OTOY Forums

Hi guys,
Im trying out the latest RC version and I'm very glad with all the improvements. Here are a couple of tests I just ran for 1 minute each, the first one with an hdr image as background and the 2nd one using Octane's sunlight system:


I do have a couple of questions though. Notice on the second version (sunlight) how some weird shadows are casted on the brick walls on the left. It seems like a smoothing problem? It doesn't occur with the hdri version.
And the second one, if I try to go for a higher render resolution than 1024x768 octane crashes and quits. Can it be due to the low specs of my videocard? Will a better videocard (like a gtx 2 series) solve this situation or is it a program bug?

cheers,
Alvaro

water on second one for sure is wrong .

split the edges near Your HARD EDGES if You know what I mean, and You will have correct shadows ( its becouse You have only one or really low number of polys between those HARD EDGES on brick ,and You got it even on white walls )

Yea its smoothing - if You have flat surface You can turn it off to see if Im right.

and on hdri they are wrong too you can see black artifacts

afecelis wrote: if I try to go for a higher render resolution than 1024x768 octane crashes and quits.

How much memory You got left after setting up the final scene?? If You tell me I will help

thanks for replying mlody47

I'll try both, adding an edge split modifier to those meshes in particular, or setting them to "solid" to see if it makes any difference.
About memory left, here's a screenie of my 9800gt:

Please let me know what you've learned through your personal experience

regards,
Alvaro

EDITED: I just re-checked my scene and indeed the brick material was set as "smooth" in octane (also the white walls). Unchecking the smooth option in this material fixed the weird smoothing generated shadows
About the water, I can't see what's wrong in it since it's the same material in both the hdri and the sunlight scenes. I've set it up as a regular specular glass. I'll try digging the forums a bit on water materials.

Water is much darker with sunlight , but I dont know why.

I noticed when You hit something about 80% of Your GPU memory after setting all up, rendering even 300px wider image is a problem ( I dont know how about the RC1 ) . Try to optimize the scene as much as You can ( textures can give You some space , maybe remove 2 ppl or try remove half of thier geometry, interior maybe )

On my old 8800GTX I was loading 500000 triangles without textures, very small HDRI and 1280X640 it was all it could give me

You were trying registry fix??

Registry fix? no no, what registry fix?
And your 8800gtx is more powerful than what I got now

Hopefully tomorrow I'll be getting my new gtx260 so I'll be able to run some tests with it and see if it makes things a bit better. Bet your gtx295 lets you render anything at any size huh?

thanks for your comments.

The water is dark because of a transparency issue with sunlight that should be fixed in another release…
Right now Sunlight does not take transparency in acount. As all faces is double sided in Octane, the water pool face casts its shadow inside the pool.
BTW: Interesting Archviz scene for testing.

Ok theres no need for registry fix since its implemented in RC1.

tommorow you will feel the real power of this software

I got 1700MB on this gtx , but its using memory of one gpu 876MB :/ So nothing really fancy , but speeds are awesome

he still has to do the registry fix, it's not included in the RC yet,

it's here: http://www.refractivesoftware.com/forum ... f=21&t=824

Radiance

Thanks Radiance, I'll add those keys to the registry, but which of the 2? Paq's (1 entry) or Sam's (3 entries).