Differential D23511 Diff 68578 plugins/platforms/x11/standalone/glxbackend.cpp

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plugins/platforms/x11/standalone/glxbackend.cpp

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108GlxBackend::GlxBackend(Display *display) 108​GlxBackend::GlxBackend(Display *display)
109 : OpenGLBackend() 109​ : OpenGLBackend()
110 , m_overlayWindow(kwinApp()->platform()->createOverlayWindow()) 110​ , m_overlayWindow(kwinApp()->platform()->createOverlayWindow())
111 , window(None) 111​ , window(None)
112 , fbconfig(nullptr) 112​ , fbconfig(nullptr)
113 , glxWindow(None) 113​ , glxWindow(None)
114 , ctx(nullptr) 114​ , ctx(nullptr)
115 , m_bufferAge(0) 115​ , m_bufferAge(0)
116 , haveSwapInterval(false) ​
117 , m_x11Display(display) 116​ , m_x11Display(display)
118{ 117​{
119 // Ensures calls to glXSwapBuffers will always block until the next 118​ // Ensures calls to glXSwapBuffers will always block until the next
120 // retrace when using the proprietary NVIDIA driver. This must be 119​ // retrace when using the proprietary NVIDIA driver. This must be
121 // set before libGL.so is loaded. 120​ // set before libGL.so is loaded.
122 setenv("__GL_MaxFramesAllowed", "1", true); 121​ setenv("__GL_MaxFramesAllowed", "1", true);
123 122​
124 // Force initialization of GLX integration in the Qt's xcb backend 123​ // Force initialization of GLX integration in the Qt's xcb backend
▲ Show 20 Lines • Show All 91 Lines • ▼ Show 20 Line(s)173{
216 m_haveINTELSwapEvent = hasExtension(QByteArrayLiteral("GLX_INTEL_swap_event")) 215​ m_haveINTELSwapEvent = hasExtension(QByteArrayLiteral("GLX_INTEL_swap_event"))
217 && qgetenv("KWIN_USE_INTEL_SWAP_EVENT") == QByteArrayLiteral("1"); 216​ && qgetenv("KWIN_USE_INTEL_SWAP_EVENT") == QByteArrayLiteral("1");
218 217​
219 if (m_haveINTELSwapEvent) { 218​ if (m_haveINTELSwapEvent) {
220 m_swapEventFilter = std::make_unique<SwapEventFilter>(window, glxWindow); 219​ m_swapEventFilter = std::make_unique<SwapEventFilter>(window, glxWindow);
221 glXSelectEvent(display(), glxWindow, GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK); 220​ glXSelectEvent(display(), glxWindow, GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK);
222 } 221​ }
223 222​
224 haveSwapInterval = m_haveMESASwapControl || m_haveEXTSwapControl; ​
225 ​
226 setSupportsBufferAge(false); 223​ setSupportsBufferAge(false);
227 224​
228 if (hasExtension(QByteArrayLiteral("GLX_EXT_buffer_age"))) { 225​ if (hasExtension(QByteArrayLiteral("GLX_EXT_buffer_age"))) {
229 const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE"); 226​ const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE");
230 227​
231 if (useBufferAge != "0") 228​ if (useBufferAge != "0")
232 setSupportsBufferAge(true); 229​ setSupportsBufferAge(true);
233 } 230​ }
234 231​
235 setSyncsToVBlank(false); ​
236 setBlocksForRetrace(true); 232​ setBlocksForRetrace(true);
237 const bool wantSync = options->glPreferBufferSwap() != Options::NoSwapEncourage; 233​
238 if (wantSync && glXIsDirect(display(), ctx)) { 234​ if (m_haveEXTSwapControl) {
239 if (haveSwapInterval) { // glXSwapInterval is preferred being more reliable 235​ glXSwapIntervalEXT(display(), glxWindow, 1);
240 setSwapInterval(1); 236​ } else if (m_haveMESASwapControl) {
241 setSyncsToVBlank(true); 237​ glXSwapIntervalMESA(1);
242 } else { 238​ } else {
243 qCWarning(KWIN_X11STANDALONE) << "NO VSYNC! glSwapInterval is not supported"; 239​ qCWarning(KWIN_X11STANDALONE) << "NO VSYNC! glSwapInterval is not supported";
244 } 240​ }
245 } else { 241​
246 // disable v-sync (if possible) ​
247 setSwapInterval(0); ​
248 } ​
249 if (glPlatform->isVirtualBox()) { 242​ if (glPlatform->isVirtualBox()) {
250 // VirtualBox does not support glxQueryDrawable 243​ // VirtualBox does not support glxQueryDrawable
251 // this should actually be in kwinglutils_funcs, but QueryDrawable seems not to be provided by an extension 244​ // this should actually be in kwinglutils_funcs, but QueryDrawable seems not to be provided by an extension
252 // and the GLPlatform has not been initialized at the moment when initGLX() is called. 245​ // and the GLPlatform has not been initialized at the moment when initGLX() is called.
253 glXQueryDrawable = nullptr; 246​ glXQueryDrawable = nullptr;
254 } 247​ }
255 248​
256 setIsDirectRendering(bool(glXIsDirect(display(), ctx))); 249​ setIsDirectRendering(bool(glXIsDirect(display(), ctx)));
▲ Show 20 Lines • Show All 410 Lines • ▼ Show 20 Line(s)655 if (info->fbconfig) {
667 glXGetFBConfigAttrib(display(), info->fbconfig, GLX_VISUAL_ID, &visual_id); 660​ glXGetFBConfigAttrib(display(), info->fbconfig, GLX_VISUAL_ID, &visual_id);
668 661​
669 qCDebug(KWIN_X11STANDALONE).nospace() << "Using FBConfig 0x" << hex << fbc_id << " for visual 0x" << hex << visual_id; 662​ qCDebug(KWIN_X11STANDALONE).nospace() << "Using FBConfig 0x" << hex << fbc_id << " for visual 0x" << hex << visual_id;
670 } 663​ }
671 664​
672 return info; 665​ return info;
673} 666​}
674 667​
675void GlxBackend::setSwapInterval(int interval) ​
676{ ​
677 if (m_haveEXTSwapControl) ​
678 glXSwapIntervalEXT(display(), glxWindow, interval); ​
679 else if (m_haveMESASwapControl) ​
680 glXSwapIntervalMESA(interval); ​
681} ​
682 ​
683void GlxBackend::present() 668​void GlxBackend::present()
684{ 669​{
685 if (lastDamage().isEmpty()) 670​ if (lastDamage().isEmpty())
686 return; 671​ return;
687 672​
688 const QSize &screenSize = screens()->size(); 673​ const QSize &screenSize = screens()->size();
689 const QRegion displayRegion(0, 0, screenSize.width(), screenSize.height()); 674​ const QRegion displayRegion(0, 0, screenSize.width(), screenSize.height());
690 const bool fullRepaint = supportsBufferAge() || (lastDamage() == displayRegion); 675​ const bool fullRepaint = supportsBufferAge() || (lastDamage() == displayRegion);
691 676​
692 if (fullRepaint) { 677​ if (fullRepaint) {
693 if (m_haveINTELSwapEvent) 678​ if (m_haveINTELSwapEvent)
694 Compositor::self()->aboutToSwapBuffers(); 679​ Compositor::self()->aboutToSwapBuffers();
695 680​
696 if (haveSwapInterval) { ​
697 glXSwapBuffers(display(), glxWindow); ​
698 } else { ​
699 glXSwapBuffers(display(), glxWindow); 681​ glXSwapBuffers(display(), glxWindow);
700 } 682​
701 if (supportsBufferAge()) { 683​ if (supportsBufferAge()) {
702 glXQueryDrawable(display(), glxWindow, GLX_BACK_BUFFER_AGE_EXT, (GLuint *) &m_bufferAge); 684​ glXQueryDrawable(display(), glxWindow, GLX_BACK_BUFFER_AGE_EXT, (GLuint *) &m_bufferAge);
703 } 685​ }
704 } else if (m_haveMESACopySubBuffer) { 686​ } else if (m_haveMESACopySubBuffer) {
705 for (const QRect &r : lastDamage()) { 687​ for (const QRect &r : lastDamage()) {
706 // convert to OpenGL coordinates 688​ // convert to OpenGL coordinates
707 int y = screenSize.height() - r.y() - r.height(); 689​ int y = screenSize.height() - r.y() - r.height();
708 glXCopySubBufferMESA(display(), glxWindow, r.x(), y, r.width(), r.height()); 690​ glXCopySubBufferMESA(display(), glxWindow, r.x(), y, r.width(), r.height());
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