private void initQuadProgram(){
  glUseProgram(quadProgram);
  int texUniform=glGetUniformLocation(quadProgram,"tex");
  glUniform1i(texUniform,0);
  glUseProgram(0);
}

private void initQuadProgram ( ) { glUseProgram ( quadProgram ) ; int texUniform = glGetUniformLocation ( quadProgram , "tex" ) ; glUniform1i ( texUniform , 0 ) ; glUseProgram ( 0 ) ; }
initialize the full - screen - quad program .
