src/mesa/state_tracker/st_cache.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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  /*
  29   * Authors:
  30   *   Zack Rusin <zack@tungstengraphics.com>
  31   */
  32
  33 #include "st_cache.h"
  34
  35 #include "st_context.h"
  36
  37 #include "pipe/p_state.h"
  38
  39 #include "pipe/cso_cache/cso_cache.h"
  40 #include "pipe/cso_cache/cso_hash.h"
  41
  42
  43 /* Those function will either find the state of the given template
  44  * in the cache or they will create a new state from the given
  45  * template, insert it in the cache and return it.
  46  */
  47
  48 /*
  49  * If the driver returns 0 from the create method then they will assign
  50  * the data member of the cso to be the template itself.
  51  */
  52
  53 const struct cso_blend * st_cached_blend_state(struct st_context *st,
  54                                                const struct pipe_blend_state *templ)
  55 {
  56    unsigned hash_key = cso_construct_key((void*)templ, sizeof(struct pipe_blend_state));
  57    struct cso_hash_iter iter = cso_find_state_template(st->cache,
  58                                                        hash_key, CSO_BLEND,
  59                                                        (void*)templ);
  60    if (cso_hash_iter_is_null(iter)) {
  61       struct cso_blend *cso = malloc(sizeof(struct cso_blend));
  62       memcpy(&cso->state, templ, sizeof(struct pipe_blend_state));
  63       cso->data = st->pipe->create_blend_state(st->pipe, &cso->state);
  64       if (!cso->data)
  65          cso->data = &cso->state;
  66       iter = cso_insert_state(st->cache, hash_key, CSO_BLEND, cso);
  67    }
  68    return ((struct cso_blend *)cso_hash_iter_data(iter));
  69 }
  70
  71 const struct cso_sampler *
  72 st_cached_sampler_state(struct st_context *st,
  73                         const struct pipe_sampler_state *templ)
  74 {
  75    unsigned hash_key = cso_construct_key((void*)templ, sizeof(struct pipe_sampler_state));
  76    struct cso_hash_iter iter = cso_find_state_template(st->cache,
  77                                                        hash_key, CSO_SAMPLER,
  78                                                        (void*)templ);
  79    if (cso_hash_iter_is_null(iter)) {
  80       struct cso_sampler *cso = malloc(sizeof(struct cso_sampler));
  81       memcpy(&cso->state, templ, sizeof(struct pipe_sampler_state));
  82       cso->data = st->pipe->create_sampler_state(st->pipe, &cso->state);
  83       if (!cso->data)
  84          cso->data = &cso->state;
  85       iter = cso_insert_state(st->cache, hash_key, CSO_SAMPLER, cso);
  86    }
  87    return (struct cso_sampler*)(cso_hash_iter_data(iter));
  88 }
  89
  90 const struct cso_depth_stencil_alpha *
  91 st_cached_depth_stencil_alpha_state(struct st_context *st,
  92                               const struct pipe_depth_stencil_alpha_state *templ)
  93 {
  94    unsigned hash_key = cso_construct_key((void*)templ,
  95                                          sizeof(struct pipe_depth_stencil_alpha_state));
  96    struct cso_hash_iter iter = cso_find_state_template(st->cache,
  97                                                        hash_key,
  98                                                        CSO_DEPTH_STENCIL_ALPHA,
  99                                                        (void*)templ);
 100    if (cso_hash_iter_is_null(iter)) {
 101       struct cso_depth_stencil_alpha *cso = malloc(sizeof(struct cso_depth_stencil_alpha));
 102       memcpy(&cso->state, templ, sizeof(struct pipe_depth_stencil_alpha_state));
 103       cso->data = st->pipe->create_depth_stencil_alpha_state(st->pipe, &cso->state);
 104       if (!cso->data)
 105          cso->data = &cso->state;
 106       iter = cso_insert_state(st->cache, hash_key, CSO_DEPTH_STENCIL_ALPHA, cso);
 107    }
 108    return (struct cso_depth_stencil_alpha*)(cso_hash_iter_data(iter));
 109 }
 110
 111 const struct cso_rasterizer* st_cached_rasterizer_state(
 112    struct st_context *st,
 113    const struct pipe_rasterizer_state *templ)
 114 {
 115    unsigned hash_key = cso_construct_key((void*)templ,
 116                                          sizeof(struct pipe_rasterizer_state));
 117    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 118                                                        hash_key, CSO_RASTERIZER,
 119                                                        (void*)templ);
 120    if (cso_hash_iter_is_null(iter)) {
 121       struct cso_rasterizer *cso = malloc(sizeof(struct cso_rasterizer));
 122       memcpy(&cso->state, templ, sizeof(struct pipe_rasterizer_state));
 123       cso->data = st->pipe->create_rasterizer_state(st->pipe, &cso->state);
 124       if (!cso->data)
 125          cso->data = &cso->state;
 126       iter = cso_insert_state(st->cache, hash_key, CSO_RASTERIZER, cso);
 127    }
 128    return (struct cso_rasterizer*)(cso_hash_iter_data(iter));
 129 }
 130
 131 const struct cso_fragment_shader *
 132 st_cached_fs_state(struct st_context *st,
 133                    const struct pipe_shader_state *templ)
 134 {
 135    unsigned hash_key = cso_construct_key((void*)templ,
 136                                          sizeof(struct pipe_shader_state));
 137    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 138                                                        hash_key, CSO_FRAGMENT_SHADER,
 139                                                        (void*)templ);
 140    if (cso_hash_iter_is_null(iter)) {
 141       struct cso_fragment_shader *cso = malloc(sizeof(struct cso_fragment_shader));
 142       memcpy(&cso->state, templ, sizeof(struct pipe_shader_state));
 143       cso->data = st->pipe->create_fs_state(st->pipe, &cso->state);
 144       if (!cso->data)
 145          cso->data = &cso->state;
 146       iter = cso_insert_state(st->cache, hash_key, CSO_FRAGMENT_SHADER, cso);
 147    }
 148    return (struct cso_fragment_shader*)(cso_hash_iter_data(iter));
 149 }
 150
 151 const struct cso_vertex_shader *
 152 st_cached_vs_state(struct st_context *st,
 153                    const struct pipe_shader_state *templ)
 154 {
 155    unsigned hash_key = cso_construct_key((void*)templ,
 156                                          sizeof(struct pipe_shader_state));
 157    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 158                                                        hash_key, CSO_VERTEX_SHADER,
 159                                                        (void*)templ);
 160    if (cso_hash_iter_is_null(iter)) {
 161       struct cso_vertex_shader *cso = malloc(sizeof(struct cso_vertex_shader));
 162       memcpy(&cso->state, templ, sizeof(struct pipe_shader_state));
 163       cso->data = st->pipe->create_vs_state(st->pipe, &cso->state);
 164       if (!cso->data)
 165          cso->data = &cso->state;
 166       iter = cso_insert_state(st->cache, hash_key, CSO_VERTEX_SHADER, cso);
 167    }
 168    return (struct cso_vertex_shader*)(cso_hash_iter_data(iter));
 169 }
 170