# glPointSize

## Name

glPointSize — specify the diameter of rasterized points

## C Specification

 void glPointSize( GLfloat size);

## Parameters

size

Specifies the diameter of rasterized points. The initial value is 1.

## Description

glPointSize specifies the rasterized diameter of points. If point size mode is disabled (see glEnable with parameter GL_PROGRAM_POINT_SIZE), this value will be used to rasterize points. Otherwise, the value written to the shading language built-in variable gl_PointSize will be used.

## Notes

The point size specified by glPointSize is always returned when GL_POINT_SIZE is queried. Clamping and rounding for points have no effect on the specified value.

## Errors

GL_INVALID_VALUE is generated if size is less than or equal to 0.

## Associated Gets

glGet with argument GL_POINT_SIZE_RANGE

glGet with argument GL_POINT_SIZE_GRANULARITY

glGet with argument GL_POINT_SIZE

glGet with argument GL_POINT_FADE_THRESHOLD_SIZE

glIsEnabled with argument GL_PROGRAM_POINT_SIZE

## 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
glPointSize