forcemerge 440137 449490
thank you
Christian Holm Christensen wrote:
> In the call
>
> if (!__gluInvertMatrixd(finalMatrix,finalMatrix)) return(GL_FALSE);
>
> in gluUnProject, there's mistake. Inspecting the implementation
> of __gluInverMatrixd(const double* src, double* inv) the arrays src and
> inv cannot overlap. There should be another intermediate 4x4 matrix
> defined, like
>
> GLint GLAPIENTRY
> gluUnProject(GLdouble winx, GLdouble winy, GLdouble winz,
> const GLdouble modelMatrix[16],
> const GLdouble projMatrix[16],
> const GLint viewport[4],
> GLdouble *objx,
> GLdouble *objy,
> GLdouble *objz)
> {
> double finalMatrix[16];
> double temp[16]; /* New temporary store. */
> double in[4];
> double out[4];
>
> __gluMultMatricesd(modelMatrix, projMatrix, temp);
>
> if (!__gluInvertMatrixd(temp,finalMatrix)) return(GL_FALSE);
>
>
> The rest of the function is as before.
>
> If this is not done, then gluUnProject will return very small (and
> incorrect) vectors in (*objx,*objy,*objz)
>
> [Please also refer to discussion on
> https://savannah.cern.ch/bugs/index.php?30943]
>
That's very likely to be already fixed upstream in
http://gitweb.freedesktop.org/?p=mesa/mesa.git;a=commitdiff;h=40438b34405ce88d0e160bc8c3dea24276d63189;hp=e0b80660c8a4cbd9624a9fbe07841541105f712c
Merging with #440137
Mesa 7.0.2 is supposed to be released soon.
Brice
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