ED_FLOAT_EXT: 0x8E8F
};

function expectedByteLength(width, height, format) {
  return Math.ceil(width / 4) * Math.ceil(height / 4) * 16;
}

function getBlockDimensions(format) {
  return {width: 4, height: 4};
}

var wtu = WebGLTestUtils;
var ctu = CompressedTextureUtils;
var contextVersion = wtu.getDefault3DContextVersion();
var gl = wtu.create3DContext();
var ext;

var formats = null;

function runTestExtension() {
  // Test that enum values are listed correctly in supported formats and in the extension 