THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 30/09/2003 at 01:55, xxxxxxxx wrote:
Cinema 4D Version: 8.200
Platform: Windows ;
Language(s) : C++ ;
for the Cg-based hardware renderer I'm developing I need to know how the bump map computation is done in Cinema 4D. At the moment I'm building the normal vectors using differences between neighboring pixels of the bump map, weighted by the texture size. But this does not look precisely like the original.
In Cinema 4D, there seems to be some smoothing involved, an interpolation across several pixels. In addition, the more I experiment with Cinema 4D's bump mapping, the more I suspect that in some situations there is just some kind of faked relief shading, no full computation of normals and lighting.
Thanks for any insider information.