glHint — specify implementation-specific hints
Specifies a symbolic constant indicating the behavior to be controlled.
Specifies a symbolic constant indicating the desired behavior.
GL_DONT_CARE are accepted.
Certain aspects of GL behavior,
when there is room for interpretation,
can be controlled with hints.
A hint is specified with two arguments.
target is a symbolic
constant indicating the behavior to be controlled,
mode is another symbolic constant indicating the desired
behavior. The initial value for each
mode can be one of the following:
The most efficient option should be chosen.
The most correct, or highest quality, option should be chosen.
Though the implementation aspects that can be hinted are well defined,
the interpretation of the hints depends on the implementation.
The hint aspects that can be specified with
along with suggested semantics,
are as follows:
Indicates the accuracy of the derivative calculation for the GL shading language fragment processing built-in functions:
Indicates the sampling quality of antialiased lines.
If a larger filter function is applied, hinting
result in more pixel fragments being generated during rasterization.
Indicates the sampling quality of antialiased polygons.
GL_NICEST can result in more pixel fragments being generated
if a larger filter function is applied.
Indicates the quality and performance of the compressing texture images.
GL_FASTEST indicates that texture images should be compressed
as quickly as possible, while
GL_NICEST indicates that texture images
should be compressed with as little image quality loss as possible.
GL_NICEST should be selected if the texture is to be retrieved by
glGetCompressedTexImage for reuse.
The interpretation of hints depends on the implementation.
Some implementations ignore
GL_INVALID_ENUM is generated if either
mode is not
an accepted value.
|Function / Feature Name||2.0||2.1||3.0||3.1||3.2||3.3||4.0||4.1||4.2||4.3||4.4||4.5|
Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/.