feat(engine) Support all vertex format types in GPUGeometry

[felixpalmer]

For #1847

Background

GPUGeometry assumed that the buffer layout for attributes passed would always be using float32. This is wrong, for example when passing a Uint8Array for colors

Change List

• Add getVertexFormatFromAttribute util funtion
• Update GPUGeometry
• Tests

[ibgreen]

I would prefer if the method that converts array types to data types was separated out into its own function.

getDataTypeFromArray()

We also have similar code in webgl/src/classic/typed-array-utils.ts it would be nice to rewrite that code in terms of those utilities calling these utilities so we only have such switch statements in one place.

In that code I switch on the constructor rather than doing instanceof, I have a hand-wavy sense that instanceof might be slower, but I haven't benched it.

Ideally I think these utilities should have "inverses" so that we can go both ways, and the names and types should be aligned.

[ibgreen]

While I agree with these messages, we should also realize that as nice as it is to add helpful messages to developers, every such string gets bundled into every application built on luma.gl - however as they are just there to speed up debugging, in production applications they would never ever get used.

Because of this, my strategy is usually to write the helpful message in a comment just before the throw clause. Then I throw the minimal string I can, often just an input string. It does not take long for the developer to turn on "break on exceptions", see where luma throws and read the comment.

[ibgreen]

All good, just adding some notes after final read through.

[ibgreen]

I guess one would need two functions: getDataTypeFromTypedArray and getGLFromVertexType

Note to self: "Vertex Type" being "Normalized Data Type" which is indeed confusing - might want to consider renaming VertexType to NormalizedDataType

[ibgreen]

Similarly, one would need the getVertexTypeFromGL