MadOnion has posted a white paper concerning shadow rendering with ST/PowerVR KYRO/KYRO 2 hardware. DirectX 8.0 and 8.0a had an issue where render-to-texture functionality was not exposed on KYRO hardware. By installing DirectX 8.1 or new KYRO drivers, 3DMark2001 starts exploiting the render-to-texture instead of software shadows... We're still dedicated to making 3DMark2001 fully compatible on KYRO cards and are planning to release an update that along with some other issues and new features corrects this problem. The update will be released as soon as possible. However, we are not ready to announce a release date for the update at this point. Read the complete MadOnion white paper.