value
!= tile
->addr
.value
) {
233 /* cache miss. Most misses are because we've invaldiated the
234 * texture cache previously -- most commonly on binding a new
235 * texture. Currently we effectively flush the cache on texture
239 _debug_printf("miss at %u: x=%d y=%d z=%d face=%d level=%d\n"
240 " tile %u: x=%d y=%d z=%d face=%d level=%d\n",
241 pos
, x
/TILE_SIZE
, y
/TILE_SIZE
, z
, face
, level
,
242 pos
, tile
->addr
.bits
.x
, tile
->addr
.bits
.y
, tile
->z
, tile
->face
, tile
->level
);
245 /* check if we need to get a new transfer */
246 if (!tc
->tex_trans
||
247 tc
->tex_face
!= addr
.bits
.face
||
248 tc
->tex_level
!= addr
.bits
.level
||
249 tc
->tex_z
!= addr
.bits
.z
) {
250 /* get new transfer (view into texture) */
253 if (tc
->tex_trans_map
) {
254 tc
->pipe
->transfer_unmap(tc
->pipe
, tc
->tex_trans
);
255 tc
->tex_trans_map
= NULL
;
258 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->tex_trans
);
259 tc
->tex_trans
= NULL
;
263 pipe_get_transfer(tc
->pipe
, tc
->texture
,
267 PIPE_TRANSFER_READ
| PIPE_TRANSFER_UNSYNCHRONIZED
,
269 u_minify(tc
->texture
->width0
, addr
.bits
.level
),
270 u_minify(tc
->texture
->height0
, addr
.bits
.level
));
272 tc
->tex_trans_map
= tc
->pipe
->transfer_map(tc
->pipe
, tc
->tex_trans
);
274 tc
->tex_face
= addr
.bits
.face
;
275 tc
->tex_level
= addr
.bits
.level
;
276 tc
->tex_z
= addr
.bits
.z
;
279 /* get tile from the transfer (view into texture) */
280 pipe_get_tile_swizzle(tc
->pipe
,
282 addr
.bits
.x
* TILE_SIZE
,
283 addr
.bits
.y
* TILE_SIZE
,
291 (float *) tile
->data
.color
);
295 tc
->last_tile
= tile
;