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