From: Brian Paul <brianp@vmware.com>
Date: Fri, 3 Apr 2009 18:49:03 +0000 (-0600)
Subject: mesa: only clear matrix MAT_DIRTY_INVERSE flag when we actually compute the inverse
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ce461ffc5aa2ea6941d6722e8ed473cda8c17833;p=mesa.git

mesa: only clear matrix MAT_DIRTY_INVERSE flag when we actually compute the inverse

If _math_matrix_analyse() got called before we allocated the inverse
matrix array we could lose the flag indicating that we needed to compute
the inverse.  This could happen with certain vertex shader cases.
---

diff --git a/src/mesa/math/m_matrix.c b/src/mesa/math/m_matrix.c
index 58cae88b08b..da6956efed5 100644
--- a/src/mesa/math/m_matrix.c
+++ b/src/mesa/math/m_matrix.c
@@ -1379,11 +1379,10 @@ _math_matrix_analyse( GLmatrix *mat )
 
    if (mat->inv && (mat->flags & MAT_DIRTY_INVERSE)) {
       matrix_invert( mat );
+      mat->flags &= ~MAT_DIRTY_INVERSE;
    }
 
-   mat->flags &= ~(MAT_DIRTY_FLAGS|
-		   MAT_DIRTY_TYPE|
-		   MAT_DIRTY_INVERSE);
+   mat->flags &= ~(MAT_DIRTY_FLAGS | MAT_DIRTY_TYPE);
 }
 
 /*@}*/