115 lines
4.0 KiB
C++
115 lines
4.0 KiB
C++
/*
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* Copyright (C) 2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(GPU_PROCESS) && ENABLE(WEBGL)
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#include "ExtensionsGL.h"
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#include "GraphicsContextGL.h"
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#include <wtf/HashSet.h>
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#include <wtf/text/StringHash.h>
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#if PLATFORM(COCOA)
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#include <wtf/RetainPtr.h>
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#endif
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#if PLATFORM(COCOA)
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OBJC_CLASS WebGLLayer;
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#endif
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namespace WebCore {
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#if PLATFORM(COCOA)
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class GraphicsContextGLIOSurfaceSwapChain;
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#endif
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// A base class for RemoteGraphicsContextGL proxy side implementation
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// This implements the parts that are using WebCore internal functionality:
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// - Drawing buffer tracking management.
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// - Compositing support.
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class WEBCORE_EXPORT RemoteGraphicsContextGLProxyBase : public GraphicsContextGL, public ExtensionsGL {
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public:
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RemoteGraphicsContextGLProxyBase(const GraphicsContextGLAttributes&);
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~RemoteGraphicsContextGLProxyBase() override;
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// Other WebCore::GraphicsContextGL overrides.
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using GraphicsContextGL::isEnabled;
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PlatformLayer* platformLayer() const final;
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ExtensionsGL& getExtensions() final;
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void setContextVisibility(bool) final;
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bool isGLES2Compliant() const final;
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void markContextChanged() final;
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bool layerComposited() const final;
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void setBuffersToAutoClear(GCGLbitfield) final;
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GCGLbitfield getBuffersToAutoClear() const final;
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void markLayerComposited() final;
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void enablePreserveDrawingBuffer() final;
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#if ENABLE(VIDEO) && USE(AVFOUNDATION)
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GraphicsContextGLCV* asCV() final;
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#endif
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// Other ExtensionGL overrides.
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using ExtensionsGL::isEnabled;
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bool supports(const String&) final;
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void ensureEnabled(const String&) final;
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bool isEnabled(const String&) final;
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#if !USE(ANGLE)
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void readnPixelsEXT(GCGLint, GCGLint, GCGLsizei, GCGLsizei, GCGLenum, GCGLenum, GCGLsizei, GCGLvoid*) final;
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void getnUniformfvEXT(GCGLuint, GCGLint, GCGLsizei, GCGLfloat*) final;
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void getnUniformivEXT(GCGLuint, GCGLint, GCGLsizei, GCGLint*) final;
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#endif
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protected:
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void initialize(const String& availableExtensions, const String& requestableExtensions);
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virtual void waitUntilInitialized() = 0;
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virtual void ensureExtensionEnabled(const String&) = 0;
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virtual void notifyMarkContextChanged() = 0;
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#if PLATFORM(COCOA)
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GraphicsContextGLIOSurfaceSwapChain& platformSwapChain();
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#endif
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private:
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void platformInitialize();
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#if PLATFORM(COCOA)
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RetainPtr<WebGLLayer> m_webGLLayer;
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#endif
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// Guarded by waitUntilInitialized().
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HashSet<String> m_availableExtensions;
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HashSet<String> m_requestableExtensions;
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HashSet<String> m_enabledExtensions;
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// FIXME: Drawing buffer clear tracking should be moved to the client.
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bool m_layerComposited = false;
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GCGLbitfield m_buffersToAutoClear = { 0 };
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};
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}
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#endif
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