POV-Ray : Newsgroups : povray.newusers : Custom shaders? Server Time
22 Dec 2024 16:07:15 EST (-0500)
  Custom shaders? (Message 1 to 5 of 5)  
From: kursad
Subject: Custom shaders?
Date: 26 Jun 2011 02:05:01
Message: <web.4e06cb80fb4a2f131c1e3d720@news.povray.org>
Hi

Is it possible to write custom shaders from scratch with Pov-ray`s language? Is
this something that can be done only by patching the code base?


thanks


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From: clipka
Subject: Re: Custom shaders?
Date: 26 Jun 2011 06:00:07
Message: <4e070327$1@news.povray.org>
Am 26.06.2011 08:02, schrieb kursad:
> Is it possible to write custom shaders from scratch with Pov-ray`s language? Is
> this something that can be done only by patching the code base?

Some typical shader effects can be achieved using POV-Ray's various 
patterns, most notably the "aoi" and "slope" patterns. Others can be 
achieved by smart preprocessing (e.g. proximity patterns). POV-Ray does 
not provide a dedicated shader language though, so for some cases it 
might be necessary to get your hands dirty on the source code.


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From: kursad
Subject: Re: Custom shaders?
Date: 26 Jun 2011 11:30:00
Message: <web.4e07506ac3bf925c1c1e3d720@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Am 26.06.2011 08:02, schrieb kursad:
> > Is it possible to write custom shaders from scratch with Pov-ray`s language? Is
> > this something that can be done only by patching the code base?
>
> Some typical shader effects can be achieved using POV-Ray's various
> patterns, most notably the "aoi" and "slope" patterns. Others can be
> achieved by smart preprocessing (e.g. proximity patterns). POV-Ray does
> not provide a dedicated shader language though, so for some cases it
> might be necessary to get your hands dirty on the source code.

clipka, thanks for your answer. I was thinking about writing things like simple
specular shaders, minneart shader etc for tests.


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From: Zeger Knaepen
Subject: Re: Custom shaders?
Date: 27 Jun 2011 13:39:51
Message: <4e08c067$1@news.povray.org>
On 26/06/2011 8:02, kursad wrote:
> Hi
>
> Is it possible to write custom shaders from scratch with Pov-ray`s language? Is
> this something that can be done only by patching the code base?

there used to be an unofficial version of POV-Ray, I believe it was 
called POVMan, which allowed you to use Renderman-shaders in POV-Ray.

If it still exists, it's probably hopelessly outdated by now, but still, 
it might good enough for you.

Let's see if I can find an url for you... nope, seems to be gone.  But I 
might still have the installation-files somewhere, let's see!
hmm, can't find it, sorry :(


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From: Christian Froeschlin
Subject: Re: Custom shaders?
Date: 27 Jun 2011 17:19:59
Message: <4e08f3ff$1@news.povray.org>
Zeger Knaepen wrote:

> there used to be an unofficial version of POV-Ray, I believe it was 
> called POVMan, which allowed you to use Renderman-shaders in POV-Ray.

Incredibly enough people keep snapshots of the internet around ;)

http://web.archive.org/web/20071227093052/http://www.aetec.ee/fv/vkhomep.nsf/dd5cab6801f1723585256474005327c8/3a82f711cb03c4794225693d00549306?OpenDocument

Also, the living net still seems to have something on the clothray page

http://tofbouf.free.fr/clothray/wpovman0714.zip


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