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.
101 lines
2.8 KiB
C++
101 lines
2.8 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: 2019 NVIDIA Inc.
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef KWIN_EGL_STREAM_BACKEND_H
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#define KWIN_EGL_STREAM_BACKEND_H
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#include "abstract_egl_drm_backend.h"
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#include <KWaylandServer/surface_interface.h>
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#include <KWaylandServer/eglstream_controller_interface.h>
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#include <wayland-server-core.h>
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namespace KWin
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{
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class DrmOutput;
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class DrmBuffer;
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/**
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* @brief OpenGL Backend using Egl with an EGLDevice.
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*/
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class EglStreamBackend : public AbstractEglDrmBackend
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{
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Q_OBJECT
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public:
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EglStreamBackend(DrmBackend *b, DrmGpu *gpu);
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SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) 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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int screenCount() const override {
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return m_outputs.count();
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}
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void addOutput(DrmOutput *output) override;
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void removeOutput(DrmOutput *output) override;
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protected:
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void cleanupSurfaces() 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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struct StreamTexture
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{
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EGLStreamKHR stream;
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GLuint texture;
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};
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StreamTexture *lookupStreamTexture(KWaylandServer::SurfaceInterface *surface);
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void attachStreamConsumer(KWaylandServer::SurfaceInterface *surface,
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void *eglStream,
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wl_array *attribs);
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struct Output
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{
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DrmOutput *output = nullptr;
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DrmBuffer *buffer = nullptr;
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EGLSurface eglSurface = EGL_NO_SURFACE;
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EGLStreamKHR eglStream = EGL_NO_STREAM_KHR;
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};
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bool resetOutput(Output &output, DrmOutput *drmOutput);
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bool makeContextCurrent(const Output &output);
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bool presentOnOutput(Output &output);
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void cleanupOutput(const Output &output);
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QVector<Output> m_outputs;
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KWaylandServer::EglStreamControllerInterface *m_eglStreamControllerInterface;
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QHash<KWaylandServer::SurfaceInterface *, StreamTexture> m_streamTextures;
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friend class EglStreamTexture;
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};
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/**
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* @brief External texture bound to an EGLStreamKHR.
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*/
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class EglStreamTexture : public AbstractEglTexture
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{
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public:
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~EglStreamTexture() override;
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bool loadTexture(WindowPixmap *pixmap) override;
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void updateTexture(WindowPixmap *pixmap) override;
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private:
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EglStreamTexture(SceneOpenGLTexture *texture, EglStreamBackend *backend);
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bool acquireStreamFrame(EGLStreamKHR stream);
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void createFbo();
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void copyExternalTexture(GLuint tex);
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bool attachBuffer(KWaylandServer::BufferInterface *buffer);
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EglStreamBackend *m_backend;
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GLuint m_fbo, m_rbo;
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GLenum m_format;
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friend class EglStreamBackend;
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};
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} // namespace
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#endif
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