dll/3rdparty/dxtn/texstore.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.3
   4  *
   5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include <assert.h>
  27
  28 #include "types.h"
  29 #include "internal.h"
  30
  31
  32 void
  33 _mesa_upscale_teximage2d (unsigned int inWidth, unsigned int inHeight,
  34                           unsigned int outWidth, unsigned int outHeight,
  35                           unsigned int comps,
  36                           const byte *src, int srcRowStride,
  37                           byte *dest)
  38 {
  39     unsigned int i, j, k;
  40
  41     assert(outWidth >= inWidth);
  42     assert(outHeight >= inHeight);
  43
  44     for (i = 0; i < outHeight; i++) {
  45         const int ii = i % inHeight;
  46         for (j = 0; j < outWidth; j++) {
  47             const int jj = j % inWidth;
  48             for (k = 0; k < comps; k++) {
  49                 dest[(i * outWidth + j) * comps + k]
  50                     = src[ii * srcRowStride + jj * comps + k];
  51             }
  52         }
  53     }
  54 }