Axiom.SceneManagers.Bsp.BspSceneManager.InitTextureLighting C# (CSharp) Method

		protected void InitTextureLighting()
		{
			if ( targetRenderSystem.Capabilities.TextureUnitCount < 2 )
				LogManager.Instance.Write( "--WARNING--At least 2 available texture units are required for BSP dynamic lighting!" );

			Texture texLight = TextureLight.CreateTexture();

			textureLightMaterial = (Material)MaterialManager.Instance.GetByName( "Axiom/BspTextureLightMaterial" );
			if ( textureLightMaterial == null )
			{
				textureLightMaterial = (Material)MaterialManager.Instance.Create( "Axiom/BspTextureLightMaterial", ResourceGroupManager.DefaultResourceGroupName );
				textureLightPass = textureLightMaterial.GetTechnique( 0 ).GetPass( 0 );
				// the texture light
				TextureUnitState tex = textureLightPass.CreateTextureUnitState( texLight.Name );
				tex.SetColorOperation( LayerBlendOperation.Modulate );
				tex.ColorBlendMode.source2 = LayerBlendSource.Diffuse;
				tex.SetAlphaOperation( LayerBlendOperationEx.Modulate );
				tex.AlphaBlendMode.source2 = LayerBlendSource.Diffuse;
				tex.TextureCoordSet = 2;
                tex.SetTextureAddressingMode( TextureAddressing.Clamp );

				// The geometry texture without lightmap. Use the light texture on this
				// pass, the appropriate texture will be rendered at RenderTextureLighting
				tex = textureLightPass.CreateTextureUnitState( texLight.Name );
				tex.SetColorOperation( LayerBlendOperation.Modulate );
				tex.SetAlphaOperation( LayerBlendOperationEx.Modulate );
                tex.SetTextureAddressingMode( TextureAddressing.Wrap );

				textureLightPass.SetSceneBlending( SceneBlendType.TransparentAlpha );

				textureLightMaterial.CullingMode = CullingMode.None;
				textureLightMaterial.Lighting = false;
			}
			else
			{
				textureLightPass = textureLightMaterial.GetTechnique( 0 ).GetPass( 0 );
			}
		}