vk: Lazy evaluate renderpass scope #7784
Merged
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Rewrites the Vulkan backend's handling of renderpass open/close scopes. This is made possible by previous commits refactoring renderpasses many months ago, as it would have been impossible before to dynamically open and close renderpasses on a global scale. With the new structure, renderpasses are always assumed to be in the open state and individual API driver calls that require renderpasses to be closed have to manually request to close the current renderpass. This allows the GPU to batch together related draw calls significantly improving rendering efficiency.
See https://youtu.be/iJfulnNr-eI