glPointParameter.3G man page

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

See Also

glPointSize()

Info

02/04/2016 [FIXME: source] [FIXME: manual]