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 /* This function will either find the state of the given template
  43  * in the cache or it will create a new state state from the given
  44  * template, will insert it in the cache and return it.
  45  */
  46 const struct cso_blend * st_cached_blend_state(struct st_context *st,
  47                                                const struct pipe_blend_state *templ)
  48 {
  49    unsigned hash_key = cso_construct_key((void*)templ, sizeof(struct pipe_blend_state));
  50    struct cso_hash_iter iter = cso_find_state_template(st->cache,
  51                                                        hash_key, CSO_BLEND,
  52                                                        (void*)templ);
  53    if (cso_hash_iter_is_null(iter)) {
  54       struct cso_blend *cso = malloc(sizeof(struct cso_blend));
  55       memcpy(&cso->state, templ, sizeof(struct pipe_blend_state));
  56       cso->data = st->pipe->create_blend_state(st->pipe, templ);
  57       if (!cso->data)
  58          cso->data = &cso->state;
  59       iter = cso_insert_state(st->cache, hash_key, CSO_BLEND, cso);
  60    }
  61    return ((struct cso_blend *)cso_hash_iter_data(iter));
  62 }
  63
  64 struct pipe_sampler_state * st_cached_sampler_state(
  65    struct st_context *st,
  66    const struct pipe_sampler_state *sampler)
  67 {
  68    unsigned hash_key = cso_construct_key((void*)sampler, sizeof(struct pipe_sampler_state));
  69    struct cso_hash_iter iter = cso_find_state_template(st->cache,
  70                                                        hash_key, CSO_SAMPLER,
  71                                                        (void*)sampler);
  72    if (cso_hash_iter_is_null(iter)) {
  73       const struct pipe_sampler_state *created_state = st->pipe->create_sampler_state(
  74          st->pipe, sampler);
  75       iter = cso_insert_state(st->cache, hash_key, CSO_SAMPLER,
  76                               (void*)created_state);
  77    }
  78    return (struct pipe_sampler_state*)(cso_hash_iter_data(iter));
  79 }
  80
  81 struct pipe_depth_stencil_state * st_cached_depth_stencil_state(
  82    struct st_context *st,
  83    const struct pipe_depth_stencil_state *depth_stencil)
  84 {
  85    unsigned hash_key = cso_construct_key((void*)depth_stencil, sizeof(struct pipe_depth_stencil_state));
  86    struct cso_hash_iter iter = cso_find_state_template(st->cache,
  87                                                        hash_key, CSO_DEPTH_STENCIL,
  88                                                        (void*)depth_stencil);
  89    if (cso_hash_iter_is_null(iter)) {
  90       const struct pipe_depth_stencil_state *created_state = st->pipe->create_depth_stencil_state(
  91          st->pipe, depth_stencil);
  92       iter = cso_insert_state(st->cache, hash_key, CSO_DEPTH_STENCIL,
  93                               (void*)created_state);
  94    }
  95    return (struct pipe_depth_stencil_state*)(cso_hash_iter_data(iter));
  96 }
  97
  98 const struct cso_rasterizer* st_cached_rasterizer_state(
  99    struct st_context *st,
 100    const struct pipe_rasterizer_state *templ)
 101 {
 102    unsigned hash_key = cso_construct_key((void*)templ,
 103                                          sizeof(struct pipe_rasterizer_state));
 104    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 105                                                        hash_key, CSO_RASTERIZER,
 106                                                        (void*)templ);
 107    if (cso_hash_iter_is_null(iter)) {
 108       struct cso_rasterizer *cso = malloc(sizeof(struct cso_rasterizer));
 109       memcpy(&cso->state, templ, sizeof(struct pipe_rasterizer_state));
 110       cso->data = st->pipe->create_rasterizer_state(st->pipe, templ);
 111       if (!cso->data)
 112          cso->data = &cso->state;
 113       iter = cso_insert_state(st->cache, hash_key, CSO_RASTERIZER, cso);
 114    }
 115    return (struct cso_rasterizer*)(cso_hash_iter_data(iter));
 116 }
 117
 118 const struct cso_fragment_shader *
 119 st_cached_fs_state(struct st_context *st,
 120                    const struct pipe_shader_state *templ)
 121 {
 122    unsigned hash_key = cso_construct_key((void*)templ,
 123                                          sizeof(struct pipe_shader_state));
 124    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 125                                                        hash_key, CSO_FRAGMENT_SHADER,
 126                                                        (void*)templ);
 127    if (cso_hash_iter_is_null(iter)) {
 128       struct cso_fragment_shader *cso = malloc(sizeof(struct cso_fragment_shader));
 129       memcpy(&cso->state, templ, sizeof(struct pipe_shader_state));
 130       cso->data = st->pipe->create_fs_state(st->pipe, templ);
 131       if (!cso->data)
 132          cso->data = &cso->state;
 133       iter = cso_insert_state(st->cache, hash_key, CSO_FRAGMENT_SHADER, cso);
 134    }
 135    return (struct cso_fragment_shader*)(cso_hash_iter_data(iter));
 136 }
 137
 138 const struct cso_vertex_shader *
 139 st_cached_vs_state(struct st_context *st,
 140                    const struct pipe_shader_state *templ)
 141 {
 142    unsigned hash_key = cso_construct_key((void*)templ,
 143                                          sizeof(struct pipe_shader_state));
 144    struct cso_hash_iter iter = cso_find_state_template(st->cache,
 145                                                        hash_key, CSO_VERTEX_SHADER,
 146                                                        (void*)templ);
 147    if (cso_hash_iter_is_null(iter)) {
 148       struct cso_vertex_shader *cso = malloc(sizeof(struct cso_vertex_shader));
 149       memcpy(&cso->state, templ, sizeof(struct pipe_shader_state));
 150       cso->data = st->pipe->create_vs_state(st->pipe, templ);
 151       if (!cso->data)
 152          cso->data = &cso->state;
 153       iter = cso_insert_state(st->cache, hash_key, CSO_VERTEX_SHADER, cso);
 154    }
 155    return (struct cso_vertex_shader*)(cso_hash_iter_data(iter));
 156 }