# -*- sh -*-
# Xsession.d script to set the QT_XCB_FORCE_SOFTWARE_OPENGL env variable when
# the user does not has at least OpenGL 2 support.
#
# This file is sourced by Xsession(5), not executed.

if [ "$(which glxinfo)" = "" ] ; then
    echo "To detect whether software based rendering is needed for Qt 5 the glxinfo program is a requirement but it was not found on this system."
    echo "On Debian (based) systems, install the mesa-utils package."
    #echo "On RedHat (based) systems, install the glx-utils package."
else
    OPENGL_VERSION=`LANG=C glxinfo | grep '^OpenGL version string: ' | head -n 1 | sed -e 's/^OpenGL version string: \([0-9]\).*$/\1/g'`
    if [ -n "$OPENGL_VERSION" ] && [ "$OPENGL_VERSION" -lt 2 ]; then
        QT_XCB_FORCE_SOFTWARE_OPENGL=1
        export QT_XCB_FORCE_SOFTWARE_OPENGL
    elif [ -n "$OPENGL_VERSION" ] ; then
        echo "OpenGL version: $OPENGL_VERSION."
    else
        echo "OpenGL version not found."
    fi
fi