/******************************************************************** KWin - the KDE window manager This file is part of the KDE project. SPDX-FileCopyrightText: 2019 NVIDIA Inc. SPDX-License-Identifier: GPL-2.0-or-later *********************************************************************/ #ifndef KWIN_EGL_STREAM_BACKEND_H #define KWIN_EGL_STREAM_BACKEND_H #include "abstract_egl_backend.h" #include #include #include namespace KWin { class DrmBackend; class DrmOutput; class DrmBuffer; /** * @brief OpenGL Backend using Egl with an EGLDevice. */ class EglStreamBackend : public AbstractEglBackend { Q_OBJECT public: EglStreamBackend(DrmBackend *b); ~EglStreamBackend() override; void screenGeometryChanged(const QSize &size) override; SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) override; QRegion prepareRenderingFrame() override; void endRenderingFrame(const QRegion &renderedRegion, const QRegion &damagedRegion) override; void endRenderingFrameForScreen(int screenId, const QRegion &damage, const QRegion &damagedRegion) override; bool usesOverlayWindow() const override; bool perScreenRendering() const override; QRegion prepareRenderingForScreen(int screenId) override; void init() override; protected: void present() override; void cleanupSurfaces() override; private: bool initializeEgl(); bool initBufferConfigs(); bool initRenderingContext(); struct StreamTexture { EGLStreamKHR stream; GLuint texture; }; StreamTexture *lookupStreamTexture(KWaylandServer::SurfaceInterface *surface); void attachStreamConsumer(KWaylandServer::SurfaceInterface *surface, void *eglStream, wl_array *attribs); struct Output { DrmOutput *output = nullptr; DrmBuffer *buffer = nullptr; EGLSurface eglSurface = EGL_NO_SURFACE; EGLStreamKHR eglStream = EGL_NO_STREAM_KHR; }; bool resetOutput(Output &output, DrmOutput *drmOutput); bool makeContextCurrent(const Output &output); void presentOnOutput(Output &output); void cleanupOutput(const Output &output); void createOutput(DrmOutput *output); DrmBackend *m_backend; QVector m_outputs; KWaylandServer::EglStreamControllerInterface *m_eglStreamControllerInterface; QHash m_streamTextures; friend class EglStreamTexture; }; /** * @brief External texture bound to an EGLStreamKHR. */ class EglStreamTexture : public AbstractEglTexture { public: ~EglStreamTexture() override; bool loadTexture(WindowPixmap *pixmap) override; void updateTexture(WindowPixmap *pixmap) override; private: EglStreamTexture(SceneOpenGLTexture *texture, EglStreamBackend *backend); bool acquireStreamFrame(EGLStreamKHR stream); void createFbo(); void copyExternalTexture(GLuint tex); bool attachBuffer(KWaylandServer::BufferInterface *buffer); EglStreamBackend *m_backend; GLuint m_fbo, m_rbo; GLenum m_format; friend class EglStreamBackend; }; } // namespace #endif