Improved error message for device mismatch exception

src/ComputeSharp.Graphics/Exceptions/GraphicsDeviceMismatchException.cs

@@ -23,9 +23,21 @@ private static string GetExceptionMessage(GraphicsDevice device, GraphicsResourc
  {
  StringBuilder builder = new StringBuilder();
  builder.AppendLine("Invalid pairing of graphics devices used to run a compute shader and allocate memory buffers.");
- builder.AppendLine($"The target device to run the compute shader is \"{device.Name}\" (id: {device.NativeDevice.AdapterLuid}).");
- builder.AppendLine($"The buffer of type {resource.GetType().ToFriendlyString()} was allocated on device \"{resource.GraphicsDevice.Name}\" (id: {resource.GraphicsDevice.NativeDevice.AdapterLuid}).");
- builder.AppendLine("Make sure to always allocate buffers on the same device used to actually run the code that accesses them.");
+
+ // Check if the device is effectively the same but with two instances pointing to the same adapter
+ if (device.NativeDevice.AdapterLuid == resource.GraphicsDevice.NativeDevice.AdapterLuid)
+ {
+ builder.AppendLine("The graphics devices used to allocate buffers and run the shader must be the same instance, not just be using the same physical device.");
+ builder.AppendLine("You can still run different shaders on different devices, but a shader run on one device must only use buffers allocated by the same device instance.");
+ }
+ else
+ {
+ // Actually different devices
+ builder.AppendLine($"The target device to run the compute shader is \"{device.Name}\" (id: {device.NativeDevice.AdapterLuid}).");
+ builder.AppendLine($"The buffer of type {resource.GetType().ToFriendlyString()} was allocated on device \"{resource.GraphicsDevice.Name}\" (id: {resource.GraphicsDevice.NativeDevice.AdapterLuid}).");
+ builder.AppendLine("Make sure to always allocate buffers on the same device used to actually run the code that accesses them.");
+ }
+
 
  return builder.ToString();
  }