/* KWin - the KDE window manager This file is part of the KDE project. SPDX-FileCopyrightText: 2012 Martin Gräßlin SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef KWIN_GLX_BACKEND_H #define KWIN_GLX_BACKEND_H #include "backend.h" #include "texture.h" #include "swap_profiler.h" #include "x11eventfilter.h" #include #include #include #include namespace KWin { // GLX_MESA_swap_interval using glXSwapIntervalMESA_func = int (*)(unsigned int interval); extern glXSwapIntervalMESA_func glXSwapIntervalMESA; class FBConfigInfo { public: GLXFBConfig fbconfig; int bind_texture_format; int texture_targets; int y_inverted; int mipmap; }; // ------------------------------------------------------------------ class SwapEventFilter : public X11EventFilter { public: SwapEventFilter(xcb_drawable_t drawable, xcb_glx_drawable_t glxDrawable); bool event(xcb_generic_event_t *event) override; private: xcb_drawable_t m_drawable; xcb_glx_drawable_t m_glxDrawable; }; /** * @brief OpenGL Backend using GLX over an X overlay window. */ class GlxBackend : public OpenGLBackend { public: GlxBackend(Display *display); ~GlxBackend() override; void screenGeometryChanged(const QSize &size) override; SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) override; QRegion beginFrame(int screenId) override; void endFrame(int screenId, const QRegion &damage, const QRegion &damagedRegion) override; bool makeCurrent() override; void doneCurrent() override; OverlayWindow* overlayWindow() const override; bool usesOverlayWindow() const override; void init() override; private: void present(const QRegion &damage); bool initBuffer(); bool checkVersion(); void initExtensions(); void waitSync(); bool initRenderingContext(); bool initFbConfig(); void initVisualDepthHashTable(); void setSwapInterval(int interval); Display *display() const { return m_x11Display; } int visualDepth(xcb_visualid_t visual) const; FBConfigInfo *infoForVisual(xcb_visualid_t visual); /** * @brief The OverlayWindow used by this Backend. */ OverlayWindow *m_overlayWindow; Window window; GLXFBConfig fbconfig; GLXWindow glxWindow; GLXContext ctx; QHash m_fbconfigHash; QHash m_visualDepthHash; std::unique_ptr m_swapEventFilter; int m_bufferAge; bool m_haveMESACopySubBuffer = false; bool m_haveMESASwapControl = false; bool m_haveEXTSwapControl = false; bool m_haveSGISwapControl = false; bool m_haveINTELSwapEvent = false; bool haveSwapInterval = false; bool haveWaitSync = false; Display *m_x11Display; SwapProfiler m_swapProfiler; friend class GlxTexture; }; /** * @brief Texture using an GLXPixmap. */ class GlxTexture : public SceneOpenGLTexturePrivate { public: ~GlxTexture() override; void onDamage() override; bool loadTexture(WindowPixmap *pixmap) override; OpenGLBackend *backend() override; private: friend class GlxBackend; GlxTexture(SceneOpenGLTexture *texture, GlxBackend *backend); bool loadTexture(xcb_pixmap_t pix, const QSize &size, xcb_visualid_t visual); Display *display() const { return m_backend->m_x11Display; } SceneOpenGLTexture *q; GlxBackend *m_backend; GLXPixmap m_glxpixmap; // the glx pixmap the texture is bound to }; } // namespace #endif // KWIN_GLX_BACKEND_H