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