init_gpu_resource

[atlv24]

Objective

• Continue render recovery effort Render Recovery #22761
• Reload gpu resources easily

Solution

• Add an extension trait to insert resources on RenderStartup using from_world
• replace almost every usage of init_resource that holds anything derived from a RenderDevice with init_gpu_resource so that it may be reinitialized on recovery
• Note: "almost every" because there is a handful of slightly more involved cases I will leave to a follow ups.

Testing

• render recovery example still crashes, i have a branch with it working that i am just pulling out reviewable bits from
• we should also verify that this doesnt break examples, as it does slightly modify behavior: gpu resources are initialized slightly later than they used to be, because they wait until RenderStartup instead of doing it immediately.
• i mostly want to get the largest part of the change out of the way first

[IQuick143]

Can this get called and fail?

[IQuick143]

Maybe a usage-driven docstring might be helpful?
Something like copying in "Use this for initializing render resources in a render-recovery-aware way."