Name

glQueryMatrixxOES - return the values of the current matrix

C Specification

GLbitfield glQueryMatrixxOES(GLfixed * mantissa,
    GLint * exponent)

Parameters

mantissa

Returns the mantissi of the current matrix.

exponent

Returns the exponents of the current matrix.

Description

glQueryMatrixxOES returns the values of the current matrix. mantissa returns the 16 mantissa values of the current matrix, and exponent returns the correspnding 16 exponent values. The matrix value i is then close to mantissa [i] * 2exponent [i] .

Use glMatrixMode and glActiveTexture, to select the desired matrix to return.

If all are valid (not NaN or Inf), glQueryMatrixxOES returns the status value 0. Otherwise, for every component i which is not valid, the ith bit is set.

Notes

glQueryMatrixxOES is available only if the GL_OES_query_matrix extension is supported by your implementation.

The implementation is not required to keep track of overflows. If overflows are not tracked, the returned status value is always 0.

Associated Gets

glGetString with argument GL_EXTENSIONS

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/.

See Also

glActiveTexture, glGetString, glMatrixMode