png_set_tRNS_to_alpha  649 third_party/libpng/pngrtran.c png_set_tRNS_to_alpha(png_structp png_ptr)
png_set_tRNS_to_alpha  429 third_party/libpng/pngusr.h #define png_set_tRNS_to_alpha           wk_png_set_tRNS_to_alpha