diff options
Diffstat (limited to 'src/core/compositor/display_gl_output_surface.h')
| -rw-r--r-- | src/core/compositor/display_gl_output_surface.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/core/compositor/display_gl_output_surface.h b/src/core/compositor/display_gl_output_surface.h new file mode 100644 index 000000000..c42a6630a --- /dev/null +++ b/src/core/compositor/display_gl_output_surface.h @@ -0,0 +1,148 @@ +/**************************************************************************** +** +** Copyright (C) 2019 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtWebEngine module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef DISPLAY_GL_OUTPUT_SURFACE_H +#define DISPLAY_GL_OUTPUT_SURFACE_H + +#include "compositor_resource_fence.h" +#include "display_frame_sink.h" + +#include "components/viz/common/display/update_vsync_parameters_callback.h" +#include "components/viz/service/display/output_surface.h" +#include "components/viz/service/display_embedder/viz_process_context_provider.h" +#include "gpu/command_buffer/common/mailbox.h" +#include "gpu/command_buffer/common/sync_token.h" + +namespace viz { +class Display; +class SyntheticBeginFrameSource; +} // namespace viz + +namespace QtWebEngineCore { + +// NOTE: Some methods are defined in display_gl_output_surface_qsg.cpp due +// to conflicts between Qt & Chromium OpenGL APIs. +class DisplayGLOutputSurface final : public viz::OutputSurface, public DisplayProducer +{ +public: + DisplayGLOutputSurface( + scoped_refptr<viz::VizProcessContextProvider> contextProvider, + viz::UpdateVSyncParametersCallback callback); + ~DisplayGLOutputSurface() override; + + // Overridden from viz::OutputSurface. + void BindToClient(viz::OutputSurfaceClient *client) override; + void EnsureBackbuffer() override; + void DiscardBackbuffer() override; + void BindFramebuffer() override; + void SetDrawRectangle(const gfx::Rect &drawRect) override; + viz::OverlayCandidateValidator *GetOverlayCandidateValidator() const override; + bool IsDisplayedAsOverlayPlane() const override; + unsigned GetOverlayTextureId() const override; + gfx::BufferFormat GetOverlayBufferFormat() const override; + void Reshape(const gfx::Size &size, + float devicePixelRatio, + const gfx::ColorSpace &colorSpace, + bool hasAlpha, + bool useStencil) override; + bool HasExternalStencilTest() const override; + void ApplyExternalStencil() override; + uint32_t GetFramebufferCopyTextureFormat() override; + void SwapBuffers(viz::OutputSurfaceFrame frame) override; + unsigned UpdateGpuFence() override; + + // Overridden from DisplayProducer. + QSGNode *updatePaintNode(QSGNode *oldNode, RenderWidgetHostViewQtDelegate *delegate) override; + +private: + struct Shape + { + gfx::Size sizeInPixels; + float devicePixelRatio; + gfx::ColorSpace colorSpace; + bool hasAlpha; + + bool operator==(const Shape &that) const + { + return (sizeInPixels == that.sizeInPixels && + devicePixelRatio == that.devicePixelRatio && + colorSpace == that.colorSpace && + hasAlpha == that.hasAlpha); + } + bool operator!=(const Shape &that) const { return !(*this == that); } + }; + + struct Buffer + { + DisplayGLOutputSurface *parent; + Shape shape; + uint32_t clientId = 0; + uint32_t serviceId = 0; + scoped_refptr<CompositorResourceFence> fence; + + Buffer(DisplayGLOutputSurface *parent) : parent(parent) {} + ~Buffer() { parent->deleteBufferResources(this); } + }; + + class Texture; + + void swapBuffersOnGpuThread(unsigned int id, std::unique_ptr<gl::GLFence> fence); + void swapBuffersOnVizThread(); + + std::unique_ptr<Buffer> makeBuffer(const Shape &shape); + void deleteBufferResources(Buffer *buffer); + void attachBuffer(); + void detachBuffer(); + + gpu::InProcessCommandBuffer *const m_commandBuffer; + gpu::gles2::GLES2Interface *const m_gl; + mutable QMutex m_mutex; + uint32_t m_fboId = 0; + viz::Display *m_display = nullptr; + scoped_refptr<DisplayFrameSink> m_sink; + Shape m_currentShape; + std::unique_ptr<Buffer> m_backBuffer; + std::unique_ptr<Buffer> m_middleBuffer; + std::unique_ptr<Buffer> m_frontBuffer; + scoped_refptr<base::SingleThreadTaskRunner> m_taskRunner; +}; + +} // namespace QtWebEngineCore + +#endif // !DISPLAY_GL_OUTPUT_SURFACE_H |