Blackmagic Forum

I'm trying to find how to use an HDRI light probe with fusion to light 3D elements in a scene. I don't need reflection or refraction, just the scene lighting to be based on the environment map.

Help!

Place spotlights that match the environment map. Or write your own shader. Would it be enough to do the shadows with AO?

Hey Chad.

Seems as if your shader-writing-capabilities could be of some really helpful use here...

So this functionality doesn't exist in Fusion? That kinda boggles my mind. Every 3D app does it. Nuke does it. Arg!!

Are you talking about environment lights in Nuke? That's just a spherical reflection map, not actual lighting. You can do that easily in Fusion with the Reflect material.

I'm referring to the environment light node in Nuke that can take an HDRI map and use that to light the scene. Not just reflections.

That's the one I mean. You can only use it with reflective surfaces. That should give you a hint as to what it actually does.

I have a specular convolution shader that can take a cubemap or spheremap and make a Lambertian (or a custom BRDF) "bake" of the lighting using Fusion UV Renderer. But if you wanted to try it on your own, we have the tool for that too.

But using the UV-Renderer means that one has to do this for each object in the scene individually, right?
Plus, baking isn't too dynamic with moving objects, unless you bake every frame...
So, yeah, a real HDR-Lighting tool would be swell indeed!

I think a third part render engine could resolve this and other tons of material/light issues for this comp software. We need a confortable jump ahead in this and other fronts and third parts are welcome...a BMD faster development more than welcome

There is a script that can create a light array from an image, that can be used to light the scene with color from the image

http://www.steakunderwater.com/VFXPedia ... mps/Fu5/3D

Look for the fake GI comp

Eric Westphal wrote:But using the UV-Renderer means that one has to do this for each object in the scene individually, right?
Plus, baking isn't too dynamic with moving objects, unless you bake every frame...
So, yeah, a real HDR-Lighting tool would be swell indeed!

You don't have to bake, no. But you said light probe, which implies baking.