XXX - Not complete yet!!! Name SGIX_scalebias_hint Name Strings GL_SGIX_scalebias_hint Contact SGI Status XXX - Not complete yet!!! Version $Date$ Number 236 Dependencies None Overview This extension adds an precision hint for scaling and biasing arithmetic. For large scale factors, hinting GL_NICEST produces the most accurate results. The hint only applies to Octane2 VPro graphics systems, to work around a hardware issue. New Procedures and Functions None New Tokens Accepted by the parameter of glHint and by the parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev: SCALEBIAS_HINT_SGIX 0x8322 Additions to Chapter 2 of the 1.1 Specification (OpenGL Operation) None Additions to Chapter 3 of the 1.1 Specification (Rasterization) None Additions to Chapter 4 of the 1.1 Specification (Fragments and the Frame Buffer) None Additions to Chapter 5 of the 1.1 Specification (Special Functions) Add to section 5.6 ("Hints"): If the argument of Hint is specified as SCALEBIAS_HINT, then the argument indicates the desired precision of geometric transformations around the near clip plane (XXX - is this really what's going on?). The NICEST hint trades off performance for increased clip accuracy. Additions to Chapter 6 of the 1.1 Specification (State and State Requests) None Additions to the GLX Specification None GLX Protocol None Errors None New State Get Value Get Command Type Value Attrib --------- ----------- ---- ------- ------ SCALEBIAS_HINT_SGIX GetIntegerv Z3 DONT_CARE hint New Implementation Dependent State None