;
var wtu = WebGLTestUtils;
description();

var gl = wtu.create3DContext("example");

var program = wtu.setupProgram(gl, ['vshader', 'fshader']);
gl.useProgram(program);

var positionLocation = gl.getAttribLocation(program, "a_position");
var attribLoc = gl.getAttribLocation(program, "a_actualValue");
gl.vertexAttribPointer(attribLoc, 1, gl.FLOAT, gl.FALSE, 0, 0);

var uniLoc = gl.getUniformLocation(program, "u_expectedValue");

var gridRes = 1;
wtu.setupIndexedQuad(gl, gridRes, positionLocation);

var test