| XXX - Not complete yet!!! |
| |
| Name |
| |
| SGIX_convolution_accuracy |
| |
| Name Strings |
| |
| GL_SGIX_convolution_accuracy |
| |
| Contact |
| |
| SGI |
| |
| Status |
| |
| XXX - Not complete yet!!! |
| |
| Version |
| |
| $Date: 1999/03/08 21:20:19 $ $Revision: 1.2 $ |
| |
| Number |
| |
| 211 |
| |
| Dependencies |
| |
| EXT_convolution or ARB_imaging is required. |
| |
| Overview |
| |
| This extension adds an accuracy hint for convolution. It |
| allows the program to trade off precision for speed. |
| |
| New Procedures and Functions |
| |
| None |
| |
| New Tokens |
| |
| Accepted by the <target> parameter of glHint and by the <pname> |
| parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev: |
| |
| CONVOLUTION_HINT_SGIX 0x8316 |
| |
| 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 <target> argument of Hint is specified as CONVOLUTION_HINT |
| then the <hint> argument indicates the desired quality of pixel |
| colors computed by the convolution stage of the pixel transfer |
| pipeline. Higher quality may correspond to higher-precision |
| arithmetic, although an implementation may ignore the hint. This |
| hint applies to both 1D and 2D convolution. |
| |
| Additions to Chapter 6 of the 1.1 Specification (State and State Requests) |
| |
| None |
| |
| Additions to the GLX Specification |
| |
| None |
| |
| GLX Protocol |
| |
| None |
| |
| Dependencies on EXT_convolution and ARB_imaging |
| |
| If EXT_convolution or ARB_imaging is implemented, this extension |
| modifies the accuracy of the convolution operation. |
| |
| Errors |
| |
| None |
| |
| New State |
| |
| Get Value Get Command Type Value Attrib |
| --------- ----------- ---- ------- ------ |
| CONVOLUTION_HINT_SGIX GetIntegerv Z3 DONT_CARE hint |
| |
| New Implementation Dependent State |
| |
| None |