a7a515a0af
b38bb416 introduced flicker when restarting compositing because the
DrmGpu::findWorkingCombination method usually creates new buffers for
the commit, without rendering into them. Instead of that, re-use
existing buffers where possible
121 lines
3.8 KiB
C++
121 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 "utils.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 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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class ShadowBuffer;
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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(AbstractOutput *output) override;
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void endFrame(AbstractOutput *output, const QRegion &damage, const QRegion &damagedRegion) override;
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void init() override;
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bool scanout(AbstractOutput *output, SurfaceItem *surfaceItem) override;
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QSharedPointer<GLTexture> textureForOutput(AbstractOutput *requestedOutput) const override;
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bool hasOutput(AbstractOutput *output) const override;
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bool addOutput(DrmAbstractOutput *output) override;
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void removeOutput(DrmAbstractOutput *output) override;
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bool swapBuffers(DrmAbstractOutput *output, const QRegion &dirty) override;
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bool exportFramebuffer(DrmAbstractOutput *output, void *data, const QSize &size, uint32_t stride) override;
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bool exportFramebufferAsDmabuf(DrmAbstractOutput *output, int *fds, int *strides, int *offsets, uint32_t *num_fds, uint32_t *format, uint64_t *modifier) override;
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QRegion beginFrameForSecondaryGpu(DrmAbstractOutput *output) override;
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bool directScanoutAllowed(AbstractOutput *output) const override;
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QSharedPointer<DrmBuffer> renderTestFrame(DrmAbstractOutput *output) override;
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uint32_t drmFormat() const override;
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protected:
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void cleanupSurfaces() override;
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void aboutToStartPainting(AbstractOutput *output, 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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DrmAbstractOutput *output = nullptr;
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struct RenderData {
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QSharedPointer<ShadowBuffer> shadowBuffer;
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QSharedPointer<GbmSurface> gbmSurface;
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int bufferAge = 0;
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DamageJournal damageJournal;
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// for secondary GPU import
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ImportMode importMode = ImportMode::Dmabuf;
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QSharedPointer<DumbSwapchain> importSwapchain;
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} old, current;
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KWaylandServer::SurfaceInterface *surfaceInterface = nullptr;
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};
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bool doesRenderFit(DrmAbstractOutput *output, const Output::RenderData &render);
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bool resetOutput(Output &output);
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bool makeContextCurrent(const Output::RenderData &output) const;
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void setViewport(const Output &output) const;
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void renderFramebufferToSurface(Output &output);
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QRegion prepareRenderingForOutput(Output &output);
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QSharedPointer<DrmBuffer> importFramebuffer(Output &output, const QRegion &dirty) const;
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QSharedPointer<DrmBuffer> endFrameWithBuffer(AbstractOutput *output, const QRegion &dirty);
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void updateBufferAge(Output &output, const QRegion &dirty);
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void cleanupRenderData(Output::RenderData &output);
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QMap<AbstractOutput *, Output> m_outputs;
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uint32_t m_gbmFormat;
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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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