With regards to 3D support, this is a DirectX8.1 chip with support for Pixel Shaders up to version 1.3. Although SiS have included Pixel Shader capabilities in the chip, they have not decided to use hardware Vertex Shaders, instead relying on the software Vertex Shader path. Interestingly, although they didn't include Vertex Shaders, they do have a hardware Transformation and Lighting Engine - a slightly odd mix you may think, but one that probably suits the current mix of gaming titles quite well.