Sample tests compatibility of shadow casting from directional light source within obsolete WebGL 1.0 context.
pload MODELING VISUALIZATION
# restrict context to OpenGL ES 2.0 (WebGL 1.0)
vdriver -load GLES
vcaps -maxVersion 2 0
# create simple scene
box b 1 2 3
box bb -5 -5 0 10 10 0 -preview
vgldebug 1
vclear
vinit View1
vcamera -persp
vdisplay -dispMode 1 b bb
vaspects bb -material STONE
vfit
# setup light sources
set aPrsSize 75
vlight -clear
vlight -add AMBIENT -color WHITE -display amb -prsSize $aPrsSize
# add WHITE directional light source
vlight -add DIRECTIONAL -color WHITE -direction 1.0 1.0 -1.0 -head 0 -display dir1 -prsSize $aPrsSize
vlight -change 1 -castShadows 1
vrenderparams -shadingModel PBR
vrenderparams -shadowMapBias 0.01
# setup environment cubemap
jsupload /images/kiara_2k_cube.jpg
vbackground -cubemap kiara_2k_cube.jpg