Cavity option in godot

comblock

In blender, there is a viewport setting called cavity, this make the area around edges a little bit lighter and makes low poly models look way better. When I import the model into godot, the effect is gone (probably because its a setting in blender and not a modifier of the model). is there a simular option in godot?

stone with cavity:

stone without cavity:

option in blender:

Megalomaniak

It is basically a modified ambient occlusion, instead of just making cavities darker it also makes protrusions lighter. I recommend googling for queries such as ambient occlusion glsl shader or cavity glsl shader to learn more.

edit: You should also check out the WorldEnvironment node, it does include a built in default AO.

Calinou

You can bake the cavity map generated by Blender as a texture, then use that texture as Albedo in SpatialMaterial.

Another option would be to use vertex colors with the Bevel modifier. This will require more vertices, but you won't have to bake and distribute a texture that could potentially look blurry when viewed up close.

comblock

Thank you!

comblock

I ended up going with the Bevel option it looks like this:

ernesto

Any chance to reproduce that, but with Godot Shader Language? https://playground.babylonjs.com/#YF8D42

comblock

@ernesto said: Any chance to reproduce that, but with Godot Shader Language?

I'll try, it might be better for performance because I won't have like 5000 unnecessary polygons

OpinionatedGamer

Hope someone finds an easy way to do this, it could be very useful. Baking the textures in blender will work, but it would take a lot of extra time to do it for each object.

comblock

Since blender is open source someone might be able to look at the shader code and use it to write a shader in godot.

TwistedTwigleg

With Godot 4 allowing more GLSL-like code and lower-level GPU shader access (blog post), it's possible that porting the cavity shader to Godot 4 would be more doable than Godot 3, where there might be complications due to the more limited shader language subset (or at very least, less conversion work needed).