Hum, you may find this interesting. Follow along and let me know what you think.....
I started on
THIS page. It is a comparison of all SIS chipsets. Underneither your S650 chipset, it says that is uses SiS Real256 Graphics and the GPU core is SiS315 Core. .....
I then looked up the SIS315 core and found
THIS. It doesn't say anything about T&L here. Hum, the search continues. I then did a Google search (I guess I should have started with this) and found
THIS. The first three paragraphs say it all:
"Taipei Taiwan, December 11, 2000- Silicon Integrated Systems Corp. (SiS), a leading core logic and graphics supplier, today announced its new product SiS315 - the first 256-bit 2D/3D high-performance graphic engine supporting Transform and Lighting (T&L) for the mainstream desktop PC. By integrating a H/W T&L into their VGA, the SiS315 sets a new standard for the mainstream desktop PC market.
"With the recent advances in VGA technology, SiS are very excited about launching the first VGA chip that integrates a H/W T&L engine for mainstream desktop PC market", said Shing Wong, senior VP of SiS. "SiS believes in bringing high-end features such as T&L and 256-bit 3D engine into the mainstream desktop PC market and allowing users to enjoy such high features at lower cost"
Up to now T&L engines only existed in 3D workstations and high-end desktop PC. The T&L engine which is located in front of rendering engine, is capable of doing complex per-vertex multiple transformation and light calculations, creating more accurate and brighter images for the viewer. Traditionally, for a PC platform without T&L engine, all these jobs have to be processed by the CPU before sending the result to the rendering engine. Therefore, the SiS315 3D chip can considerably off-load the CPU loading when running 3D Applications and allow more computing power to focus on fancy effects on the next generation 3D games or interactive applications."
I guess it DOES have T&L, but I'm sure it is pretty limited.