tu: GPL support is broken

Not entirely sure what's wrong, but the trace from #9589 (closed) doesn't render anything when using ZINK_DEBUG=optimal_keys to ignore the lack of line stipple.

cc @cwabbott0

added turnip label

Pretty much every glcts test fails with this, so the problem is bigger than I thought.

Issues I reported It was a bigger issue than I thought... T_T

This is a zink bug. Zink doesn't set VkPipelineColorBlendStateCreateInfo::attachmentCount when ds3 is enabled, even though it's required. There's no dynamic color attachment count bit. ATM we use that even in the dynamic case, because it's easier to share code with the static (precompiled) blend case that way.

Technically VkPipelineColorBlendStateCreateInfo::attachmentCount is implicitly ignored when the rest of the blend state is dynamic. The spec will soon (probably this week) make that ignoring explicit, so you should fix your driver.

Ok, I guess this is going to require some changes to the runtime then. It's currently written assuming that attachment count is always specified.

I believe in your ability to muscle through this.

Sounds like you're signing up to review !24957 (merged) then.

mentioned in merge request !24957 (merged)

closed with commit ceb1d817