| '''OpenGL extension OES.query_matrix |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.OES.query_matrix to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| Many applications may need to query the contents and status of the |
| current matrix at least for debugging purposes, especially as the |
| implementations are allowed to implement matrix machinery either in |
| any (possibly proprietary) floating point format, or in a fixed point |
| format that has the range and accuracy of at least 16.16 (signed 16 bit |
| integer part, unsigned 16 bit fractional part). |
| |
| This extension is intended to allow application to query the components |
| of the matrix and also their status, regardless whether the internal |
| representation is in fixed point or floating point. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/OES/query_matrix.txt |
| ''' |
| from OpenGL import platform, constant, arrays |
| from OpenGL import extensions, wrapper |
| import ctypes |
| from OpenGL.raw.GL import _types, _glgets |
| from OpenGL.raw.GL.OES.query_matrix import * |
| from OpenGL.raw.GL.OES.query_matrix import _EXTENSION_NAME |
|
|
| def glInitQueryMatrixOES(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
| glQueryMatrixxOES=wrapper.wrapper(glQueryMatrixxOES).setOutput( |
| 'exponent',size=(16,),orPassIn=True |
| ).setOutput( |
| 'mantissa',size=(16,),orPassIn=True |
| ) |
| |
