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 "draw/draw_context.h"
  41
  42
  43
  44 static 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 static 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 static void
  80 llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
  81                                     unsigned num_samplers,
  82                                     void **samplers)
  83 {
  84    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  85    unsigned i;
  86
  87    assert(num_samplers <= PIPE_MAX_VERTEX_SAMPLERS);
  88
  89    /* Check for no-op */
  90    if (num_samplers == llvmpipe->num_vertex_samplers &&
  91        !memcmp(llvmpipe->vertex_samplers, samplers, num_samplers * sizeof(void *)))
  92       return;
  93
  94    draw_flush(llvmpipe->draw);
  95
  96    for (i = 0; i < num_samplers; ++i)
  97       llvmpipe->vertex_samplers[i] = samplers[i];
  98    for (i = num_samplers; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
  99       llvmpipe->vertex_samplers[i] = NULL;
 100
 101    llvmpipe->num_vertex_samplers = num_samplers;
 102
 103    llvmpipe->dirty |= LP_NEW_SAMPLER;
 104 }
 105
 106
 107 static void
 108 llvmpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
 109                                       unsigned num, void **sampler)
 110 {
 111    /* XXX: implementation missing */
 112 }
 113
 114 static void
 115 llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
 116                                     unsigned num,
 117                                     struct pipe_sampler_view **views)
 118 {
 119    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 120    uint i;
 121
 122    assert(num <= PIPE_MAX_SAMPLERS);
 123
 124    /* Check for no-op */
 125    if (num == llvmpipe->num_fragment_sampler_views &&
 126        !memcmp(llvmpipe->fragment_sampler_views, views, num * sizeof(struct pipe_sampler_view *)))
 127       return;
 128
 129    draw_flush(llvmpipe->draw);
 130
 131    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 132       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 133
 134       pipe_sampler_view_reference(&llvmpipe->fragment_sampler_views[i], view);
 135    }
 136
 137    llvmpipe->num_fragment_sampler_views = num;
 138
 139    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 140 }
 141
 142
 143 static void
 144 llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
 145                                   unsigned num,
 146                                   struct pipe_sampler_view **views)
 147 {
 148    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 149    uint i;
 150
 151    assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 152
 153    /* Check for no-op */
 154    if (num == llvmpipe->num_vertex_sampler_views &&
 155        !memcmp(llvmpipe->vertex_sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
 156       return;
 157    }
 158
 159    draw_flush(llvmpipe->draw);
 160
 161    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 162       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 163
 164       pipe_sampler_view_reference(&llvmpipe->vertex_sampler_views[i], view);
 165    }
 166
 167    llvmpipe->num_vertex_sampler_views = num;
 168
 169    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 170 }
 171
 172
 173 static void
 174 llvmpipe_set_geometry_sampler_views(struct pipe_context *pipe,
 175                                     unsigned num,
 176                                     struct pipe_sampler_view **views)
 177 {
 178    /*XXX: implementation missing */
 179 }
 180
 181 static struct pipe_sampler_view *
 182 llvmpipe_create_sampler_view(struct pipe_context *pipe,
 183                             struct pipe_resource *texture,
 184                             const struct pipe_sampler_view *templ)
 185 {
 186    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 187
 188    if (view) {
 189       *view = *templ;
 190       view->reference.count = 1;
 191       view->texture = NULL;
 192       pipe_resource_reference(&view->texture, texture);
 193       view->context = pipe;
 194    }
 195
 196    return view;
 197 }
 198
 199
 200 static void
 201 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 202                               struct pipe_sampler_view *view)
 203 {
 204    pipe_resource_reference(&view->texture, NULL);
 205    FREE(view);
 206 }
 207
 208
 209 static void
 210 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 211                               void *sampler)
 212 {
 213    FREE( sampler );
 214 }
 215
 216
 217 void
 218 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 219 {
 220    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 221
 222    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_sampler_states;
 223    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
 224    llvmpipe->pipe.bind_geometry_sampler_states  = llvmpipe_bind_geometry_sampler_states;
 225    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
 226    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
 227    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
 228    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 229    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 230    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 231 }