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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.
*/
#pragma once
#if ENABLE(WEBGL) && USE(GBM)
#include "GBMBufferSwapchain.h"
#include "GraphicsContextGLANGLE.h"
#include <wtf/HashMap.h>
typedef void *EGLImageKHR;
#if USE(NICOSIA)
namespace Nicosia {
class GCGLANGLELayer;
}
#endif
namespace WebCore {
class GraphicsContextGLGBM : public GraphicsContextGLANGLE {
public:
static RefPtr<GraphicsContextGLGBM> create(WebCore::GraphicsContextGLAttributes&&);
virtual ~GraphicsContextGLGBM();
// GraphicsContextGL overrides
RefPtr<GraphicsLayerContentsDisplayDelegate> layerContentsDisplayDelegate() override;
#if ENABLE(MEDIA_STREAM) || ENABLE(WEB_CODECS)
RefPtr<VideoFrame> paintCompositedResultsToVideoFrame() override;
#endif
#if ENABLE(VIDEO)
bool copyTextureFromMedia(MediaPlayer&, PlatformGLObject texture, GCGLenum target, GCGLint level, GCGLenum internalFormat, GCGLenum format, GCGLenum type, bool premultiplyAlpha, bool flipY) override;
#endif
RefPtr<PixelBuffer> readCompositedResults() final;
void setContextVisibility(bool) override;
void prepareForDisplay() override;
// GraphicsContextGLANGLE overrides
bool platformInitializeContext() override;
bool platformInitialize() override;
void prepareTexture() override;
bool reshapeDrawingBuffer() override;
struct Swapchain {
Swapchain() = default;
Swapchain(GCGLDisplay);
~Swapchain();
GCGLDisplay platformDisplay { nullptr };
RefPtr<GBMBufferSwapchain> swapchain;
RefPtr<GBMBufferSwapchain::Buffer> drawBO;
RefPtr<GBMBufferSwapchain::Buffer> displayBO;
// Cache for EGLImage objects corresponding to the buffers originating from the swapchain.
// The swapchain is regenerated (and these EGLImage objects destroyed) upon each buffer reshaping,
// so we should be fine without managing stale buffers and corresponding EGLImages (which shouldn't occur anyway).
HashMap<uint32_t, EGLImageKHR, WTF::DefaultHash<uint32_t>, WTF::UnsignedWithZeroKeyHashTraits<uint32_t>> images;
};
Swapchain& swapchain() { return m_swapchain; }
struct EGLExtensions {
bool KHR_image_base { false };
bool KHR_surfaceless_context { false };
bool EXT_image_dma_buf_import { false };
bool EXT_image_dma_buf_import_modifiers { false };
bool ANGLE_power_preference { false };
};
const EGLExtensions& eglExtensions() { return m_eglExtensions; }
protected:
explicit GraphicsContextGLGBM(WebCore::GraphicsContextGLAttributes&&);
private:
void allocateDrawBufferObject();
EGLExtensions m_eglExtensions;
Swapchain m_swapchain;
#if USE(NICOSIA)
friend class Nicosia::GCGLANGLELayer;
#endif
};
} // namespace WebCore
#endif // ENABLE(WEBGL) && USE(GBM)
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