Axiom.RenderSystems.OpenGLES.GLESRenderSystem.SetGLLight C# (CSharp) Method

		private void SetGLLight( int index, Light l )
		{
			All glIndex = All.Light0 + index;

			if ( l == null )
			{
				// Disable in the scene
				OpenGL.Disable( glIndex );
			}
			else
			{
				switch ( l.Type )
				{
					case LightType.Spotlight:
						OpenGL.Light( glIndex, All.SpotCutoff, 0.5f * l.SpotlightOuterAngle );
						GLESConfig.GlCheckError( this );
						OpenGL.Light( glIndex, All.SpotExponent, l.SpotlightFalloff );
						GLESConfig.GlCheckError( this );
						break;
					default:
						OpenGL.Light( glIndex, All.SpotCutoff, 180.0f );
						break;
				}

				//// Color
				ColorEx col = l.Diffuse;

				float[] f4Vals = new float[] { col.r, col.g, col.b, col.a };
				OpenGL.Light( glIndex, All.Diffuse, f4Vals );
				GLESConfig.GlCheckError( this );
				col = l.Specular;
				f4Vals[ 0 ] = col.r;
				f4Vals[ 1 ] = col.g;
				f4Vals[ 2 ] = col.b;
				f4Vals[ 3 ] = col.a;
				OpenGL.Light( glIndex, All.Specular, f4Vals );
				GLESConfig.GlCheckError( this );

				// Disable ambient light for movables;
				f4Vals[ 0 ] = 0;
				f4Vals[ 1 ] = 0;
				f4Vals[ 2 ] = 0;
				f4Vals[ 3 ] = 1;
				OpenGL.Light( glIndex, All.Ambient, f4Vals );
				GLESConfig.GlCheckError( this );

				SetGLLightPositionDirection( l, glIndex );
				// Attenuation
				OpenGL.Light( glIndex, All.ConstantAttenuation, l.AttenuationConstant );
				GLESConfig.GlCheckError( this );

				OpenGL.Light( glIndex, All.LinearAttenuation, l.AttenuationLinear );
				GLESConfig.GlCheckError( this );

				OpenGL.Light( glIndex, All.QuadraticAttenuation, l.AttenuationQuadratic );
				GLESConfig.GlCheckError( this );

				// Enable in the scene
				OpenGL.Enable( glIndex );
				GLESConfig.GlCheckError( this );
			}
		}
		/// <summary>