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XXX - Not complete.
Name
SGIX_dvc
Name Strings
GL_SGIX_dvc
Version
$Date: 1997/02/26 22:47:24 $ $Revision: 1.1 $
Number
???
Dependencies
SGIX_image_compression is required.
Overview
This extension creates a new compression type to be used with
SGIX_image_compression which allows the decompression from- and
compression to client data stored in the formats described by the DVC
and DVCPRO digital video compression standards. These formats use the
YCrCb color space to represent pixels before compression and after
decompression.
Issues
- How should the color spaces be specified?
- Are either DVC or DVCPRO copyrighted or trademarked names?
New Procedures and Functions
None.
New Tokens
Accepted by the <param> parameter of PixelStoref and PixelStorei
when the <pname> parameter is COMPRESSION_TYPE_SGIX:
DVC_SGIX
DVCPRO_SGIX
Additions to Chapter 2 of the 1.0 Specification (OpenGL Operation)
None.
Additions to Chapter 3 of the 1.0 Specification (Rasterization)
3.6.1 Pixel Storage Modes
DVC_SGIX and DVCPRO_SGIX are added to the Valid Range of
UNPACK_COMPRESSION_TYPE in Table 3.1.
Additions to Chapter 4 of the 1.0 Specification (Per-Fragment Operations
and the Frame Buffer)
4.3.2 Reading Pixels
DVC_SGIX and DVCPRO_SGIX are added to the Valid Range of
PACK_COMPRESSION_TYPE in Table 4.5.
Additions to Chapter 5 of the 1.0 Specification (Special Functions)
None.
Additions to Chapter 6 of the 1.0 Specification (State and State Requests)
Additions to the GLX Specification
GLX Protocol
Errors
XXX
New State
None.
New Implementation Dependent State
None.