src/Ryujinx.Graphics.GAL/IRenderer.cs

@@ -15,6 +15,8 @@ namespace Ryujinx.Graphics.GAL
         IWindow Window { get; }
 
         uint ProgramCount { get; }
+        
+        GraphicsBackend Backend { get; }
 
         void BackgroundContextAction(Action action, bool alwaysBackground = false);
 

src/Ryujinx.Graphics.GAL/Multithreading/ThreadedRenderer.cs

@@ -72,6 +72,8 @@ namespace Ryujinx.Graphics.GAL.Multithreading
 
         public IRenderer BaseRenderer => _baseRenderer;
 
+        public GraphicsBackend Backend => _baseRenderer.Backend;
+
         public bool PreferThreading => _baseRenderer.PreferThreading;
 
         public ThreadedRenderer(IRenderer renderer)

src/Ryujinx.Graphics.Gpu/Engine/Threed/ComputeDraw/VtgAsComputeContext.cs

@@ -1,4 +1,5 @@
 using Ryujinx.Common;
+using Ryujinx.Common.Configuration;
 using Ryujinx.Graphics.GAL;
 using System;
 using System.Collections.Generic;
@@ -11,6 +12,8 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed.ComputeDraw
     /// </summary>
     class VtgAsComputeContext : IDisposable
     {
+        private const int DummyBufferSize = 16;
+        
         private readonly GpuContext _context;
 
         /// <summary>
@@ -46,7 +49,9 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed.ComputeDraw
                         1,
                         1,
                         1,
-                        format.GetBytesPerElement(),
+                        renderer.Backend is GraphicsBackend.Metal 
+                            ? format.GetBytesPerElement() 
+                            : 1,
                         format,
                         DepthStencilMode.Depth,
                         Target.TextureBuffer,
@@ -518,6 +523,21 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed.ComputeDraw
         {
             return new BufferRange(_geometryIndexDataBuffer.Handle, offset, size, write);
         }
+        
+        /// <summary>
+        /// Gets the range for a dummy 16 bytes buffer, filled with zeros.
+        /// </summary>
+        /// <returns>Dummy buffer range</returns>
+        public BufferRange GetDummyBufferRange()
+        {
+            if (_dummyBuffer == BufferHandle.Null)
+            {
+                _dummyBuffer = _context.Renderer.CreateBuffer(DummyBufferSize, BufferAccess.DeviceMemory);
+                _context.Renderer.Pipeline.ClearBuffer(_dummyBuffer, 0, DummyBufferSize, 0);
+            }
+
+            return new BufferRange(_dummyBuffer, 0, DummyBufferSize);
+        }
 
         /// <summary>
         /// Gets the range for a sequential index buffer, with ever incrementing index values.

src/Ryujinx.Graphics.Gpu/Engine/Threed/ComputeDraw/VtgAsComputeState.cs

@@ -1,4 +1,5 @@
 using Ryujinx.Common;
+using Ryujinx.Common.Configuration;
 using Ryujinx.Common.Logging;
 using Ryujinx.Graphics.GAL;
 using Ryujinx.Graphics.Gpu.Engine.Types;
@@ -147,6 +148,9 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed.ComputeDraw
                 {
                     _vacContext.VertexInfoBufferUpdater.SetVertexStride(index, 0, componentsCount);
                     _vacContext.VertexInfoBufferUpdater.SetVertexOffset(index, 0, 0);
+                    if (_context.Renderer.Backend is not GraphicsBackend.Metal)
+                        SetDummyBufferTexture(_vertexAsCompute.Reservations, index, format);
+                    
                     continue;
                 }
 
@@ -162,6 +166,9 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed.ComputeDraw
                 {
                     _vacContext.VertexInfoBufferUpdater.SetVertexStride(index, 0, componentsCount);
                     _vacContext.VertexInfoBufferUpdater.SetVertexOffset(index, 0, 0);
+                    if (_context.Renderer.Backend is not GraphicsBackend.Metal)
+                        SetDummyBufferTexture(_vertexAsCompute.Reservations, index, format);
+                    
                     continue;
                 }
 
@@ -340,6 +347,20 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed.ComputeDraw
         {
             return maxOutputVertices / verticesPerPrimitive;
         }
+        
+        /// <summary>
+        /// Binds a dummy buffer as vertex buffer into a buffer texture.
+        /// </summary>
+        /// <param name="reservations">Shader resource binding reservations</param>
+        /// <param name="index">Buffer texture index</param>
+        /// <param name="format">Buffer texture format</param>
+        private readonly void SetDummyBufferTexture(ResourceReservations reservations, int index, Format format)
+        {
+            ITexture bufferTexture = _vacContext.EnsureBufferTexture(index + 2, format);
+            bufferTexture.SetStorage(_vacContext.GetDummyBufferRange());
+
+            _context.Renderer.Pipeline.SetTextureAndSampler(ShaderStage.Compute, reservations.GetVertexBufferTextureBinding(index), bufferTexture, null);
+        }
 
         /// <summary>
         /// Binds a vertex buffer into a buffer texture.

src/Ryujinx.Graphics.Metal/MetalRenderer.cs

@@ -31,6 +31,8 @@ namespace Ryujinx.Graphics.Metal
         public IPipeline Pipeline => _pipeline;
         public IWindow Window => _window;
 
+        public GraphicsBackend Backend => GraphicsBackend.Metal;
+
         internal MTLCommandQueue BackgroundQueue { get; private set; }
         internal HelperShader HelperShader { get; private set; }
         internal BufferManager BufferManager { get; private set; }

src/Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs

@@ -20,6 +20,8 @@ namespace Ryujinx.Graphics.OpenGL
         private readonly Window _window;
 
         public IWindow Window => _window;
+        
+        public GraphicsBackend Backend => GraphicsBackend.OpenGl;
 
         private readonly TextureCopy _textureCopy;
         private readonly TextureCopy _backgroundTextureCopy;

src/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs

@@ -29,7 +29,9 @@ namespace Ryujinx.Graphics.Vulkan
 
         private bool _initialized;
 
-        public uint ProgramCount { get; set; } = 0;
+        public uint ProgramCount { get; set; }
+        
+        public GraphicsBackend Backend => GraphicsBackend.Vulkan;
 
         internal FormatCapabilities FormatCapabilities { get; private set; }
         internal HardwareCapabilities Capabilities;

src/Ryujinx/Assets/locales.json

@@ -22998,4 +22998,4 @@
       }
     }
   ]
-}
+}