InputNode: Added .setPrecision()

[sunag]

Related issue: #20297

Description

const nodePI = uniform( Math.PI );

// set high precision
nodePI.setPresicion( 'high' );

[LeviPesin]

Maybe we should move it to UniformNode? Because I don't think precisions are useful for ConstNodes.

[LeviPesin]

By the way, shouldn't we also add some kind of precision-to-type mapping to WebGPU builder?

[sunag]

@LeviPesin Certainly, not sure if WebGPU accepts precision who are not 16 or 32 bits. Maybe high and medium to 32 bits and low to 16bit.
I think we can improve this precision integration using nodes for this, something like:

const nodePI = uniform( Math.PI ).highPrecision();
// or
const nodePI = lowPrecision( uniform( Math.PI ) );

[sunag]

I think that precision can be added contextually.

[LeviPesin]

Maybe high and medium to 32 bits and low to 16bit.

Sounds good to me!

I think we can improve this precision integration using nodes for this, something like:

I think .setPrecision is already fine.