src/mesa/state_tracker/st_texobj.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  *   Brian Paul
  31  */
  32
  33 #include "imports.h"
  34 #include "texformat.h"
  35
  36 #include "st_context.h"
  37 #include "st_texobj.h"
  38 #include "pipe/p_defines.h"
  39
  40
  41 /**
  42  * Create a pipe_texture_object from a Mesa texture object.
  43  * Eventually, gl_texture_object may be derived from this...
  44  */
  45 struct pipe_texture_object *
  46 create_texture_object(struct gl_texture_object *texObj)
  47 {
  48    struct pipe_texture_object *pto;
  49    const struct gl_texture_image *texImage;
  50
  51    pto = calloc(1, sizeof(*pto));
  52    if (!pto)
  53       return NULL;
  54
  55    /* XXX: Member not defined. Comment-out to get it compile. */
  56    /*assert(texObj->Complete);*/
  57
  58    switch (texObj->Target) {
  59    case GL_TEXTURE_1D:
  60       pto->type = PIPE_TEXTURE_1D;
  61       break;
  62    case GL_TEXTURE_2D:
  63       pto->type = PIPE_TEXTURE_2D;
  64       break;
  65    case GL_TEXTURE_3D:
  66       pto->type = PIPE_TEXTURE_3D;
  67       break;
  68    case GL_TEXTURE_CUBE_MAP:
  69       pto->type = PIPE_TEXTURE_CUBE;
  70       break;
  71    default:
  72       assert(0);
  73       return NULL;
  74    }
  75
  76    texImage = texObj->Image[0][texObj->BaseLevel];
  77    assert(texImage);
  78
  79    switch (texImage->TexFormat->MesaFormat) {
  80    case MESA_FORMAT_RGBA8888:
  81       pto->format = PIPE_FORMAT_U_R8_G8_B8_A8;
  82       break;
  83    case MESA_FORMAT_RGB565:
  84       pto->format = PIPE_FORMAT_U_R5_G6_B5;
  85       break;
  86
  87    /* XXX fill in more formats */
  88
  89    default:
  90       assert(0);
  91       return NULL;
  92    }
  93
  94    pto->width = texImage->Width;
  95    pto->height = texImage->Height;
  96    pto->depth = texImage->Depth;
  97
  98    /* XXX verify this */
  99    pto->mipmapped = texObj->Image[0][texObj->BaseLevel + 1] != NULL;
 100
 101    return pto;
 102 }