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