| |
| /* |
| * Copyright (C) 2009-2018 Apple Inc. 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. ``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 |
| * 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. |
| */ |
| |
| #import "config.h" |
| |
| #if ENABLE(WEBGL) |
| #import "GraphicsContextGLCocoa.h" // NOLINT |
| #import "GraphicsContextGLOpenGLManager.h" |
| #import "WebGLLayer.h" |
| #import <wtf/BlockObjCExceptions.h> |
| |
| namespace WebCore { |
| namespace { |
| |
| static RetainPtr<WebGLLayer> createWebGLLayer(const GraphicsContextGLAttributes& attributes) |
| { |
| RetainPtr<WebGLLayer> layer; |
| BEGIN_BLOCK_OBJC_EXCEPTIONS |
| layer = adoptNS([[WebGLLayer alloc] initWithDevicePixelRatio:attributes.devicePixelRatio contentsOpaque:!attributes.alpha]); |
| #ifndef NDEBUG |
| [layer setName:@"WebGL Layer"]; |
| #endif |
| END_BLOCK_OBJC_EXCEPTIONS |
| return layer; |
| } |
| |
| // GraphicsContextGL type that is used when WebGL is run in-process in WebContent process. |
| class WebProcessGraphicsContextGLCocoa final : public GraphicsContextGLCocoa { |
| public: |
| ~WebProcessGraphicsContextGLCocoa() = default; |
| bool isValid() const { return GraphicsContextGLCocoa::isValid() && m_webGLLayer; } |
| // GraphicsContextGLCocoa overrides. |
| PlatformLayer* platformLayer() const final { return reinterpret_cast<CALayer*>(m_webGLLayer.get()); } |
| void prepareForDisplay() final; |
| private: |
| WebProcessGraphicsContextGLCocoa(GraphicsContextGLAttributes&& attributes) |
| : GraphicsContextGLCocoa(WTFMove(attributes)) |
| , m_webGLLayer(createWebGLLayer(contextAttributes())) |
| { |
| } |
| RetainPtr<WebGLLayer> m_webGLLayer; |
| |
| friend class GraphicsContextGLOpenGL; |
| }; |
| |
| void WebProcessGraphicsContextGLCocoa::prepareForDisplay() |
| { |
| GraphicsContextGLCocoa::prepareForDisplay(); |
| auto surface = m_swapChain.displayBuffer().surface.get(); |
| if (!surface) |
| return; |
| BEGIN_BLOCK_OBJC_EXCEPTIONS |
| [m_webGLLayer setContents:surface->asLayerContents()]; |
| [m_webGLLayer setNeedsDisplay]; |
| END_BLOCK_OBJC_EXCEPTIONS |
| } |
| |
| } |
| |
| RefPtr<GraphicsContextGLOpenGL> GraphicsContextGLOpenGL::create(GraphicsContextGLAttributes attributes, HostWindow*) |
| { |
| // Make space for the incoming context if we're full. |
| GraphicsContextGLOpenGLManager::sharedManager().recycleContextIfNecessary(); |
| if (GraphicsContextGLOpenGLManager::sharedManager().hasTooManyContexts()) |
| return nullptr; |
| auto context = adoptRef(new WebProcessGraphicsContextGLCocoa(WTFMove(attributes))); |
| if (!context->isValid()) |
| return nullptr; |
| GraphicsContextGLOpenGLManager::sharedManager().addContext(context.get()); |
| |
| return context; |
| } |
| } |
| |
| #endif |