SimpleShader | Cocos2dx simple shader | Reflection library

It looks like your problem is intended to familiarize you with setting up and using a vertex buffer. If so, it doesn't matter how you come up with the triangles -- the point is to understand how the setup works.

So, the first thing you need to do is to read your textbook on this topic. If you don't have a text, you will need to look up the graphics calls in an OpenGL reference.

If you run the program as-is, it should draw a bunch of randomly chosen, disconnected points (in the form of a fractal, but still...). This is because the actual draw call, glDrawArrays(), is called with the enumerated value GL_POINTS, which tells it to draw points, as its first argument.

If you read the documentation for glDrawArrays(), it should list other values for this argument, some of which draw triangles in various ways. The most straightforward of these is GL_TRIANGLES, but I recommend you look up all of them to give you an idea what your options are.

Generating the triangles is up to you. If your name is short, generating them by hand should be fairly easy. Note that you should entirely replace the random-point-generating code; options include:

• with inline data
• with some code to load the coordinates from a file
• with something more clever so you don't have to hand-generate them