Hi there, I have just started learning Directx programming and i'm having a problem, I am currently just trying to make a 3d cube, but however i make the cube, the culling is always done wrong on the cube, I can always see the wrong sides of the cube, eg. I can see the last drawn side of the cube insted of seeing only what i am supposed to be able to see. I have also tried a cube mesh with normals specified and having a light on the scene, but depending on which way the light is facing, one of the faces is always missing and hence showing the inside of the cube. I'm not sure if there is something wrong with my mesh, but all the normals on the verts face outwards, and i have tried all of the renderstate culling options. If anyone could help it would be great. Thanks Paul Robinson

Vertex normals only affect the lighting calculations - they have nothing to do with whether or not the face is culled. Backface culling depends on the winding order of the vertices comprising the triangle. Perhaps you've got this wrong?

Simplify things to narrow down the problem. Disable lighting, disable culling, change Draw*Primitive to only draw a single face of your cube. Ensure that single face is drawn correctly before moving on to the next face or before you begin turning on features like lighting, texturing, and culling.

Hey everyone, thanks for the replys, it was the zbuffer/depth buffer problem that i had forgotten to turn on.

Thanks for the helps :)