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

[Dante Tucker]

Your emails kinda messed up, theres a  "Dante Tucker wrote:" and following
that, stuff I never wrote.
Oh and also, Dave never actualy stated it would require a GeForce 8, I don't
know where everyone got that idea from. Thats why I was simply confirming
his suspicion that it did not run on earlier cards.

On Mon, Jun 2, 2008 at 4:09 PM, Carsten Juttner <carjay at gmx.net> wrote:

> 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
>
>
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