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/*
* Copyright (C) 2021 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(WEBGL) && USE(TEXTURE_MAPPER)
#include "GLContextWrapper.h"
#include "GraphicsContextGLANGLE.h"
#if ENABLE(WEBXR) && USE(OPENXR)
#include <wtf/unix/UnixFileDescriptor.h>
#endif
namespace WebCore {
class TextureMapperGCGLPlatformLayer;
class GraphicsContextGLTextureMapperANGLE : public GLContextWrapper, public GraphicsContextGLANGLE {
public:
WEBCORE_EXPORT static RefPtr<GraphicsContextGLTextureMapperANGLE> create(WebCore::GraphicsContextGLAttributes&&);
virtual ~GraphicsContextGLTextureMapperANGLE();
// GraphicsContextGLANGLE overrides.
WEBCORE_EXPORT RefPtr<GraphicsLayerContentsDisplayDelegate> layerContentsDisplayDelegate() final;
#if ENABLE(VIDEO)
bool copyTextureFromVideoFrame(VideoFrame&, PlatformGLObject texture, GCGLenum target, GCGLint level, GCGLenum internalFormat, GCGLenum format, GCGLenum type, bool premultiplyAlpha, bool flipY) final;
#endif
#if ENABLE(MEDIA_STREAM) || ENABLE(WEB_CODECS)
RefPtr<VideoFrame> surfaceBufferToVideoFrame(SurfaceBuffer) final;
#endif
RefPtr<PixelBuffer> readCompositedResults() final;
bool reshapeDrawingBuffer() override;
void prepareForDisplay() override;
#if ENABLE(WEBXR)
GCGLExternalSync createExternalSync(ExternalSyncSource&&) final;
#if USE(OPENXR)
WTF::UnixFileDescriptor exportExternalSync(GCGLExternalSync) final;
#endif
bool addFoveation(IntSize, IntSize, IntSize, std::span<const GCGLfloat>, std::span<const GCGLfloat>, std::span<const GCGLfloat>) final;
void enableFoveation(GCGLuint) final;
void disableFoveation() final;
#endif
protected:
explicit GraphicsContextGLTextureMapperANGLE(WebCore::GraphicsContextGLAttributes&&);
RefPtr<GraphicsLayerContentsDisplayDelegate> m_layerContentsDisplayDelegate;
private:
bool platformInitializeContext() final;
bool platformInitialize() override;
void swapCompositorTexture();
#if USE(COORDINATED_GRAPHICS) && USE(LIBEPOXY)
GCGLuint setupCurrentTexture();
#endif
// GLContextWrapper
GLContextWrapper::Type type() const override;
bool makeCurrentImpl() override;
bool unmakeCurrentImpl() override;
unsigned glVersion() const override;
GCGLuint m_compositorTexture { 0 };
bool m_isCompositorTextureInitialized { false };
mutable unsigned m_version { 0 };
#if USE(COORDINATED_GRAPHICS) && USE(LIBEPOXY)
GCGLuint m_textureID { 0 };
GCGLuint m_compositorTextureID { 0 };
#endif
#if !USE(COORDINATED_GRAPHICS)
std::unique_ptr<TextureMapperGCGLPlatformLayer> m_texmapLayer;
friend class TextureMapperGCGLPlatformLayer;
#endif
};
} // namespace WebCore
#endif // ENABLE(WEBGL) && USE(TEXTURE_MAPPER)
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