Vertex buffer question

Whoops... it turns out that creating a vertex buffer still doesn't solve the problem- the matrix effects both. So how do I make the matrix's transformations apply to only one? I don't need another D3D Device, do I? Thanks.

Edited by - Oddball on August 9, 2001 8:56:48 PM

Hey there,

Your problem is relatively easy to fix.

You can either:

- Set the matrix.
- Render the first primitive.
- Load the Identity Matrix.
- Render the Second Primitive.

* Or *

- Render the Second Primitive.
- Set the Matrix.
- Render the First Primitive.

A matrix doesn''t effect just the object you are rendering. It effects the whole world. After moving your first object according to the matrix, you have to reset the matrix to its default position; or set a new position, before rendering your next polygon.

I hope that wasn''t too confusing. Just ask if you need more help.

Derek Sauer
dereksauer@hotmail.com

SetTransform(...);
DrawPrimitive(...);
SetTransform(...);
DrawPrimitive(...);

If you''re drawing 2 of the same object, then you can just render it twice. If there are 2 different objects you can either use multiple vertex buffers, or a single vertex buffer and multiple index buffers.