My question is if I have a static vertex buffer and index buffer that won''t change for the duration of the application, can I send it to the graphic card once and no over and over each frame (thinking that with large data carry over the slow bus system). Basically each frame I call the render function which in turn call the drawprimitive to send those vertex and index buffer. is this how it is done? and that it will send over and over? thanks.

If you have a static buffer, in POOL_DEFAULT it will be in video card memory. In POOL_MANAGED it will be in AGP memory. Things in POOL_DEFAULT should be created with USAGE_WRITEONLY. Because you should never re-lock or read from a static VB, using POOL_DEFAULT and USAGE_WRITEONLY is all you should worry about.

DX8 class cards don''t store indices on the video card, and transfer them each time you ask to draw... there is no way around this. If you crank up the debug output level you may see "Unable to create driver index buffer" each time you try to make an index buffer.

On DX9 cards, both indices and vertices should go into video memory with the settings above.

Thank you very much.

yeah, I thought this might be the cause of the slow down but apparently it wasn''t, see my other topic posted, what I''m trying to render is about 500 large quads about 5000 x 5000 units in size, with single texture and it render at about 10 fps. 500 quads is just 1000 tris and I don''t know where or what cause this slow down.