Re: [Yafray-devel] on line updates...

[Andera]

On sab, 2003-01-11 at 11:06, Andera wrote:
> > This is an example of a the new sunsky background.
> > 
> > <!-- sunsky background shader -->
> > <background type="sunsky" name="sky" turbidity="4"
> > add_sun="on">
> >     <from x="-7" y="-10" z="1" />
> > </background>
> > 
> > 'tubidity' controls atmosphere density, 4 which is the
> > default is an almost clear sky, higher values may or
> > may not work well, since the chromaticity/rgb
> > conversion is not how it is done in the official code,
> > which uses an elaborate function based on spectral
> > data. Atmosphere effects themselves are also not used.
> > So it only affects the overall color and the sun
> > effect on the atmosphere.
> 
> > With 'add_sun' you can specify if an actual sunlight
> > should be created at the specified position but also
> > with the correct color at that position in the sky.
> 
> Ok, add_sun ="on" means that a sunlight must exist in the scene?
> Or a brand new is created?
> If so, the color?
> I do these question to know if I have just to put a single button "Add
> Sun" or a more compicated set of params...
Ignore this, I answered myself.....


> > This is an example of a render block with all the new
> > parameters:
> > 
> > <render camera_name="Camera" samples="16" raydepth="5"
> >     bias="0.001000" tolerance="0.06"
> >     gamma="1.5" exposure="1.4142136"
> >     fog_density="0.005" >
> >     <fog_color r="1" g="1" b="1" />
> >     <outfile value="myimage.tga"/>
> > </render>
>  


> > 'exposure' controls any exposure adjustments, if set
> > to 0, no exposure calculations are done. This
> > parameter can be used to 'compress' the entire
> > brightness of the picture in the range 0-1, no matter
> > how high the actual intensities are. The parameter
> > controls the brightness curve, the default is sqrt(2),
> > lower is darker, higher is brighter, but it all
> > remains in the range 0-1.
> 
> Well, what is the difference between "0" and sqrt(2)?
> "0" -> do nothing (normal appearence)?
> sqrt(2) -> apply the value (gives normal appearence ?)
Now that I got the code...I can verify it!
> Thanks for the help!
> 
> Andrea
This is the new question....
I have to ignore the non-randomsamplig also for the pathtracing?
And...
Pathtrace seems to work only if a background is set...right?
Andrea