RFR: 8271024: Implement macOS Metal Rendering Pipeline [v6]

[Ambarish Rapte]

On Wed, 2 Jul 2025 14:58:34 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

> > Is `mtl` a good name for the `prism.order` property? Should it be `metal`?
> 
> "mtl" is sometimes used a short for "material", which has overlapping context here. I'd prefer the explicit "metal".

mtl was chose because
- It aligns with our existing abbreviated names for pipelines like d3d, es2, sw
- The metal library also uses 'MTL' as prefix all metal library types like MTLDevice, MTLCommandQueue, MTLCommandBuffer and more..

I think It would feel relevant in the context of `-Dprism.order`

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PR Comment: https://git.openjdk.org/jfx/pull/1824#issuecomment-3032155165