As many readers will be aware, the most recent revision of DX is 9.0b. And the upcoming implementation is likely simply to be called DirectX 9.0c, our greybeard suggests. The next revision of the famous API will be no DirectX 9.1. And, in terms of new features, it won?t be a huge step that we saw with transition from DX 8.0 to 8.1. DX 8.1 introduced new shader models and upgraded them from PS 1.3 to 1.4 -- a huge boost for ATI at that time since they could render some shaders in less passes with PS 1.4 than Nvidia?s 1.1 or 1.3 shader models. Read on at The Inq