Unreal 4 Engine

AdamB · 31 Aug 2014, 10:15

Here's a (realtime) video of how the model was rigged ready for exporting movies.

Krisidious · 31 Aug 2014, 10:27

Very nice Adam... I ran both movies side by side and saw little difference that wasn't modeling.

cmeed · 3 Sept 2014, 10:17

Adam They look Great!
Does Lightup have the ability regarding textures to ..... mmm how to explain it (they'll be a word or phase for it) so in Koolaas the textures reflect a roughness so some parts reflect smooth and some rough. the corridor for instance in the movie shows this

heres another example of Unreal 4 - its german
http://www.gamestar.de/videos/trailer,3/unreal-engine-4,76683.html

c

cmeed · 3 Sept 2014, 10:21

here it is found it on youtube

cmeed · 3 Sept 2014, 10:29

Another Koolaa inspired by RobertPencil

AdamB · 4 Sept 2014, 13:40

@cmeed said:

Adam They look Great!
Does Lightup have the ability regarding textures to ..... mmm how to explain it (they'll be a word or phase for it) so in Koolaas the textures reflect a roughness so some parts reflect smooth and some rough. the corridor for instance in the movie shows this

heres another example of Unreal 4 - its german
http://www.gamestar.de/videos/trailer,3/unreal-engine-4,76683.html

c

Sure, its called a specular map and controls which parts of the texture reflect. LightUp creates one automatically for you from your base texture based on grayscale brightness. If you need (or have) something different, you can set a filename with an image. See this video: https://www.youtube.com/watch?v=22FSi1aT2bg (around 10m30s in).

Adam

solo · 4 Sept 2014, 14:56

Architecture Real-time - Unreal Engine 4

Frederik · 4 Sept 2014, 15:33

@solo said:

Architecture Real-time - Unreal Engine 4

miikka1978 · 30 Jan 2015, 03:40

One more Unreal Engine Architecture video.

olishea · 30 Jan 2015, 11:40

wow

jenujacob · 4 Mar 2015, 10:16

now especially since Unreal engine is now free, we should be seeing more arch viz from this platform.

solo · 4 Mar 2015, 11:56

@jenujacob said:

now especially since Unreal engine is now free, we should be seeing more arch viz from this platform.

That is just it, we are on a Sketchup forum discussing a new engine but there does not seem to be any support for skp files, so how will the workflow go?

I am very interested in using Unreal but I refuse to have to use a 3rd party software to bridge the two as it makes no sense to complicate my workflow.

So, the challenge goes out as to how SKP and Unreal can work together or if if can.

Rich O Brien · 4 Mar 2015, 13:13

You could use the SDKs of both apps to make a direct pipeline between both.

There's probably one already out there.

I wonder how lightup fbx export would work? It is used a lot in Unity from what I understand.

kaas · 4 Mar 2015, 13:31

@solo said:

... so how will the workflow go?... the challenge goes out as to how SKP and Unreal can work together or if if can.

I just tried Unreal using this workflow:

meters as unit in Sketchup
fbx output from Sketchup.
textures used were in size n2 (512x512 for instance)

Import the fbx in Unreal:

place the mesh in the scene, rescale if needed
refine / add more objects and save selected overwrite the fbx file in Sketchup and re-import in Unreal. no need to re-scale and material settings (bump / reflection in Unreal)are preserved.

Works nicely for a simple scene. What kind of problems / challenges are you expecting?

cmeed · 4 Mar 2015, 19:38

The latest Unreal includes better uv unwrapping. Suitable for simple geometry such as walls and floors etc. I'm not sure of the details but what was lacking before was uvs and a 2nd uv channel when the fbx exported from SU. I think this is now generated and simple unwrapping is done in unreal. I have managed to get a model in and lit. I only played for 10mins or so when I heard about the new feature.
But it can't handle unwrapping anything complicated like a person.

solo · 4 Mar 2015, 21:58

So from a brief dig around I see Unreal only imports fbx and obj meshes, and so far I have not been successful importing materials, some translate but most do not.

What is needed is an exporter of some sort.

miikka1978 · 6 Mar 2015, 09:12

I have been experimenting just a little with Game Engines. My understanding has been that Sketchup files don’t work that well with game Engines because the models need to be UV mapped properly. Therefore, I have assumed that it is always need to have tome 3rd party tool to do the UV mapping, for example Blender. Anyway, I am still novice with these so please correct if I am wrong.

cmeed · 6 Mar 2015, 10:13

miikka1978 - previousily the workflow has needed an extra software to generate uv maps but the latest builds 4.5 (I think) onwards have had a new way of uv mapping on the import but only on simple geometry.
I still don't think it's a full proof. Or do I think, we as sketchup users, are going to be blessed by the makers with an easy way in.
The software ooks incredible to me. There are many arch viz people showing work on their forum and they've even opened a dedicated arch viz forum. So its encouraging

kaas · 6 Mar 2015, 10:36

@miikka1978 said:

.. My understanding has been that Sketchup files don’t work that well with game Engines because the models need to be UV mapped properly....

You're right. I've been playing with the Unreal engine for a bit. It's a game engine and it expects the uvmaps to be properly and uniquely layed out (do a google search for uvmaps in google-images to get an idea).

When textures are used in Sketchup they are stored and Unreal reads them as UV channel 0. Unreal can create lightmaps and stores them in UV channel 1. So when doing a lighting calculation Unreal looks for a UV channel 1. If there is no mapping info in UV channel 1 (in Sketchup you can't create it), Unreal duplicates the UV channel 0 data into channel 1 and tries to store the lightmap data in there.
And that's where you also run into problems with Sketchup. The UV coords for anything that's slightly more complex than a box, a floor or some walls aren't uniquely layed out by Sketchup but overlapping (see image: uvmaps in Roadkill for stairs). So the lighting data gets stored overlapping also and it results in errors and a visual mess.

If you somehow can uniquely lay out the mapping in Sketchup for objects you should be fine.

Still investigating...

cmeed · 6 Mar 2015, 11:04

Kaas: have you had much success using roadkill? so what happens after you use road kill? what do you have - an .fbx to import?