kwin/src/backends/drm/egl_gbm_backend.h
Xaver Hugl 0ecfbb0d1c backends/drm: if multi-gpu copy fails, disable deep color
The format XRGB8888 is effectively universally supported. If everything
else fails, try to fall back to that
2022-01-14 15:44:53 +00:00

149 lines
4.5 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_backend.h"
#include "utils.h"
#include <kwinglutils.h>
#include <QPointer>
#include <QSharedPointer>
#include <optional>
struct gbm_surface;
struct gbm_bo;
namespace KWaylandServer
{
class SurfaceInterface;
}
namespace KWin
{
class AbstractOutput;
class DrmAbstractOutput;
class DrmBuffer;
class DrmGbmBuffer;
class DrmOutput;
class GbmSurface;
class GbmBuffer;
class DumbSwapchain;
class ShadowBuffer;
class DrmBackend;
class DrmGpu;
struct GbmFormat {
uint32_t drmFormat;
EGLint redSize;
EGLint greenSize;
EGLint blueSize;
EGLint alphaSize;
};
bool operator==(const GbmFormat &lhs, const GbmFormat &rhs);
/**
* @brief OpenGL Backend using Egl on a GBM surface.
*/
class EglGbmBackend : public AbstractEglBackend
{
Q_OBJECT
public:
EglGbmBackend(DrmBackend *drmBackend, DrmGpu *gpu);
~EglGbmBackend() override;
SurfaceTexture *createSurfaceTextureInternal(SurfacePixmapInternal *pixmap) override;
SurfaceTexture *createSurfaceTextureWayland(SurfacePixmapWayland *pixmap) override;
QRegion beginFrame(AbstractOutput *output) override;
void endFrame(AbstractOutput *output, const QRegion &renderedRegion, const QRegion &damagedRegion) override;
void init() override;
bool scanout(AbstractOutput *output, SurfaceItem *surfaceItem) override;
bool prefer10bpc() const override;
QSharedPointer<GLTexture> textureForOutput(AbstractOutput *requestedOutput) const override;
bool hasOutput(AbstractOutput *output) const;
bool swapBuffers(DrmAbstractOutput *output, const QRegion &dirty);
bool exportFramebuffer(DrmAbstractOutput *output, void *data, const QSize &size, uint32_t stride);
bool exportFramebufferAsDmabuf(DrmAbstractOutput *output, int *fds, int *strides, int *offsets, uint32_t *num_fds, uint32_t *format, uint64_t *modifier);
bool directScanoutAllowed(AbstractOutput *output) const override;
QSharedPointer<DrmBuffer> renderTestFrame(DrmAbstractOutput *output);
uint32_t drmFormat(DrmAbstractOutput *output) const;
DrmGpu *gpu() const;
protected:
void cleanupSurfaces() override;
void aboutToStartPainting(AbstractOutput *output, const QRegion &damage) override;
private:
bool initializeEgl();
bool initBufferConfigs();
bool initRenderingContext();
enum class ImportMode {
Dmabuf,
DumbBuffer
};
struct Output {
DrmAbstractOutput *output = nullptr;
bool forceXrgb8888 = false;
struct RenderData {
QSharedPointer<ShadowBuffer> shadowBuffer;
QSharedPointer<GbmSurface> gbmSurface;
int bufferAge = 0;
DamageJournal damageJournal;
GbmFormat format;
// for secondary GPU import
ImportMode importMode = ImportMode::Dmabuf;
QSharedPointer<DumbSwapchain> importSwapchain;
} old, current;
KWaylandServer::SurfaceInterface *scanoutSurface = nullptr;
struct {
QPointer<KWaylandServer::SurfaceInterface> surface;
QMap<uint32_t, QVector<uint64_t>> attemptedFormats;
} scanoutCandidate;
QPointer<KWaylandServer::SurfaceInterface> oldScanoutCandidate;
};
bool doesRenderFit(const Output &output, const Output::RenderData &render);
bool resetOutput(Output &output);
bool addOutput(DrmAbstractOutput *output);
void removeOutput(DrmAbstractOutput *output);
bool makeContextCurrent(const Output::RenderData &output) const;
void setViewport(const Output &output) const;
void renderFramebufferToSurface(Output &output);
QRegion prepareRenderingForOutput(Output &output);
QSharedPointer<DrmBuffer> importFramebuffer(Output &output, const QRegion &dirty) const;
QSharedPointer<DrmBuffer> endFrameWithBuffer(AbstractOutput *output, const QRegion &dirty);
void updateBufferAge(Output &output, const QRegion &dirty);
std::optional<GbmFormat> chooseFormat(Output &output) const;
void cleanupRenderData(Output::RenderData &output);
QMap<AbstractOutput *, Output> m_outputs;
DrmBackend *m_backend;
DrmGpu *m_gpu;
QVector<GbmFormat> m_formats;
QMap<uint32_t, EGLConfig> m_configs;
static EglGbmBackend *renderingBackend();
friend class EglGbmTexture;
};
} // namespace
#endif