in app/src/main/java/com/facebook/sample/gles/GLHelpers.java [24:32]
public static void checkGlError(String op) {
int error = GLES20.glGetError();
if (error == GLES20.GL_NO_ERROR) {
return;
}
String msg = op + ": glError 0x" + Integer.toHexString(error);
Log.e(TAG, msg);
throw new RuntimeException(msg);
}