public void compileShader(){
        glLinkProgram(program);

        if (glGetProgrami(program, GL_LINK_STATUS) == 0){
            System.err.println(glGetProgramInfoLog(program,1024));
            System.exit(1);
        }

        glValidateProgram(program);

        if (glGetProgrami(program, GL_VALIDATE_STATUS) == 0){
            System.err.println(glGetProgramInfoLog(program,1024));
            System.exit(1);
        }

    }