58 lines
2.2 KiB
HTML
58 lines
2.2 KiB
HTML
<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="resources/webxr_util.js"></script>
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<script src="resources/webxr_test_constants.js"></script>
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<script>
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let testName = "Ensure framebuffer scaling works as expected.";
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let fakeDeviceInitParams = TRACKED_IMMERSIVE_DEVICE;
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let testFunction =
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(session, fakeDeviceController, t, sessionObjects) => new Promise((resolve, reject) => {
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let gl = sessionObjects.gl;
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let webglLayer = sessionObjects.glLayer;
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let defaultFramebufferWidth = webglLayer.framebufferWidth;
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let defaultFramebufferHeight = webglLayer.framebufferHeight;
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let nativeScale = XRWebGLLayer.getNativeFramebufferScaleFactor(session);
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t.step(() => {
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// Ensure the framebuffer default sizes and native scale are all non-zero.
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assert_greater_than(defaultFramebufferWidth, 0);
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assert_greater_than(defaultFramebufferHeight, 0);
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assert_greater_than(nativeScale, 0);
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// The native scale should be the inverse for the default framebuffer scale.
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assert_approx_equals(nativeScale, 1/fakeDeviceController.defaultFramebufferScale_, FLOAT_EPSILON);
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});
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webglLayer = new XRWebGLLayer(session, gl, { framebufferScaleFactor: nativeScale });
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t.step(() => {
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// Ensure that requesting a native scale framebuffer gives the expected result.
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assert_approx_equals(webglLayer.framebufferWidth, defaultFramebufferWidth*nativeScale, 2);
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assert_approx_equals(webglLayer.framebufferHeight, defaultFramebufferHeight*nativeScale, 2);
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});
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webglLayer = new XRWebGLLayer(session, gl, { framebufferScaleFactor: 0 });
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t.step(() => {
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// Ensure that the framebuffer has a lower bounds clamp.
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assert_greater_than(webglLayer.framebufferWidth, 0);
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assert_greater_than(webglLayer.framebufferHeight, 0);
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});
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webglLayer = new XRWebGLLayer(session, gl, { framebufferScaleFactor: 100 });
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t.step(() => {
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// Ensure that the framebuffer has a reasonable upper bounds clamp.
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assert_less_than(webglLayer.framebufferWidth, defaultFramebufferWidth*100);
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assert_less_than(webglLayer.framebufferHeight, defaultFramebufferHeight*100);
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});
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resolve();
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});
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xr_session_promise_test(
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testName, testFunction, fakeDeviceInitParams, 'immersive-vr');
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</script>
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