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<!doctype html>
<title>Tests for errors with invalid XRLayerInit parameters.</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 testCommonXRLayerInitErrors(createLayerFn, valid_init, t, gl) {
const is_webgl2 = gl instanceof WebGL2RenderingContext;
return new Promise((resolve, reject) => {
const max_texture_size = gl.getParameter(gl.MAX_TEXTURE_SIZE);
if (!is_webgl2) {
// Check an exception on texture-array.
t.step(() => {
// texture-array supported for webgl2 only.
let invalid_texture_type = Object.assign({}, valid_init, { textureType: 'texture-array' });
assert_throws_js(TypeError, () => createLayerFn(invalid_texture_type), "texture-array for webgl2 only");
});
// Check an exception on webgl2 color formats.
t.step(() => {
[
0x8058, // GL_RGBA8
0x8051, // GL_RGB8
0x8C41, // GL_SRGB8
0x8C43 // GL_SRGB8_ALPHA8
].forEach((colorFormat) => {
let invalid_color_format = Object.assign({}, valid_init, { colorFormat });
assert_throws_js(TypeError, () => createLayerFn(invalid_color_format), "colorFormat for webgl2 only");
});
});
}
t.step(() => {
// Check an exception for invalid transform object.
let invalid_transform = Object.assign({}, valid_init, { transform: { x: 0, y: 0, z: 0 } });
assert_throws_js(TypeError, () => createLayerFn(invalid_transform), "Invalid transform object");
});
t.step(() => {
// viewPixelWidth and viewPixelHeight must be greater than 0.
let invalid_pixel_width = Object.assign({}, valid_init, { viewPixelWidth: 0 });
assert_throws_js(TypeError, () => createLayerFn(invalid_pixel_width), "viewPixelWidth is 0");
});
t.step(() => {
let invalid_pixel_height = Object.assign({}, valid_init, { viewPixelHeight: 0 });
assert_throws_js(TypeError, () => createLayerFn(invalid_pixel_height), "viewPixelHeight is 0");
});
// viewPixelWidth and viewPixelHeight must not be too large.
t.step(() => {
let large_pixel_width = Object.assign({}, valid_init, { viewPixelWidth: max_texture_size + 1 });
assert_throws_js(TypeError, () => createLayerFn(large_pixel_width), "viewPixelWidth is too large");
});
t.step(() => {
let large_pixel_height = Object.assign({}, valid_init, { viewPixelHeight: max_texture_size + 1 });
assert_throws_js(TypeError, () => createLayerFn(large_pixel_height), "viewPixelHeight is too large");
});
// Layout cannot be 'default'.
t.step(() => {
let invalid_layout = Object.assign({}, valid_init, { layout: 'default' });
assert_throws_js(TypeError, () => createLayerFn(invalid_layout), "layout is 'default'");
resolve();
});
});
};
function testCompositionLayer(xrSession, deviceController, t, { gl, xrBinding, xrSpace }) {
const valid_init = {
space: xrSpace,
viewPixelWidth: 1024,
viewPixelHeight: 1024
};
return Promise.resolve()
.then(testCommonXRLayerInitErrors(xrBinding.createQuadLayer.bind(xrBinding), valid_init, t, gl))
.then(testCommonXRLayerInitErrors(xrBinding.createCylinderLayer.bind(xrBinding), valid_init, t, gl))
.then(testCommonXRLayerInitErrors(xrBinding.createEquirectLayer.bind(xrBinding), valid_init, t, gl));
}
// This method tests XRLayerInit parameters, which are common to the Quad,Cylinder and Equirect layers.
xr_layer_promise_test("Ensure XrWebGLBinding's create layer methods throw the appropriate errors.",
testCompositionLayer, TRACKED_IMMERSIVE_DEVICE, 'immersive-vr', { requiredFeatures: ['layers'] });
</script>
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