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/*
* Copyright (C) 2022 Metrological Group B.V.
* Copyright (C) 2022 Igalia S.L.
*
* 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 "RemoteGraphicsContextGLProxy.h"
#include "RemoteRenderingBackendProxy.h"
#if ENABLE(GPU_PROCESS) && ENABLE(WEBGL) && USE(GBM)
// This is a standalone check of additional requirements in this implementation,
// avoiding having to place an overwhelming amount of build guards over the rest of the code.
#if !USE(NICOSIA) || !USE(TEXTURE_MAPPER_DMABUF)
#error RemoteGraphicsContextGLProxyGBM implementation also depends on USE_NICOSIA and USE_TEXTURE_MAPPER_DMABUF
#endif
#include "WebProcess.h"
#include <WebCore/DMABufObject.h>
#include <WebCore/GraphicsLayerContentsDisplayDelegate.h>
#include <WebCore/NicosiaContentLayerTextureMapperImpl.h>
#include <WebCore/TextureMapperPlatformLayerProxyDMABuf.h>
namespace WebKit {
class NicosiaDisplayDelegate final : public WebCore::GraphicsLayerContentsDisplayDelegate, public Nicosia::ContentLayerTextureMapperImpl::Client {
public:
explicit NicosiaDisplayDelegate(bool isOpaque);
virtual ~NicosiaDisplayDelegate();
void present(WebCore::DMABufObject&& dmabufObject)
{
m_pending = WTFMove(dmabufObject);
}
private:
// WebCore::GraphicsLayerContentsDisplayDelegate
Nicosia::PlatformLayer* platformLayer() const final;
// Nicosia::ContentLayerTextureMapperImpl::Client
void swapBuffersIfNeeded() final;
bool m_isOpaque { false };
RefPtr<Nicosia::ContentLayer> m_contentLayer;
WebCore::DMABufObject m_pending { WebCore::DMABufObject(0) };
};
NicosiaDisplayDelegate::NicosiaDisplayDelegate(bool isOpaque)
: m_isOpaque(isOpaque)
{
m_contentLayer = Nicosia::ContentLayer::create(Nicosia::ContentLayerTextureMapperImpl::createFactory(*this, adoptRef(*new WebCore::TextureMapperPlatformLayerProxyDMABuf)));
}
NicosiaDisplayDelegate::~NicosiaDisplayDelegate()
{ }
Nicosia::PlatformLayer* NicosiaDisplayDelegate::platformLayer() const
{
return m_contentLayer.get();
}
void NicosiaDisplayDelegate::swapBuffersIfNeeded()
{
auto& proxy = downcast<Nicosia::ContentLayerTextureMapperImpl>(m_contentLayer->impl()).proxy();
ASSERT(is<WebCore::TextureMapperPlatformLayerProxyDMABuf>(proxy));
if (!!m_pending.handle) {
Locker locker { proxy.lock() };
WebCore::TextureMapperGL::Flags flags = WebCore::TextureMapperGL::ShouldFlipTexture;
if (!m_isOpaque)
flags |= WebCore::TextureMapperGL::ShouldBlend;
downcast<WebCore::TextureMapperPlatformLayerProxyDMABuf>(proxy).pushDMABuf(WTFMove(m_pending),
[](auto&& object) { return object; }, flags);
}
m_pending = WebCore::DMABufObject(0);
}
class RemoteGraphicsContextGLProxyGBM final : public RemoteGraphicsContextGLProxy {
public:
RemoteGraphicsContextGLProxyGBM(IPC::Connection&, Ref<IPC::StreamClientConnection>, const WebCore::GraphicsContextGLAttributes&, Ref<RemoteVideoFrameObjectHeapProxy>&&);
virtual ~RemoteGraphicsContextGLProxyGBM() = default;
private:
// WebCore::GraphicsContextGL
RefPtr<WebCore::GraphicsLayerContentsDisplayDelegate> layerContentsDisplayDelegate() final;
void prepareForDisplay() final;
Ref<NicosiaDisplayDelegate> m_layerContentsDisplayDelegate;
};
RemoteGraphicsContextGLProxyGBM::RemoteGraphicsContextGLProxyGBM(IPC::Connection& connection, Ref<IPC::StreamClientConnection> streamConnection, const WebCore::GraphicsContextGLAttributes& attributes, Ref<RemoteVideoFrameObjectHeapProxy>&& videoFrameObjectHeapProxy)
: RemoteGraphicsContextGLProxy(connection, WTFMove(streamConnection), attributes, WTFMove(videoFrameObjectHeapProxy))
, m_layerContentsDisplayDelegate(adoptRef(*new NicosiaDisplayDelegate(!attributes.alpha)))
{ }
RefPtr<WebCore::GraphicsLayerContentsDisplayDelegate> RemoteGraphicsContextGLProxyGBM::layerContentsDisplayDelegate()
{
return m_layerContentsDisplayDelegate.copyRef();
}
void RemoteGraphicsContextGLProxyGBM::prepareForDisplay()
{
if (isContextLost())
return;
auto sendResult = sendSync(Messages::RemoteGraphicsContextGL::PrepareForDisplay());
if (!sendResult) {
markContextLost();
return;
}
auto& [dmabufObject] = sendResult.reply();
m_layerContentsDisplayDelegate->present(WTFMove(dmabufObject));
markLayerComposited();
}
Ref<RemoteGraphicsContextGLProxy> RemoteGraphicsContextGLProxy::platformCreate(IPC::Connection& connection, Ref<IPC::StreamClientConnection> streamConnection, const WebCore::GraphicsContextGLAttributes& attributes, Ref<RemoteVideoFrameObjectHeapProxy>&& videoFrameObjectHeapProxy)
{
return adoptRef(*new RemoteGraphicsContextGLProxyGBM(connection, WTFMove(streamConnection), attributes, WTFMove(videoFrameObjectHeapProxy)));
}
} // namespace WebKit
#endif // ENABLE(GPU_PROCESS) && ENABLE(WEBGL) && USE(GBM)
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