Sunday, April 30, 2017
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Hacker Gets Access To Unreleased "Orange Is The New Black" Netflix Episodes
Turkey Blocks Access To Wikipedia
Qualcomm Slashes Profit Expectations As Apple Refuses To Pay Royalty Payments
Kodi Clarifies DRM Stance, Shuts Down Rumors
ASML Countersues Nikon Over Alleged Patent Infringement
Image Sensors, Batteries And Playstation Boosts Sony's Profit
Cost Cuts Start Paying Off For Sharp
New Nintendo 2DS XL Gaming Handheld System Coming On July 28
Active Discussions
Which of these DVD media are the best, most durable?
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
Help make DVDInfoPro better with dvdinfomantis!!!
menu making
Optiarc AD-7260S review
cdrw trouble
 Home > News > Graphics Cards > Epic Ru...
Last 7 Days News : SU MO TU WE TH FR SA All News

Friday, March 09, 2012
Epic Runs Demanding Samaritan Demo on A Single Kepler GPU


Nvidia's next-generation Kepler GPU architecture made an appearance at Epic's panel session at this week's Game Developer Conference (GDC).

Samaritan has been regarded as a look into the distant future of gaming. Its graphics are so advanced that it was recently regarded as a fringe demo - requiring no fewer than three Nvidia GeForce GTX 580 graphics cards. That all changed with Epic demo at GDC, when it was unveiled that the Samaritan demo replaced the three GTC 580s with one Kepler GPU.

According to the demo, the Samaritan game can run on a single Kepler-based graphics card.



"Thanks to the increased graphics horsepower of the Kepler-based GPU and NVIDIA's new Fast Approximate Anti-Aliasing (FXAA) technology - an improvement to the industry?s established Multisample Anti-Aliasing technology - the Samaritan demo wowed the eager crowd in the standing-room-only panel session," Nvidia commented.

But it wasn't just the Kepler graphics card that made the demo possible. As important was the addition of Fast Approximate Anti-Aliasing (FXAA), an NVIDIA-developed anti-aliasing technique aiming to improve upon the success of Multisample Anti-Aliasing (MSAA), the form of anti-aliasing most commonly seen in today's games. Used to smooth out jagged edges and improve visual fidelity, anti-aliasing is key to creating the incredible sights of Samaritan.

Despite MSAA's popularity, "it is relatively costly in the demo because Samaritan uses deferred shading," explains Ignacio Llamas, a Senior Research Scientist at NVIDIA who worked with Epic on the FXAA implementation. By writing pixel attributes to off-screen render targets prior to final shading, deferred shading enables complex, realistic lighting effects that would be otherwise impossible using forward rendering, a lighting technique commonly used in many game engines. There are a couple of downsides to this: first the render targets require four times the memory since they must hold the information of four samples per pixel; and second, the deferred shading work is also multiplied by four in areas with numerous pieces of intersecting geometry.

"Without anti-aliasing, Samaritan's lighting pass uses about 120MB of GPU memory. Enabling 4x MSAA consumes close to 500MB, or a third of what's available on the GTX 580. This increased memory pressure makes it more challenging to fit the demo's highly detailed textures into the GPUs available VRAM, and led to increased paging and GPU memory thrashing, which can sometimes decrease framerates."

"FXAA is a shader-based anti-aliasing technique," however, and as such "doesn't require additional memory so it's much more performance friendly for deferred renderers such as Samaritan." By freeing up this additional memory developers will have the option of reinvesting it in additional textures or other niceties, increasing graphical fidelity even further.

FXAA can also produce gradients smoother than those of 4x MSAA, accordng to Nvidia.


Previous
Next
Dropbox File-sharing App Abused by Spammers        All News        Samsung Showcases Angry Birds Space at SXSW
NVIDIA Begins Windows 8 Driver Updates     Graphics Cards News      AMD Catalyst 12.2 Drivers Released

Get RSS feed Easy Print E-Mail this Message

Related News
The New NVIDIA Titan Xp Graphics Card Is Here
Prepare For Battle GeForce GTX Bundle Includes For Honor or Tom Clancy's Ghost Recon Wildlands Games
Nvidia Chips To Power Paccar Driverless Trucks
NVIDIA Partners with Bosch For Self-driving System Based on The DRIVE PX Xavier Platform
New Nvidia Game Ready Driver Boosts GeForce DirectX 12 Performance
NVIDIA Jetson TX2 Credit card-sized Platform Released
GeForce GTX 1080 Ti, Nvidia's fastest Card Yet, Arrives At $699
Nvidia, and AMD Increase GPU Attach Rates While Total GPU Shipments Remain Flat
Nvidia Reports Record Revenue Driven by Gaming GPUs Datacenter And Tegra
NVIDIA Powers Supercomputing Workstations with New Quadro GP100, Announce Quadro Pascal Refresh
Nvidia Announces New Ubisoft Game Bundles With GTX 1070, GTX 1080 Cards
NVIDIA Announces the G-SYNC HDR Technology

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2017 - All rights reserved -
Privacy policy - Contact Us .