[Bf-committers] Dithering

[Ton Roosendaal]

Hi,

I'm pretty sure it's a welcome addition, as an option of course. In the  
very dark ages we had this in Blender too, but it was removed to enable  
compression (tga, jpg, mpg) better.

So, nice too see it back :)
I'm still a bit too busy right now, but will verify the patch soon!

-Ton-

On 27 Oct, 2004, at 11:04, Goran Kocov wrote:

> Hi everybody!
>
> One of the biggest problems I have with Blender's
> internal renderer is that it doesn't do any dithering
> to the output while converting the floating point
> values to 8-bit integer values, resulting in noticable
> banding in some cases.
>
> While it shouldn't be very hard to implement this, it
> seems that it isn't high on the developers' priority
> list, so I decided to try and implement it myself.
> I've made some very simple changes to the renderer, to
> the Struct-DNA and to the render output panel, and as
> far as I can tell, (with dithering on) the banding is
> pretty much nonexistant now. Also I've done some basic
> testing both with stills and with animations and I
> couldn't notice any bugs/problems. Check this topic on
> the blender.org forums for example images
>
> http://www.blender.org/modules.php? 
> op=modload&name=phpBB2&file=viewtopic&t=4837
>
> Here's a patch made from the 27.10.2004 CVS (I've
> never made a patch before, so be prepared for a bumpy
> ride, sorry!).
>
> http://www.geocities.com/gkocov/misc/dither.patch.txt
>
> If there are any problems with the patch there's a
> tar.gz archive containing the original sources, the
> changed sources and the differences between them (it's
> from a slightly older CVS - 21.10.2004, but that
> shouldn't be a big problem).
>
> http://www.geocities.com/gkocov/misc/blender_dither_code.tar.gz
>
> This is my first time working with Blender's code and
> I don't have much C/C++ experience, so please be
> gentle on me. :)
>
> Goran
>
>
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------------------------------------------------------------------------ 
--
Ton Roosendaal  Blender Foundation ton at blender.org  
http://www.blender.org