ee3515680a
If there is a pending frame, the RenderLoop will delay all schedule repaint requests to the next vblank event. This means that the render loop needs to be notified when a frame has been presented or failed. At the moment, the RenderLoop is notified only about successfully presented frames. If some frame fails, no repaints will be scheduled on that output. In order to make frame scheduling robust, the RenderLoop has to be notified if a frame has failed.
124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
/*
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
|
|
|
|
SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
#ifndef KWIN_EGL_GBM_BACKEND_H
|
|
#define KWIN_EGL_GBM_BACKEND_H
|
|
#include "abstract_egl_drm_backend.h"
|
|
|
|
#include <memory>
|
|
|
|
struct gbm_surface;
|
|
struct gbm_bo;
|
|
|
|
namespace KWin
|
|
{
|
|
class AbstractOutput;
|
|
class DrmBuffer;
|
|
class DrmSurfaceBuffer;
|
|
class DrmOutput;
|
|
class GbmSurface;
|
|
|
|
/**
|
|
* @brief OpenGL Backend using Egl on a GBM surface.
|
|
*/
|
|
class EglGbmBackend : public AbstractEglDrmBackend
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
EglGbmBackend(DrmBackend *drmBackend, DrmGpu *gpu);
|
|
|
|
SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) override;
|
|
QRegion beginFrame(int screenId) override;
|
|
void endFrame(int screenId, const QRegion &damage, const QRegion &damagedRegion) override;
|
|
void init() override;
|
|
|
|
QSharedPointer<GLTexture> textureForOutput(AbstractOutput *requestedOutput) const override;
|
|
|
|
int screenCount() const override {
|
|
return m_outputs.count();
|
|
}
|
|
|
|
void addOutput(DrmOutput *output) override;
|
|
void removeOutput(DrmOutput *output) override;
|
|
int getDmabufForSecondaryGpuOutput(AbstractOutput *output, uint32_t *format, uint32_t *stride) override;
|
|
void cleanupDmabufForSecondaryGpuOutput(AbstractOutput *output) override;
|
|
QRegion beginFrameForSecondaryGpu(AbstractOutput *output) override;
|
|
|
|
protected:
|
|
void cleanupSurfaces() override;
|
|
void aboutToStartPainting(int screenId, const QRegion &damage) override;
|
|
|
|
private:
|
|
bool initializeEgl();
|
|
bool initBufferConfigs();
|
|
bool initRenderingContext();
|
|
|
|
struct Output {
|
|
DrmOutput *output = nullptr;
|
|
DrmSurfaceBuffer *buffer = nullptr;
|
|
std::shared_ptr<GbmSurface> gbmSurface;
|
|
EGLSurface eglSurface = EGL_NO_SURFACE;
|
|
int bufferAge = 0;
|
|
/**
|
|
* @brief The damage history for the past 10 frames.
|
|
*/
|
|
QList<QRegion> damageHistory;
|
|
|
|
struct {
|
|
GLuint framebuffer = 0;
|
|
GLuint texture = 0;
|
|
std::shared_ptr<GLVertexBuffer> vbo;
|
|
} render;
|
|
|
|
bool onSecondaryGPU = false;
|
|
int dmabufFd = 0;
|
|
gbm_bo *secondaryGbmBo = nullptr;
|
|
gbm_bo *importedGbmBo = nullptr;
|
|
};
|
|
|
|
bool resetOutput(Output &output, DrmOutput *drmOutput);
|
|
std::shared_ptr<GbmSurface> createGbmSurface(const QSize &size, const bool linear) const;
|
|
EGLSurface createEglSurface(std::shared_ptr<GbmSurface> gbmSurface) const;
|
|
|
|
bool makeContextCurrent(const Output &output) const;
|
|
void setViewport(const Output &output) const;
|
|
|
|
bool resetFramebuffer(Output &output);
|
|
void initRenderTarget(Output &output);
|
|
|
|
void prepareRenderFramebuffer(const Output &output) const;
|
|
void renderFramebufferToSurface(Output &output);
|
|
QRegion prepareRenderingForOutput(const Output &output) const;
|
|
|
|
bool presentOnOutput(Output &output, const QRegion &damagedRegion);
|
|
|
|
void cleanupOutput(Output &output);
|
|
void cleanupFramebuffer(Output &output);
|
|
|
|
QVector<Output> m_outputs;
|
|
QVector<Output> m_secondaryGpuOutputs;
|
|
|
|
friend class EglGbmTexture;
|
|
};
|
|
|
|
/**
|
|
* @brief Texture using an EGLImageKHR.
|
|
*/
|
|
class EglGbmTexture : public AbstractEglTexture
|
|
{
|
|
public:
|
|
~EglGbmTexture() override;
|
|
|
|
private:
|
|
friend class EglGbmBackend;
|
|
EglGbmTexture(SceneOpenGLTexture *texture, EglGbmBackend *backend);
|
|
};
|
|
|
|
} // namespace
|
|
|
|
#endif
|