GLAPI/glPointParameter

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glPointParameter
Core in version 4.6
Core since version 1.4

glPointParameter: specify point parameters

Function Definition

 void glPointParameterf(GLenum pname, GLfloat param);
 void glPointParameteri(GLenum pname, GLint param);
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.

Function Definition

 void glPointParameterfv(GLenum pname, const GLfloat * params);
 void glPointParameteriv(GLenum pname, const GLint * params);
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/.