Kray instance problem in LW10

[Janusz Biela]

I think problem is from Quality Tab "Trace Direct Light Reflections", turn OFF this function.
Also GI resolution is too small (1-2 meters is enough for that view)
200.000 photos for that big terrain is definitely too less. I suggest 2.000.000 or more.

[azman_821009]

Thanks Janusz. Will try it very soon.

Anyway here is the latest image rendered with 720p resolution. It took more than 8 hours. This is just a test render and soon will be add a lot of vehicle animate, people walking etc. Any opinion how can I reduce the render speed? I aspect can render it 1 frame 5-9 minutes because I have almost 8000++ frame to render. Should I reduce the trees? Or the polygon of trees?

Thanks.

Azmen

[azman_821009]

I've tried to use your setting in Kray setting but nothing change. Still take too long for rendering.

[Janusz Biela]

I have no idea where is problem. Try put Pixel Order as SCANLINE and watch in which moment Kray has problem with speed render (maybe one surface has strange setup ...)
btw I saw You have HIGH OCTREE , so try LOW or VERY LOW. Maybe You do not have enough RAM memory and most of time render is eat by swap file procedures...

[azman_821009]

I have no idea where is problem. Try put Pixel Order as SCANLINE and watch in which moment Kray has problem with speed render (maybe one surface has strange setup ...)
btw I saw You have HIGH OCTREE , so try LOW or VERY LOW. Maybe You do not have enough RAM memory and most of time render is eat by swap file procedures...

I'm always thinking that possibility it because of the trees. Not sure but more of the trees has very high polygon and some almost a million polygons. Also maybe because of the UV mapping I made for the road?

Not enough memory? OK, my PC spec are Intel i7 extreme 3.33ghz with 6core, 12gb RAM & 1280 MB GDDR5 Nvidia. It's still not enough power to render it? Just confuse about that.

[HappyMantis]

Millions polygons trees seams a LOT for this kind of view! I don't think UVmapping could be a problem regarding render time (except if you have really big map...have you try Indexed Color for your map? It often save a lot of ram). I know it could be a lot of work (depending how much kind of tree you have) but even low poly trees could made the trick here...Have you try a render without the trees?

(Heu by the way, you got here an excellent image! )

[Janusz Biela]

I think is not enough memory Scene is quite big (many objects and difference trees. Try OCTREE LOW or VERY LOW. You can check in Windows Task Manager how much memory You have left when You start scene. If AVAILABLE Physical Memory is low, You find the problem....

[HappyMantis]

Just remember one thing...I know that google 3d models may look like crap at first, but some of them could really be surprising good at render (particularly for a long view like yours) example. Maybe could you have a try with them (fixing texture/color map to match your goal) and if it works, just replace your millions polygons models?

I already have scene which took ages to render due to millions poly trees, and after finding the good sketchup model, render was still nice but A LOT faster....hope it can help!

[azman_821009]

Millions polygons trees seams a LOT for this kind of view! I don't think UVmapping could be a problem regarding render time (except if you have really big map...have you try Indexed Color for your map? It often save a lot of ram). I know it could be a lot of work (depending how much kind of tree you have) but even low poly trees could made the trick here...Have you try a render without the trees?

(Heu by the way, you got here an excellent image! )

Thanks HappyMantis.

Ops! Sorry actually 2-3 type of trees got more than a million polygons. I already reduced it and it got some problem with the texture. I don't have time to check it so just used a original file. OK, about UV mapping, I was read some where from the internet that if the size of image is huge so it will take a time to render it. Anyway what do you meant by 'Indexed Color for the map'?

[Janusz Biela]

Tell me : How big is that uv map? (resolution)

[HappyMantis]

Indexed color is a color mode which reduce the amount of color of a picture, in many cases 256 color picture are enough (yes I didn't believe that at first, but it really work), here's a screenshot of the Photoshop windows (in French sorry):

indexed_color.jpg (14.5 KiB) Viewed 13002 times

I guess that "original file" means evermotion trees? They render nice...but my god, so much polys...maybe let you surprise by low poly models...It should will be few hours of works to win hundred hours of rendering?

[azman_821009]

The size for the site is about 9190 x 9190. For the street I divided to 3 parts but this 3 are almost same size 15000 x 15000.

Anyway I tried reduce the Octree to Low and the result was great (1hour ++) but at least it reduce the time. Now just started render to Very Low Octree. Anyway what is the exactly Octree?

Yes, I was reduced the polygons on the trees but after I render it it looks like problem with the texture. You can see the image on page 1. That's why I change to use a original file. The trees I purchased from http://www.3dmentor.ru.

[Janusz Biela]

OK I think problem is solve. Not enough RAM memory.
http://www.kraytracing.com/wiki/GUI_-_Q ... management

For huge scenes with less memory (under 12 Giga RAM) I suggest use normal or low octree. Of course very low octree means slower render ... but sometimes this option allow to render scene. Imho minimum RAM for Kray is 8 Giga RAM but for comfortable work I suggest minimum 16 Giga RAM (this save time, you can choice high octree, maximum, after that big scenes get rapid (of coarse high octree need a lot memory RAM)
IF you start big scene with normal or high octree and small amount of RAM, your system will start create big swap file so Kray lose time for transport data from RAM to SWAP FILE and back.

[azman_821009]

OK, I understand that but the lower of Octree is Very Low. I rendered it took about 50 minutes? Wow!! Do you have any idea how can I reduce more time for render it? How about the trees like HappyMantis said about that?

Anyway I can't go thru the link. Something like error.

[Janusz Biela]

If you use very low octree , render time can be 2-3 times slower then normal or high octree (depend from scene, if is project is big can be bigger difference...)
So RAM, RAM and RAM