if i want to animate an arm. can i do that without using vertexshader?. and instead using matrix?. like this: create a vertice-struct including the following . upper arm . lower arm . hand copy this struct into the same vertexbuffer -------------------------------- RenderLoop: 1. declare transformmatrix for upper arm 2. draw only upper arm vertice with drawprimitive. 3. declare transformmatrix for lower arm 4. add or multiply the upper arm transformmatrix with lower arm transformmatrix. 5. draw only lower arm vertice with drawprimitive 6. declare transformmatrix for hand 7. add or multiply the lower arm transformmatrix with hand transformmatrix. 8. draw only hand vertice with drawprimitive. not sure if i was going to add or multiply the matrices, maybe u could tell me. but, however is this a correct way to do animations?. could it be done like this? [edited by - funkodysse on December 5, 2002 12:09:48 PM] [edited by - funkodysse on December 5, 2002 12:11:59 PM]

Good.
i knew it!.

Look up IDirect3DDevice8::MultiplyTransform in the DirectX SDK Help. It gives an example almost exactly what you described.