133 lines
3.8 KiB
C++
133 lines
3.8 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef KWIN_EGL_GBM_BACKEND_H
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#define KWIN_EGL_GBM_BACKEND_H
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#include "abstract_egl_drm_backend.h"
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#include <kwinglutils.h>
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#include <QSharedPointer>
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struct gbm_surface;
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struct gbm_bo;
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namespace KWaylandServer
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{
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class BufferInterface;
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class SurfaceInterface;
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}
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namespace KWin
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{
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class AbstractOutput;
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class DrmBuffer;
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class DrmGbmBuffer;
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class DrmOutput;
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class GbmSurface;
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class GbmBuffer;
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class DumbSwapchain;
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/**
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* @brief OpenGL Backend using Egl on a GBM surface.
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*/
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class EglGbmBackend : public AbstractEglDrmBackend
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{
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Q_OBJECT
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public:
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EglGbmBackend(DrmBackend *drmBackend, DrmGpu *gpu);
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~EglGbmBackend() override;
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PlatformSurfaceTexture *createPlatformSurfaceTextureInternal(SurfacePixmapInternal *pixmap) override;
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PlatformSurfaceTexture *createPlatformSurfaceTextureWayland(SurfacePixmapWayland *pixmap) override;
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QRegion beginFrame(int screenId) override;
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void endFrame(int screenId, const QRegion &damage, const QRegion &damagedRegion) override;
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void init() override;
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bool scanout(int screenId, SurfaceItem *surfaceItem) override;
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QSharedPointer<GLTexture> textureForOutput(AbstractOutput *requestedOutput) const override;
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int screenCount() const override {
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return m_outputs.count();
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}
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bool addOutput(DrmOutput *output) override;
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void removeOutput(DrmOutput *output) override;
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bool swapBuffers(DrmOutput *output) override;
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bool exportFramebuffer(DrmOutput *output, void *data, const QSize &size, uint32_t stride) override;
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int exportFramebufferAsDmabuf(DrmOutput *output, uint32_t *format, uint32_t *stride) override;
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QRegion beginFrameForSecondaryGpu(DrmOutput *output) override;
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bool directScanoutAllowed(int screen) const override;
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protected:
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void cleanupSurfaces() override;
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void aboutToStartPainting(int screenId, const QRegion &damage) override;
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private:
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bool initializeEgl();
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bool initBufferConfigs();
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bool initRenderingContext();
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enum class ImportMode {
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Dmabuf,
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DumbBuffer
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};
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struct Output {
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DrmOutput *output = nullptr;
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QSharedPointer<DrmBuffer> buffer;
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QSharedPointer<GbmBuffer> secondaryBuffer;
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QSharedPointer<GbmSurface> gbmSurface;
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EGLSurface eglSurface = EGL_NO_SURFACE;
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int bufferAge = 0;
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/**
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* @brief The damage history for the past 10 frames.
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*/
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QList<QRegion> damageHistory;
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struct {
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GLuint framebuffer = 0;
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GLuint texture = 0;
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QSharedPointer<GLVertexBuffer> vbo;
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} render;
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KWaylandServer::SurfaceInterface *surfaceInterface = nullptr;
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ImportMode importMode = ImportMode::Dmabuf;
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QSharedPointer<DumbSwapchain> importSwapchain;
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};
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bool resetOutput(Output &output, DrmOutput *drmOutput);
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EGLSurface createEglSurface(QSharedPointer<GbmSurface> gbmSurface) const;
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bool makeContextCurrent(const Output &output) const;
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void setViewport(const Output &output) const;
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bool resetFramebuffer(Output &output);
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void initRenderTarget(Output &output);
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void prepareRenderFramebuffer(const Output &output) const;
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void renderFramebufferToSurface(Output &output);
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QRegion prepareRenderingForOutput(Output &output) const;
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void importFramebuffer(Output &output) const;
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bool presentOnOutput(Output &output, const QRegion &damagedRegion);
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bool directScanoutActive(const Output &output);
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void cleanupOutput(Output &output);
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void cleanupFramebuffer(Output &output);
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QVector<Output> m_outputs;
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QVector<Output> m_secondaryGpuOutputs;
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friend class EglGbmTexture;
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};
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} // namespace
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#endif
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