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 "cso_cache/cso_cache.h"
  40 #include "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       cso->delete_state = (cso_state_callback)st->pipe->delete_blend_state;
  67       cso->context = st->pipe;
  68       iter = cso_insert_state(st->cache, hash_key, CSO_BLEND, cso);
  69    }
  70    return ((struct cso_blend *)cso_hash_iter_data(iter));
  71 }
  72
  73 const struct cso_sampler *
  74 st_cached_sampler_state(struct st_context *st,
  75                         const struct pipe_sampler_state *templ)
  76 {
  77    unsigned hash_key = cso_construct_key((void*)templ, sizeof(struct pipe_sampler_state));
  78    struct cso_hash_iter iter = cso_find_state_template(st->cache,
  79                                                        hash_key, CSO_SAMPLER,
  80                                                        (void*)templ);
  81    if (cso_hash_iter_is_null(iter)) {
  82       struct cso_sampler *cso = malloc(sizeof(struct cso_sampler));
  83       memcpy(&cso->state, templ, sizeof(struct pipe_sampler_state));
  84       cso->data = st->pipe->create_sampler_state(st->pipe, &cso->state);
  85       if (!cso->data)
  86          cso->data = &cso->state;
  87       cso->delete_state = (cso_state_callback)st->pipe->delete_sampler_state;
  88       cso->context = st->pipe;
  89       iter = cso_insert_state(st->cache, hash_key, CSO_SAMPLER, cso);
  90    }
  91    return (struct cso_sampler*)(cso_hash_iter_data(iter));
  92 }
  93
  94 const struct cso_depth_stencil_alpha *
  95 st_cached_depth_stencil_alpha_state(struct st_context *st,
  96                               const struct pipe_depth_stencil_alpha_state *templ)
  97 {
  98    unsigned hash_key = cso_construct_key((void*)templ,
  99                                          sizeof(struct pipe_depth_stencil_alpha_state));
 100    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 101                                                        hash_key,
 102                                                        CSO_DEPTH_STENCIL_ALPHA,
 103                                                        (void*)templ);
 104    if (cso_hash_iter_is_null(iter)) {
 105       struct cso_depth_stencil_alpha *cso = malloc(sizeof(struct cso_depth_stencil_alpha));
 106       memcpy(&cso->state, templ, sizeof(struct pipe_depth_stencil_alpha_state));
 107       cso->data = st->pipe->create_depth_stencil_alpha_state(st->pipe, &cso->state);
 108       if (!cso->data)
 109          cso->data = &cso->state;
 110       cso->delete_state = (cso_state_callback)st->pipe->delete_depth_stencil_alpha_state;
 111       cso->context = st->pipe;
 112       iter = cso_insert_state(st->cache, hash_key, CSO_DEPTH_STENCIL_ALPHA, cso);
 113    }
 114    return (struct cso_depth_stencil_alpha*)(cso_hash_iter_data(iter));
 115 }
 116
 117 const struct cso_rasterizer* st_cached_rasterizer_state(
 118    struct st_context *st,
 119    const struct pipe_rasterizer_state *templ)
 120 {
 121    unsigned hash_key = cso_construct_key((void*)templ,
 122                                          sizeof(struct pipe_rasterizer_state));
 123    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 124                                                        hash_key, CSO_RASTERIZER,
 125                                                        (void*)templ);
 126    if (cso_hash_iter_is_null(iter)) {
 127       struct cso_rasterizer *cso = malloc(sizeof(struct cso_rasterizer));
 128       memcpy(&cso->state, templ, sizeof(struct pipe_rasterizer_state));
 129       cso->data = st->pipe->create_rasterizer_state(st->pipe, &cso->state);
 130       if (!cso->data)
 131          cso->data = &cso->state;
 132       cso->delete_state = (cso_state_callback)st->pipe->delete_rasterizer_state;
 133       cso->context = st->pipe;
 134       iter = cso_insert_state(st->cache, hash_key, CSO_RASTERIZER, cso);
 135    }
 136    return (struct cso_rasterizer*)(cso_hash_iter_data(iter));
 137 }
 138
 139 const struct cso_fragment_shader *
 140 st_cached_fs_state(struct st_context *st,
 141                    const struct pipe_shader_state *templ)
 142 {
 143    unsigned hash_key = cso_construct_key((void*)templ,
 144                                          sizeof(struct pipe_shader_state));
 145    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 146                                                        hash_key, CSO_FRAGMENT_SHADER,
 147                                                        (void*)templ);
 148    if (cso_hash_iter_is_null(iter)) {
 149       struct cso_fragment_shader *cso = malloc(sizeof(struct cso_fragment_shader));
 150       memcpy(&cso->state, templ, sizeof(struct pipe_shader_state));
 151       cso->data = st->pipe->create_fs_state(st->pipe, &cso->state);
 152       if (!cso->data)
 153          cso->data = &cso->state;
 154       cso->delete_state = (cso_state_callback)st->pipe->delete_fs_state;
 155       cso->context = st->pipe;
 156       iter = cso_insert_state(st->cache, hash_key, CSO_FRAGMENT_SHADER, cso);
 157    }
 158    return (struct cso_fragment_shader*)(cso_hash_iter_data(iter));
 159 }
 160
 161 const struct cso_vertex_shader *
 162 st_cached_vs_state(struct st_context *st,
 163                    const struct pipe_shader_state *templ)
 164 {
 165    unsigned hash_key = cso_construct_key((void*)templ,
 166                                          sizeof(struct pipe_shader_state));
 167    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 168                                                        hash_key, CSO_VERTEX_SHADER,
 169                                                        (void*)templ);
 170    if (cso_hash_iter_is_null(iter)) {
 171       struct cso_vertex_shader *cso = malloc(sizeof(struct cso_vertex_shader));
 172       memcpy(&cso->state, templ, sizeof(struct pipe_shader_state));
 173       cso->data = st->pipe->create_vs_state(st->pipe, &cso->state);
 174       if (!cso->data)
 175          cso->data = &cso->state;
 176       cso->delete_state = (cso_state_callback)st->pipe->delete_vs_state;
 177       cso->context = st->pipe;
 178       iter = cso_insert_state(st->cache, hash_key, CSO_VERTEX_SHADER, cso);
 179    }
 180    return (struct cso_vertex_shader*)(cso_hash_iter_data(iter));
 181 }