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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * All Rights Reserved.
  5.  *
  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:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  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.
  25.  *
  26.  **************************************************************************/
  27.  
  28. #include "util/u_memory.h"
  29. #include "pipe/p_state.h"
  30. #include "translate.h"
  31. #include "translate_cache.h"
  32.  
  33. #include "cso_cache/cso_cache.h"
  34. #include "cso_cache/cso_hash.h"
  35.  
  36. struct translate_cache {
  37.    struct cso_hash *hash;
  38. };
  39.  
  40. struct translate_cache * translate_cache_create( void )
  41. {
  42.    struct translate_cache *cache = MALLOC_STRUCT(translate_cache);
  43.    if (cache == NULL) {
  44.       return NULL;
  45.    }
  46.  
  47.    cache->hash = cso_hash_create();
  48.    return cache;
  49. }
  50.  
  51.  
  52. static INLINE void delete_translates(struct translate_cache *cache)
  53. {
  54.    struct cso_hash *hash = cache->hash;
  55.    struct cso_hash_iter iter = cso_hash_first_node(hash);
  56.    while (!cso_hash_iter_is_null(iter)) {
  57.       struct translate *state = (struct translate*)cso_hash_iter_data(iter);
  58.       iter = cso_hash_iter_next(iter);
  59.       if (state) {
  60.          state->release(state);
  61.       }
  62.    }
  63. }
  64.  
  65. void translate_cache_destroy(struct translate_cache *cache)
  66. {
  67.    delete_translates(cache);
  68.    cso_hash_delete(cache->hash);
  69.    FREE(cache);
  70. }
  71.  
  72.  
  73. static INLINE unsigned translate_hash_key_size(struct translate_key *key)
  74. {
  75.    unsigned size = sizeof(struct translate_key) -
  76.                    sizeof(struct translate_element) * (PIPE_MAX_ATTRIBS - key->nr_elements);
  77.    return size;
  78. }
  79.  
  80. static INLINE unsigned create_key(struct translate_key *key)
  81. {
  82.    unsigned hash_key;
  83.    unsigned size = translate_hash_key_size(key);
  84.    /*debug_printf("key size = %d, (els = %d)\n",
  85.      size, key->nr_elements);*/
  86.    hash_key = cso_construct_key(key, size);
  87.    return hash_key;
  88. }
  89.  
  90. struct translate * translate_cache_find(struct translate_cache *cache,
  91.                                         struct translate_key *key)
  92. {
  93.    unsigned hash_key = create_key(key);
  94.    struct translate *translate = (struct translate*)
  95.       cso_hash_find_data_from_template(cache->hash,
  96.                                        hash_key,
  97.                                        key, sizeof(*key));
  98.  
  99.    if (!translate) {
  100.       /* create/insert */
  101.       translate = translate_create(key);
  102.       cso_hash_insert(cache->hash, hash_key, translate);
  103.    }
  104.  
  105.    return translate;
  106. }
  107.