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_screen
*screen
)
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
)
66 struct pipe_screen
*screen
;
69 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
70 /*assert(tc->entries[pos].x < 0);*/
73 screen
= tc
->transfer
->texture
->screen
;
74 screen
->tex_transfer_destroy(tc
->transfer
);
77 screen
= tc
->tex_trans
->texture
->screen
;
78 screen
->tex_transfer_destroy(tc
->tex_trans
);
88 sp_tex_tile_cache_map_transfers(struct softpipe_tex_tile_cache
*tc
)
90 if (tc
->tex_trans
&& !tc
->tex_trans_map
)
91 tc
->tex_trans_map
= tc
->screen
->transfer_map(tc
->screen
, tc
->tex_trans
);
96 sp_tex_tile_cache_unmap_transfers(struct softpipe_tex_tile_cache
*tc
)
98 if (tc
->tex_trans_map
) {
99 tc
->screen
->transfer_unmap(tc
->screen
, tc
->tex_trans
);
100 tc
->tex_trans_map
= NULL
;
105 * Invalidate all cached tiles for the cached texture.
106 * Should be called when the texture is modified.
109 sp_tex_tile_cache_validate_texture(struct softpipe_tex_tile_cache
*tc
)
116 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
117 tc
->entries
[i
].addr
.bits
.invalid
= 1;
122 * Specify the sampler view to cache.
125 sp_tex_tile_cache_set_sampler_view(struct softpipe_tex_tile_cache
*tc
,
126 struct pipe_sampler_view
*view
)
128 struct pipe_texture
*texture
= view
? view
->texture
: NULL
;
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
;
149 tc
->swizzle_r
= view
->swizzle_r
;
150 tc
->swizzle_g
= view
->swizzle_g
;
151 tc
->swizzle_b
= view
->swizzle_b
;
152 tc
->swizzle_a
= view
->swizzle_a
;
153 tc
->format
= view
->format
;
156 /* mark as entries as invalid/empty */
157 /* XXX we should try to avoid this when the teximage hasn't changed */
158 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
159 tc
->entries
[i
].addr
.bits
.invalid
= 1;
162 tc
->tex_face
= -1; /* any invalid value here */
170 * Flush the tile cache: write all dirty tiles back to the transfer.
171 * any tiles "flagged" as cleared will be "really" cleared.
174 sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
)
179 /* caching a texture, mark all entries as empty */
180 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
181 tc
->entries
[pos
].addr
.bits
.invalid
= 1;
190 * Given the texture face, level, zslice, x and y values, compute
191 * the cache entry position/index where we'd hope to find the
192 * cached texture tile.
193 * This is basically a direct-map cache.
194 * XXX There's probably lots of ways in which we can improve this.
197 tex_cache_pos( union tex_tile_address addr
)
199 uint entry
= (addr
.bits
.x
+
203 addr
.bits
.level
* 7);
205 return entry
% NUM_ENTRIES
;
209 * Similar to sp_get_cached_tile() but for textures.
210 * Tiles are read-only and indexed with more params.
212 const struct softpipe_tex_cached_tile
*
213 sp_find_cached_tile_tex(struct softpipe_tex_tile_cache
*tc
,
214 union tex_tile_address addr
)
216 struct pipe_screen
*screen
= tc
->screen
;
217 struct softpipe_tex_cached_tile
*tile
;
219 tile
= tc
->entries
+ tex_cache_pos( addr
);
221 if (addr
.value
!= tile
->addr
.value
) {
223 /* cache miss. Most misses are because we've invaldiated the
224 * texture cache previously -- most commonly on binding a new
225 * texture. Currently we effectively flush the cache on texture
229 _debug_printf("miss at %u: x=%d y=%d z=%d face=%d level=%d\n"
230 " tile %u: x=%d y=%d z=%d face=%d level=%d\n",
231 pos
, x
/TILE_SIZE
, y
/TILE_SIZE
, z
, face
, level
,
232 pos
, tile
->addr
.bits
.x
, tile
->addr
.bits
.y
, tile
->z
, tile
->face
, tile
->level
);
235 /* check if we need to get a new transfer */
236 if (!tc
->tex_trans
||
237 tc
->tex_face
!= addr
.bits
.face
||
238 tc
->tex_level
!= addr
.bits
.level
||
239 tc
->tex_z
!= addr
.bits
.z
) {
240 /* get new transfer (view into texture) */
243 if (tc
->tex_trans_map
) {
244 tc
->screen
->transfer_unmap(tc
->screen
, tc
->tex_trans
);
245 tc
->tex_trans_map
= NULL
;
248 screen
->tex_transfer_destroy(tc
->tex_trans
);
249 tc
->tex_trans
= NULL
;
253 screen
->get_tex_transfer(screen
, tc
->texture
,
257 PIPE_TRANSFER_READ
, 0, 0,
258 u_minify(tc
->texture
->width0
, addr
.bits
.level
),
259 u_minify(tc
->texture
->height0
, addr
.bits
.level
));
261 tc
->tex_trans_map
= screen
->transfer_map(screen
, tc
->tex_trans
);
263 tc
->tex_face
= addr
.bits
.face
;
264 tc
->tex_level
= addr
.bits
.level
;
265 tc
->tex_z
= addr
.bits
.z
;
268 /* get tile from the transfer (view into texture) */
269 pipe_get_tile_swizzle(tc
->tex_trans
,
270 addr
.bits
.x
* TILE_SIZE
,
271 addr
.bits
.y
* TILE_SIZE
,
279 (float *) tile
->data
.color
);
283 tc
->last_tile
= tile
;