| <!DOCTYPE html> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <script src="file:///gen/layout_test_data/mojo/public/js/mojo_bindings.js"></script> |
| <script src="file:///gen/device/vr/public/mojom/vr_service.mojom.js"></script> |
| <script src="../external/wpt/resources/chromium/webxr-test.js"></script> |
| <script src="../external/wpt/webxr/resources/webxr_test_constants.js"></script> |
| <script src="../xr/resources/xr-test-utils.js"></script> |
| <canvas id="webgl-canvas"></canvas> |
| |
| <script> |
| |
| let testName = "Ensure framebuffer scaling works as expected."; |
| |
| let fakeDeviceInitParams = { supportsImmersive: true }; |
| |
| let requestSessionModes = ['immersive-vr']; |
| |
| let testFunction = |
| (session, t, fakeDeviceController) => new Promise((resolve, reject) => { |
| // Session must have a baseLayer or else frame requests will be ignored. |
| let webglLayer = new XRWebGLLayer(session, gl); |
| let defaultFramebufferWidth = webglLayer.framebufferWidth; |
| let defaultFramebufferHeight = webglLayer.framebufferHeight; |
| let nativeScale = XRWebGLLayer.getNativeFramebufferScaleFactor(session); |
| |
| t.step(() => { |
| // Ensure the framebuffer default sizes and native scale are all non-zero. |
| assert_greater_than(defaultFramebufferWidth, 0); |
| assert_greater_than(defaultFramebufferHeight, 0); |
| assert_greater_than(nativeScale, 0); |
| |
| // The native scale should be the inverse for the default framebuffer scale. |
| assert_approx_equals(nativeScale, 1/fakeDeviceController.displayInfo_.webxrDefaultFramebufferScale, FLOAT_EPSILON); |
| }); |
| |
| webglLayer = new XRWebGLLayer(session, gl, { framebufferScaleFactor: nativeScale }); |
| t.step(() => { |
| // Ensure that requesting a native scale framebuffer gives the expected result. |
| assert_approx_equals(webglLayer.framebufferWidth, defaultFramebufferWidth*nativeScale, 2); |
| assert_approx_equals(webglLayer.framebufferHeight, defaultFramebufferHeight*nativeScale, 2); |
| }); |
| |
| webglLayer = new XRWebGLLayer(session, gl, { framebufferScaleFactor: 0 }); |
| t.step(() => { |
| // Ensure that the framebuffer has a lower bounds clamp. |
| assert_greater_than(webglLayer.framebufferWidth, 0); |
| assert_greater_than(webglLayer.framebufferHeight, 0); |
| }); |
| |
| webglLayer = new XRWebGLLayer(session, gl, { framebufferScaleFactor: 100 }); |
| t.step(() => { |
| // Ensure that the framebuffer has a reasonable upper bounds clamp. |
| assert_less_than(webglLayer.framebufferWidth, defaultFramebufferWidth*100); |
| assert_less_than(webglLayer.framebufferHeight, defaultFramebufferHeight*100); |
| }); |
| |
| resolve(); |
| }); |
| |
| xr_session_promise_test( |
| testFunction, fakeDeviceInitParams, requestSessionModes, testName); |
| |
| </script> |
