WebGL renders only white canvas in 5.11
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I have successfully compiled Qt including QtWebEngine (branch 5.11, checked out yesterday) from git sources. The most simple and trivial browser example using QtWebEngine works well, except WebGL does not render anything - the HTML canvas remains white. (CSS 3D transforms work though). There are no errors or warnings in the Chromium development console. Setting QWebEngineSettings::WebGLEnabled was not effective (it's on by default anyway).
Running the same example program with a system-installed Qt 5.7.1 (Debian 9 "Stretch") works. Also, running WebGL with a recent QtWebKit (from git) on Qt 5.11 works.
Any ideas how to make WebGL rendering in 5.11 work? Is this perhaps a bug? Any hints appreciated.
My system:
CPU: Intel Core i5-4570
GPU: Cape Verde XT [Radeon HD 7770/8760 / R7 250X]
OS: Debian 9 ("Stretch")Built with:
git clone https://github.com/qt/qt5.git cd qt5 (commit was 3ba940924de24c90ec1) ./init-repository -f --branch ./configure --prefix=$PREFIX -opensource -confirm-license -nomake examples -nomake tests --compile-examples=no -webengine-ffmpeg -skip qtquick1 make -j4 make installThe ./configure script reported "yes" for all OpenGL related features.
The trivial example program used:
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) { qputenv("QTWEBENGINE_REMOTE_DEBUGGING", "9000"); QWebEngineView *view = new QWebEngineView(this); this->setCentralWidget(view); view->setUrl(QUrl("https://www.w3schools.com/Css/css3_3dtransforms.asp")); // works view->setUrl(QUrl("https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/Basic_2D_animation_example")); // does not workThanks.
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Additional info:
I'm using KDE on X (no Wayland).
The output of ./configure :
+ cd qtbase + /mnt/files/Public/programs/qt5/qtbase/configure -top-level --prefix=/home/michael/progs/qt -opensource -confirm-license -nomake examples -nomake tests --compile-examples=no -webengine-ffmpeg -skip qtquick1 <srcbase> = /mnt/files/Public/programs/qt5/qtbase <bldbase> = /mnt/files/Public/programs/qt5/qtbase <outbase> = /mnt/files/Public/programs/qt5/qtbase Creating qmake... .Done. Info: creating stash file /mnt/files/Public/programs/qt5/.qmake.stash This is the Qt Open Source Edition. You have already accepted the terms of the Open Source license. Running configuration tests... Checking for gold linker... yes Checking for machine tuple... yes Checking for valid makespec... yes Checking for target architecture... x86_64 Checking for SSE2 instructions... yes Checking for AES new instructions... yes Checking for alloca() in alloca.h... yes Checking for SSE3 instructions... yes Checking for SSSE3 instructions... yes Checking for SSE4.1 instructions... yes Checking for SSE4.2 instructions... yes Checking for AVX instructions... yes Checking for AVX2 instructions... yes Checking for AVX512 F instructions... yes Checking for AVX512 BW instructions... yes Checking for AVX512 CD instructions... yes Checking for AVX512 DQ instructions... yes Checking for AVX512 ER instructions... yes Checking for AVX512 IFMA instructions... yes Checking for AVX512 PF instructions... yes Checking for AVX512 VBMI instructions... yes Checking for AVX512 VL instructions... yes Checking for C++14 support... yes Checking for C++1z support... yes Checking for pkg-config... yes Checking for D-Bus >= 1.2... yes Checking for new dtags support... yes Checking for F16C instructions... yes Checking for D-Bus >= 1.2 (host)... yes Checking for udev... yes Checking for POSIX fallocate()... yes Checking for precompiled header support... yes Checking for RDRAND instruction... yes Checking for symbol visibility support... yes Checking for -Bsymbolic-functions support... yes Checking for SHA new instructions... yes Checking for STL compatibility... yes Checking for zlib... yes Checking for Intrinsics without -mXXX argument... yes Checking for clock_gettime()... yes Checking for POSIX monotonic clock... yes Checking for C++11 <future>... yes Checking for dlopen()... yes Checking for eventfd... yes Checking for futimens()... yes Checking for getauxval()... yes Checking for getentropy()... no Checking for GLib... yes Checking for POSIX iconv... yes Checking for ICU... yes Checking for inotify... yes Checking for SysV IPC... yes Checking for linkat()... yes Checking for ppoll()... yes Checking for renameat2()... no Checking for slog2... no Checking for statx() in libc... no Checking for 64 bit atomics... yes Checking for DoubleConversion... yes Checking for PCRE2... no Checking for O_CLOEXEC... yes Checking for C++11 <random>... yes Checking for working std::atomic for function pointers... yes Checking for getifaddrs()... yes Checking for IPv6 ifname... yes Checking for Linux AF_NETLINK sockets... yes Checking for OpenSSL Headers... yes Checking for OpenSSL 1.1 support... yes Checking for XCB >= 1.5 (core)... yes Checking for atspi... yes Checking for Desktop OpenGL... yes Checking for EGL... yes Checking for XCB Xlib... yes Checking for EGL on X11... yes Checking for Broadcom EGL (Raspberry Pi)... no Checking for EGLDevice... yes Checking for KMS... yes Checking for GBM... yes Checking for Mali EGL... no Checking for Mali 2 EGL... no Checking for i.Mx6 EGL... no Checking for evdev... yes Checking for FreeType... yes Checking for Fontconfig... yes Checking for libinput... yes Checking for axis API in libinput... yes Checking for LinuxFB... yes Checking for mtdev... yes Checking for OpenVG... no Checking for default QPA platform... xcb Checking for HarfBuzz... no Checking for libjpeg... yes Checking for libpng... yes Checking for XCB (extensions)... yes Checking for tslib... no Checking for Vulkan... no Checking for X11 prefix... /usr Checking for XCB GLX... yes Checking for XLib... yes Checking for XRender for native painting... yes Checking for XCB XRender... yes Checking for X11 session management... yes Checking for Xinput2... yes Checking for XCB XKB >= 1.10... yes Checking for xkbcommon-x11 >= 0.4.1... yes Checking for xkbcommon... yes Checking for GTK+ >= 3.6... yes Checking for CUPS... yes Checking for DB2 (IBM)... no Checking for InterBase... no Checking for MySQL... yes Checking for OCI (Oracle)... no Checking for ODBC... yes Checking for PostgreSQL... yes Checking for SQLite (version 2)... yes Checking for TDS (Sybase)... yes Checking for Socket CAN... yes Checking for Socket CAN FD... yes Checking for Direct3D 12... no Checking for SDL2... no Checking for Assimp... no Checking for Autodesk FBX... no Checking for Wayland client library... yes Checking for Wayland cursor library... yes Checking for wayland-scanner... yes Checking for DRM EGL Server... yes Checking for libhybris EGL Server... no Checking for Wayland EGL library... yes Checking for XComposite... yes Checking for GLX... yes Checking for wayland-server... yes Checking for BlueZ... no Checking for sensorfw... no Checking for Gypsy... no Checking for WinRT Geolocation API... no Checking for ALSA... yes Checking for GStreamer 1.0... yes Checking for GStreamer App 1.0... yes Checking for GStreamer encoding-profile.h... yes Checking for GStreamer Photography 1.0... yes Checking for Video for Linux... yes Checking for OpenAL... no Checking for PulseAudio >= 0.9.10... yes Checking for libresourceqt5... no Checking for alsa... yes Checking for bison... yes Checking for embedded... no Checking for flex... yes Checking for gperf... yes Checking for host pkg-config... /usr/bin/pkg-config Checking for pulseaudio >= 0.9.10... yes Checking for python2... /usr/bin/python2 Checking for d-bus... yes Checking for libavcodec libavformat libavutil... yes Checking for opus... yes Checking for libwebp, libwebpmux and libwebpdemux... yes Checking for fontconfig... yes Checking for glib-2.0 >= 2.32.0... yes Checking for glibc > 2.16... yes Checking for jsoncpp... yes Checking for khr... yes Checking for lcms2... yes Checking for libdrm... yes Checking for libevent... yes Checking for srtp... no Checking for libvpx... no Checking for libxml2 and libxslt... yes Checking for libxml2 configured with icuuc... yes Checking for minizip... yes Checking for system ninja... yes Checking for nss... yes Checking for libpng >= 1.6.0... yes Checking for protobuf... no Checking for re2... no Checking for snappy... no Checking for xcomposite... yes Checking for xcursor... yes Checking for xi... yes Checking for xrandr... yes Checking for xtst... yes Checking for zlib... yes Done running configuration tests. Configure summary: Build type: linux-g++ (x86_64, CPU features: mmx sse sse2) Configuration: use_gold_linker sse2 aesni sse3 ssse3 sse4_1 sse4_2 avx avx2 avx512f avx512bw avx512cd avx512dq avx512er avx512ifma avx512pf avx512vbmi avx512vl enable_new_dtags f16c largefile precompile_header rdrnd shani x86SimdAlways shared rpath release c++11 c++14 c++1z concurrent dbus reduce_exports reduce_relocations stl Build options: Mode ................................... release Optimize release build for size ........ no Building shared libraries .............. yes Using C++ standard ..................... C++1z Using ccache ........................... no Using gold linker ...................... yes Using new DTAGS ........................ yes Using precompiled headers .............. yes Using LTCG ............................. no Target compiler supports: SSE .................................. SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX .................................. AVX AVX2 AVX512 ............................... F ER CD PF DQ BW VL IFMA VBMI Other x86 ............................ AES F16C RDRAND SHA Intrinsics without -mXXX option ...... yes Build parts ............................ libs tools Qt modules and options: Qt Concurrent .......................... yes Qt D-Bus ............................... yes Qt D-Bus directly linked to libdbus .... yes Qt Gui ................................. yes Qt Network ............................. yes Qt Sql ................................. yes Qt Testlib ............................. yes Qt Widgets ............................. yes Qt Xml ................................. yes Support enabled for: Using pkg-config ....................... yes udev ................................... yes Using system zlib ...................... yes Qt Core: DoubleConversion ....................... yes Using system DoubleConversion ........ yes GLib ................................... yes iconv .................................. no ICU .................................... yes Tracing backend ........................ <none> Logging backends: journald ............................. no syslog ............................... no slog2 ................................ no Using system PCRE2 ..................... no Qt Network: getifaddrs() ........................... yes IPv6 ifname ............................ yes libproxy ............................... no Linux AF_NETLINK ....................... yes OpenSSL ................................ yes Qt directly linked to OpenSSL ........ no OpenSSL 1.1 ............................ yes SCTP ................................... no Use system proxies ..................... yes Qt Gui: Accessibility .......................... yes FreeType ............................... yes Using system FreeType ................ yes HarfBuzz ............................... yes Using system HarfBuzz ................ no Fontconfig ............................. yes Image formats: GIF .................................. yes ICO .................................. yes JPEG ................................. yes Using system libjpeg ............... yes PNG .................................. yes Using system libpng ................ yes EGL .................................... yes OpenVG ................................. no OpenGL: Desktop OpenGL ....................... yes OpenGL ES 2.0 ........................ no OpenGL ES 3.0 ........................ no OpenGL ES 3.1 ........................ no OpenGL ES 3.2 ........................ no Vulkan ................................. no Session Management ..................... yes Features used by QPA backends: evdev .................................. yes libinput ............................... yes INTEGRITY HID .......................... no mtdev .................................. yes tslib .................................. no xkbcommon-evdev ........................ yes QPA backends: DirectFB ............................... no EGLFS .................................. yes EGLFS details: EGLFS OpenWFD ........................ no EGLFS i.Mx6 .......................... no EGLFS i.Mx6 Wayland .................. no EGLFS RCAR ........................... no EGLFS EGLDevice ...................... yes EGLFS GBM ............................ yes EGLFS VSP2 ........................... no EGLFS Mali ........................... no EGLFS Raspberry Pi ................... no EGL on X11 ........................... yes LinuxFB ................................ yes VNC .................................... yes Mir client ............................. no X11: Using system-provided XCB libraries .. yes EGL on X11 ........................... yes Xinput2 .............................. yes XCB XKB .............................. yes XLib ................................. yes XCB render ........................... yes XCB GLX .............................. yes XCB Xlib ............................. yes Using system-provided xkbcommon ...... yes Native painting (experimental) ....... yes Qt Widgets: GTK+ ................................... yes Styles ................................. Fusion Windows Qt PrintSupport: CUPS ................................... yes Qt Sql: DB2 (IBM) .............................. no InterBase .............................. no MySql .................................. yes OCI (Oracle) ........................... no ODBC ................................... yes PostgreSQL ............................. yes SQLite2 ................................ yes SQLite ................................. yes Using system provided SQLite ......... no TDS (Sybase) ........................... yes Qt SerialBus: Socket CAN ............................. yes Socket CAN FD .......................... yes QtXmlPatterns: XML schema support ..................... yes Qt QML: QML network support .................... yes QML debugging and profiling support .... yes Qt Quick: Direct3D 12 ............................ no AnimatedImage item ..................... yes Canvas item ............................ yes Support for Qt Quick Designer .......... yes Flipable item .......................... yes GridView item .......................... yes ListView item .......................... yes Path support ........................... yes PathView item .......................... yes Positioner items ....................... yes Repeater item .......................... yes ShaderEffect item ...................... yes Sprite item ............................ yes Qt Gamepad: SDL2 ................................... no Qt 3D: Assimp ................................. yes System Assimp .......................... no Output Qt3D Job traces ................. no Output Qt3D GL traces .................. no Use SSE2 instructions .................. yes Use AVX2 instructions .................. no Aspects: Render aspect ........................ yes Input aspect ......................... yes Logic aspect ......................... yes Animation aspect ..................... yes Extras aspect ........................ yes Qt 3D GeometryLoaders: Autodesk FBX ........................... no Qt Wayland Drivers: EGL .................................... yes Raspberry Pi ........................... no XComposite EGL ......................... yes XComposite GLX ......................... yes DRM EGL ................................ yes libhybris EGL .......................... no Qt Wayland Client ........................ yes Qt Wayland Compositor .................... yes Qt Wayland Compositor Layer Plugins: VSP2 hardware layer integration ........ no Qt Bluetooth: BlueZ .................................. no BlueZ Low Energy ....................... no Linux Crypto API ....................... no WinRT Bluetooth API (desktop & UWP) .... no Qt Sensors: sensorfw ............................... no Qt Quick Controls 2: Styles ................................. Default Fusion Imagine Material Universal Qt Quick Templates 2: Hover support .......................... yes Multi-touch support .................... yes Qt Positioning: Gypsy GPS Daemon ....................... no WinRT Geolocation API .................. no Qt Location: Qt.labs.location experimental QML plugin . yes Geoservice plugins: OpenStreetMap ........................ yes HERE ................................. yes Esri ................................. yes Mapbox ............................... yes MapboxGL ............................. yes Itemsoverlay ......................... yes Qt Multimedia: ALSA ................................... yes GStreamer 1.0 .......................... yes GStreamer 0.10 ......................... no Video for Linux ........................ yes OpenAL ................................. no PulseAudio ............................. yes Resource Policy (libresourceqt5) ....... no Windows Audio Services ................. no DirectShow ............................. no Windows Media Foundation ............... no Qt WebEngine: Embedded build ......................... no Pepper Plugins ......................... yes Printing and PDF ....................... yes Proprietary Codecs ..................... no Spellchecker ........................... yes Native Spellchecker .................... no WebRTC ................................. yes Use System Ninja ....................... yes Geolocation ............................ yes Use v8 snapshot ........................ yes Use ALSA ............................... yes Use PulseAudio ......................... yes Optional system libraries used: re2 .................................. no icu .................................. no libwebp, libwebpmux and libwebpdemux . yes opus ................................. yes ffmpeg ............................... yes libvpx ............................... no snappy ............................... no libsrtp .............................. no glib ................................. yes zlib ................................. yes minizip .............................. yes libevent ............................. yes jsoncpp .............................. yes protobuf ............................. no libxml2 and libxslt .................. yes lcms2 ................................ yes png .................................. yes harfbuzz ............................. no Required system libraries: fontconfig ........................... yes dbus ................................. yes nss .................................. yes khr .................................. yes glibc ................................ yes Required system libraries for qpa-xcb: libdrm ............................... yes xcomposite ........................... yes xcursor .............................. yes xi ................................... yes xrandr ............................... yes xtst ................................. yes Note: Also available for Linux: linux-clang linux-icc Note: Dropped compiler flags '-pthread' when detecting library 'glib'. Note: Dropped compiler flags '-pthread' when detecting library 'gtk3'. Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'. Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'. Qt is now configured for building. Just run 'make'. Once everything is built, you must run 'make install'. Qt will be installed into '/home/michael/progs/qt'. Prior to reconfiguration, make sure you remove any leftovers from the previous build.
