glQueryMatrixxOES
- return the values of the current matrix
GLbitfield glQueryMatrixxOES(GLfixed * mantissa, GLint * exponent)
mantissa
Returns the mantissi of the current matrix.
exponent
Returns the exponents of the current matrix.
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.
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.
glGetString
with argument GL_EXTENSIONS
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This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.