Merge pull request #11342 from WestLangley/dev-gamma

WebGLPrograms: Add renderer.gammaOutput to program code

src/renderers/webgl/WebGLPrograms.js

@@ -239,6 +239,8 @@ function WebGLPrograms( renderer, capabilities ) {
 
 		}
 
+		array.push( renderer.gammaOutput );
+
 		return array.join();
 
 	};