d3d9: Add DF16 support

Henri Verbeet hverbeet at gmail.com
Mon Jun 8 01:34:12 CDT 2009


2009/6/7 Frank Richter <frank.richter at gmail.com>:
> On 07.06.2009 22:22, Henri Verbeet wrote:
>> Even if the format isn't lockable, you can still use the data with a
>> shader.
>
> If it's a typical depth format the shader will see normalized values.
>
Yes, but floating point formats aren't "typical".

> Information on DF16 seems to be sparse, one thing I found was:
> http://discussms.hosting.lsoft.com/SCRIPTS/WA-MSD.EXE?A2=ind0611A&L=DIRECTXDEV&P=R2492&I=-3&d=No+Match%3BMatch%3BMatches
> It says that DF16 returns "real" depth values - which would indeed be
> normalized.
>
Ok, I guess the format could just be named badly, although Chris makes
a good point about precision, even if the values are normalized.

> Some ATI graphics demos (e.g. Toy Shop).
>
If those demos have source, it might be useful to look at that for
hints. At the very least this needs tests to determine if the values
are normalized or not.



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