1991-2006
Silicon Graphics, Inc.
glPointParameter
3G
glPointParameter
specify point parameters
C Specification
void glPointParameterf
GLenum pname
GLfloat param
void glPointParameteri
GLenum pname
GLint param
Parameters
pname
Specifies a single-valued point parameter.
GL_POINT_FADE_THRESHOLD_SIZE, and
GL_POINT_SPRITE_COORD_ORIGIN
are accepted.
param
Specifies the value that pname will be set to.
C Specification
void glPointParameterfv
GLenum pname
const GLfloat * params
void glPointParameteriv
GLenum pname
const GLint * params
Parameters
pname
Specifies a point parameter.
GL_POINT_FADE_THRESHOLD_SIZE, and
GL_POINT_SPRITE_COORD_ORIGIN
are accepted.
params
Specifies the value to be assigned to pname..
Description
The following values are accepted for pname:
GL_POINT_FADE_THRESHOLD_SIZE
params is a single floating-point value that specifies the threshold value
to which point sizes are clamped if they exceed the specified value. The
default value is 1.0.
GL_POINT_SPRITE_COORD_ORIGIN
params is a single enum specifying the point sprite texture coordinate origin, either GL_LOWER_LEFT or GL_UPPER_LEFT.
The default value is GL_UPPER_LEFT.
Errors
GL_INVALID_VALUE is generated if the value specified for
GL_POINT_FADE_THRESHOLD_SIZE is less than zero.
GL_INVALID_ENUM is generated If the value specified for
GL_POINT_SPRITE_COORD_ORIGIN is not GL_LOWER_LEFT or GL_UPPER_LEFT.
Associated Gets
glGet with argument GL_POINT_FADE_THRESHOLD_SIZE
glGet with argument GL_POINT_SPRITE_COORD_ORIGIN
See Also
glPointSize
Copyright
Copyright 1991-2006
Silicon Graphics, Inc. Copyright 2010
Khronos Group. This document is licensed under the SGI
Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.