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_cb_texture.h"
  38 #include "pipe/p_context.h"
  39 #include "pipe/p_defines.h"
  40
  41
  42 /**
  43  * XXX This needs some work yet....
  44  * Need to "upload" texture images at appropriate times.
  45  */
  46 static void
  47 update_textures(struct st_context *st)
  48 {
  49    GLuint s;
  50
  51    /* ST_NEW_FRAGMENT_PROGRAM
  52     */
  53    struct gl_fragment_program *fprog = st->ctx->FragmentProgram._Current;
  54
  55    for (s = 0; s < st->ctx->Const.MaxTextureCoordUnits; s++) {
  56       GLuint su = fprog->Base.SamplerUnits[s];
  57
  58       struct gl_texture_object *texObj
  59          = st->ctx->Texture.Unit[su]._Current;
  60
  61       struct pipe_texture *pt;
  62
  63       if (texObj) {
  64          GLboolean flush, retval;
  65
  66          retval = st_finalize_texture(st->ctx, st->pipe, texObj, &flush);
  67
  68          pt = st_get_texobj_texture(texObj);
  69       }
  70       else {
  71          pt = NULL;
  72       }
  73
  74       /* XXX: need to ensure that textures are unbound/removed from
  75        * this table before being deleted, otherwise the pointer
  76        * comparison below could fail.
  77        */
  78       if (st->state.sampler_texture[s] != pt) {
  79          st->state.sampler_texture[s] = pt;
  80          st->pipe->set_sampler_texture(st->pipe, s, pt);
  81       }
  82    }
  83 }
  84
  85
  86 const struct st_tracked_state st_update_texture = {
  87    .name = "st_update_texture",
  88    .dirty = {
  89       .mesa = _NEW_TEXTURE,
  90       .st  = ST_NEW_FRAGMENT_PROGRAM,
  91    },
  92    .update = update_textures
  93 };
  94
  95
  96
  97
  98