src/gallium/drivers/llvmpipe/lp_state_sampler.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 /* Authors:
  29  *  Brian Paul
  30  */
  31
  32 #include "util/u_inlines.h"
  33 #include "util/u_memory.h"
  34
  35 #include "draw/draw_context.h"
  36
  37 #include "lp_context.h"
  38 #include "lp_context.h"
  39 #include "lp_state.h"
  40 #include "lp_texture.h"
  41 #include "draw/draw_context.h"
  42
  43
  44
  45 void *
  46 llvmpipe_create_sampler_state(struct pipe_context *pipe,
  47                               const struct pipe_sampler_state *sampler)
  48 {
  49    return mem_dup(sampler, sizeof(*sampler));
  50 }
  51
  52
  53 void
  54 llvmpipe_bind_sampler_states(struct pipe_context *pipe,
  55                              unsigned num, void **sampler)
  56 {
  57    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  58    unsigned i;
  59
  60    assert(num <= PIPE_MAX_SAMPLERS);
  61
  62    /* Check for no-op */
  63    if (num == llvmpipe->num_samplers &&
  64        !memcmp(llvmpipe->sampler, sampler, num * sizeof(void *)))
  65       return;
  66
  67    draw_flush(llvmpipe->draw);
  68
  69    for (i = 0; i < num; ++i)
  70       llvmpipe->sampler[i] = sampler[i];
  71    for (i = num; i < PIPE_MAX_SAMPLERS; ++i)
  72       llvmpipe->sampler[i] = NULL;
  73
  74    llvmpipe->num_samplers = num;
  75
  76    llvmpipe->dirty |= LP_NEW_SAMPLER;
  77 }
  78
  79
  80 void
  81 llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
  82                                     unsigned num_samplers,
  83                                     void **samplers)
  84 {
  85    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  86    unsigned i;
  87
  88    assert(num_samplers <= PIPE_MAX_VERTEX_SAMPLERS);
  89
  90    /* Check for no-op */
  91    if (num_samplers == llvmpipe->num_vertex_samplers &&
  92        !memcmp(llvmpipe->vertex_samplers, samplers, num_samplers * sizeof(void *)))
  93       return;
  94
  95    draw_flush(llvmpipe->draw);
  96
  97    for (i = 0; i < num_samplers; ++i)
  98       llvmpipe->vertex_samplers[i] = samplers[i];
  99    for (i = num_samplers; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
 100       llvmpipe->vertex_samplers[i] = NULL;
 101
 102    llvmpipe->num_vertex_samplers = num_samplers;
 103
 104    llvmpipe->dirty |= LP_NEW_SAMPLER;
 105 }
 106
 107
 108 void
 109 llvmpipe_set_sampler_textures(struct pipe_context *pipe,
 110                               unsigned num, struct pipe_texture **texture)
 111 {
 112    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 113    uint i;
 114
 115    assert(num <= PIPE_MAX_SAMPLERS);
 116
 117    /* Check for no-op */
 118    if (num == llvmpipe->num_textures &&
 119        !memcmp(llvmpipe->texture, texture, num * sizeof(struct pipe_texture *)))
 120       return;
 121
 122    draw_flush(llvmpipe->draw);
 123
 124    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 125       struct pipe_texture *tex = i < num ? texture[i] : NULL;
 126
 127       pipe_texture_reference(&llvmpipe->texture[i], tex);
 128    }
 129
 130    llvmpipe->num_textures = num;
 131
 132    llvmpipe->dirty |= LP_NEW_TEXTURE;
 133 }
 134
 135
 136 void
 137 llvmpipe_set_vertex_sampler_textures(struct pipe_context *pipe,
 138                                      unsigned num_textures,
 139                                      struct pipe_texture **textures)
 140 {
 141    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 142    uint i;
 143
 144    assert(num_textures <= PIPE_MAX_VERTEX_SAMPLERS);
 145
 146    /* Check for no-op */
 147    if (num_textures == llvmpipe->num_vertex_textures &&
 148        !memcmp(llvmpipe->vertex_textures, textures, num_textures * sizeof(struct pipe_texture *))) {
 149       return;
 150    }
 151
 152    draw_flush(llvmpipe->draw);
 153
 154    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 155       struct pipe_texture *tex = i < num_textures ? textures[i] : NULL;
 156
 157       pipe_texture_reference(&llvmpipe->vertex_textures[i], tex);
 158    }
 159
 160    llvmpipe->num_vertex_textures = num_textures;
 161
 162    llvmpipe->dirty |= LP_NEW_TEXTURE;
 163 }
 164
 165
 166 void
 167 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 168                               void *sampler)
 169 {
 170    FREE( sampler );
 171 }
 172
 173
 174