IES Improvements

Post by **OnoSendai** » Sat May 05, 2012 4:08 am

Hi all,
We've been working on improving the IES support in Indigo.
A wider range of IES files are now supported, and some IES parsing problems have been fixed. Indigo should now be able to load any somewhat reasonable IES file.

We've also done some work on optimising the rendering when using IES lights, especially for spotlight-type IES files - see the example renders below. Both renders took 30 s. The top image uses the new IES improvements.

rgigante · Post by **rgigante** » Sat May 05, 2012 4:23 am

Well done Nik! Such a vast improvement on sampling IES is really a great news!

tar_gniK · Post by **tar_gniK** » Sat May 05, 2012 4:32 am

Looking good, but at the slight expense of samples/sec?

Zom-B · Post by **Zom-B** » Sat May 05, 2012 7:17 am

This are great improvements and together with the general light sampling enhancements you brought Indigo to the next level.
Congratulations and thanks a lot!!

tar_gniK wrote:Looking good, but at the slight expense of samples/sec?

A better result with less samples

quantity != quality

delle · Post by **delle** » Sat May 05, 2012 6:52 pm

Great! Any enhancement to IES is welcome!

One question: Is it possible to rotate the IES light? E.g. to the ceiling? or toward to a wall?

Can you post the code?

Thank you.

Delle

Zom-B · Post by **Zom-B** » Sat May 05, 2012 7:28 pm

delle wrote:One question: Is it possible to rotate the IES light? E.g. to the ceiling? or toward to a wall?

Its simply controlled by the normal direction of the polygon that emits it... afaik.

suvakas · Post by **suvakas** » Sat May 05, 2012 9:44 pm

Now that is nice !!!

StompinTom · Post by **StompinTom** » Sat May 05, 2012 9:53 pm

Looking good! Is that example done with plain pathtracing?

Whaat · Post by **Whaat** » Mon May 07, 2012 12:51 pm

Great improvements!

galinette · Post by **galinette** » Mon May 07, 2012 4:28 pm

StompinTom wrote:Looking good! Is that example done with plain pathtracing?

I would bet it only improves the bidirectionnal mode

Etienne

lycium · Post by **lycium** » Tue May 08, 2012 6:54 am

galinette wrote:
StompinTom wrote:Looking good! Is that example done with plain pathtracing?
I would bet it only improves the bidirectionnal mode

Etienne

Etienne is right on the money, as always

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