implement pipeline cache

src/Ryujinx.Graphics.Metal/Constants.cs

@@ -9,5 +9,10 @@ namespace Ryujinx.Graphics.Metal
         public const int MaxTexturesPerStage = 64;
         public const int MaxCommandBuffersPerQueue = 16;
         public const int MaxTextureBindings = MaxTexturesPerStage * MaxShaderStages;
+        public const int MaxColorAttachments = 8;
+        // TODO: Check this value
+        public const int MaxVertexAttributes = 16;
+        // TODO: Check this value
+        public const int MaxVertexLayouts = 16;
     }
 }

src/Ryujinx.Graphics.Metal/EncoderState.cs

@@ -27,8 +27,6 @@ namespace Ryujinx.Graphics.Metal
     [SupportedOSPlatform("macos")]
     public struct EncoderState
     {
-        public const int MaxColorAttachments = 8;
-
         public MTLFunction? VertexFunction = null;
         public MTLFunction? FragmentFunction = null;
 
@@ -64,7 +62,7 @@ namespace Ryujinx.Graphics.Metal
 
         // Changes to attachments take recreation!
         public MTLTexture DepthStencil = default;
-        public MTLTexture[] RenderTargets = new MTLTexture[MaxColorAttachments];
+        public MTLTexture[] RenderTargets = new MTLTexture[Constants.MaxColorAttachments];
         public Dictionary<int, BlendDescriptor> BlendDescriptors = new();
         public ColorF BlendColor = new();
 

src/Ryujinx.Graphics.Metal/EncoderStateManager.cs

@@ -16,6 +16,8 @@ namespace Ryujinx.Graphics.Metal
         private readonly MTLDevice _device;
         private readonly Pipeline _pipeline;
 
+        private readonly RenderPipelineCache RenderPipelineCache;
+
         private EncoderState _currentState = new();
         private EncoderState _backState = new();
 
@@ -28,6 +30,7 @@ namespace Ryujinx.Graphics.Metal
         {
             _device = device;
             _pipeline = pipeline;
+            RenderPipelineCache = new(device);
         }
 
         public void SwapStates()
@@ -45,7 +48,7 @@ namespace Ryujinx.Graphics.Metal
             // Initialise Pass & State
             var renderPassDescriptor = new MTLRenderPassDescriptor();
 
-            for (int i = 0; i < EncoderState.MaxColorAttachments; i++)
+            for (int i = 0; i < Constants.MaxColorAttachments; i++)
             {
                 if (_currentState.RenderTargets[i] != IntPtr.Zero)
                 {
@@ -131,7 +134,7 @@ namespace Ryujinx.Graphics.Metal
         private void SetPipelineState(MTLRenderCommandEncoder renderCommandEncoder) {
             var renderPipelineDescriptor = new MTLRenderPipelineDescriptor();
 
-            for (int i = 0; i < EncoderState.MaxColorAttachments; i++)
+            for (int i = 0; i < Constants.MaxColorAttachments; i++)
             {
                 if (_currentState.RenderTargets[i] != IntPtr.Zero)
                 {
@@ -198,12 +201,7 @@ namespace Ryujinx.Graphics.Metal
                 renderPipelineDescriptor.FragmentFunction = _currentState.FragmentFunction.Value;
             }
 
-            var error = new NSError(IntPtr.Zero);
-            var pipelineState = _device.NewRenderPipelineState(renderPipelineDescriptor, ref error);
-            if (error != IntPtr.Zero)
-            {
-                Logger.Error?.PrintMsg(LogClass.Gpu, $"Failed to create Render Pipeline State: {StringHelper.String(error.LocalizedDescription)}");
-            }
+            var pipelineState = RenderPipelineCache.GetOrCreate(renderPipelineDescriptor);
 
             renderCommandEncoder.SetRenderPipelineState(pipelineState);
 
@@ -249,7 +247,7 @@ namespace Ryujinx.Graphics.Metal
 
         public void UpdateRenderTargets(ITexture[] colors, ITexture depthStencil)
         {
-            _currentState.RenderTargets = new MTLTexture[EncoderState.MaxColorAttachments];
+            _currentState.RenderTargets = new MTLTexture[Constants.MaxColorAttachments];
 
             for (int i = 0; i < colors.Length; i++)
             {

src/Ryujinx.Graphics.Metal/StateCache.cs

@@ -0,0 +1,178 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.Graphics.GAL;
+using SharpMetal.Foundation;
+using SharpMetal.Metal;
+using System;
+using System.Collections.Generic;
+using System.Runtime.Versioning;
+
+namespace Ryujinx.Graphics.Metal
+{
+    [SupportedOSPlatform("macos")]
+    public abstract class StateCache<T, DescriptorT, HashT>
+    {
+        private Dictionary<HashT, T> Cache = new();
+
+        protected abstract HashT GetHash(DescriptorT descriptor);
+
+        protected abstract T CreateValue(DescriptorT descriptor);
+
+        public T GetOrCreate(DescriptorT descriptor)
+        {
+            var hash = GetHash(descriptor);
+            if (Cache.TryGetValue(hash, out T value))
+            {
+                return value;
+            }
+            else
+            {
+                var newValue = CreateValue(descriptor);
+                Cache.Add(hash, newValue);
+
+                return newValue;
+            }
+        }
+    }
+
+    [SupportedOSPlatform("macos")]
+    public struct RenderPipelineHash
+    {
+        public MTLFunction VertexFunction;
+        public MTLFunction FragmentFunction;
+        public struct ColorAttachmentHash
+        {
+            public MTLPixelFormat PixelFormat;
+            public bool BlendingEnabled;
+            public MTLBlendOperation RgbBlendOperation;
+            public MTLBlendOperation AlphaBlendOperation;
+            public MTLBlendFactor SourceRGBBlendFactor;
+            public MTLBlendFactor DestinationRGBBlendFactor;
+            public MTLBlendFactor SourceAlphaBlendFactor;
+            public MTLBlendFactor DestinationAlphaBlendFactor;
+        }
+        [System.Runtime.CompilerServices.InlineArray(Constants.MaxColorAttachments)]
+        public struct ColorAttachmentHashArray
+        {
+            public ColorAttachmentHash data;
+        }
+        public ColorAttachmentHashArray ColorAttachments;
+        public struct DepthStencilAttachmentHash
+        {
+            public MTLPixelFormat DepthPixelFormat;
+            public MTLPixelFormat StencilPixelFormat;
+        }
+        public DepthStencilAttachmentHash DepthStencilAttachment;
+        public struct VertexDescriptorHash
+        {
+            public struct AttributeHash
+            {
+                public MTLVertexFormat Format;
+                public int Offset;
+                public int BufferIndex;
+            }
+            [System.Runtime.CompilerServices.InlineArray(Constants.MaxVertexAttributes)]
+            public struct AttributeHashArray
+            {
+                public AttributeHash data;
+            }
+            public AttributeHashArray Attributes;
+            public struct LayoutHash
+            {
+                public MTLVertexFormat Format;
+                public int Stride;
+                public int StepFunction;
+                public int StepRate;
+            }
+            [System.Runtime.CompilerServices.InlineArray(Constants.MaxVertexLayouts)]
+            public struct LayoutHashArray
+            {
+                public LayoutHash data;
+            }
+            public LayoutHashArray Layouts;
+        }
+        public VertexDescriptorHash VertexDescriptor;
+    }
+
+    [SupportedOSPlatform("macos")]
+    public class RenderPipelineCache : StateCache<MTLRenderPipelineState, MTLRenderPipelineDescriptor, RenderPipelineHash>
+    {
+        private readonly MTLDevice _device;
+
+        public RenderPipelineCache(MTLDevice device) {
+            _device = device;
+        }
+
+        protected override RenderPipelineHash GetHash(MTLRenderPipelineDescriptor descriptor) {
+            var hash = new RenderPipelineHash();
+
+            // Functions
+            hash.VertexFunction = descriptor.VertexFunction;
+            hash.FragmentFunction = descriptor.FragmentFunction;
+
+            // Color Attachments
+            for (int i = 0; i < Constants.MaxColorAttachments; i++)
+            {
+                var attachment = descriptor.ColorAttachments.Object((ulong)i);
+                hash.ColorAttachments[i] = new RenderPipelineHash.ColorAttachmentHash
+                {
+                    PixelFormat = attachment.PixelFormat,
+                    BlendingEnabled = attachment.BlendingEnabled,
+                    RgbBlendOperation = attachment.RgbBlendOperation,
+                    AlphaBlendOperation = attachment.AlphaBlendOperation,
+                    SourceRGBBlendFactor = attachment.SourceRGBBlendFactor,
+                    DestinationRGBBlendFactor = attachment.DestinationRGBBlendFactor,
+                    SourceAlphaBlendFactor = attachment.SourceAlphaBlendFactor,
+                    DestinationAlphaBlendFactor = attachment.DestinationAlphaBlendFactor
+                };
+            }
+
+            // Depth stencil attachment
+            hash.DepthStencilAttachment = new RenderPipelineHash.DepthStencilAttachmentHash
+            {
+                DepthPixelFormat = descriptor.DepthAttachmentPixelFormat,
+                StencilPixelFormat = descriptor.StencilAttachmentPixelFormat
+            };
+
+            // Vertex descriptor
+            hash.VertexDescriptor = new RenderPipelineHash.VertexDescriptorHash();
+
+            // Attributes
+            for (int i = 0; i < Constants.MaxVertexAttributes; i++)
+            {
+                var attribute = descriptor.VertexDescriptor.Attributes.Object((ulong)i);
+                hash.VertexDescriptor.Attributes[i] = new RenderPipelineHash.VertexDescriptorHash.AttributeHash
+                {
+                    Format = attribute.Format,
+                    Offset = (int)attribute.Offset,
+                    BufferIndex = (int)attribute.BufferIndex
+                };
+            }
+
+            // Layouts
+            for (int i = 0; i < Constants.MaxVertexLayouts; i++)
+            {
+                var layout = descriptor.VertexDescriptor.Layouts.Object((ulong)i);
+                hash.VertexDescriptor.Layouts[i] = new RenderPipelineHash.VertexDescriptorHash.LayoutHash
+                {
+                    Stride = (int)layout.Stride,
+                    StepFunction = (int)layout.StepFunction,
+                    StepRate = (int)layout.StepRate
+                };
+            }
+
+            return hash;
+        }
+
+        protected override MTLRenderPipelineState CreateValue(MTLRenderPipelineDescriptor descriptor)
+        {
+            var error = new NSError(IntPtr.Zero);
+            var pipelineState = _device.NewRenderPipelineState(descriptor, ref error);
+            if (error != IntPtr.Zero)
+            {
+                Logger.Error?.PrintMsg(LogClass.Gpu, $"Failed to create Render Pipeline State: {StringHelper.String(error.LocalizedDescription)}");
+            }
+
+            return pipelineState;
+        }
+    }
+}