2011/12/18 Mathias Fröhlich wrote:
> Good to see!
> And in fact without testing too much I think we are on the right track.
> Just starting and comparing the frame rates with and without the changes gives
> a 3x performance boost on my setup!

Excellent.

> So, since you do not see that huge differences, it appears that your 3D driver
> draws way faster than mine :)
> For reference, what os/gpu/driver do you use?

I've got a NVidia GT260M with 1GB of memory, on Ubuntu 10.4, using the NVidia
195.36.24 driver. Due to a NVidia PowerMizer bug it only runs at 275MHz
rather than 550MHz.

> Just having a very quick look over the code:
> You still have a normal array that has 4 entries and that is set to
> BIND_OVERALL which makes the shader get in the end only the first member for
> every vertex it processes.
> This makes me believe that the normal is no longer used?
> If so, just omit the normal array completely and set the binding to OFF (I
> believe it is called OFF). I think this should work.

Correct, we don't use the normal. I'll make that change and re-test.

One question for the release managers: Do performance improvements such as
these count as bug fixes or features? Should we try to get this into
the 2.6.0 release,
or wait until 2.8.0?

-Stuart

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