Changeset View
Changeset View
Standalone View
Standalone View
plugins/platforms/x11/standalone/glxbackend.cpp
| Show First 20 Lines • Show All 109 Lines • ▼ Show 20 Line(s) | 108 | GlxBackend::GlxBackend(Display *display) | |||
|---|---|---|---|---|---|
| 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 | , m_x11Display(display) | 116 | , m_x11Display(display) | ||
| 117 | { | 117 | { | ||
| 118 | // Ensures calls to glXSwapBuffers will always block until the next | | |||
| 119 | // retrace when using the proprietary NVIDIA driver. This must be | | |||
| 120 | // set before libGL.so is loaded. | | |||
| 121 | setenv("__GL_MaxFramesAllowed", "1", true); | | |||
| 122 | | ||||
| 123 | // Force initialization of GLX integration in the Qt's xcb backend | 118 | // Force initialization of GLX integration in the Qt's xcb backend | ||
| 124 | // to make it call XESetWireToEvent callbacks, which is required | 119 | // to make it call XESetWireToEvent callbacks, which is required | ||
| 125 | // by Mesa when using DRI2. | 120 | // by Mesa when using DRI2. | ||
| 126 | QOpenGLContext::supportsThreadedOpenGL(); | 121 | QOpenGLContext::supportsThreadedOpenGL(); | ||
| 127 | } | 122 | } | ||
| 128 | 123 | | |||
| 129 | GlxBackend::~GlxBackend() | 124 | GlxBackend::~GlxBackend() | ||
| 130 | { | 125 | { | ||
| ▲ Show 20 Lines • Show All 93 Lines • ▼ Show 20 Line(s) | 168 | { | |||
| 224 | 219 | | |||
| 225 | if (hasExtension(QByteArrayLiteral("GLX_EXT_buffer_age"))) { | 220 | if (hasExtension(QByteArrayLiteral("GLX_EXT_buffer_age"))) { | ||
| 226 | const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE"); | 221 | const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE"); | ||
| 227 | 222 | | |||
| 228 | if (useBufferAge != "0") | 223 | if (useBufferAge != "0") | ||
| 229 | setSupportsBufferAge(true); | 224 | setSupportsBufferAge(true); | ||
| 230 | } | 225 | } | ||
| 231 | 226 | | |||
| 232 | setBlocksForRetrace(true); | | |||
| 233 | | ||||
| 234 | if (m_haveEXTSwapControl) { | 227 | if (m_haveEXTSwapControl) { | ||
| 235 | glXSwapIntervalEXT(display(), glxWindow, 1); | 228 | glXSwapIntervalEXT(display(), glxWindow, 1); | ||
| 236 | } else if (m_haveMESASwapControl) { | 229 | } else if (m_haveMESASwapControl) { | ||
| 237 | glXSwapIntervalMESA(1); | 230 | glXSwapIntervalMESA(1); | ||
| 238 | } else { | 231 | } else { | ||
| 239 | qCWarning(KWIN_X11STANDALONE) << "NO VSYNC! glSwapInterval is not supported"; | 232 | qCWarning(KWIN_X11STANDALONE) << "NO VSYNC! glSwapInterval is not supported"; | ||
| 240 | } | 233 | } | ||
| 241 | 234 | | |||
| ▲ Show 20 Lines • Show All 479 Lines • ▼ Show 20 Line(s) | |||||
| 721 | { | 714 | { | ||
| 722 | return new GlxTexture(texture, this); | 715 | return new GlxTexture(texture, this); | ||
| 723 | } | 716 | } | ||
| 724 | 717 | | |||
| 725 | QRegion GlxBackend::prepareRenderingFrame() | 718 | QRegion GlxBackend::prepareRenderingFrame() | ||
| 726 | { | 719 | { | ||
| 727 | QRegion repaint; | 720 | QRegion repaint; | ||
| 728 | 721 | | |||
| 729 | present(); | | |||
| 730 | | ||||
| 731 | if (supportsBufferAge()) | 722 | if (supportsBufferAge()) | ||
| 732 | repaint = accumulatedDamageHistory(m_bufferAge); | 723 | repaint = accumulatedDamageHistory(m_bufferAge); | ||
| 733 | 724 | | |||
| 734 | startRenderTimer(); | 725 | startRenderTimer(); | ||
| 735 | glXWaitX(); | | |||
| 736 | 726 | | |||
| 737 | return repaint; | 727 | return repaint; | ||
| 738 | } | 728 | } | ||
| 739 | 729 | | |||
| 740 | void GlxBackend::endRenderingFrame(const QRegion &renderedRegion, const QRegion &damagedRegion) | 730 | void GlxBackend::endRenderingFrame(const QRegion &renderedRegion, const QRegion &damagedRegion) | ||
| 741 | { | 731 | { | ||
| 742 | if (damagedRegion.isEmpty()) { | 732 | if (damagedRegion.isEmpty()) { | ||
| 743 | setLastDamage(QRegion()); | 733 | setLastDamage(QRegion()); | ||
| 744 | 734 | | |||
| 745 | // If the damaged region of a window is fully occluded, the only | 735 | // If the damaged region of a window is fully occluded, the only | ||
| 746 | // rendering done, if any, will have been to repair a reused back | 736 | // rendering done, if any, will have been to repair a reused back | ||
| 747 | // buffer, making it identical to the front buffer. | 737 | // buffer, making it identical to the front buffer. | ||
| 748 | // | 738 | // | ||
| 749 | // In this case we won't post the back buffer. Instead we'll just | 739 | // In this case we won't post the back buffer. Instead we'll just | ||
| 750 | // set the buffer age to 1, so the repaired regions won't be | 740 | // set the buffer age to 1, so the repaired regions won't be | ||
| 751 | // rendered again in the next frame. | 741 | // rendered again in the next frame. | ||
| 752 | if (!renderedRegion.isEmpty()) | 742 | if (!renderedRegion.isEmpty()) | ||
| 753 | glFlush(); | 743 | glFlush(); | ||
| 754 | 744 | | |||
| 755 | m_bufferAge = 1; | 745 | m_bufferAge = 1; | ||
| 756 | return; | 746 | return; | ||
| 757 | } | 747 | } | ||
| 758 | 748 | | |||
| 759 | setLastDamage(renderedRegion); | 749 | setLastDamage(renderedRegion); | ||
| 760 | | ||||
| 761 | if (!blocksForRetrace()) { | | |||
| 762 | // This also sets lastDamage to empty which prevents the frame from | | |||
| 763 | // being posted again when prepareRenderingFrame() is called. | | |||
| 764 | present(); | 750 | present(); | ||
| 765 | } else { | | |||
| 766 | // Make sure that the GPU begins processing the command stream | | |||
| 767 | // now and not the next time prepareRenderingFrame() is called. | | |||
| 768 | glFlush(); | | |||
| 769 | } | | |||
| 770 | 751 | | |||
| 771 | if (overlayWindow()->window()) // show the window only after the first pass, | 752 | if (overlayWindow()->window()) // show the window only after the first pass, | ||
| 772 | overlayWindow()->show(); // since that pass may take long | 753 | overlayWindow()->show(); // since that pass may take long | ||
| 773 | 754 | | |||
| 774 | // Save the damaged region to history | 755 | // Save the damaged region to history | ||
| 775 | if (supportsBufferAge()) | 756 | if (supportsBufferAge()) | ||
| 776 | addToDamageHistory(damagedRegion); | 757 | addToDamageHistory(damagedRegion); | ||
| 777 | } | 758 | } | ||
| ▲ Show 20 Lines • Show All 114 Lines • Show Last 20 Lines | |||||