Support for resources on non-contiguous GPU memory regions (#1905)

* Support for resources on non-contiguous GPU memory regions

* Implement MultiRange physical addresses, only used with a single range for now

* Actually use non-contiguous ranges

* GetPhysicalRegions fixes

* Documentation and remove Address property from TextureInfo

* Finish implementing GetWritableRegion

* Fix typo

Ryujinx.Graphics.Gpu/Memory/GpuRegionHandle.cs

@@ -0,0 +1,60 @@
+using Ryujinx.Cpu.Tracking;
+using Ryujinx.Memory.Tracking;
+using System;
+
+namespace Ryujinx.Graphics.Gpu.Memory
+{
+    class GpuRegionHandle : IRegionHandle
+    {
+        private readonly CpuRegionHandle[] _cpuRegionHandles;
+
+        public bool Dirty
+        {
+            get
+            {
+                foreach (var regionHandle in _cpuRegionHandles)
+                {
+                    if (regionHandle.Dirty)
+                    {
+                        return true;
+                    }
+                }
+
+                return false;
+            }
+        }
+
+        public ulong Address => throw new NotSupportedException();
+        public ulong Size => throw new NotSupportedException();
+        public ulong EndAddress => throw new NotSupportedException();
+
+        public GpuRegionHandle(CpuRegionHandle[] cpuRegionHandles)
+        {
+            _cpuRegionHandles = cpuRegionHandles;
+        }
+
+        public void Dispose()
+        {
+            foreach (var regionHandle in _cpuRegionHandles)
+            {
+                regionHandle.Dispose();
+            }
+        }
+
+        public void RegisterAction(RegionSignal action)
+        {
+            foreach (var regionHandle in _cpuRegionHandles)
+            {
+                regionHandle.RegisterAction(action);
+            }
+        }
+
+        public void Reprotect()
+        {
+            foreach (var regionHandle in _cpuRegionHandles)
+            {
+                regionHandle.Reprotect();
+            }
+        }
+    }
+}