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platforms/x11: Don't monitor vblanks on the root window

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This makes scrolling in Firefox, which also monitors vblanks on the root
window, laggy.
This commit is contained in:
Vlad Zahorodnii 2021-01-28 14:03:24 +02:00
parent b338c4cb0e
commit ffc013292f
4 changed files with 76 additions and 16 deletions
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45
plugins/platforms/x11/standalone/omlsynccontrolvsyncmonitor.cpp
View file

@ -5,6 +5,7 @@
*/
#include "omlsynccontrolvsyncmonitor.h"
#include "glxconvenience.h"
#include "logging.h"
#include <QX11Info>
@ -38,30 +39,52 @@ OMLSyncControlVsyncMonitorHelper::OMLSyncControlVsyncMonitorHelper(QObject *pare
return;
}
Window rootWindow = DefaultRootWindow(m_display);
const int attribs[] = {
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
0
};
int count;
GLXFBConfig *configs = glXChooseFBConfig(m_display, DefaultScreen(m_display),
attribs, &count);
if (!count) {
GLXFBConfig config = chooseGlxFbConfig(m_display, attribs);
if (!config) {
qCDebug(KWIN_X11STANDALONE) << "Couldn't find any suitable FBConfig for vsync monitor";
return;
}
GLXFBConfig config = configs[0];
XFree(configs);
XVisualInfo *visualInfo = glXGetVisualFromFBConfig(m_display, config);
if (!visualInfo) {
return;
}
Visual *visual = visualInfo->visual;
const int depth = visualInfo->depth;
XFree(visualInfo);
Colormap colormap = XCreateColormap(m_display, rootWindow, visual, AllocNone);
XSetWindowAttributes attributes;
attributes.colormap = colormap;
m_dummyWindow = XCreateWindow(m_display, rootWindow, 0, 0, 1, 1, 0, depth,
InputOutput, visual, CWColormap, &attributes);
XFreeColormap(m_display, colormap);
if (!m_dummyWindow) {
qCDebug(KWIN_X11STANDALONE) << "Failed to create a dummy window for vsync monitor";
return;
}
m_drawable = glXCreateWindow(m_display, config, m_dummyWindow, nullptr);
if (!m_drawable) {
qCDebug(KWIN_X11STANDALONE) << "Failed to create GLXWindow for dummy window";
return;
}
m_localContext = glXCreateNewContext(m_display, config, GLX_RGBA_TYPE, 0, true);
if (!m_localContext) {
qCDebug(KWIN_X11STANDALONE) << "Failed to create opengl context for vsync monitor";
return;
}
m_drawable = DefaultRootWindow(m_display);
}
OMLSyncControlVsyncMonitorHelper::~OMLSyncControlVsyncMonitorHelper()
@ -69,6 +92,12 @@ OMLSyncControlVsyncMonitorHelper::~OMLSyncControlVsyncMonitorHelper()
if (m_localContext) {
glXDestroyContext(m_display, m_localContext);
}
if (m_drawable) {
glXDestroyWindow(m_display, m_drawable);
}
if (m_dummyWindow) {
XDestroyWindow(m_display, m_dummyWindow);
}
if (m_display) {
XCloseDisplay(m_display);
}

1
plugins/platforms/x11/standalone/omlsynccontrolvsyncmonitor.h
View file

@ -40,6 +40,7 @@ Q_SIGNALS:
private:
Display *m_display = nullptr;
Window m_dummyWindow = 0;
GLXContext m_localContext = 0;
GLXDrawable m_drawable = 0;
};

45
plugins/platforms/x11/standalone/sgivideosyncvsyncmonitor.cpp
View file

@ -5,6 +5,7 @@
*/
#include "sgivideosyncvsyncmonitor.h"
#include "glxconvenience.h"
#include "logging.h"
#include <QX11Info>
@ -38,30 +39,52 @@ SGIVideoSyncVsyncMonitorHelper::SGIVideoSyncVsyncMonitorHelper(QObject *parent)
return;
}
Window rootWindow = DefaultRootWindow(m_display);
const int attribs[] = {
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
0
};
int count;
GLXFBConfig *configs = glXChooseFBConfig(m_display, DefaultScreen(m_display),
attribs, &count);
if (!count) {
GLXFBConfig config = chooseGlxFbConfig(m_display, attribs);
if (!config) {
qCDebug(KWIN_X11STANDALONE) << "Couldn't find any suitable FBConfig for vsync monitor";
return;
}
GLXFBConfig config = configs[0];
XFree(configs);
XVisualInfo *visualInfo = glXGetVisualFromFBConfig(m_display, config);
if (!visualInfo) {
return;
}
Visual *visual = visualInfo->visual;
const int depth = visualInfo->depth;
XFree(visualInfo);
Colormap colormap = XCreateColormap(m_display, rootWindow, visual, AllocNone);
XSetWindowAttributes attributes;
attributes.colormap = colormap;
m_dummyWindow = XCreateWindow(m_display, rootWindow, 0, 0, 1, 1, 0, depth,
InputOutput, visual, CWColormap, &attributes);
XFreeColormap(m_display, colormap);
if (!m_dummyWindow) {
qCDebug(KWIN_X11STANDALONE) << "Failed to create a dummy window for vsync monitor";
return;
}
m_drawable = glXCreateWindow(m_display, config, m_dummyWindow, nullptr);
if (!m_drawable) {
qCDebug(KWIN_X11STANDALONE) << "Failed to create GLXWindow for dummy window";
return;
}
m_localContext = glXCreateNewContext(m_display, config, GLX_RGBA_TYPE, 0, true);
if (!m_localContext) {
qCDebug(KWIN_X11STANDALONE) << "Failed to create opengl context for vsync monitor";
return;
}
m_drawable = DefaultRootWindow(m_display);
}
SGIVideoSyncVsyncMonitorHelper::~SGIVideoSyncVsyncMonitorHelper()
@ -69,6 +92,12 @@ SGIVideoSyncVsyncMonitorHelper::~SGIVideoSyncVsyncMonitorHelper()
if (m_localContext) {
glXDestroyContext(m_display, m_localContext);
}
if (m_drawable) {
glXDestroyWindow(m_display, m_drawable);
}
if (m_dummyWindow) {
XDestroyWindow(m_display, m_dummyWindow);
}
if (m_display) {
XCloseDisplay(m_display);
}

1
plugins/platforms/x11/standalone/sgivideosyncvsyncmonitor.h
View file

@ -40,6 +40,7 @@ Q_SIGNALS:
private:
Display *m_display = nullptr;
Window m_dummyWindow = 0;
GLXContext m_localContext = 0;
GLXDrawable m_drawable = 0;
};