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 /* make sure max texture size works */
52 assert((TILE_SIZE
<< TEX_ADDR_BITS
) >= (1 << (SP_MAX_TEXTURE_2D_LEVELS
-1)));
54 tc
= CALLOC_STRUCT( softpipe_tex_tile_cache
);
57 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
58 tc
->entries
[pos
].addr
.bits
.invalid
= 1;
60 tc
->last_tile
= &tc
->entries
[0]; /* any tile */
67 sp_destroy_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
)
72 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
73 /*assert(tc->entries[pos].x < 0);*/
76 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->transfer
);
79 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->tex_trans
);
90 sp_tex_tile_cache_map_transfers(struct softpipe_tex_tile_cache
*tc
)
92 if (tc
->tex_trans
&& !tc
->tex_trans_map
)
93 tc
->tex_trans_map
= tc
->pipe
->transfer_map(tc
->pipe
, tc
->tex_trans
);
98 sp_tex_tile_cache_unmap_transfers(struct softpipe_tex_tile_cache
*tc
)
100 if (tc
->tex_trans_map
) {
101 tc
->pipe
->transfer_unmap(tc
->pipe
, tc
->tex_trans
);
102 tc
->tex_trans_map
= NULL
;
107 * Invalidate all cached tiles for the cached texture.
108 * Should be called when the texture is modified.
111 sp_tex_tile_cache_validate_texture(struct softpipe_tex_tile_cache
*tc
)
118 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
119 tc
->entries
[i
].addr
.bits
.invalid
= 1;
124 sp_tex_tile_is_compat_view(struct softpipe_tex_tile_cache
*tc
,
125 struct pipe_sampler_view
*view
)
129 return (tc
->texture
== view
->texture
&&
130 tc
->format
== view
->format
&&
131 tc
->swizzle_r
== view
->swizzle_r
&&
132 tc
->swizzle_g
== view
->swizzle_g
&&
133 tc
->swizzle_b
== view
->swizzle_b
&&
134 tc
->swizzle_a
== view
->swizzle_a
);
138 * Specify the sampler view to cache.
141 sp_tex_tile_cache_set_sampler_view(struct softpipe_tex_tile_cache
*tc
,
142 struct pipe_sampler_view
*view
)
144 struct pipe_resource
*texture
= view
? view
->texture
: NULL
;
147 assert(!tc
->transfer
);
149 if (!sp_tex_tile_is_compat_view(tc
, view
)) {
150 pipe_resource_reference(&tc
->texture
, texture
);
153 if (tc
->tex_trans_map
) {
154 tc
->pipe
->transfer_unmap(tc
->pipe
, tc
->tex_trans
);
155 tc
->tex_trans_map
= NULL
;
158 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->tex_trans
);
159 tc
->tex_trans
= NULL
;
163 tc
->swizzle_r
= view
->swizzle_r
;
164 tc
->swizzle_g
= view
->swizzle_g
;
165 tc
->swizzle_b
= view
->swizzle_b
;
166 tc
->swizzle_a
= view
->swizzle_a
;
167 tc
->format
= view
->format
;
170 /* mark as entries as invalid/empty */
171 /* XXX we should try to avoid this when the teximage hasn't changed */
172 for (i
= 0; i
< NUM_ENTRIES
; i
++) {
173 tc
->entries
[i
].addr
.bits
.invalid
= 1;
176 tc
->tex_face
= -1; /* any invalid value here */
184 * Flush the tile cache: write all dirty tiles back to the transfer.
185 * any tiles "flagged" as cleared will be "really" cleared.
188 sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache
*tc
)
193 /* caching a texture, mark all entries as empty */
194 for (pos
= 0; pos
< NUM_ENTRIES
; pos
++) {
195 tc
->entries
[pos
].addr
.bits
.invalid
= 1;
204 * Given the texture face, level, zslice, x and y values, compute
205 * the cache entry position/index where we'd hope to find the
206 * cached texture tile.
207 * This is basically a direct-map cache.
208 * XXX There's probably lots of ways in which we can improve this.
211 tex_cache_pos( union tex_tile_address addr
)
213 uint entry
= (addr
.bits
.x
+
217 addr
.bits
.level
* 7);
219 return entry
% NUM_ENTRIES
;
223 * Similar to sp_get_cached_tile() but for textures.
224 * Tiles are read-only and indexed with more params.
226 const struct softpipe_tex_cached_tile
*
227 sp_find_cached_tile_tex(struct softpipe_tex_tile_cache
*tc
,
228 union tex_tile_address addr
)
230 struct softpipe_tex_cached_tile
*tile
;
232 tile
= tc
->entries
+ tex_cache_pos( addr
);
234 if (addr
.value
!= tile
->addr
.value
) {
236 /* cache miss. Most misses are because we've invaldiated the
237 * texture cache previously -- most commonly on binding a new
238 * texture. Currently we effectively flush the cache on texture
242 _debug_printf("miss at %u: x=%d y=%d z=%d face=%d level=%d\n"
243 " tile %u: x=%d y=%d z=%d face=%d level=%d\n",
244 pos
, x
/TILE_SIZE
, y
/TILE_SIZE
, z
, face
, level
,
245 pos
, tile
->addr
.bits
.x
, tile
->addr
.bits
.y
, tile
->z
, tile
->face
, tile
->level
);
248 /* check if we need to get a new transfer */
249 if (!tc
->tex_trans
||
250 tc
->tex_face
!= addr
.bits
.face
||
251 tc
->tex_level
!= addr
.bits
.level
||
252 tc
->tex_z
!= addr
.bits
.z
) {
253 /* get new transfer (view into texture) */
254 unsigned width
, height
, layer
;
257 if (tc
->tex_trans_map
) {
258 tc
->pipe
->transfer_unmap(tc
->pipe
, tc
->tex_trans
);
259 tc
->tex_trans_map
= NULL
;
262 tc
->pipe
->transfer_destroy(tc
->pipe
, tc
->tex_trans
);
263 tc
->tex_trans
= NULL
;
266 width
= u_minify(tc
->texture
->width0
, addr
.bits
.level
);
267 if (tc
->texture
->target
== PIPE_TEXTURE_1D_ARRAY
) {
268 height
= tc
->texture
->array_size
;
272 height
= u_minify(tc
->texture
->height0
, addr
.bits
.level
);
273 layer
= addr
.bits
.face
+ addr
.bits
.z
;
277 pipe_get_transfer(tc
->pipe
, tc
->texture
,
280 PIPE_TRANSFER_READ
| PIPE_TRANSFER_UNSYNCHRONIZED
,
281 0, 0, width
, height
);
283 tc
->tex_trans_map
= tc
->pipe
->transfer_map(tc
->pipe
, tc
->tex_trans
);
285 tc
->tex_face
= addr
.bits
.face
;
286 tc
->tex_level
= addr
.bits
.level
;
287 tc
->tex_z
= addr
.bits
.z
;
290 /* Get tile from the transfer (view into texture), explicitly passing
293 pipe_get_tile_rgba_format(tc
->pipe
,
295 addr
.bits
.x
* TILE_SIZE
,
296 addr
.bits
.y
* TILE_SIZE
,
300 (float *) tile
->data
.color
);
305 tc
->last_tile
= tile
;