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
  42
  43 /**
  44  * XXX This needs some work yet....
  45  * Need to "upload" texture images at appropriate times.
  46  */
  47 static void
  48 update_textures(struct st_context *st)
  49 {
  50    /* ST_NEW_FRAGMENT_PROGRAM
  51     */
  52    struct gl_fragment_program *fprog = st->ctx->FragmentProgram._Current;
  53    GLuint unit;
  54
  55    st->state.num_textures = 0;
  56
  57    for (unit = 0; unit < st->ctx->Const.MaxTextureCoordUnits; unit++) {
  58       const GLuint su = fprog->Base.SamplerUnits[unit];
  59       struct pipe_texture *pt = NULL;
  60
  61       if (fprog->Base.SamplersUsed & (1 << su)) {
  62          struct gl_texture_object *texObj = st->ctx->Texture.Unit[su]._Current;
  63          struct st_texture_object *stObj = st_texture_object(texObj);
  64
  65          if (texObj) {
  66             GLboolean flush, retval;
  67
  68             retval = st_finalize_texture(st->ctx, st->pipe, texObj, &flush);
  69             if (!retval) {
  70                /* out of mem */
  71                continue;
  72             }
  73
  74             st->state.num_textures = unit + 1;
  75          }
  76
  77          pt = st_get_stobj_texture(stObj);
  78       }
  79
  80       pipe_texture_reference(&st->state.sampler_texture[unit], pt);
  81    }
  82
  83    st->pipe->set_sampler_textures(st->pipe, st->state.num_textures,
  84                                   st->state.sampler_texture);
  85 }
  86
  87
  88 const struct st_tracked_state st_update_texture = {
  89    .name = "st_update_texture",
  90    .dirty = {
  91       .mesa = _NEW_TEXTURE,
  92       .st  = ST_NEW_FRAGMENT_PROGRAM,
  93    },
  94    .update = update_textures
  95 };
  96
  97
  98
  99
 100