From 8da7c42cf84c7baeae4e4a8cfe8d171f1c5b5139 Mon Sep 17 00:00:00 2001
From: Isaac Marovitz <isaacryu@icloud.com>
Date: Fri, 28 Jul 2023 11:55:52 -0400
Subject: [PATCH] Delete and Get Data from Buffer

---
 src/Ryujinx.Graphics.Metal/MetalRenderer.cs | 25 +++++----------------
 src/Ryujinx.Graphics.Metal/Texture.cs       | 20 ++++++++++++++---
 2 files changed, 23 insertions(+), 22 deletions(-)

diff --git a/src/Ryujinx.Graphics.Metal/MetalRenderer.cs b/src/Ryujinx.Graphics.Metal/MetalRenderer.cs
index e0074351e..1c4db1a01 100644
--- a/src/Ryujinx.Graphics.Metal/MetalRenderer.cs
+++ b/src/Ryujinx.Graphics.Metal/MetalRenderer.cs
@@ -89,22 +89,7 @@ namespace Ryujinx.Graphics.Metal
 
         public ITexture CreateTexture(TextureCreateInfo info)
         {
-            MTLTextureDescriptor descriptor = new()
-            {
-                PixelFormat = FormatCapabilities.ConvertToMTLFormat(info.Format),
-                TextureType = info.Target.Convert(),
-                Width = (ulong)info.Width,
-                Height = (ulong)info.Height,
-                MipmapLevelCount = (ulong)info.Levels,
-                SampleCount = (ulong)info.Samples,
-            };
-
-            return CreateTextureView(info);
-        }
-
-        internal Texture CreateTextureView(TextureCreateInfo info)
-        {
-            throw new NotImplementedException();
+            return new Texture(_device, _pipeline, info);
         }
 
         public bool PrepareHostMapping(IntPtr address, ulong size)
@@ -120,12 +105,14 @@ namespace Ryujinx.Graphics.Metal
 
         public void DeleteBuffer(BufferHandle buffer)
         {
-            throw new NotImplementedException();
+            MTLBuffer mtlBuffer = new(Unsafe.As<BufferHandle, IntPtr>(ref buffer));
+            mtlBuffer.SetPurgeableState(MTLPurgeableState.Empty);
         }
 
-        public PinnedSpan<byte> GetBufferData(BufferHandle buffer, int offset, int size)
+        public unsafe PinnedSpan<byte> GetBufferData(BufferHandle buffer, int offset, int size)
         {
-            throw new NotImplementedException();
+            MTLBuffer mtlBuffer = new(Unsafe.As<BufferHandle, IntPtr>(ref buffer));
+            return new PinnedSpan<byte>(IntPtr.Add(mtlBuffer.Contents, offset).ToPointer(), size);
         }
 
         public Capabilities GetCapabilities()
diff --git a/src/Ryujinx.Graphics.Metal/Texture.cs b/src/Ryujinx.Graphics.Metal/Texture.cs
index 9d7e5e0d0..b03fb26c8 100644
--- a/src/Ryujinx.Graphics.Metal/Texture.cs
+++ b/src/Ryujinx.Graphics.Metal/Texture.cs
@@ -18,7 +18,7 @@ namespace Ryujinx.Graphics.Metal
         public int Width => Info.Width;
         public int Height => Info.Height;
 
-        public Texture(MTLDevice device, Pipeline pipeline, TextureCreateInfo info, int firstLayer, int firstLevel)
+        public Texture(MTLDevice device, Pipeline pipeline, TextureCreateInfo info)
         {
             _device = device;
             _pipeline = pipeline;
@@ -114,9 +114,23 @@ namespace Ryujinx.Graphics.Metal
             throw new NotImplementedException();
         }
 
-        public void SetData(SpanOrArray<byte> data, int layer, int level, Rectangle<int> region)
+        public unsafe void SetData(SpanOrArray<byte> data, int layer, int level, Rectangle<int> region)
         {
-            throw new NotImplementedException();
+            // TODO: Figure out bytesPerRow
+            // For an ordinary or packed pixel format, the stride, in bytes, between rows of source data.
+            // For a compressed pixel format, the stride is the number of bytes from the beginning of one row of blocks to the beginning of the next.
+            if (MTLTexture.IsSparse)
+            ulong bytesPerRow = 0;
+            var mtlRegion = new MTLRegion
+            {
+                origin = new MTLOrigin { x = (ulong)region.X, y = (ulong)region.Y },
+                size = new MTLSize { width = (ulong)region.Width, height = (ulong)region.Height },
+            };
+
+            fixed (byte* pData = data.Span)
+            {
+                MTLTexture.ReplaceRegion(mtlRegion, (ulong)level, (ulong)layer, new IntPtr(pData), bytesPerRow, 0);
+            }
         }
 
         public void SetStorage(BufferRange buffer)