NAME

glPointParameter - specify point parameters

C SPECIFICATION

void glPointParameterf(GLenum pname, GLfloat param);

void glPointParameteri(GLenum pname, GLint param);

void glPointParameterfv(GLenum pname, const GLfloat * params);

void glPointParameteriv(GLenum pname, const GLint * params);

PARAMETERS

pname

Specifies a single-valued point parameter. GL_POINT_FADE_THRESHOLD_SIZE, and GL_POINT_SPRITE_COORD_ORIGIN are accepted.

param

For glPointParameterf and glPointParameteri, specifies the value that pname will be set to.

params

For glPointParameterfv and glPointParameteriv, specifies a pointer to an array where the value or values to be assigned to pname are stored.

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

VERSION SUPPORT

OpenGL Version

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

glPointParameterf

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glPointParameterfv

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glPointParameteri

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glPointParameteriv

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COPYRIGHT

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://khronos.org/registry/OpenGL-Refpages/LICENSES/LicenseRef-FreeB.txt.