Reflection Pass

A reflection pass is one possible layer of a multi-layered render pass. It is a specialised pass, intended to heighten an earlier pass, and so is never the first pass of the sequence.

It deals, as the name implies, with the lighting reflections of the objects. Depending on how computationally intensive it is, it may be used instead of a highlight pass, or before it on the queue (to generate data that makes the highlight pass faster). The reflection pass uses either raycasting, or raytracing of the light sources to determine where the light rays pass in the scene, and so where the reflections will travel.

As both processes are extremely processor-intensive, at this time neither is used for real-time rendering, as it is simply not feasible in the time allowed between real-time frames. A full raycast (the fastest method) may take several minutes, whereas real-time demands thirty renders a second or more. Thus a reflection pass is not a consideration for real-time VR for the foreseeable future.

See Also: Raycasting, Raytracing, Frame Rate, Render Pass, Beauty Pass, Specular Pass, Shadow Pass, Depth Pass, Lighting Pass, Depth Pass, LOD

Below, we offer a selection of links from our resource databases which may match this term.

Anisotropic Shading Beauty Pass Colour Pass Diffuse Pass Highlight Pass

Reflection Pass Shadow Pass Specular Pass

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Zen and the Art of Spiral-Carved, Green Marble Incense Burners
A humourous yet apt article on the materialness of a world. How can any world design be taken seriously, when there is no coded reflection of the material underpinnings of it?

AR Gimmicks > Epson New Year Cards
Epson rounded off 2009 with a novel marketing strategy utilising virtual mirror technology. The standard type of kiosk-based visual AR, virtual mirrors utilise a camera and a large flatscreen display (the mirror) to superimpose virtual data upon the reflection returned. The idea? To create AR New Year's cards to send.

Six ways to build robots that do humans no harm
NewScientist reports on six hypothetical ways to make robotic beings that will not harm humans. Not that any of them are likely to come to pass.

AI researchers believe 'Rascals' can pass Turing test
Passing the Turing test -the holy grail of artificial intelligence, whereby a human conversing with a computer can't tell it's not human- may now be possible via VR with a Blue Gene supercomputer, according to AI experts at Rensselaer Polytechnic Institute.

What's in a name? ...a demotion for the darling concept of the real
Virtual always suggests unreal, or imaginary. A virtual entity can pass for, a real thing but is less than the real thing itself. Sounds like a nice statement. Are we really so sure its true?

Cranial Nerves
There are twelve cranial nerve pairings (making 24 nerves in total) which split out from the brain, and move to cover the needs of the cranium and face, rather than make their way down through the central spinal cord. These nerves are important to consider, as most are of critical importance to sensory data, yet do not pass through the central cord, and so cannot be intercepted at the same juncture.

A Sterile World
Smell is a sense often overlooked in a virtual world. Developers discount its importance, as a minor sense, when in truth we rely on it as an input channel to flesh out the world around us. Scents carry on the breeze, and they are with us all the time: from the perfumed odours of pollen blowing in the wind, to the pong as you pass a full dustbin, to the aroma of freshly cooked food wafting out of a pub.

Virtual Girl

Virtual girl is firmly placed for all time, in the category of camp, cheesy, low budget trash, attempting to pass itself off as VR. It?s a film with a schizophrenic direction. Half the time it is trying oh so hard, so desperately hard to be a sci-fi film about VR technology gone wrong. The other half of the time, it is trying to be soft core pornography. Thus, it fails miserably at both.

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