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_memory.h"
  33
  34 #include "draw/draw_context.h"
  35
  36 #include "lp_context.h"
  37 #include "lp_context.h"
  38 #include "lp_state.h"
  39 #include "lp_texture.h"
  40 #include "draw/draw_context.h"
  41
  42
  43
  44 void *
  45 llvmpipe_create_sampler_state(struct pipe_context *pipe,
  46                               const struct pipe_sampler_state *sampler)
  47 {
  48    return mem_dup(sampler, sizeof(*sampler));
  49 }
  50
  51
  52 void
  53 llvmpipe_bind_sampler_states(struct pipe_context *pipe,
  54                              unsigned num, void **sampler)
  55 {
  56    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  57    unsigned i;
  58
  59    assert(num <= PIPE_MAX_SAMPLERS);
  60
  61    /* Check for no-op */
  62    if (num == llvmpipe->num_samplers &&
  63        !memcmp(llvmpipe->sampler, sampler, num * sizeof(void *)))
  64       return;
  65
  66    draw_flush(llvmpipe->draw);
  67
  68    for (i = 0; i < num; ++i)
  69       llvmpipe->sampler[i] = sampler[i];
  70    for (i = num; i < PIPE_MAX_SAMPLERS; ++i)
  71       llvmpipe->sampler[i] = NULL;
  72
  73    llvmpipe->num_samplers = num;
  74
  75    llvmpipe->dirty |= LP_NEW_SAMPLER;
  76 }
  77
  78
  79 void
  80 llvmpipe_set_sampler_textures(struct pipe_context *pipe,
  81                               unsigned num, struct pipe_texture **texture)
  82 {
  83    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  84    uint i;
  85
  86    assert(num <= PIPE_MAX_SAMPLERS);
  87
  88    /* Check for no-op */
  89    if (num == llvmpipe->num_textures &&
  90        !memcmp(llvmpipe->texture, texture, num * sizeof(struct pipe_texture *)))
  91       return;
  92
  93    draw_flush(llvmpipe->draw);
  94
  95    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
  96       struct pipe_texture *tex = i < num ? texture[i] : NULL;
  97
  98       pipe_texture_reference(&llvmpipe->texture[i], tex);
  99    }
 100
 101    llvmpipe->num_textures = num;
 102
 103    llvmpipe->dirty |= LP_NEW_TEXTURE;
 104 }
 105
 106
 107 void
 108 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 109                               void *sampler)
 110 {
 111    FREE( sampler );
 112 }
 113
 114
 115