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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

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