ad0abdc812
Enable swap events and use them to defer rendering of the next frame until the last glXSwapBuffers() call has completed.
128 lines
3.6 KiB
C++
128 lines
3.6 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2012 Martin Gräßlin <mgraesslin@kde.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#ifndef KWIN_GLX_BACKEND_H
|
|
#define KWIN_GLX_BACKEND_H
|
|
#include "scene_opengl.h"
|
|
#include "x11eventfilter.h"
|
|
|
|
#include <memory>
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
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);
|
|
bool event(xcb_generic_event_t *event) override;
|
|
|
|
private:
|
|
xcb_drawable_t m_drawable;
|
|
};
|
|
|
|
|
|
/**
|
|
* @brief OpenGL Backend using GLX over an X overlay window.
|
|
**/
|
|
class GlxBackend : public OpenGLBackend
|
|
{
|
|
public:
|
|
GlxBackend();
|
|
virtual ~GlxBackend();
|
|
virtual void screenGeometryChanged(const QSize &size);
|
|
virtual SceneOpenGL::TexturePrivate *createBackendTexture(SceneOpenGL::Texture *texture);
|
|
virtual QRegion prepareRenderingFrame();
|
|
virtual void endRenderingFrame(const QRegion &damage, const QRegion &damagedRegion);
|
|
virtual bool makeCurrent() override;
|
|
virtual void doneCurrent() override;
|
|
virtual OverlayWindow* overlayWindow() override;
|
|
virtual bool usesOverlayWindow() const override;
|
|
|
|
protected:
|
|
virtual void present();
|
|
|
|
private:
|
|
void init();
|
|
bool initBuffer();
|
|
void waitSync();
|
|
bool initRenderingContext();
|
|
bool initFbConfig();
|
|
void initVisualDepthHashTable();
|
|
void setSwapInterval(int interval);
|
|
|
|
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<xcb_visualid_t, FBConfigInfo *> m_fbconfigHash;
|
|
QHash<xcb_visualid_t, int> m_visualDepthHash;
|
|
std::unique_ptr<SwapEventFilter> m_swapEventFilter;
|
|
int m_bufferAge;
|
|
bool m_haveMESACopySubBuffer;
|
|
bool m_haveMESASwapControl;
|
|
bool m_haveEXTSwapControl;
|
|
bool m_haveSGISwapControl;
|
|
bool m_haveINTELSwapEvent;
|
|
bool haveSwapInterval, haveWaitSync;
|
|
friend class GlxTexture;
|
|
};
|
|
|
|
/**
|
|
* @brief Texture using an GLXPixmap.
|
|
**/
|
|
class GlxTexture : public SceneOpenGL::TexturePrivate
|
|
{
|
|
public:
|
|
virtual ~GlxTexture();
|
|
virtual void onDamage();
|
|
virtual bool loadTexture(xcb_pixmap_t pix, const QSize &size, xcb_visualid_t visual) override;
|
|
virtual OpenGLBackend *backend();
|
|
|
|
private:
|
|
friend class GlxBackend;
|
|
GlxTexture(SceneOpenGL::Texture *texture, GlxBackend *backend);
|
|
SceneOpenGL::Texture *q;
|
|
GlxBackend *m_backend;
|
|
GLXPixmap m_glxpixmap; // the glx pixmap the texture is bound to
|
|
};
|
|
|
|
} // namespace
|
|
#endif // KWIN_GLX_BACKEND_H
|