DirectX11: Drawing multiple objects

Question

How can I draw many different objects on screen at once, with multiple vertex buffers, using DrawIndexed()? (Drawing the same object is simple, and I'm not looking to instance)

...but I am looking to transform two different vertex buffers. (Yes I am using indexed vertices)

Answer 1

You can bind multiple vertex buffers at once. However, unless you use instancing or similar (passing transform data in a constant buffer, for example, which becomes cumbersome beyond a certain number of objects and which is effectively the same as instancing anyway), all the buffers bound at a given draw call share the same bound transformation.

In other words, your options are:

• use instancing (which you have discarded for some unspecified reason)
• use constant buffers to emulate instancing (which may also be off the table for the above)
• make multiple draw calls, one for each buffer into which you were able to pack all the objects that can share a transform
• pre-transform all your objects on the CPU, write their final world-space vertices into the buffer, and draw that (somewhat silly)

Answer 2

Creating an OBJECT class did the trick. It allowed for object data separation and the member support I was looking for.