Sample prints information about obsolete OpenGL ES 2.0 (WebGL 1.0) context using V3d_View::DiagnosticInformation() method.
pload MODELING VISUALIZATION
# Request OpenGL ES 2.0 (WebGL 1.0)
# instead of OpenGL ES 3.0 (WebGL 2.0)
# before WebGL context creation
vdriver -load GLES
vcaps -maxVersion 2 0
# create verbose (debug) OpenGL context (desktop-only)
#vgldebug 1
vinit View1
vclear
vcamera -persp -fovy 60
psphere s 1
vdisplay -dispMode 1 s
vfit
# common memory usage information
meminfo
# information about Draw Harness build parameters
dversion
# OpenGL context information
vglinfo -complete
# GPU memory usage (desktop-only)
#vmemgpu