glMultTransposeMatrix man page on Oracle
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GLMULTTRANSPOSEMATRI(3G) OpenGL Manual GLMULTTRANSPOSEMATRI(3G)
NAME
glMultTransposeMatrix - multiply the current matrix with the specified
row-major ordered matrix
C SPECIFICATION
void glMultTransposeMatrixd(const GLdouble * m);
void glMultTransposeMatrixf(const GLfloat * m);
PARAMETERS
m
Points to 16 consecutive values that are used as the elements of a
4 × 4 row-major matrix.
DESCRIPTION
glMultTransposeMatrix multiplies the current matrix with the one
specified using m, and replaces the current matrix with the product.
The current matrix is determined by the current matrix mode (see
glMatrixMode()). It is either the projection matrix, modelview matrix,
or the texture matrix.
EXAMPLES
If the current matrix is C and the coordinates to be transformed are v
= v 0 v 1 v 2 v 3, then the current transformation is C × v, or
c 0 c 4 c 8 c 12 c 1 c 5 c 9 c 13 c 2 c 6 c 10 c
14 c 3 c 7 c 11 c 15 × v 0 v 1 v 2 v 3
Calling glMultTransposeMatrix with an argument of m 16 = m 0 m 1
... m 15 replaces the current transformation with C × M × v, or
c 0 c 4 c 8 c 12 c 1 c 5 c 9 c 13 c 2 c 6 c 10 c
14 c 3 c 7 c 11 c 15 × m 0 m 1 m 2 m 3 m 4 m 5 m
6 m 7 m 8 m 9 m 10 m 11 m 12 m 13 m 14 m 15 × v 0
v 1 v 2 v 3
Where v is represented as a 4 × 1 matrix.
Calling glMultTransposeMatrix with matrix M is identical in operation
to glMultMatrix() with M T, where T represents the transpose.
NOTES
glMultTransposeMatrix is available only if the GL version is 1.3 or
greater.
While the elements of the matrix may be specified with single or double
precision, the GL may store or operate on these values in
less-than-single precision.
The order of the multiplication is important. For example, if the
current transformation is a rotation, and glMultTransposeMatrix is
called with a translation matrix, the translation is done directly on
the coordinates to be transformed, while the rotation is done on the
results of that translation.
ERRORS
GL_INVALID_OPERATION is generated if glMultTransposeMatrix is executed
between the execution of glBegin() and the corresponding execution of
glEnd().
ASSOCIATED GETS
glGet() with argument GL_MATRIX_MODE
glGet() with argument GL_COLOR_MATRIX
glGet() with argument GL_MODELVIEW_MATRIX
glGet() with argument GL_PROJECTION_MATRIX
glGet() with argument GL_TEXTURE_MATRIX
SEE ALSO
glLoadIdentity(), glLoadMatrix(), glLoadTransposeMatrix(),
glMatrixMode(), glPushMatrix()
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
AUTHORS
opengl.org
opengl.org 04/29/2014 GLMULTTRANSPOSEMATRI(3G)
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