Initial work

Ryujinx.Graphics.Gpu/Image/SamplerPool.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Graphics.Gpu.Image
+{
+    class SamplerPool : Pool<Sampler>
+    {
+        public SamplerPool(GpuContext context, ulong address, int maximumId) : base(context, address, maximumId) { }
+
+        public override Sampler Get(int id)
+        {
+            if ((uint)id >= Items.Length)
+            {
+                return null;
+            }
+
+            SynchronizeMemory();
+
+            Sampler sampler = Items[id];
+
+            if (sampler == null)
+            {
+                ulong address = Address + (ulong)(uint)id * DescriptorSize;
+
+                Span<byte> data = Context.PhysicalMemory.Read(address, DescriptorSize);
+
+                SamplerDescriptor descriptor = MemoryMarshal.Cast<byte, SamplerDescriptor>(data)[0];
+
+                sampler = new Sampler(Context, descriptor);
+
+                Items[id] = sampler;
+            }
+
+            return sampler;
+        }
+
+        protected override void InvalidateRangeImpl(ulong address, ulong size)
+        {
+            ulong endAddress = address + size;
+
+            for (; address < endAddress; address += DescriptorSize)
+            {
+                int id = (int)((address - Address) / DescriptorSize);
+
+                Sampler sampler = Items[id];
+
+                if (sampler != null)
+                {
+                    sampler.Dispose();
+
+                    Items[id] = null;
+                }
+            }
+        }
+
+        protected override void Delete(Sampler item)
+        {
+            item?.Dispose();
+        }
+    }
+}