132 lines
3.7 KiB
C++
132 lines
3.7 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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Copyright (C) 2012 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef KWIN_GLX_BACKEND_H
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#define KWIN_GLX_BACKEND_H
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#include "scene_opengl.h"
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#include "x11eventfilter.h"
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#include <xcb/glx.h>
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#include <memory>
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namespace KWin
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{
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class FBConfigInfo
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{
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public:
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GLXFBConfig fbconfig;
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int bind_texture_format;
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int texture_targets;
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int y_inverted;
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int mipmap;
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};
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// ------------------------------------------------------------------
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class SwapEventFilter : public X11EventFilter
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{
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public:
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SwapEventFilter(xcb_drawable_t drawable, xcb_glx_drawable_t glxDrawable);
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bool event(xcb_generic_event_t *event) override;
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private:
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xcb_drawable_t m_drawable;
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xcb_glx_drawable_t m_glxDrawable;
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};
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/**
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* @brief OpenGL Backend using GLX over an X overlay window.
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**/
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class GlxBackend : public OpenGLBackend
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{
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public:
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GlxBackend();
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virtual ~GlxBackend();
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virtual void screenGeometryChanged(const QSize &size);
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virtual SceneOpenGL::TexturePrivate *createBackendTexture(SceneOpenGL::Texture *texture);
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virtual QRegion prepareRenderingFrame();
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virtual void endRenderingFrame(const QRegion &damage, const QRegion &damagedRegion);
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virtual bool makeCurrent() override;
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virtual void doneCurrent() override;
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virtual OverlayWindow* overlayWindow() override;
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virtual bool usesOverlayWindow() const override;
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protected:
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virtual void present();
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private:
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void init();
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bool initBuffer();
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void waitSync();
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bool initRenderingContext();
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bool initFbConfig();
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void initVisualDepthHashTable();
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void setSwapInterval(int interval);
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int visualDepth(xcb_visualid_t visual) const;
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FBConfigInfo *infoForVisual(xcb_visualid_t visual);
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/**
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* @brief The OverlayWindow used by this Backend.
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**/
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OverlayWindow *m_overlayWindow;
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Window window;
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GLXFBConfig fbconfig;
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GLXWindow glxWindow;
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GLXContext ctx;
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QHash<xcb_visualid_t, FBConfigInfo *> m_fbconfigHash;
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QHash<xcb_visualid_t, int> m_visualDepthHash;
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std::unique_ptr<SwapEventFilter> m_swapEventFilter;
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int m_bufferAge;
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bool m_haveMESACopySubBuffer = false;
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bool m_haveMESASwapControl = false;
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bool m_haveEXTSwapControl = false;
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bool m_haveSGISwapControl = false;
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bool m_haveINTELSwapEvent = false;
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bool haveSwapInterval = false;
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bool haveWaitSync = false;
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friend class GlxTexture;
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};
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/**
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* @brief Texture using an GLXPixmap.
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**/
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class GlxTexture : public SceneOpenGL::TexturePrivate
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{
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public:
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virtual ~GlxTexture();
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virtual void onDamage();
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virtual bool loadTexture(xcb_pixmap_t pix, const QSize &size, xcb_visualid_t visual) override;
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virtual OpenGLBackend *backend();
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private:
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friend class GlxBackend;
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GlxTexture(SceneOpenGL::Texture *texture, GlxBackend *backend);
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SceneOpenGL::Texture *q;
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GlxBackend *m_backend;
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GLXPixmap m_glxpixmap; // the glx pixmap the texture is bound to
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};
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} // namespace
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#endif // KWIN_GLX_BACKEND_H
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