how i make a multiple cube throughout qopengl es2.0 cube example

[gangyeolkim]

hi !

because of my project , i'm studying about Qt OpenGL ES 2.0
currently, i 'm trying to make two cubes using cube Example(https://doc.qt.io/qt-5/qtopengl-cube-example.html)

i tried ,

doubling vbo(var name : vertices, indices), and changed like below,
glDrawElements(GL_TRIANGLE_STRIP, 34, GL_UNSIGNED_SHORT, 0); // before
glDrawElements(GL_TRIANGLE_STRIP, 68, GL_UNSIGNED_SHORT, 0); // after

but, i can't get two cube ( of course, i changed other cube's vbo position )

how i approach to this?

if you have a good way or url , please give me please.

thank you for reading!

this is my test enviroment

• ubuntu 16.04
• Qt 5.6.3