GS/HW: Add continuous and oneshot ROV heuristics.

[TJnotJT]

Description of Changes

Adds heuristics to determine ROV usage:

• Continuous: If average barrier/frame is above a threshold (default 5000) use ROV continuously.
• Oneshot: If the number of barriers in a draw is above a thresold (default 50), use ROV for a single draw (if not alreayd using continuous mode).

Put render pass starting code in DX12/VK into a separate function.

Adds utility functions for doing coarse CPU rasterization of draws to cut down on copy overhead. Currently, only used for the ROV copies in oneshot mode.

Rationale behind Changes

Performance in some system/games are negatively impacted by using ROV continuously, so this attempts to provide less aggressive heuristics for such cases.

The coarse rasterization utilies could possibly be used for other copies such as in DX11 feedback. It might also be useful for reducing barriers with more accurate overlap detection.

Suggested Testing Steps

Use DX12/DX11/VK with ROV enabled in Settings>Graphics>Rendering. The default threshold can be edited in Settings>Graphics>Advanced>ROV Options. Performance testing would be helpful.

Currently, this has been tested with dump runs and performance tested on AMD (thanks @JordanTheToaster).

Did you use AI to help find, test, or implement this issue or feature?

Yes, to brainstorm some ideas for conservative ROV heuristics and reducing copy overhead.

[TJnotJT]

Rebased. Dumps runs appears to be clear on VK, DX12, DX11, though it's hard to verify as many dumps have small differences.

[TJnotJT]

Drafting as there appear to be bugs after the rebase.

[lightningterror]

Need to bump shader cache.

[TJnotJT]

I fixed up the Metal implementation

Thanks for the help! I assume this would resolve the quesion about the render pass shape also?

[TJnotJT]

Rebased and changed the draw config ROV flags to be more intuitive:

• Has[Color|Depth]ROV(): Has either continuous OR oneshot ROV.
• HasOneshot[Color|Depth]ROV(): Has oneshot ROV.
• HasContinuous[Color|Depth]ROV(): Has continuous ROV.

Also added the flags to the draw config outside of the PS selector.

[TellowKrinkle]

I assume this would resolve the quesion about the render pass shape also?

Yes, that's the part where I switched it to render passes.

BTW I noticed something I missed in the Metal implementation so I fixed that

[TJnotJT]

@TellowKrinkle Apologies, I didn't see your last push and ended up force pushing over it. I applied my fixes and yours as two temporary commits at the end.

[TJnotJT]

Tested by @kamfretoz to be working on Metal, so I squashed the temp commits into the Metal port commits.

Keeping as draft until at least one dump run is redone.

[TJnotJT]

Dump run on VK appears to be clear.