Hi, this is Wayne again with a topic “What is Simultaneous Multi-Projection?”.
You know when you think about it: 3d gaming is a bit of a misnomer sure. In many modern titles, your character is moving around a three-dimensional space as opposed to the side scrollers of yesteryear, but at the end of the day, we’re gaming on flat two-dimensional monitors. Unless you happen to have one of those newfangled curves displays, but you know what I mean: showing a 3d image on a 2d display has long been an issue. Think, for example, about looking at a flat map of the world on Google Maps, which uses a map projection that makes land masses near the North and South Pole look way bigger than they actually are because translating a 3d sphere, the earth onto a 2d monitor or Map is an imperfect process somewhat. Similarly, your pc’s graphics card has to project portions of 3d objects onto your screen a certain way so that they appear to have the correct perspective and depth just as real-life objects.
Do computers do quite a good job of this? In most modern games, if you’re only rocking a single monitor setup, but if you’re running three monitors where the two displays on the side are tilted toward you, you may have noticed that some of your games look distorted and skewed on the side. Monitors to understand the reason for this, it can help to visualize your GPU as a projector behind a set of translucent screens. If all three of them are lined up straight on one plane, the image will look correct, but setting up your monitors like this takes up a ton of space and limits your field of view. So most people tilt their two-side monitors inward. But this would make a hypothetical projector display a stretched incorrect image on those same in displays, enter simultaneous multipe rejection or SMP a new GPU technology featured on invidious new GeForce 10 series that alleviates this problem by essentially showing a different camera angle on each screen.
Going back to our projector analogy, this is like having a separate projector behind each screen, instead of just one for your entire setup, ensuring that the shapes and objects look realistic instead of like poorly constructed play-doh models, but Teheran. Doesn’T that mean that my GPU has to render the same screen three different times? Won’T that kill my frame rates and make my $ 600 graphics card next to useless. Actually, most of the really heavy rendering of things like geometry and lighting are done only once after that, the multiple projections are created by using simple transforms that clip or squeeze the stuff that has already been rendered, which is much less compute intensive.
So you won’t see a big dip in framerate. The current version of the text supports up to 16 different projections, so you can have good looking visuals, even if you have some sort of monstrous monitor arrangement. A similar concept is used to push to slightly different projections.
To each lens of a VR headset, so that the 3d effect looks correct technologies, that Nvidia is calling single pass, stereo and lens matched shading. The compensate for the fact that there are two lenses and the fact that the lenses are curved instead of planar and if you’ve noticed that I keep talking about Nvidia. That’S because right now, SMP is only a thing on their new GTX, 1080 and 1070 on supported games.
However, as VR headsets and surround gaming become more popular, I wouldn’t be surprised to see something similar on AMD cards in the near future, especially with their new Polaris architecture right around the corner, so like the North Star. Hopefully, SMP and related technologies can point you towards a more immersive gaming experience. If you just can’t get enough screens in your battle station speaking of screens, mass drop has another one of their pretty killer. Deals going on today, the LG 34 um 57 34 inch ultra wide freesync monitor.
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