It is recommended, although not required, that hardware implement a gamma correction approximation to account for the non-linear gamma of typical display surfaces. The approximation can assume a gamma value of 2 or 2.2, and the approximation need not match that employed by GDI in its software emulation. It also need not employ a table lookup correction. There must still be the option to disable gamma correction, for future support of rendering text to surfaces that are defined as having a 1.0 linear gamma. Unfortunately, these are most common cases for text.
Applications can enable antialiased text at any time.
Displaced Subpixel Rendering Information Windows 2000 supports the querying of the physical pixel characteristics of the display device for possible displaced subpixel rendering. The display driver may supply this information itself, or it may override any information returned to GDI by other means. See the Windows 2000 DDK for technical information about implementing graphics drivers. All rights reserved. Terms of Use.