public static String loadShader(String fileName){
		StringBuilder shaderSource = new StringBuilder();
		BufferedReader shaderReader = null;
		
		try{
			try {
				shaderReader = new BufferedReader(new FileReader("./res/shaders/" + fileName));
			} catch (Exception e) {
				e.printStackTrace();
				System.exit(1);
			}
			String line;
			
			while((line = shaderReader.readLine()) != null){
				
				shaderSource.append(line).append("\n");
			}
			
			shaderReader.close();
		}catch(Exception e){
			e.printStackTrace();
			System.exit(1);
		}
		return shaderSource.toString();
	}