> Direct3D handles Step 1.0 a lot better than OpenGL. Step 1.0's coordinate format > differs from all other Model 3 revisions. I use a trick to get it to look acceptable, > otherwise there would be serious Z-buffer problems. It seems weird to me that most of > the scenes look solid but the characters tend to develop seams and gaps when moving.
Did you adjust the clip planes for Step 1.0? In my DX9 renderer I have set the near plane to 10.0 and the far plane to 500000.0 for Step 1.0 games. If the difference between the near and far planes is too big, you will get Z-buffer fighting issues.