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/*
* Copyright (C) 2020 Igalia S.L. All rights reserved.
* Copyright (C) 2021-2023 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. 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.
*/
#pragma once
#if ENABLE(WEBXR)
#include "GraphicsContextGL.h"
#include "GraphicsTypesGL.h"
#include "PlatformXR.h"
#include "WebXRLayer.h"
#include <wtf/Ref.h>
#include <wtf/RetainPtr.h>
namespace WebCore {
class IntSize;
class WebGLFramebuffer;
class WebGLRenderingContextBase;
struct XRWebGLLayerInit;
class WebXROpaqueFramebuffer {
public:
struct Attributes {
bool alpha { true };
bool antialias { true };
bool depth { true };
bool stencil { false };
};
static std::unique_ptr<WebXROpaqueFramebuffer> create(PlatformXR::LayerHandle, WebGLRenderingContextBase&, Attributes&&, IntSize);
~WebXROpaqueFramebuffer();
PlatformXR::LayerHandle handle() const { return m_handle; }
const WebGLFramebuffer& framebuffer() const { return m_framebuffer.get(); }
GCGLint width() const { return m_framebufferSize.width(); }
GCGLint height() const { return m_framebufferSize.height(); }
void startFrame(const PlatformXR::Device::FrameData::LayerData&);
void endFrame();
private:
WebXROpaqueFramebuffer(PlatformXR::LayerHandle, Ref<WebGLFramebuffer>&&, WebGLRenderingContextBase&, Attributes&&, IntSize);
bool setupFramebuffer();
PlatformGLObject allocateRenderbufferStorage(GraphicsContextGL&, GCGLsizei, GCGLenum, IntSize);
PlatformGLObject allocateColorStorage(GraphicsContextGL&, GCGLsizei, IntSize);
PlatformGLObject allocateDepthStencilStorage(GraphicsContextGL&, GCGLsizei, IntSize);
void bindColorBuffer(GraphicsContextGL&, PlatformGLObject);
void bindDepthStencilBuffer(GraphicsContextGL&, PlatformGLObject);
PlatformXR::LayerHandle m_handle;
Ref<WebGLFramebuffer> m_framebuffer;
WebGLRenderingContextBase& m_context;
Attributes m_attributes;
IntSize m_framebufferSize;
GCGLOwnedRenderbuffer m_depthStencilBuffer;
GCGLOwnedRenderbuffer m_multisampleColorBuffer;
GCGLOwnedRenderbuffer m_multisampleDepthStencilBuffer;
GCGLOwnedFramebuffer m_resolvedFBO;
#if USE(IOSURFACE_FOR_XR_LAYER_DATA) || USE(MTLTEXTURE_FOR_XR_LAYER_DATA)
GCGLOwnedTexture m_colorTexture;
GCEGLImage m_colorImage { };
GCEGLImage m_depthStencilImage { };
#else
PlatformGLObject m_colorTexture;
#endif
#if USE(MTLSHAREDEVENT_FOR_XR_FRAME_COMPLETION)
GraphicsContextGL::ExternalEGLSyncEvent m_completionSyncEvent;
#endif
};
} // namespace WebCore
#endif // ENABLE(WEBXR)
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