107 lines
3.2 KiB
C++
107 lines
3.2 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_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 DrmBackend;
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class DrmOutput;
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class DrmBuffer;
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class DrmGpu;
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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 AbstractEglBackend
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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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~EglStreamBackend() override;
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void screenGeometryChanged(const QSize &size) override;
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SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) override;
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QRegion prepareRenderingFrame() override;
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void endRenderingFrame(const QRegion &renderedRegion, const QRegion &damagedRegion) override;
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void endRenderingFrameForScreen(int screenId, const QRegion &damage, const QRegion &damagedRegion) override;
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bool usesOverlayWindow() const override;
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bool perScreenRendering() const override;
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QRegion prepareRenderingForScreen(int screenId) override;
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void init() override;
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protected:
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void present() override;
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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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void presentOnOutput(Output &output);
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void cleanupOutput(const Output &output);
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void createOutput(DrmOutput *output);
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DrmBackend *m_backend;
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DrmGpu *m_gpu;
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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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