#!/bin/sh

PATH=${PWD%code*}code:$PATH

# Test that an RGB image with heterogenous channel bitdepths
# can still be converted to grey.

{ priforgepng -d 2 hs2 ; priforgepng -d 3 hs2 ; priforgepng -d 1 hs2 ; } |
  priweavepng - - - | prigreypng | pripnglsch |
  grep IHDR | grep -q 00000100000001000.00000000