2003-2004 Silicon Graphics, Inc.
glLoadMatrix 3G
glLoadMatrix glLoadMatrixf glLoadMatrixx replace the current matrix with the specified matrix

## C Specification

void `glLoadMatrixf` const GLfloat * m void `glLoadMatrixx` const GLfixed * m

## Parameters

m

  Specifies a pointer to 16 consecutive values, which are used as the elements of a 4 x 4 column-major matrix.

## Description

`glLoadMatrix` replaces the current matrix with the one whose elements are specified by m. The current matrix is the projection matrix, modelview matrix, or texture matrix, depending on the current matrix mode (see glMatrixMode).

The current matrix, M, defines a transformation of coordinates. For instance, assume M refers to the modelview matrix. If v= v[0] v[1] v[2] v[3] is the set of object coordinates of a vertex, and m points to an array of 16 fixed-point or single-precision floating-point values m[0], m[1], ... m[15] , then the modelview transformation M v does the following:

M v= ( m[0] m[4] m[8] m[12] m[1] m[5] m[9] m[13] m[2] m[6] m[10] m[14] m[3] m[7] m[11] m[15] ) x ( v[0] v[1] v[2] v[3] )

Where ``x'' denotes matrix multiplication.

Projection and texture transformations are similarly defined.

## Notes

While the elements of the matrix may be specified with fixed point or single precision, the GL implementation may store or operate on these values in less than single precision.

## Associated Gets

glGet with argument `GL_MATRIX_MODE`

glGet with argument `GL_MODELVIEW_MATRIX`

glGet with argument `GL_PROJECTION_MATRIX`

glGet with argument `GL_TEXTURE_MATRIX`

## See Also

glLoadIdentity, glMatrixMode, glMultMatrix, glPushMatrix

## Copyright

Copyright 2003-2004 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.