I am rendering a grid of lines using the Fixed function pipeline and then I want to render something else using my vertex shader. I can render the grid fine, but when I try to render the model (with the shader) it doesn''t show anything except for the grid. When I comment out the drawing code for the grid the model renders fine. Any ideas? -Greg

- Debug runtime installed?
- No warnings/errors in the debug spew?
- Tried it with the REF device?

Make sure you''re setting the vertex shader and all, and passing your correct matrices, ...etc

Cheers,
Muhammad Haggag