src/mesa/state_tracker/st_atom_texture.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   *   Keith Whitwell <keith@tungstengraphics.com>
  31   *   Brian Paul
  32   */
  33
  34
  35 #include "main/macros.h"
  36
  37 #include "st_context.h"
  38 #include "st_atom.h"
  39 #include "st_texture.h"
  40 #include "st_cb_texture.h"
  41 #include "pipe/p_context.h"
  42 #include "util/u_inlines.h"
  43 #include "cso_cache/cso_context.h"
  44
  45
  46 static void
  47 update_textures(struct st_context *st)
  48 {
  49    struct pipe_context *pipe = st->pipe;
  50    struct gl_vertex_program *vprog = st->ctx->VertexProgram._Current;
  51    struct gl_fragment_program *fprog = st->ctx->FragmentProgram._Current;
  52    const GLbitfield samplersUsed = (vprog->Base.SamplersUsed |
  53                                     fprog->Base.SamplersUsed);
  54    GLuint su;
  55
  56    st->state.num_textures = 0;
  57
  58    /* loop over sampler units (aka tex image units) */
  59    for (su = 0; su < st->ctx->Const.MaxTextureImageUnits; su++) {
  60       struct pipe_sampler_view *sampler_view = NULL;
  61
  62       if (samplersUsed & (1 << su)) {
  63          struct gl_texture_object *texObj;
  64          struct st_texture_object *stObj;
  65          GLboolean flush, retval;
  66          GLuint texUnit;
  67
  68          if (fprog->Base.SamplersUsed & (1 << su))
  69             texUnit = fprog->Base.SamplerUnits[su];
  70          else
  71             texUnit = vprog->Base.SamplerUnits[su];
  72
  73          texObj = st->ctx->Texture.Unit[texUnit]._Current;
  74
  75          if (!texObj) {
  76             texObj = st_get_default_texture(st);
  77          }
  78          stObj = st_texture_object(texObj);
  79
  80          retval = st_finalize_texture(st->ctx, st->pipe, texObj, &flush);
  81          if (!retval) {
  82             /* out of mem */
  83             continue;
  84          }
  85
  86          st->state.num_textures = su + 1;
  87
  88          sampler_view = st_get_texture_sampler_view(stObj, pipe);
  89       }
  90
  91       /*
  92       if (pt) {
  93          printf("%s su=%u non-null\n", __FUNCTION__, su);
  94       }
  95       else {
  96          printf("%s su=%u null\n", __FUNCTION__, su);
  97       }
  98       */
  99
 100       pipe_sampler_view_reference(&st->state.sampler_views[su], sampler_view);
 101    }
 102
 103    cso_set_fragment_sampler_views(st->cso_context,
 104                                   st->state.num_textures,
 105                                   st->state.sampler_views);
 106    if (st->ctx->Const.MaxVertexTextureImageUnits > 0) {
 107       cso_set_vertex_sampler_views(st->cso_context,
 108                                    MIN2(st->state.num_textures,
 109                                         st->ctx->Const.MaxVertexTextureImageUnits),
 110                                    st->state.sampler_views);
 111    }
 112 }
 113
 114
 115 const struct st_tracked_state st_update_texture = {
 116    "st_update_texture",                                 /* name */
 117    {                                                    /* dirty */
 118       _NEW_TEXTURE,                                     /* mesa */
 119       ST_NEW_FRAGMENT_PROGRAM,                          /* st */
 120    },
 121    update_textures                                      /* update */
 122 };
 123
 124
 125
 126
 127 static void
 128 finalize_textures(struct st_context *st)
 129 {
 130    struct gl_fragment_program *fprog = st->ctx->FragmentProgram._Current;
 131    const GLboolean prev_missing_textures = st->missing_textures;
 132    GLuint su;
 133
 134    st->missing_textures = GL_FALSE;
 135
 136    for (su = 0; su < st->ctx->Const.MaxTextureCoordUnits; su++) {
 137       if (fprog->Base.SamplersUsed & (1 << su)) {
 138          const GLuint texUnit = fprog->Base.SamplerUnits[su];
 139          struct gl_texture_object *texObj
 140             = st->ctx->Texture.Unit[texUnit]._Current;
 141          struct st_texture_object *stObj = st_texture_object(texObj);
 142
 143          if (texObj) {
 144             GLboolean flush, retval;
 145
 146             retval = st_finalize_texture(st->ctx, st->pipe, texObj, &flush);
 147             if (!retval) {
 148                /* out of mem */
 149                st->missing_textures = GL_TRUE;
 150                continue;
 151             }
 152
 153             stObj->teximage_realloc = TRUE;
 154          }
 155       }
 156    }
 157
 158    if (prev_missing_textures != st->missing_textures)
 159       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
 160 }
 161
 162
 163
 164 const struct st_tracked_state st_finalize_textures = {
 165    "st_finalize_textures",              /* name */
 166    {                                    /* dirty */
 167       _NEW_TEXTURE,                     /* mesa */
 168       0,                                /* st */
 169    },
 170    finalize_textures                    /* update */
 171 };