[sldev] branches/shadow-draft missing llrender.cpp

[Carsten Juttner]

Eric M. Tulla (BigPapi Linden) wrote:
> This is to be expected. Dave's first email mentioned that the feature 
> would require at least a GeForce 8 to run.  Enabling it on 7 series or 
> lower hardware will have similarly bad results.
>
> Dante Tucker wrote:
>>     2008-05-31T14:49:49Z ERROR: addColorAttachment: WTF?


Looking at the FBO and pipeline code I think it's the deferred sun 
shadow shader which stops the 7s in its track.

It uses a double floating point texture (FP32) along with linear 
filtering which is only possible starting with G8x GPUs.

But would probably not be of much use even if it worked since I guess 
the sun shader (which is not linking) is necessary for it to work.

There are really quite some differences between G7x and G8x, for some 
features it's not just a case of "a bit slower" but a "can't work".

You need fallback paths for all of these and those aren't present yet.


Carsten