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glPointParameter

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 ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
glPointParameterfv ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
glPointParameteri ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔
glPointParameteriv ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

See Also

glPointSize

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