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authorRhys Weatherley <rhys.weatherley@nokia.com>2009-09-04 04:12:08 (GMT)
committerRhys Weatherley <rhys.weatherley@nokia.com>2009-09-04 07:00:23 (GMT)
commit974aec137dfdbb1dd68c41113b22eb25131965b8 (patch)
treeadbf042502fd35d1bce5a2aea811d41633ecd495 /src/gui/embedded
parent4c501d7fce503a610edabfba5d6efc3ef2778bef (diff)
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Modify QMatrix4x4 and QQuaternion to use qreal internally
Some concerns were expressed about the float precision of QMatrix4x4, which this change addresses by using qreal instead. The QVector2D/3D/4D classes still use float internally, so that they can be used directly in large arrays of vertex values to be uploaded to an OpenGL server. QQuaternion is a client-side class, and it should produce rotations that are consistent with QMatrix4x4. So its precision was changed too. A consequence of this change is that the following no longer works in a portable fashion: QMatrix4x4 mat; ... glLoadMatrixf(mat.constData()); The caller must now repack the argument to convert from qreal to GLfloat. Reviewed-by: Michael Goddard Reviewed-by: Andreas
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