float b=gamma().b_U8_to_F32((unsigned char)png_ptr->palette[row_pointers[y][x]].blue);
float a=1.0;
if(info_ptr->valid & PNG_INFO_tRNS)
+#if (PNG_LIBPNG_VER_MAJOR > 1) || ((PNG_LIBPNG_VER_MAJOR == 1) && (PNG_LIBPNG_VER_MINOR >= 4))
+ a = (float)(unsigned char)png_ptr->trans_alpha[row_pointers[y][x]]*(1.0/255.0);
+#else
a = (float)(unsigned char)png_ptr->trans[row_pointers[y][x]]*(1.0/255.0);
+#endif
surface_buffer[y][x]=Color(
r,
g,