| /* |
| * Copyright (C) 2020 Igalia S.L. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "WebXRWebGLLayer.h" |
| |
| #if ENABLE(WEBXR) |
| |
| #include "WebGLFramebuffer.h" |
| #include "WebGLRenderingContext.h" |
| #if ENABLE(WEBGL2) |
| #include "WebGL2RenderingContext.h" |
| #endif |
| #include "WebXRSession.h" |
| #include "WebXRViewport.h" |
| #include "XRWebGLLayerInit.h" |
| |
| namespace WebCore { |
| |
| ExceptionOr<Ref<WebXRWebGLLayer>> WebXRWebGLLayer::create(const WebXRSession& session, WebXRRenderingContext&& context, const XRWebGLLayerInit& init) |
| { |
| // The XRWebGLLayer(session, context, layerInit) constructor MUST perform the following steps when invoked: |
| // 1. Let layer be a new XRWebGLLayer |
| |
| // 2. If session’s ended value is true, throw an InvalidStateError and abort these steps. |
| if (session.ended()) |
| return Exception { InvalidStateError }; |
| |
| // 3. If context is lost, throw an InvalidStateError and abort these steps. |
| // 4. If context’s XR compatible boolean is false, throw an InvalidStateError and abort these steps. |
| // FIXME: TODO |
| |
| // 5. Initialize layer’s context to context. |
| // 6. Initialize layer’s antialias to layerInit’s antialias value. |
| // 7. If layerInit’s ignoreDepthValues value is false and the XR Compositor will make use of depth values, Initialize layer’s ignoreDepthValues to false. |
| // 8. Else Initialize layer’s ignoreDepthValues to true |
| // 9. Initialize layer’s framebuffer to a new opaque framebuffer created with context. |
| // 10. Initialize the layer’s swap chain. |
| // 11. If layer’s swap chain was unable to be created for any reason, throw an OperationError and abort these steps. |
| // FIXME: TODO |
| |
| // 12. Return layer. |
| return adoptRef(*new WebXRWebGLLayer(session, WTFMove(context), init)); |
| } |
| |
| WebXRWebGLLayer::WebXRWebGLLayer(const WebXRSession&, WebXRRenderingContext&& context, const XRWebGLLayerInit& init) |
| : m_context(WTFMove(context)) |
| , m_antialias(init.antialias) |
| , m_ignoreDepthValues(init.ignoreDepthValues) |
| { |
| m_framebuffer.object = WTF::switchOn(m_context, |
| [](const RefPtr<WebGLRenderingContext>& context) |
| { |
| RefPtr<WebGLFramebuffer> frameBuffer = WebGLFramebuffer::create(*context); |
| return frameBuffer; |
| }, |
| #if ENABLE(WEBGL2) |
| [](const RefPtr<WebGL2RenderingContext>& context) |
| { |
| RefPtr<WebGLFramebuffer> frameBuffer = WebGLFramebuffer::create(*context); |
| return frameBuffer; |
| }, |
| #endif |
| [](WTF::Monostate) { |
| ASSERT_NOT_REACHED(); |
| return nullptr; |
| } |
| ); |
| } |
| |
| WebXRWebGLLayer::~WebXRWebGLLayer() = default; |
| |
| bool WebXRWebGLLayer::antialias() const |
| { |
| return m_antialias; |
| } |
| |
| bool WebXRWebGLLayer::ignoreDepthValues() const |
| { |
| return m_ignoreDepthValues; |
| } |
| |
| const WebGLFramebuffer& WebXRWebGLLayer::framebuffer() const |
| { |
| return *m_framebuffer.object; |
| } |
| |
| unsigned WebXRWebGLLayer::framebufferWidth() const |
| { |
| return m_framebuffer.width; |
| } |
| |
| unsigned WebXRWebGLLayer::framebufferHeight() const |
| { |
| return m_framebuffer.height; |
| } |
| |
| RefPtr<WebXRViewport> WebXRWebGLLayer::getViewport(const WebXRView&) |
| { |
| return { }; |
| } |
| |
| double WebXRWebGLLayer::getNativeFramebufferScaleFactor(const WebXRSession&) |
| { |
| return 1.0; |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(WEBXR) |