nV News Deals Shop Archive Search Files Forum Feed Articles IRC Chat GeForce.com


Search Site
Ads by Google
Links To NVIDIA
Drivers
Products
Communities
Support
NVIDIA Blog
News Room
About NVIDIA
GeForce Technology
CUDA
DirectX 11
Optimus
PhysX
SLI
3D Vision
3D Vision Surround
Articles
GeForce GTX 580
GeForce GTX 570
GeForce GTX 560 Ti
GeForce GTX 480
GeForce GTX 465
GeForce GTX 460
GeForce GTS 450
GeForce GTX 295
GeForce GTX 280
GeForce GTX 260
GeForce GT 240
GeForce 9800 GTX
GeForce 9800 GX2
GeForce 9600 GT
GeForce 8800 Ultra
GeForce 8800 GTX
GeForce 8800 GTS
GeForce 8800 GT
GeForce 8600 GTS
GeForce 8500 GT
GeForce 7950 GX2
GeForce 7950 GT
GeForce 7900 GTX
GeForce 7900 GS
GeForce 7800 GTX
Watercooling Project
My Book 500GB
Raptor Hard Drive
Guide To Doom 3
EVGA Stuff
EVGA E-LEET
EVGA Precision
GPU Voltage Tuner
OC Scanner
SLI Enhancement
EVGA Bot
EVGA Gear
Reviews and Awards
Associates
Benchmark Reviews
Fraps
GeForce Italia
GPU Review
Hardware Pacers
LaptopVideo2Go
MVKTECH
News3D (NVITALIA)
OutoftheBoxMods
OSNN.net
Overclocker Cafe
PC Extreme
PC Gaming Standards
PhysX Links & Info
TestSeek
3DChip (German)
8Dimensional
NVIDIA GeForce 6600 GT Preview - Page 4 of 6

DIRECT3D TEXTURE FILTERING

An examination of texture filtering under Direct3D was done using Unreal Tournament 2004, which supports application controlled texture filtering via the LevelOfAnisotropy setting in the UT2004.ini file. Anisotropic filtering can also be configured within the game by entering "preferences" in the console and selecting the rendering option in the advanced options applet.

Ironically, it was Unreal Tournament 2003 that brought about a number of investigations (here and here) concerning NVIDIA's past texture filtering optimizations, which were specifically targeted at the GeForce FX architecture.

UT2004 - Inferno

NVIDIA's response to driver optimizations was unveiled last October at Editor's Day 2003. A presentation by Nick Triantos, Director of Software Engineering, explained the optimization policy that NVIDIA began implementing at that time.

We have strict guidelines in place to ensure that questionable optimizations do not get introduced in future driver builds. All future optimizations must pass the following checkpoints before they can be checked in to the driver:

  • An optimization must produce the correct image.
  • An optimization must accelerate more than just a benchmark.
  • An optimization must not contain a precomputed state.
In our view, if an optimization produces the correct picture, it is beneficial to the user and is legitimate. If a change in the driver does not produce the correct picture, or functions only in the benchmark, it is either a bug and must be fixed, or a cheat.

While application specific optimizations are beneficial, they must be done without compromising image quality.

UT2004 - Face3

One reason why Unreal Tournament 2004 is graphically rich is due to the generous amount of texture blending operations that take place in the rendering engine. Complex texture blending operations are often referred to as texture stages, which provide special graphics effects like bump mapping, dual texturing, light mapping and environment mapping.

Graphics chipsets like the GeForce 6 Series provide hardware acceleration for texture blending operations. However, these operations, combined with trilinear and anisotropic texture filtering algorithms, can quickly become computationally intensive. Direct3D supports the blending of up to eight textures, which are numbered 0 through 7.

Next Page: Direct3D Texture Filtering Continued

Last Updated on September 7, 2004


Table of Contents

Advertisement

nV News - Copyright © 1998-2014.
Search Products
Search
for


Ads by Casale
Tweaks
Metro: Last Light
PlanetSide 2
Miscellaneous Links
AutoDesk 123 Design
Build Your Gaming PC
FPS vs. Frame Time
Free Games And MMOs
GeForce SLI Technology
HPC For Dummies
PC Game Release Dates
Play Classic PC Games
Steam Hardware Survey
Video Game Designers
TechTerms Dictionary
GPU Applications
AMD GPU Clock Tool
AMD System Monitor
ATITool
aTuner
EVGA E-LEET
EVGA OC Scanner
EVGA Precision
EVGA Voltage Tuner
Gainward ExperTool
GPU-Shark
GPU Voltage Tuner
Fraps
FurMark
GLview
GPU Caps Viewer
GPU PerfStudio
GPU Shark
GPU-Z
MSI Afterburner
nHancer
NiBiTor
NVClock (Linux)
NVFlash
NVIDIA Inspector
NvTempLogger
NVTray
PowerStrip
RivaTuner
SLI Profile Tool
The Compressonator
3DCenter Filter Test
3DMark 11
3DMark Vantage
PhysX Applications
Cell Factor Revolution
Cryostatis Tech Demo
Cube Wall Demo
PhysX FluidMark
Fluid Physics
NV PhysX Tweaker
NVIDIA OPTIX 2
PhysX Downloads
PhysX at YouTube
Add-In Partners
AFOX
ASUS
AXLE
BFG Technologies
BIOSTAR
Chaintech
Colorful
ELSA
emTek
EVGA
GAINWARD
GALAXY
GIGABYTE
FORSA
FOXCONN
Inno3D
Jaton
Leadtek
Manli
MSI
Palit
PNY
Point of View
Prolink
SPARKLE
XFX
ZOGIS
ZOTAC