What is Simultaneous Multi-Projection?
Techquickie
·Techquickie
·2017-05-06
·
931 words · ~4 min read
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you know when you think about it 3D gaming is a bit of a misnomer sure in
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many modern titles your character is moving around three-dimensional space as
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opposed to the Sid scrollers of yester year but at the end of the day we're
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gaming on flat two-dimensional monitors unless you happen to have one of those
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newfangled curved displays but you know what I mean showing a 3D image on a 2d
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display has long been an issue think for example about looking at a flat map of
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the world on Google Maps which uses a map projection that makes Land masses
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near the North and South Pole look way bigger than they actually are because
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translating a 3D sphere the Earth onto a 2d monitor or map is an imperfect
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process somewhat similarly your PC's graphics card has to project portions of
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3D objects onto your screen a certain
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way so that they appear to have the correct perspective and depth just as
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real life objects do computers do quite a good job of this in most modern games
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if you're only only rocking a single monitor setup but if you're running
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three monitors where the two displays on the side are tilted toward you you may
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have notice that some of your games look distorted and skewed on the side
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monitors to understand the reason for this it can help to visualize your GPU
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as a projector behind a set of translucent screens if all three of them
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are lined up straight on one plane the image will look correct but setting up
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your monitors like this takes up a ton of space and limits your field of view
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so most people tilt their two side monitors inward but this would make a
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hypothetical projector display a stretched incorrect image on those same
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in displays enter simultaneous
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multi-projection or SM SMP a new GPU
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technology featured on NVIDIA's new GeForce 10 series that alleviates this
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problem by essentially showing a different camera angle on each screen
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going back to our projector analogy this is like having a separate projector
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behind each screen instead of just one for your entire setup ensuring that the
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shapes and objects look realistic instead of like poorly constructed
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Play-Doh models but Teran doesn't that mean that my GPU has to render the same
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screen three different times won't that kill my frame rates and make my $600
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graphics card next to useless actually
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most of the really heavy rendering of things like geometry and lighting are
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done only once after that the multiple projections are created by using simple
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trans forms that clip or squeeze the stuff that has already been rendered
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which is much less compute intensive so you won't see a big dip in frame rates
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the current version of the Tex supports up to 16 different projections so you
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can have goodlooking visuals even if you have some sort of monstrous monitor
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Arrangement a similar concept is used to push two slightly different projections
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to each lens of a VR headset so that the
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3d effect looks correct technologies
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that in Nidia is calling single pass stereo and lens matched shading that
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compensate for the fact that there are two lenses and the fact that the lenses
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are curved instead of planer and if you've noticed that I keep talking about
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NVIDIA that's because right now s SMP is
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only a thing on their new GTX 1080 and
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1070 on supported games however as VR
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headsets and Surround gaming become more popular I wouldn't be surprised to see
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something similar on MD cards in the near future especially with their new
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Polaris architecture right around the corner so like the North Star hopefully
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SMP and related Technologies can point
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you towards a more immersive gaming experience if you just can't get enough
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screens in your battle station speaking of screens massdrop has
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has an IPS display for greater color accuracy four screen split so you can
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output an image from multiple devices at once and black level stabilization to
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help light up dark scenes of course this product is available only through Mass
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essentially the more people buy the more the price goes down to a set minimum
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with its minimum price being just under 30% below the MSRP you can check out
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this drop and many others at the link in the description
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draw. tequi so head over there now if you're interested that link doesn't give
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us a kickback or anything but it does let them know that we sent you got it
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okay thanks for watching guys like it if you like it dislike it if you disliked
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it and leave a comment if you want to leave a comment uh make sure to get
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subscribed if you aren't already and go ahead and check out some of our other
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videos that we've got linked up wherever
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you know check out uh maybe some Channel Super Fun if you if you like fun things
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and uh we'll see you next time whatever