In my app I have a view that renders STL files. STL files are essentially a list of triangle vertices with normals, they have no indices. Every tutorial that I have found explains how to use multiple VBOs but with Indices and when I try using drawArrays rather than drawElements it doesn't work. I'm new to OpenGL and would really appreciate it if someone could provide code examples for using multiple VBOs for setup and drawing them without indices or just references to understandable documentation from which I could learn how to do it. Thanks for any help.