1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/image/test/reftest/colordepth.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,16 @@
1.4 +<script>
1.5 +/*
1.6 + * Almost all of the image decoding reftests require the display to be in
1.7 + * 24-bit color mode, or else the rendered images will have subtle color
1.8 + * variations and will fail.
1.9 + * The Windows test boxes used to have a tendency to flip to 16-bit color mode,
1.10 + * so this test will explicitly check the color depth to make it more obvious
1.11 + * when the requirement is not met. (See bug 414720.)
1.12 + * 24-bit is only a minimum, allow higher values too. (See bug 458847.)
1.13 + */
1.14 +
1.15 +var colorDepth = window.screen.colorDepth;
1.16 +
1.17 +if (colorDepth < 24)
1.18 + document.write("ERROR: color depth is only " + colorDepth + ".");
1.19 +</script>
