Vulkan: Migrate buffers between memory types to improve GPU performance (#4540)

* Initial implementation of migration between memory heaps

- Missing OOM handling
- Missing `_map` data safety when remapping
  - Copy may not have completed yet (needs some kind of fence)
  - Map may be unmapped before it is done being used. (needs scoped access)
- SSBO accesses are all "writes" - maybe pass info in another way.
- Missing keeping map type when resizing buffers (should this be done?)

* Ensure migrated data is in place before flushing.

* Fix issue where old waitable would be signalled.

- There is a real issue where existing Auto<> references need to be replaced.

* Swap bound Auto<> instances when swapping buffer backing

* Fix conversion buffers

* Don't try move buffers if the host has shared memory.

* Make GPU methods return PinnedSpan with scope

* Storage Hint

* Fix stupidity

* Fix rebase

* Tweak rules

Attempt to sidestep BOTW slowdown

* Remove line

* Migrate only when command buffers flush

* Change backing swap log to debug

* Address some feedback

* Disallow backing swap when the flush lock is held by the current thread

* Make PinnedSpan from ReadOnlySpan explicitly unsafe

* Fix some small issues

- Index buffer swap fixed
- Allocate DeviceLocal buffers using a separate block list to images.

* Remove alternative flags

* Address feedback

1 files changed, 3 insertions, 1 deletions

diff --git a/Ryujinx.Graphics.Vulkan/MemoryAllocatorBlockList.cs b/Ryujinx.Graphics.Vulkan/MemoryAllocatorBlockList.cs
index dc3eb598..e564cb26 100644
--- a/Ryujinx.Graphics.Vulkan/MemoryAllocatorBlockList.cs
+++ b/Ryujinx.Graphics.Vulkan/MemoryAllocatorBlockList.cs
@@ -162,15 +162,17 @@ namespace Ryujinx.Graphics.Vulkan
         private readonly Device _device;
 
         public int MemoryTypeIndex { get; }
+        public bool ForBuffer { get; }
 
         private readonly int _blockAlignment;
 
-        public MemoryAllocatorBlockList(Vk api, Device device, int memoryTypeIndex, int blockAlignment)
+        public MemoryAllocatorBlockList(Vk api, Device device, int memoryTypeIndex, int blockAlignment, bool forBuffer)
         {
             _blocks = new List<Block>();
             _api = api;
             _device = device;
             MemoryTypeIndex = memoryTypeIndex;
+            ForBuffer = forBuffer;
             _blockAlignment = blockAlignment;
         }