Thursday, December 08, 2016
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Apple In Talks With Hollywood For Early Movie Rental
Bluetooth 5 Technology Brings Advancements In Terms Of Range, Speed And Capacity
Global Virtual Reality Association Established To Promote VR
Fitbit Acquired Assets from Pebble
GIGABYTE Announces Xtreme Gaming Peripherals, Including A Gaming Chair
Scythe Releases Improved Mugen 5 CPU Cooler Armed With Kaze Flex 120 Fan
Qualcomm Begins Sampling The 48- Core, 10nm Centriq 2400 Server Processor Family
Could Future Intel Chips Have AMD Graphics Inside?
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
Nvidia GTX 1050 And 1050 Ti Graphics Coming To Laptops Next Year
Free Game Bundles For GeForce and Radeon Graphics Cards
Nvidia Was The Sole GPU Maker That Increased Its GPU Shipments In Q3 2016
IBM and NVIDIA Team Up on New Platform For Deep Learning
Nvidia Reports Strong Revenue
Nvidia GeForce GTX 1050 Unveiled To Challenge AMD With A $110 Price
NVIDIA Launches New AI Technology At Third Regional GPU Tech Conference
Nvidia GPUs Could Return To Apple Macs
Gears of War 4 GeForce GTX Bundle Includes A Full-Game Download For PC
Nvidia Tesla P4, P40 Accelerators Focus On Deep Learning, Palm-sized DRIVE PX 2 Computer To Power Baidu car
GeForce Experience 3.0 Released
Baidu and NVIDIA Team Up on Map-to-Car Platform for Self-Driving Cars

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2016 - All rights reserved -
Privacy policy - Contact Us .