1XXX - Not complete yet!!! 2 3Name 4 5 SGIX_convolution_accuracy 6 7Name Strings 8 9 GL_SGIX_convolution_accuracy 10 11Contact 12 13 SGI 14 15Status 16 17 XXX - Not complete yet!!! 18 19Version 20 21 $Date: 1999/03/08 21:20:19 $ $Revision: 1.2 $ 22 23Number 24 25 211 26 27Dependencies 28 29 EXT_convolution or ARB_imaging is required. 30 31Overview 32 33 This extension adds an accuracy hint for convolution. It 34 allows the program to trade off precision for speed. 35 36New Procedures and Functions 37 38 None 39 40New Tokens 41 42 Accepted by the <target> parameter of glHint and by the <pname> 43 parameter of GetBooleanv, GetIntegerv, GetFloatv, and GetDoublev: 44 45 CONVOLUTION_HINT_SGIX 0x8316 46 47Additions to Chapter 2 of the 1.1 Specification (OpenGL Operation) 48 49 None 50 51Additions to Chapter 3 of the 1.1 Specification (Rasterization) 52 53 None 54 55Additions to Chapter 4 of the 1.1 Specification (Fragments and the 56Frame Buffer) 57 58 None 59 60Additions to Chapter 5 of the 1.1 Specification (Special Functions) 61 62 Add to section 5.6 ("Hints"): 63 64 If the <target> argument of Hint is specified as CONVOLUTION_HINT 65 then the <hint> argument indicates the desired quality of pixel 66 colors computed by the convolution stage of the pixel transfer 67 pipeline. Higher quality may correspond to higher-precision 68 arithmetic, although an implementation may ignore the hint. This 69 hint applies to both 1D and 2D convolution. 70 71Additions to Chapter 6 of the 1.1 Specification (State and State Requests) 72 73 None 74 75Additions to the GLX Specification 76 77 None 78 79GLX Protocol 80 81 None 82 83Dependencies on EXT_convolution and ARB_imaging 84 85 If EXT_convolution or ARB_imaging is implemented, this extension 86 modifies the accuracy of the convolution operation. 87 88Errors 89 90 None 91 92New State 93 94 Get Value Get Command Type Value Attrib 95 --------- ----------- ---- ------- ------ 96 CONVOLUTION_HINT_SGIX GetIntegerv Z3 DONT_CARE hint 97 98New Implementation Dependent State 99 100 None 101