- Added resource manager

- Shader building now inspects the spir-v for descriptor sets and writes the info to the output binary

Nerfed.Runtime/Resource/Resource.cs

@@ -0,0 +1,9 @@
+namespace Nerfed.Runtime;
+
+public abstract class Resource
+{
+    public string Path { get; internal set; }
+
+    internal abstract void Load(Stream stream);
+    internal abstract void Unload();
+}

Nerfed.Runtime/Resource/ResourceManager.cs

@@ -0,0 +1,43 @@
+namespace Nerfed.Runtime;
+
+public static class ResourceManager
+{
+    private const string rootName = "Resources";
+    private static readonly Dictionary<string, Resource> loadedResources = new Dictionary<string, Resource>();
+
+    public static T Load<T>(string resourcePath) where T : Resource
+    {
+        if (loadedResources.TryGetValue(resourcePath, out Resource resource))
+        {
+            return (T)resource;
+        }
+
+        if (typeof(T) == typeof(Shader))
+        {
+            resource = new Shader();
+        }
+        else
+        {
+            throw new Exception("Failed to create resource");
+        }
+
+        Assert.Always(resource != null);
+        resource.Path = resourcePath;
+        resource.Load(StorageContainer.OpenStream(Path.Combine(AppContext.BaseDirectory, rootName, resourcePath) + ".bin"));
+
+        loadedResources.Add(resourcePath, resource);
+        return (T)resource;
+    }
+
+    public static void Unload(Resource resource)
+    {
+        if (!loadedResources.ContainsKey(resource.Path))
+        {
+            return;
+        }
+
+        resource.Unload();
+        resource.Path = string.Empty;
+        loadedResources.Remove(resource.Path);
+    }
+}

Nerfed.Runtime/Resource/Shader.cs

@@ -0,0 +1,58 @@
+using System.Runtime.InteropServices;
+using RefreshCS;
+
+namespace Nerfed.Runtime;
+
+public class Shader : Resource
+{
+    public IntPtr Handle { get; private set; }
+
+    public uint SamplerCount { get; private set; }
+    public uint StorageTextureCount { get; private set; }
+    public uint StorageBufferCount { get; private set; }
+    public uint UniformBufferCount { get; private set; }
+
+    internal Shader() { }
+
+    internal override unsafe void Load(Stream stream)
+    {
+        using (BinaryReader reader = new BinaryReader(stream))
+        {
+            Refresh.ShaderCreateInfo createInfo;
+            createInfo.Format = (Refresh.ShaderFormat)reader.ReadInt32();
+            createInfo.Stage = (Refresh.ShaderStage)reader.ReadInt32();
+            createInfo.UniformBufferCount = (uint)reader.ReadInt32();
+            createInfo.StorageBufferCount = (uint)reader.ReadInt32();
+            createInfo.StorageTextureCount = (uint)reader.ReadInt32();
+            createInfo.SamplerCount = (uint)reader.ReadInt32();
+
+            int byteCodeSize = reader.ReadInt32();
+            void* byteCodeBuffer = NativeMemory.Alloc((nuint)byteCodeSize);
+            Span<byte> byteCodeSpan = new Span<byte>(byteCodeBuffer, byteCodeSize);
+
+            int bytesRead = 0;
+            while (bytesRead < byteCodeSize)
+            {
+                bytesRead += reader.Read(byteCodeSpan.Slice(bytesRead));
+            }
+
+            createInfo.CodeSize = (nuint)byteCodeSize;
+            createInfo.Code = (byte*)byteCodeBuffer;
+            createInfo.EntryPointName = "main";
+
+            Handle = Refresh.Refresh_CreateShader(Engine.GraphicsDevice.Handle, createInfo);
+            NativeMemory.Free(byteCodeBuffer);
+
+            SamplerCount = createInfo.SamplerCount;
+            StorageTextureCount = createInfo.StorageTextureCount;
+            StorageBufferCount = createInfo.StorageBufferCount;
+            UniformBufferCount = createInfo.UniformBufferCount;
+        }
+    }
+
+    internal override void Unload()
+    {
+        Refresh.Refresh_ReleaseShader(Engine.GraphicsDevice.Handle, Handle);
+        Handle = IntPtr.Zero;
+    }
+}

Nerfed.Runtime/Resource/StorageContainer.cs

@@ -0,0 +1,9 @@
+namespace Nerfed.Runtime;
+
+public static class StorageContainer
+{
+    public static Stream OpenStream(string file)
+    {
+        return File.Open(file, FileMode.Open);
+    }
+}