Indigo Renderer Forum

Hi Whaat, hi all.

I see something is happening when working with clipmaps. Here's the reference image:


In the scene there are 2 trees behind the camera, both of them are simple b/w images mapped onto a plane; same texture used as albedo and clip map. If you have a look to the borders of the shadows you'll see that there are a lot of fireflies, and that's a thing which I noticed in the past also. Since it's not one of my rendering priorities, I simply waited for someone to fix it.

It has not been fixed, so I am here.

Is there a way to adjust some settings or something? Thank you!

Pibuz wrote: In the scene there are 2 trees behind the camera, both of them are simple b/w images mapped onto a plane; same texture used as albedo and clip map. If you have a look to the borders of the shadows you'll see that there are a lot of fireflies, and that's a thing which I noticed in the past also. Since it's not one of my rendering priorities, I simply waited for someone to fix it.

It has not been fixed, so I am here.

Is there a way to adjust some settings or something? Thank you!

I think the fireflies would be be reduced or eliminated by enabling 'step blend'. Sorry but this feature has not yet been added to SkIndigo but I may add it for the next version.

As a workaround, you could create a blend material using the Indigo Material editor (blend of diffuse and null) and then enable 'step blend'. Then, create a 'linked IGM' material in SkIndigo that links to this material. Make sense?

Sounds like a tricky workaround to me..
I have no hurry for this so I can wait for the step blend option with no problem at all.

I did another test rendering with hybrid mode and it all came fine.
I suggest you add the option anyway.

Yup, you definitely want to enable 'step blend'

This is the test calculated in Hybrid mode.
I added a second model of weed just to test that out.

Man, I'm loving that grass pibuz! Looks awesome - any chance of sharing the model/source for sketchup?

No problem at all. Once I've found the skp file again!
My aim was to make a little tut out of this, and THEN share the skp as a base for the tut...but I can share the model first anyway. Give me a couple days!

Done. Visit my blog and go to the download section. If you don't speak italian, you'll tell the right topic from the image

Heh, cheers pibuz

I'll have to download at home - for some reason my work is blocking access to your downloads link 'category gambling'.....

Pibuz wrote:Done. Visit my blog and go to the download section. If you don't speak italian, you'll tell the right topic from the image

thanks Pibuz! You are great!
BTW I have a question for You (maybe it is a little bit off topic - sorry) how do you replace complex weed model with those boxes (dummies)? I thought i know sketchup pretty well, but i can't figure this out...

That's a very simple procedure to make very heavy scenes to be easily handleable.
1. You have a heavy component named for example "grassweed"
2. ENABLE INSTANCING over the heavy component
3. MAKE A SIMPLE COMPONENT (its dimensions should be similar to the "grassweed" component bounding box)
4. Name it "grassweed_dummy"
5. ENABLE INSTANCING over "grassweed_dummy"
6. (MAKE THE SCENE NAVIGATION LIGHTER, HIDING THE HEAVY COMPONENT)
7. SPREAD AROUND "GRASSWEED_DUMMY".

Thank You.
You are useful as always.
I knew that there was something like "instancing enable/disable" in skindigo options, but I missunderstood all idea. Now thanks to You it's all clear. I belive that the rule for naming instaces is always "component-name_dummy", right?

Exactly

wojtek-w wrote:Thank You.
You are useful as always.
I knew that there was something like "instancing enable/disable" in skindigo options, but I missunderstood all idea. Now thanks to You it's all clear. I belive that the rule for naming instaces is always "component-name_dummy", right?

Correct.

Perhaps not important for organic stuf like this, but don't forget if you want your dummys to appear in a specific position, you might need to alter the component axis to match a reference point on the original component.

For example, I've been using dummys to render multiple cars in a car park and I want them all to appear within the parking spaces, so I have to set the source component axis on the corner of the parking space and then set the dummy axis on the corner of the dummy box - this means I know that putting the origin of the dummy component on the corner of the space results in a dummy car rendering in the correct position within the parking space.

If that makes any sense!