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/*
* Copyright (C) 2020 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.
*/
#pragma once
#if ENABLE(GPU_PROCESS) && ENABLE(WEBGL)
#include "ExtensionsGL.h"
#include "GraphicsContextGL.h"
#include <wtf/HashSet.h>
#include <wtf/text/StringHash.h>
#if PLATFORM(COCOA)
#include <wtf/RetainPtr.h>
#endif
#if PLATFORM(COCOA)
OBJC_CLASS WebGLLayer;
#endif
namespace WebCore {
#if PLATFORM(COCOA)
class GraphicsContextGLIOSurfaceSwapChain;
#endif
// A base class for RemoteGraphicsContextGL proxy side implementation
// This implements the parts that are using WebCore internal functionality:
// - Drawing buffer tracking management.
// - Compositing support.
class WEBCORE_EXPORT RemoteGraphicsContextGLProxyBase : public GraphicsContextGL, public ExtensionsGL {
public:
RemoteGraphicsContextGLProxyBase(const GraphicsContextGLAttributes&);
~RemoteGraphicsContextGLProxyBase() override;
// Other WebCore::GraphicsContextGL overrides.
using GraphicsContextGL::isEnabled;
PlatformLayer* platformLayer() const final;
ExtensionsGL& getExtensions() final;
void setContextVisibility(bool) final;
bool isGLES2Compliant() const final;
void markContextChanged() final;
bool layerComposited() const final;
void setBuffersToAutoClear(GCGLbitfield) final;
GCGLbitfield getBuffersToAutoClear() const final;
void markLayerComposited() final;
void enablePreserveDrawingBuffer() final;
#if ENABLE(VIDEO) && USE(AVFOUNDATION)
GraphicsContextGLCV* asCV() final;
#endif
// Other ExtensionGL overrides.
using ExtensionsGL::isEnabled;
bool supports(const String&) final;
void ensureEnabled(const String&) final;
bool isEnabled(const String&) final;
#if !USE(ANGLE)
void readnPixelsEXT(GCGLint, GCGLint, GCGLsizei, GCGLsizei, GCGLenum, GCGLenum, GCGLsizei, GCGLvoid*) final;
void getnUniformfvEXT(GCGLuint, GCGLint, GCGLsizei, GCGLfloat*) final;
void getnUniformivEXT(GCGLuint, GCGLint, GCGLsizei, GCGLint*) final;
#endif
protected:
void initialize(const String& availableExtensions, const String& requestableExtensions);
virtual void waitUntilInitialized() = 0;
virtual void ensureExtensionEnabled(const String&) = 0;
virtual void notifyMarkContextChanged() = 0;
#if PLATFORM(COCOA)
GraphicsContextGLIOSurfaceSwapChain& platformSwapChain();
#endif
private:
void platformInitialize();
#if PLATFORM(COCOA)
RetainPtr<WebGLLayer> m_webGLLayer;
#endif
// Guarded by waitUntilInitialized().
HashSet<String> m_availableExtensions;
HashSet<String> m_requestableExtensions;
HashSet<String> m_enabledExtensions;
// FIXME: Drawing buffer clear tracking should be moved to the client.
bool m_layerComposited = false;
GCGLbitfield m_buffersToAutoClear = { 0 };
};
}
#endif
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