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# docs.GL

OpenGL 3
OpenGL 2

# glVertex

## Name

glVertex — specify a vertex

## C Specification

`void glVertex2s(` | GLshort | x,
| GLshort | y`)`;

`void glVertex2i(` | GLint | x,
| GLint | y`)`;

`void glVertex2f(` | GLfloat | x,
| GLfloat | y`)`;

`void glVertex2d(` | GLdouble | x,
| GLdouble | y`)`;

`void glVertex3s(` | GLshort | x,
| GLshort | y,
| GLshort | z`)`;

`void glVertex3i(` | GLint | x,
| GLint | y,
| GLint | z`)`;

`void glVertex3f(` | GLfloat | x,
| GLfloat | y,
| GLfloat | z`)`;

`void glVertex3d(` | GLdouble | x,
| GLdouble | y,
| GLdouble | z`)`;

`void glVertex4s(` | GLshort | x,
| GLshort | y,
| GLshort | z,
| GLshort | w`)`;

`void glVertex4i(` | GLint | x,
| GLint | y,
| GLint | z,
| GLint | w`)`;

`void glVertex4f(` | GLfloat | x,
| GLfloat | y,
| GLfloat | z,
| GLfloat | w`)`;

`void glVertex4d(` | GLdouble | x,
| GLdouble | y,
| GLdouble | z,
| GLdouble | w`)`;

## Parameters

`x`, `y`, `z`, `w`

  Specify x, y, z, and w coordinates of a vertex. Not all parameters are present in all forms of the command.

## C Specification

`void glVertex2sv(` | const GLshort * | v`)`;

`void glVertex2iv(` | const GLint * | v`)`;

`void glVertex2fv(` | const GLfloat * | v`)`;

`void glVertex2dv(` | const GLdouble * | v`)`;

`void glVertex3sv(` | const GLshort * | v`)`;

`void glVertex3iv(` | const GLint * | v`)`;

`void glVertex3fv(` | const GLfloat * | v`)`;

`void glVertex3dv(` | const GLdouble * | v`)`;

`void glVertex4sv(` | const GLshort * | v`)`;

`void glVertex4iv(` | const GLint * | v`)`;

`void glVertex4fv(` | const GLfloat * | v`)`;

`void glVertex4dv(` | const GLdouble * | v`)`;

## Parameters

`v`

  Specifies a pointer to an array of two, three, or four elements. The elements of a two-element array are x and y; of a three-element array, x, y, and z; and of a four-element array, x, y, z, and w.

## Description

`glVertex` commands are used within glBegin/glEnd pairs to specify point, line, and polygon vertices. The current color, normal, texture coordinates, and fog coordinate are associated with the vertex when `glVertex` is called.

When only x and y are specified, z defaults to 0 and w defaults to 1. When x, y, and z are specified, w defaults to 1.

## Notes

Invoking `glVertex` outside of a glBegin/glEnd pair results in undefined behavior.

## Tutorials

## See Also

glBegin, glCallList, glColor, glEdgeFlag, glEvalCoord, glFogCoord, glIndex, glMaterial, glMultiTexCoord, glNormal, glRect, glTexCoord, glVertexPointer

## Copyright

Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/.

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