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Quak4 (v1.0.1b)
Filename: quak4_1.0.1b.zip


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 306.23 KB
v1.0.1b
tertsi
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10-24-2005
Utilities > Miscellaneous


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Quak4 (v1.0.1b) - File Description  


Description:
Quak4 is a small tuning program for Quake 4 compatible with NVIDIA GeForce 7800, 6800 and 5900 series cards. With Quak4 it is possible to tune Quake 4's vertex and fragment programs by e.g. enhancing image quality and performance.

Features:

- Performance Options
e.g. FP16 and NRM ALU Operations

- Image Quality Options
e.g. Specular and Offset Mapping

- Easy GUI and Config Profiles
e.g. Profiles for different cardsgment programs by e.g. enhancing image quality and performance.


Quak4 (v1.0.1b) - Readme  
Readme File:
Quak4 v1.0.1b release
Quake 4 tuning tool for NVIDIA G70/NV40/NV30 series gpu's. Developed by tertsi.


0.1.0 Description

Quak4 is a small tuning program for Quake 4 compatible with NVIDIA GeForce 7800, 6800 and 5900
series cards. With Quak4 it is possible to tune Quake 4's vertex and fragment programs by e.g.
enhancing image quality and performance.


0.2.0 Features

- Performance Options
e.g. FP16 and NRM ALU Operations

- Image Quality Options
e.g. Specular and Offset Mapping

- Easy GUI and Config Profiles
e.g. Profiles for different cards


0.3.0 System and Driver Recommendation

- NVIDIA GeForce 7800 or 6800 series cards for the best image quality and performance

- 81.xx or newer NVIDIA ForceWare (Win2kxp) drivers


0.4.0 Installation & Setting Up Options

1. Unzip Quak4.zip (e.g. to desktop) and start Quak4 tool.

2. Set your Quake 4 directory (e.g. C:\Games\Quake 4).

3. Set up Quak4 Options

- Select option profile from "Current Option Profiles" dropmenu or load profile (Open button)
from config file.

- OR set up options manually.

4. Click "Build interaction.vfp" button (build interaction.vfp into "Quake 4\q4base\glprogs" directory)
and you're ready to play Quake 4 with Quak4's custom vertex and fragment programs. You can start
Quake 4 without Quak4 tool. Quake 4 doesn't work properly in pure server (multiplayer) with Quak4's
custom vertex and fragment programs.


0.5.0 Uninstallation

1. Start Quak4 tool and click "Remove interaction.vfp" to remove custom "interaction.vfp" file.
You can also remove "interaction.vfp" file manually from "Quake 4\q4base\glprogs" directory.

2. Remove Quak4 directory.




1.0.0 Performance Options

1.1.0 Precision Hint Fastest (ARB_fragment_program option)

If a fragment program specifies the "ARB_precision_hint_fastest" program
option, implementations should select precision to minimize program execution
time, with possibly reduced precision. If a fragment program specifies the
"ARB_precision_hint_nicest" program option, implementations should maximize
the precision with possibly increased execution time.


1.2.0 Short Temporaries (fp16) (NV_fragment_program option)

Variables declared as "SHORT" will represented with at least 16-bits per
component.


1.3.0 FP16 ALU Operations (NV_fragment_program option)

Arithmetic operations can be forced at 16-bit floating-point precision (fp16).


1.4.0 FX12 ALU Operations (NV_fragment_program option)

Arithmetic operations can be forced at 12-bit fixed point precision (fx12) on NV30
series gpu's. This option may cause a substantial performance hit on G70 and NV40
series gpu's.


1.5.0 Normalization Cube Map

instead of using the math (DP3/RSQ/MUL instructions), normalize with normalization
cube map.


1.6.0 NRM Instruction (G70 and NV40 series gpu's)

3-Component Vector Normalize - the normalization uses approximate scale and may
be carried at lower precision than a corresponding sequence of DP3, RSQ, and MUL
instructions. This option is compatible with G70 and NV40 series gpu's.


1.7.0 Specular Texture Lookup

option to replace specular texture lookup with arithmetic operations (SUB_SAT/MUL/
MUL_SAT instructions).


1.8.0 Swizzle (xyz)

Rearrange or mask the vector components (xyz).


1.9.0 Multiply and Add (vp)

Multiply And Add (vp): option to replace sequence of MUL and ADD instructions
with MAD instruction in the vertex program (vp).




2.0.0 Image Quality Options

2.1.0 Specular

Quak4 tuning tool offers two new specular (highlight) options for the players. Both
options improves the visual quality of specular highlights (more specular details on
bumpmaps) over the default specular.

Specular modes
--------------------------------------------------------------
Default: DP3
High Quality: DP3/MUL/MAD/DP3_SAT/MOV/POW
Ultra Quality (NV_fragment_program option): RFL/MUL/DP3/POW


2.1.1 Specular Mul / Exp

Mul: Multiply the specular vectors.
Exp: modulate the specular exponentiation (x^y).


2.1.2 Modulate Specular Lookup Table

Specular lookup table is modulated by specular modifier. This option to
remove the plastic effect in Quake 4 scenes.


2.1.2b Specular Modulate Scale

Modulate the specular modifier by the specular scale.


2.1.3 Clamp Specular Vector

Clamp the result vector components to range [0,1] (DP3_SAT/RFL_SAT).
This option to reduce the plastic effect in Quake 4 scenes without Modulate
Specular Lookup Table option.

2.2.0 Offset Mapping

Quak4 tuning tool also offers four Offset Mapping options for the players. Offset Mapping
is a simple way to augment bump mapping to include offset effects (more geometric details).
Offset Mapping uses the information about the height of a surface at a single point to
offset the texture coordinates either toward or away from the viewer. Height Map Offset
and Relief Mapping are disabled for now.


Offset Mapping modes
--------------------------------------------------------------
Off: No Offset Mapping
Normal Map Offset (High): Fetch Height Map from Normal Map (z)
Normal Map Offset (Ultra): Fetch Height Map from Normal Map (reconstruct the z vector)
Height Map Offset (disabled) : Fetch Height Map from Specular or Diffuse Map (w)
Relief Mapping (disabled) : Fetch Height Map from Specular or Diffuse Map (w)


2.2.1 Offset Scale / Bias

Scale: Offset scale factor.
Bias: Offset bias range.


2.3.0 Reconstruct Normal Z Vector

It is also possible to reconstruct the z vector component of the normal in the fragment
program (MUL/ADD/RSQ/RCP instructions), which will provide even higher quality. The
additional performance cost is relatively small.


2.3.1 Normal Z Vector Scale

Scale the z vector component of the normal.


2.4.0 Renormalize Normal Vector

Renormalize the normal vector. Renormalizing the normal after the texture fetch can
dramatically improve the quality of bump mapping. The only problem with renormalization
is that it can cause aliasing of specular highlights.




3.0.0 Quak4 site and support

Quak4 site for the latest release and option profiles:

http://www.fornvidiots.net

Please, post your suggestions, comments and feedbacks Forum@nVnews.net:

http://www.nvnews.net/vbulletin/showthread.php?t=58542




QUAKE 4 is registered trademark of id Software.

Copyright (C) 2005 tertsi and skenegroup|net

This software is being distributed as Freeware. It may be freely
used, copied and distributed as long as it is not sold, and all
original files are included, including this license. By using this
software, you agree to these terms and the terms of the
Disclaimer below.

Disclaimer

Tero Ojanpera (aka tertsi) or Skenegroup|net may not be held
responsible for any damage which may be caused to your system.
Use all files at your own risk. If you do not accept these
terms you are not allowed to use, download or store any files
from skenegroup.net.


Oct 22 2005
tertsi (tertsi@skenegroup.net)


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