POV-Ray : Newsgroups : povray.general : Fast sky / clouds : Re: Fast sky / clouds Server Time
6 Aug 2024 19:26:48 EDT (-0400)
  Re: Fast sky / clouds  
From: Kari Kivisalo
Date: 20 Mar 2002 08:59:04
Message: <3C989608.7EAB1602@LuxLab.com>
Hugo wrote:
> 
> I just read the Pov-docs about display_gamma.. Made me confused

The section on display_gamma points to 6.11.3 for more information on gamma.

6.11.3 Assumed_Gamma
---

no assumed_gamma in scene : 
   No gamma correction is applied to output file. 

assumed_gamma 1 : 
   Gamma Display_Gamma is applied to output file. 
   If Display_Gamma is not specified, 2.2 is used. 

assumed_gamma G : 
   Gamma Display_Gamma/G is applied to output file. 
   If Display_Gamma is not specified, 2.2/G is used. 

Recommended value for assumed_gamma is 1. 
---

The render window displays the image as it is written to file.
Radiosity works best with assumed_gamma 1 as will any feature
designed to simulate reality, like fresnel reflection.

Two tips to ease your path to enlightenment:

  Write rgb 0.2 instead of rgb 0.5 and rgb 0.03 instead of rgb 0.2.

  Don't hesitate to use image editor to enhance contrast at first.
  

Oh, and rgb 0.8 -> rgb 0.6 :)


_____________
Kari Kivisalo


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