povray-png.patch

   1 --- povray-3.6.1/source/png_pov.cpp.wiget       2010-01-29 21:35:24.000000000 +0100
   2 +++ povray-3.6.1/source/png_pov.cpp     2010-01-29 21:35:33.000000000 +0100
   3 @@ -782,7 +782,7 @@ PNG_Image::~PNG_Image()
   4        {
   5           // finished prematurely - trick into thinking done
   6           png_ptr->num_rows = png_ptr->row_number;
   7 -         png_write_finish_row(png_ptr);
   8 +         png_write_row(png_ptr, row_ptr);
   9        }
  10
  11  #ifdef POV_COMMENTS // temporarily skip comment writing code
  12 @@ -1428,7 +1428,7 @@ void Read_Png_Image(IMAGE *Image, char *
  13                 if(r_info_ptr->valid & PNG_INFO_tRNS)
  14                 {
  15                         for (index = 0; index < r_info_ptr->num_trans; index++)
  16 -                               cmap[index].Transmit = 255 - r_info_ptr->trans[index];
  17 +                               cmap[index].Transmit = 255 - r_info_ptr->trans_alpha[index];
  18                 }
  19
  20                 Image->data.map_lines = (unsigned char **)POV_MALLOC(height * sizeof(unsigned char *), "PNG image");
  21 @@ -1461,7 +1461,7 @@ void Read_Png_Image(IMAGE *Image, char *
  22                 if(r_info_ptr->valid & PNG_INFO_tRNS)
  23                 {
  24                         for (index = 0; index < r_info_ptr->num_trans; index++)
  25 -                               cmap[index].Transmit = 255 - r_info_ptr->trans[index];
  26 +                               cmap[index].Transmit = 255 - r_info_ptr->trans_alpha[index];
  27                 }
  28
  29                 Image->data.map_lines = (unsigned char **)POV_MALLOC(height * sizeof(unsigned char *), "PNG image");