WebGPURenderer: Add preferWebGL parameter.

[RenaudRohlinger]

Add a new parameter to the WebGPURenderer to force the WebGL backend even if WebGPU is available.

Example usage:

const renderer = new WebGPURenderer( { preferWebGL: true } );

This contribution is funded by Utsubo

[sunag]

What do you think of forceWebGL?

[LeviPesin]

Why not just new Renderer( new WebGLBackend( ... ) )?

[RenaudRohlinger]

What do you think of forceWebGL?
I'm fine with it 👍

Why not just new Renderer( new WebGLBackend( ... ) )?

I'd say that this feels a lot easier to use:

import WebGPURenderer

new WebGPURenderer( { forceWebGL: overrideInASpecificCase })

than:

import Renderer
import WebGLBackend
import WebGPURenderer

if ( overrideInASpecificCase ) {

renderer = new Renderer( new WebGLBackend( ... ) )

} else {

renderer = new WebGPURenderer()

}