1XXX - Not complete. 2 3Name 4 5 SGIX_dvc 6 7Name Strings 8 9 GL_SGIX_dvc 10 11Version 12 13 $Date: 1997/02/26 22:47:24 $ $Revision: 1.1 $ 14 15Number 16 17 ??? 18 19Dependencies 20 21 SGIX_image_compression is required. 22 23Overview 24 25 This extension creates a new compression type to be used with 26 SGIX_image_compression which allows the decompression from- and 27 compression to client data stored in the formats described by the DVC 28 and DVCPRO digital video compression standards. These formats use the 29 YCrCb color space to represent pixels before compression and after 30 decompression. 31 32Issues 33 34 - How should the color spaces be specified? 35 36 - Are either DVC or DVCPRO copyrighted or trademarked names? 37 38New Procedures and Functions 39 40 None. 41 42New Tokens 43 44 Accepted by the <param> parameter of PixelStoref and PixelStorei 45 when the <pname> parameter is COMPRESSION_TYPE_SGIX: 46 47 DVC_SGIX 48 DVCPRO_SGIX 49 50Additions to Chapter 2 of the 1.0 Specification (OpenGL Operation) 51 52 None. 53 54Additions to Chapter 3 of the 1.0 Specification (Rasterization) 55 56 3.6.1 Pixel Storage Modes 57 58 DVC_SGIX and DVCPRO_SGIX are added to the Valid Range of 59 UNPACK_COMPRESSION_TYPE in Table 3.1. 60 61Additions to Chapter 4 of the 1.0 Specification (Per-Fragment Operations 62and the Frame Buffer) 63 64 4.3.2 Reading Pixels 65 66 DVC_SGIX and DVCPRO_SGIX are added to the Valid Range of 67 PACK_COMPRESSION_TYPE in Table 4.5. 68 69 70Additions to Chapter 5 of the 1.0 Specification (Special Functions) 71 72 None. 73 74Additions to Chapter 6 of the 1.0 Specification (State and State Requests) 75 76 77Additions to the GLX Specification 78 79 80GLX Protocol 81 82 83Errors 84 85 XXX 86 87New State 88 89 None. 90 91New Implementation Dependent State 92 93 None. 94