Baking cubemaps inside UE4

EarthQuake

So, I have this idea. I want to load a scene inside of unreal, and then bake a cube map of that scene, save it out, and load into Toolbag to use as lighting data. The basic idea being you could use the lighting you set up in your level to preview a small prop with relatively close lighting in TB2. I'm not sure how well this will work but I think it could be cool.

The problem is I'm an Unreal noob. I know how to load my own cubemaps into UE4 to use them as IBL, but what I'm wondering is:
1. How to bake a cubemap probe
2. Can I save that cubemap probe out? DDS cubemap format would be fine.

EarthQuake

Ok I found and read this: https://docs.unrealengine.com/latest/INT/Engine/Rendering/LightingAndShadows/ReflectionEnvironment/index.html

And I think I generally understand how the probe system works.

However, does anyone know where the actual cubemap probes are stored?

radiancef0rge

You can try using the intel gpa monitor, or renderdoc and take a shot of the game then find that resource if you can't figure it out some other way..

JedTheKrampus

Add a 'Scene Capture Cube' actor to your scene. In the content browser, create a new cube render target (under Materials and Textures.) Assign the render target to your scene capture cube actor. To update the render target, move the scene capture cube actor around. You can also increase the resolution of the capture by opening the texture editor from the content browser, and while you're there it might be a good idea to change the texture compression type to TC_HDR. Once you've done all that, right-click the render target asset in the content browser and export it as HDR, and you should be all set to move it to Toolbag.

If for some reason Toolbag 2 doesn't take equirectangular maps (I wouldn't know since my trial ran out a while ago) you could just drag in six Scene Capture 2D actors and stitch the skybox together from those.

EarthQuake

JedTheKrampus wrote: »

Add a 'Scene Capture Cube' actor to your scene. In the content browser, create a new cube render target (under Materials and Textures.) Assign the render target to your scene capture cube actor. To update the render target, move the scene capture cube actor around. You can also increase the resolution of the capture by opening the texture editor from the content browser, and while you're there it might be a good idea to change the texture compression type to TC_HDR. Once you've done all that, right-click the render target asset in the content browser and export it as HDR, and you should be all set to move it to Toolbag.

If for some reason Toolbag 2 doesn't take equirectangular maps (I wouldn't know since my trial ran out a while ago) you could just drag in six Scene Capture 2D actors and stitch the skybox together from those.

Oh fuck yeah, you rule!

This worked perfectly and was super easy. Thanks!

JedTheKrampus

You're welcome!

dragontiger

Hello That was very usefull. thanks.

I have a question:

There's any way to record a equirectangular animation sequence of the 'Scene Capture Cube' ?

The workaround is screecapture but i'm looking for something better

dragontiger

That was very useful thank you very much.

I have a question:

There is anyway to export the equirectangular animation texture to a image sequence ?

The workaround is screen capture but i'm looking for something better

MaxBayne

i think this will help u 

http://vicsdevblog.blogspot.com/2016/04/if-you-recently-got-htc-vive-or-you-are.html