OpenSceneGraph-libpng.patch

   1 --- OpenSceneGraph-2.8.2/src/osgPlugins/png/ReaderWriterPNG.cpp~        2008-07-14 00:18:59.000000000 +0200
   2 +++ OpenSceneGraph-2.8.2/src/osgPlugins/png/ReaderWriterPNG.cpp 2010-03-01 12:57:05.720365671 +0100
   3 @@ -173,7 +173,11 @@
   4                  endinfo = png_create_info_struct(png);
   5
   6                  fin.read((char*)header,8);
   7 -                if (fin.gcount() == 8 && png_check_sig(header, 8))
   8 +               #if PNG_LIBPNG_VER < 10400
   9 +                       if (fin.gcount() == 8 && png_check_sig(header, 8))
  10 +                #else
  11 +                       if (fin.gcount() == 8 && png_sig_cmp(header, 0, 8))
  12 +                #endif
  13                      png_set_read_fn(png,&fin,png_read_istream); //Use custom read function that will get data from istream
  14                  else
  15                  {
  16 @@ -224,7 +228,11 @@
  17                  if (color == PNG_COLOR_TYPE_PALETTE)
  18                      png_set_palette_to_rgb(png);
  19                  if (color == PNG_COLOR_TYPE_GRAY && depth < 8)
  20 -                    png_set_gray_1_2_4_to_8(png);
  21 +                   #if PNG_LIBPNG_VER < 10400
  22 +                       png_set_gray_1_2_4_to_8(png);
  23 +                   #else
  24 +                       png_set_expand_gray_1_2_4_to_8(png);
  25 +                   #endif
  26                  if (png_get_valid(png, info, PNG_INFO_tRNS))
  27                      png_set_tRNS_to_alpha(png);
  28