Support Uniform Buffer Objects in Materials and Postprocessors

[eonarheim]

Context

Currently when building lighting systems, developers need to set multiple uniform values for each light. WebGL 2 and WebGPU have a concept of a Uniform Buffer Object to store a buffer of uniforms. This can be thought of an array of uniforms and greatly simplifies uploading a list of unform values.

Proposal

Update Materials and Postprocessors to support Uniform Buffer Objects

We should add a way to set a UBO on the ex.Shader similar to our other uniform methods.

Suggested Material API TBD.

[github-actions]

This issue hasn't had any recent activity lately and is being marked as stale automatically.