POV-Ray: Newsgroups: povray.beta-test: Can POV make use of 48 bpp color images as detailed height fields?: Re: Can POV make use of 48 bpp color images as detailed heightfields?

POV-Ray : Newsgroups : povray.beta-test : Can POV make use of 48 bpp color images as detailed height fields? : Re: Can POV make use of 48 bpp color images as detailed heightfields?		Server Time 30 Jul 2024 18:16:34 EDT (-0400)

From: Christoph Hormann
Date: 12 Oct 2001 05:40:49
Message: <3BC6BAA1.74BF9F27@gmx.de>

Thorsten Froehlich wrote:
> 
> You should be able to use 16-bit grayscale PNG images.  You can also use
> 48-bit per pixel (16-bit per color component) PNG images of which only the
> read channel will be used. As for a program that creates this kind of PNG
> images (also they are standard), I don't know except for POV-Ray itself.

I think gforge/hf-lab does write those pngs.

> And of course the old format using the red and green color component of
> 8-bit per color component images is still available as well.  I think there
> are a few (ancient) programs out there that support this format, but I don't
> know where to get those either.

red/green channel TGA is a quite convenient format if you want to
write/read from your own program without libpng etc.  Writing a TGA header
is extremely easy and the rest is just an array of rgb triples.  Of course
it's an awful waste of space...

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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