Ambient Occlusion Adalah

Ambient Occlusion

Ambient Occlusion is a technique to guess how much lite gets onto the surface based on its occlusion past the environment.

In PlayCanvas, ambient lighting is multiplied past the AO map, both diffuse and specular.

Left: without AO; Right: with Global AO

AO map tin can be of different scale. Due east.g. a texture item AO, showing surface crevices or a globe-calibration AO with large shadowing result of different parts of the model. Large-calibration AO will give more than outcome, information technology commonly matches lightmaps on UV1, and is more important.

Rendering Global AO 

Rendering AO tin can be washed using pop 3D modelling and archviz tools. It is practically same as rendering Lightmap that is described in Lightmapping Department.

With few small differences where special fabric is applied on all geometry that will paint it so it looks like AO, and different settings during rendering into texture.

In 3D’s Max with VRay it is done by creating a material of
VRayDirt
type and
Ambient Occlusion
way, where
radius
can be changed to go desirable results.

This material should be applied on all static geometry that have to be in ambience occlusion map. In 3D’s Max this can be done either by manually applying information technology on individual objects or by using VRay Render Settings, using
Override mtl
property. This fashion private materials are preserved and it makes life easier.

So nosotros demand to get this data out into the texture. In 3D’southward Max this is done by using Render To Texture, same as during Lightmapping rendering, except
output
option should exist using
VRayCompleteMap.

AO Texture does not need to store very detailed information, and visually does non suffers from texture compression artifacts much. So JPEG is economical and is suitable format for it.

Upload to Editor 

Simply upload texture in Editor and apply information technology on Ambient Occlusion slot on materials.

Example 

Y’all can explore example that uses global Ambient Occlusion described to a higher place and its project.

The lighting in this scene is implemented using Lightmap and AO textures and Box Projected IBL (reflections)