test_fb_param.html

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<!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>