GLPOINTPARAMETER(3G)

NAME
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/.