<!DOCTYPE HTML>
<title>WebGL test: bug 958491</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<script src="driver-info.js"></script>
<body>
<canvas id="c"></canvas>
<script>

// Give ourselves a scope to return early from:
(function() {
  var gl = c.getContext('webgl');
  if (!gl) {
    todo(false, 'WebGL is unavailable.');
    return;
  }

  function checkGLError(func, info, reference) {
    var error = gl.getError();
    var prefix = info ? ('[' + info + '] ') : '';
    var text = 'gl.getError should be 0x' + reference.toString(16) +
               ', was 0x' + error.toString(16) + '.';
    func(error == reference, prefix + text);
  }

  // Begin test:
  var rb = gl.createRenderbuffer();
  gl.bindRenderbuffer(gl.RENDERBUFFER, rb);
  gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, 4, 4);

  var fb = gl.createFramebuffer();
  gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0,
                             gl.RENDERBUFFER, rb);

  checkGLError(ok, 'before bad param query', 0);

  var GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING = 0x8210;
  var result = gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER,
                                                    gl.COLOR_ATTACHMENT0,
                                                    GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING);

  checkGLError(ok, 'after bad param query', gl.INVALID_ENUM);
})();

</script>

