Qt3D "qt.glx: qglx_findConfig:找不到匹配的FBConfig“警告

Question

Ubuntu 18.04.1操作系统，QT版本5.12

启动显示3D窗口的程序后，控制台将写入以下警告：

QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (8 8 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 8 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (8 8 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 8 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (8 8 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 8 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 8 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 0)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (8 8 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 8 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (8 8 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 8 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (8 8 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 8 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 8 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8

也许这个信息可以帮助回答这个问题：

sudo ldconfig -p | grep -i gl.so
[sudo] password for ilya: 
    libwayland-egl.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libwayland-egl.so.1
    libcogl.so.20 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libcogl.so.20
    libOpenGL.so.0 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libOpenGL.so.0
    libOpenGL.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libOpenGL.so
    libGL.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libGL.so.1
    libGL.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libGL.so
    libEGL.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libEGL.so.1
    libEGL.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libEGL.so

Answer 1

你在使用QSurfaceFormat吗？我也有同样的问题，取消对QSurfaceFormat.setSamples的注释有助于解决这个问题：

QSurfaceFormat fmt;
//fmt.setSamples(4);
fmt.setVersion(3, 0);
QSurfaceFormat::setDefaultFormat(fmt);