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author | marha <marha@users.sourceforge.net> | 2010-11-22 19:42:40 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2010-11-22 19:42:40 +0000 |
commit | 85ef9930f56bf15181f9a0b238f03d55303cf411 (patch) | |
tree | 63b43286956ebd1c35c96e9b3d5305aabdf71a0f /mesalib/src/mesa/shader/prog_cache.c | |
parent | 94810d19989336862251dbf69c3f3acb18a9b06d (diff) | |
download | vcxsrv-85ef9930f56bf15181f9a0b238f03d55303cf411.tar.gz vcxsrv-85ef9930f56bf15181f9a0b238f03d55303cf411.tar.bz2 vcxsrv-85ef9930f56bf15181f9a0b238f03d55303cf411.zip |
Updated to mesalib 7.9
Diffstat (limited to 'mesalib/src/mesa/shader/prog_cache.c')
-rw-r--r-- | mesalib/src/mesa/shader/prog_cache.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/mesalib/src/mesa/shader/prog_cache.c b/mesalib/src/mesa/shader/prog_cache.c deleted file mode 100644 index e5b602fc0..000000000 --- a/mesalib/src/mesa/shader/prog_cache.c +++ /dev/null @@ -1,206 +0,0 @@ -/************************************************************************** - * - * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sub license, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. - * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR - * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, - * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE - * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - **************************************************************************/ - - -#include "main/glheader.h" -#include "main/mtypes.h" -#include "main/imports.h" -#include "shader/prog_cache.h" -#include "shader/program.h" - - -struct cache_item -{ - GLuint hash; - void *key; - struct gl_program *program; - struct cache_item *next; -}; - -struct gl_program_cache -{ - struct cache_item **items; - struct cache_item *last; - GLuint size, n_items; -}; - - - -/** - * Compute hash index from state key. - */ -static GLuint -hash_key(const void *key, GLuint key_size) -{ - const GLuint *ikey = (const GLuint *) key; - GLuint hash = 0, i; - - assert(key_size >= 4); - - /* Make a slightly better attempt at a hash function: - */ - for (i = 0; i < key_size / sizeof(*ikey); i++) - { - hash += ikey[i]; - hash += (hash << 10); - hash ^= (hash >> 6); - } - - return hash; -} - - -/** - * Rebuild/expand the hash table to accomodate more entries - */ -static void -rehash(struct gl_program_cache *cache) -{ - struct cache_item **items; - struct cache_item *c, *next; - GLuint size, i; - - cache->last = NULL; - - size = cache->size * 3; - items = (struct cache_item**) malloc(size * sizeof(*items)); - memset(items, 0, size * sizeof(*items)); - - for (i = 0; i < cache->size; i++) - for (c = cache->items[i]; c; c = next) { - next = c->next; - c->next = items[c->hash % size]; - items[c->hash % size] = c; - } - - free(cache->items); - cache->items = items; - cache->size = size; -} - - -static void -clear_cache(GLcontext *ctx, struct gl_program_cache *cache) -{ - struct cache_item *c, *next; - GLuint i; - - cache->last = NULL; - - for (i = 0; i < cache->size; i++) { - for (c = cache->items[i]; c; c = next) { - next = c->next; - free(c->key); - _mesa_reference_program(ctx, &c->program, NULL); - free(c); - } - cache->items[i] = NULL; - } - - - cache->n_items = 0; -} - - - -struct gl_program_cache * -_mesa_new_program_cache(void) -{ - struct gl_program_cache *cache = CALLOC_STRUCT(gl_program_cache); - if (cache) { - cache->size = 17; - cache->items = (struct cache_item **) - calloc(1, cache->size * sizeof(struct cache_item)); - if (!cache->items) { - free(cache); - return NULL; - } - } - return cache; -} - - -void -_mesa_delete_program_cache(GLcontext *ctx, struct gl_program_cache *cache) -{ - clear_cache(ctx, cache); - free(cache->items); - free(cache); -} - - -struct gl_program * -_mesa_search_program_cache(struct gl_program_cache *cache, - const void *key, GLuint keysize) -{ - if (cache->last && - memcmp(cache->last->key, key, keysize) == 0) { - return cache->last->program; - } - else { - const GLuint hash = hash_key(key, keysize); - struct cache_item *c; - - for (c = cache->items[hash % cache->size]; c; c = c->next) { - if (c->hash == hash && memcmp(c->key, key, keysize) == 0) { - cache->last = c; - return c->program; - } - } - - return NULL; - } -} - - -void -_mesa_program_cache_insert(GLcontext *ctx, - struct gl_program_cache *cache, - const void *key, GLuint keysize, - struct gl_program *program) -{ - const GLuint hash = hash_key(key, keysize); - struct cache_item *c = CALLOC_STRUCT(cache_item); - - c->hash = hash; - - c->key = malloc(keysize); - memcpy(c->key, key, keysize); - - c->program = program; /* no refcount change */ - - if (cache->n_items > cache->size * 1.5) { - if (cache->size < 1000) - rehash(cache); - else - clear_cache(ctx, cache); - } - - cache->n_items++; - c->next = cache->items[hash % cache->size]; - cache->items[hash % cache->size] = c; -} |