# SetRayTracingMatrixParam

> Adds a command to set a matrix parameter on a RayTracingShader.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.Rendering](/engine/6000.0/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

## SetRayTracingMatrixParam(RayTracingShader, string, Matrix4x4)

Adds a command to set a matrix parameter on a [RayTracingShader](/engine/6000.0/script-reference/unityengine/rendering/raytracingshader.md).

```csharp
public void SetRayTracingMatrixParam(RayTracingShader rayTracingShader, string name, Matrix4x4 val)
```

### Parameters

**** (\[RayTracingShader]\(/engine/6000.0/script-reference/unityengine/rendering/raytracingshader)): [RayTracingShader](/engine/6000.0/script-reference/unityengine/rendering/raytracingshader.md) to set parameter for.**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): Name of the variable in shader code.**** (\[Matrix4x4]\(/engine/6000.0/script-reference/unityengine/matrix4x4)): Value to set.

### Remarks

Only shaders defined in the .raytrace file can access the matrix you designate as the argument for this method. To make this matrix accessible to all ray tracing shader types (closest hit, any hit, or miss, for example), call the [CommandBuffer.SetGlobalMatrix](/engine/6000.0/script-reference/unityengine/rendering/commandbuffer/setglobalmatrix.md) method instead.

## SetRayTracingMatrixParam(RayTracingShader, int, Matrix4x4)

Adds a command to set a matrix parameter on a [RayTracingShader](/engine/6000.0/script-reference/unityengine/rendering/raytracingshader.md).

```csharp
public void SetRayTracingMatrixParam(RayTracingShader rayTracingShader, int nameID, Matrix4x4 val)
```

### Parameters

**** (\[RayTracingShader]\(/engine/6000.0/script-reference/unityengine/rendering/raytracingshader)): [RayTracingShader](/engine/6000.0/script-reference/unityengine/rendering/raytracingshader.md) to set parameter for.**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): Property name ID. Use [Shader.PropertyToID](/engine/6000.0/script-reference/unityengine/shader/propertytoid.md) to get this ID.**** (\[Matrix4x4]\(/engine/6000.0/script-reference/unityengine/matrix4x4)): Value to set.

### Remarks

Only shaders defined in the .raytrace file can access the matrix you designate as the argument for this method. To make this matrix accessible to all ray tracing shader types (closest hit, any hit, or miss, for example), call the [CommandBuffer.SetGlobalMatrix](/engine/6000.0/script-reference/unityengine/rendering/commandbuffer/setglobalmatrix.md) method instead.