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Use temporary matrix in __gluInvertMatrixd() to fix aliasing problem (see bugs 12269...
author
Brian
<brian.paul@tungstengraphics.com>
Mon, 3 Sep 2007 22:20:05 +0000
(16:20 -0600)
committer
Brian
<brian.paul@tungstengraphics.com>
Mon, 3 Sep 2007 22:22:14 +0000
(16:22 -0600)
src/glu/sgi/libutil/project.c
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diff --git
a/src/glu/sgi/libutil/project.c
b/src/glu/sgi/libutil/project.c
index
d22989c
..
356b46b
100644
(file)
--- a/
src/glu/sgi/libutil/project.c
+++ b/
src/glu/sgi/libutil/project.c
@@
-171,9
+171,9
@@
static void __gluMultMatrixVecd(const GLdouble matrix[16], const GLdouble in[4],
** Invert 4x4 matrix.
** Contributed by David Moore (See Mesa bug #6748)
*/
-static int __gluInvertMatrixd(const GLdouble m[16], GLdouble inv[16])
+static int __gluInvertMatrixd(const GLdouble m[16], GLdouble inv
Out
[16])
{
- double det;
+ double
inv[16],
det;
int i;
inv[0] = m[5]*m[10]*m[15] - m[5]*m[11]*m[14] - m[9]*m[6]*m[15]
@@
-216,7
+216,7
@@
static int __gluInvertMatrixd(const GLdouble m[16], GLdouble inv[16])
det = 1.0 / det;
for (i = 0; i < 16; i++)
- inv
[i] *=
det;
+ inv
Out[i] = inv[i] *
det;
return GL_TRUE;
}