Axiom.Core.SceneManager.InitShadowDebugPass C# (CSharp) Method

		private void InitShadowDebugPass()
		{
			Material matDebug = (Material)MaterialManager.Instance[ SHADOW_VOLUMES_MATERIAL ];

			if ( matDebug == null )
			{
				// Create
				matDebug =
					(Material)
					MaterialManager.Instance.Create( SHADOW_VOLUMES_MATERIAL,
													 ResourceGroupManager.InternalResourceGroupName );
				this.shadowDebugPass = matDebug.GetTechnique( 0 ).GetPass( 0 );
				this.shadowDebugPass.SetSceneBlending( SceneBlendType.Add );
				this.shadowDebugPass.LightingEnabled = false;
				this.shadowDebugPass.DepthWrite = false;
				TextureUnitState t = this.shadowDebugPass.CreateTextureUnitState();
				t.SetColorOperationEx(
					LayerBlendOperationEx.Modulate,
					LayerBlendSource.Manual,
					LayerBlendSource.Current,
					new ColorEx( 0.7f, 0.0f, 0.2f ) );

				this.shadowDebugPass.CullingMode = CullingMode.None;

				if ( this.targetRenderSystem.Capabilities.HasCapability( Capabilities.VertexPrograms ) )
				{
					ShadowVolumeExtrudeProgram.Initialize();

					// Enable the (infinite) point light extruder for now, just to get some params
					this.shadowDebugPass.SetVertexProgram(
						ShadowVolumeExtrudeProgram.GetProgramName( ShadowVolumeExtrudeProgram.Programs.PointLight ) );

					this.infiniteExtrusionParams = this.shadowDebugPass.VertexProgramParameters;
					this.infiniteExtrusionParams.SetAutoConstant( 0, GpuProgramParameters.AutoConstantType.WorldViewProjMatrix );
					this.infiniteExtrusionParams.SetAutoConstant( 4, GpuProgramParameters.AutoConstantType.LightPositionObjectSpace );
					// Note ignored extra parameter - for compatibility with finite extrusion vertex program
					this.infiniteExtrusionParams.SetAutoConstant( 5, GpuProgramParameters.AutoConstantType.ShadowExtrusionDistance );
				}

				matDebug.Compile();
			}
			else
			{
				this.shadowDebugPass = matDebug.GetTechnique( 0 ).GetPass( 0 );
				if ( this.targetRenderSystem.Capabilities.HasCapability( Capabilities.VertexPrograms ) )
				{
					this.infiniteExtrusionParams = this.shadowDebugPass.VertexProgramParameters;
				}
			}
		}