Please use a browser that supports "canvas" 1 sample/pixel. No jitter.
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Show Scene Number 0
Ray Tracer: Press 't' to Trace! (left: WebGL Scene Preview. Right: Ray-Traced Result.)
Mouse Drag: Aims the camera (turns left,right,up,down) W/S; A/D keys: move camera forward/backwards; strafe left/right. Q/E: strafe down/up.