У вашего броузера проблема в совместимости с HTML5
This is an explanation for creating object specific shadow masks that will render in OpenGL / GLSL shading mode in real time.
I also spend some time to demonstrate a combination of shadeless material shadow techniques that work well together to produce the effect of lighting and shadow without real scene lighting (previews and renders faster).
Model is from Turbosquid
Mask technique inspiration is from Andrew Kramer (videocopilot.net)