| rayTracingShader | RayTracingShader to set parameter for. |
| name | Name of the variable in shader code. |
| nameID | Property name ID. Use Shader.PropertyToID to get this ID. |
| val | 設定値 |
Adds a command to set a float parameter on a RayTracingShader.
Only shaders defined in the .raytrace file can access the float value you designate as the argument for this method. To make this float value accessible to all ray tracing shader types (closest hit, any hit, or miss, for example), call the CommandBuffer.SetGlobalFloat method instead.