binds this shader program , in preparation for rendering . concode_field_sep GL20 gl concode_elem_sep int vertexShader concode_elem_sep int fragmentShader concode_elem_sep int id concode_field_sep int getUniformLocation concode_elem_sep int getAttribLocation concode_elem_sep int compileShader concode_elem_sep void close
void function ( ) { gl . glUseProgram ( id ) ; }