[opensource-dev] Where oh where has my rendering gone?

[Kent Quirk (Q Linden)]

Well, it's not quite like that. To pull this off, you'd have to take everywhere we set a color, and set it instead to its equivalent black and white value (there's a formula that's traditionally used, although there's no "correct" way to do it:  Y = 0.3*R + 0.59*G + 0.11*B). You *might* be able to get away with modifying the LLColor4 constructor to do this, but it's probably going to have some surprising results when you assign a value and don't get the same value back.

Next, you'd have to filter all of the textures so that all textures are first converted to B&W before being used. That's also a troublesome task, and is likely to be slow.

On certain graphics cards, you could try to convert all the pixel shaders to do a B&W conversion for each pixel before rendering, but I don't know enough about our system to know if that would catch all the useful cases or not. 

I hope that helps, but I'm not particularly optimistic. :/

    Q


On Oct 5, 2010, at 5:36 PM, malachi wrote:

> Oh where oh where could it be!
> 
> Anyone can point me in the direction of the RGB rendering system in the  
> client? Am thinking about making a switch for b&w output to the client.  
> just have no idea where to start poking this beast.
> 
> 
> -- 
> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
> _______________________________________________
> Policies and (un)subscribe information available here:
> http://wiki.secondlife.com/wiki/OpenSource-Dev
> Please read the policies before posting to keep unmoderated posting privileges