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