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<!doctype html>
<title>XRWebGLBinding::createEquirectLayer</title>
<link rel="help" href="https://immersive-web.github.io/layers/#dom-xrwebglbinding-createquadlayer">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/webxr_util.js"></script>
<script src="../resources/webxr_test_constants.js"></script>
<script src="./xr_layer_promise_test.js"></script>
<canvas id="webgl-canvas"></canvas>
<script>
function testCreateEquirectLayer(xrSession, deviceController, t, { gl, xrBinding, xrSpace }) {
return new Promise((resolve, reject) => {
const valid_init = {
space: xrSpace,
viewPixelWidth: 1024,
viewPixelHeight: 1024
};
t.step(() => {
// Check that create method clamps negative radius and angles according to spec.
let init_clamp_values = Object.assign({}, valid_init, {
radius: -2,
centralHorizontalAngle: -5,
upperVerticalAngle: -3,
lowerVerticalAngle: -3
});
let layer = xrBinding.createEquirectLayer(init_clamp_values);
assert_equals(layer.radius, 0, "radius should be zero.");
assert_equals(layer.centralHorizontalAngle, 0,
"centralHorizontalAngle should be zero.");
assert_true(
Math.abs(layer.upperVerticalAngle + Math.PI / 2) < FLOAT_EPSILON,
"upperVerticalAngle should be -pi/2.");
assert_true(
Math.abs(layer.lowerVerticalAngle + Math.PI / 2) < FLOAT_EPSILON,
"lowerVerticalAngle should be -pi/2.");
});
t.step(() => {
// Check that create method clamps negative radius and angles according to spec.
let init_clamp_values = Object.assign({}, valid_init, {
radius: 2,
centralHorizontalAngle: 7,
upperVerticalAngle: 3,
lowerVerticalAngle: 3
});
let layer = xrBinding.createEquirectLayer(init_clamp_values);
assert_equals(layer.radius, 2,
"The radius value should be the same as provided to the init.");
assert_true(
Math.abs(layer.centralHorizontalAngle - 2 * Math.PI) < FLOAT_EPSILON,
"centralHorizontalAngle should not be greater than a 2*pi.");
assert_true(
Math.abs(layer.upperVerticalAngle - Math.PI / 2) < FLOAT_EPSILON,
"upperVerticalAngle should be pi/2.");
assert_true(
Math.abs(layer.lowerVerticalAngle - Math.PI / 2) < FLOAT_EPSILON,
"lowerVerticalAngle should be pi/2.");
});
// Test that a valid init works.
t.step(() => {
const layer = xrBinding.createEquirectLayer(valid_init);
assert_true(layer instanceof XREquirectLayer, "Valid init parameters must create an XREquirectLayer.");
resolve();
});
});
}
xr_layer_promise_test("Ensure XrWebGLBinding::createEquirectLayer throws the appropriate errors",
testCreateEquirectLayer, TRACKED_IMMERSIVE_DEVICE, 'immersive-vr', { requiredFeatures: ['layers'] });
</script>
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