src/gallium/drivers/softpipe/sp_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_memory.h"
  33
  34 #include "draw/draw_context.h"
  35
  36 #include "sp_context.h"
  37 #include "sp_context.h"
  38 #include "sp_state.h"
  39 #include "sp_texture.h"
  40 #include "sp_tile_cache.h"
  41 #include "draw/draw_context.h"
  42
  43
  44
  45 void *
  46 softpipe_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 softpipe_bind_sampler_states(struct pipe_context *pipe,
  55                              unsigned num, void **sampler)
  56 {
  57    struct softpipe_context *softpipe = softpipe_context(pipe);
  58    unsigned i;
  59
  60    assert(num <= PIPE_MAX_SAMPLERS);
  61
  62    /* Check for no-op */
  63    if (num == softpipe->num_samplers &&
  64        !memcmp(softpipe->sampler, sampler, num * sizeof(void *)))
  65       return;
  66
  67    draw_flush(softpipe->draw);
  68
  69    for (i = 0; i < num; ++i)
  70       softpipe->sampler[i] = sampler[i];
  71    for (i = num; i < PIPE_MAX_SAMPLERS; ++i)
  72       softpipe->sampler[i] = NULL;
  73
  74    softpipe->num_samplers = num;
  75
  76    softpipe->dirty |= SP_NEW_SAMPLER;
  77 }
  78
  79
  80 void
  81 softpipe_set_sampler_textures(struct pipe_context *pipe,
  82                               unsigned num, struct pipe_texture **texture)
  83 {
  84    struct softpipe_context *softpipe = softpipe_context(pipe);
  85    uint i;
  86
  87    assert(num <= PIPE_MAX_SAMPLERS);
  88
  89    /* Check for no-op */
  90    if (num == softpipe->num_textures &&
  91        !memcmp(softpipe->texture, texture, num * sizeof(struct pipe_texture *)))
  92       return;
  93
  94    draw_flush(softpipe->draw);
  95
  96    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
  97       struct pipe_texture *tex = i < num ? texture[i] : NULL;
  98
  99       pipe_texture_reference(&softpipe->texture[i], tex);
 100       sp_tile_cache_set_texture(pipe, softpipe->tex_cache[i], tex);
 101    }
 102
 103    softpipe->num_textures = num;
 104
 105    softpipe->dirty |= SP_NEW_TEXTURE;
 106 }
 107
 108
 109 void
 110 softpipe_delete_sampler_state(struct pipe_context *pipe,
 111                               void *sampler)
 112 {
 113    FREE( sampler );
 114 }
 115
 116
 117