<!DOCTYPE html> <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> let immersiveTestName = "Ensure that the framebuffer given by the WebGL layer" + " is opaque for immersive"; let nonImmersiveTestName = "Ensure that the framebuffer given by the WebGL layer" + " is opaque for non-immersive"; let fakeDeviceInitParams = TRACKED_IMMERSIVE_DEVICE; let testFunction = (session, fakeDeviceController, t, sessionObjects) => new Promise((resolve, reject) => { let gl = sessionObjects.gl; let webglLayer = sessionObjects.glLayer; let xrFramebuffer = webglLayer.framebuffer; // Make sure we're starting with a clean error slate. assert_equals(gl.getError(), gl.NO_ERROR); if (session.mode == 'inline') { // Creating a layer with an inline session should return a framebuffer of // null, and as such most of these tests won't apply. assert_equals(xrFramebuffer, null); resolve(); return; } assert_not_equals(xrFramebuffer, null); // The XR framebuffer is not bound to the GL context by default. assert_not_equals(xrFramebuffer, gl.getParameter(gl.FRAMEBUFFER_BINDING)); assert_greater_than(webglLayer.framebufferWidth, 0); assert_greater_than(webglLayer.framebufferHeight, 0); gl.bindFramebuffer(gl.FRAMEBUFFER, xrFramebuffer); assert_equals(gl.getError(), gl.NO_ERROR); gl.deleteFramebuffer(xrFramebuffer); assert_equals(gl.getError(), gl.INVALID_OPERATION); // Make sure the framebuffer is still bound after failed attempt to delete. let boundFramebuffer = gl.getParameter(gl.FRAMEBUFFER_BINDING); assert_equals(xrFramebuffer, boundFramebuffer); assert_equals(gl.getError(), gl.NO_ERROR); // WebGL 2 does not throw an error and instead returns 0 when there are no // attachments if (gl.getParameter(gl.VERSION).includes("WebGL 1.0")) { // Ensure the framebuffer attachment properties cannot be inspected. let attachments = [ gl.COLOR_ATTACHMENT0, gl.DEPTH_ATTACHMENT, gl.STENCIL_ATTACHMENT, ]; let parameters = [ gl.FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, gl.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, gl.FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL, gl.FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE, ]; for (let attachment of attachments) { for (let parameter of parameters) { let value = gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER, attachment, parameter); assert_equals(value, null); assert_equals(gl.getError(), gl.INVALID_OPERATION); } } } let width = 64; let height = 64; // Ensure the framebuffer texture 2D attachmentments cannot be changed. var texture = gl.createTexture(); gl.bindTexture(gl.TEXTURE_2D, texture); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0); assert_equals(gl.getError(), gl.INVALID_OPERATION); // Ensure the framebuffer renderbuffer attachmentments cannot be changed. let renderbuffer = gl.createRenderbuffer(); gl.bindRenderbuffer(gl.RENDERBUFFER, renderbuffer); gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, width, height); gl.framebufferRenderbuffer( gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, renderbuffer); assert_equals(gl.getError(), gl.INVALID_OPERATION); gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, width, height); gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_STENCIL_ATTACHMENT, gl.RENDERBUFFER, renderbuffer); assert_equals(gl.getError(), gl.INVALID_OPERATION); // Framebuffer status must be unsupported outside of a XR frame callback. assert_equals(gl.checkFramebufferStatus(gl.FRAMEBUFFER), gl.FRAMEBUFFER_UNSUPPORTED); session.requestAnimationFrame((time, xrFrame) => { // Framebuffer status must be complete inside of a XR frame callback. assert_equals(gl.checkFramebufferStatus(gl.FRAMEBUFFER), gl.FRAMEBUFFER_COMPLETE); // Finished. resolve(); }); }); xr_session_promise_test( immersiveTestName, testFunction, fakeDeviceInitParams, 'immersive-vr'); xr_session_promise_test( nonImmersiveTestName, testFunction, fakeDeviceInitParams, 'inline'); </script>