From 07a7224e2dd17f6aaeeeeda02837567675c7f1c2 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Fri, 13 Jul 2001 21:08:24 +0000
Subject: [PATCH] oops with invert_from()

---
 panda/src/linmath/lmatrix4_src.I | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/panda/src/linmath/lmatrix4_src.I b/panda/src/linmath/lmatrix4_src.I
index aeb3cced7d..3f76fd2cf7 100644
--- a/panda/src/linmath/lmatrix4_src.I
+++ b/panda/src/linmath/lmatrix4_src.I
@@ -1078,7 +1078,10 @@ INLINE_LINMATH bool FLOATNAME(LMatrix4)::
 invert_affine_from(const FLOATNAME(LMatrix4) &other) {
   FLOATNAME(LMatrix3) rot;
 
-  rot.invert_from(other.get_upper_3());  // probably could use transpose here
+  // probably could use transpose here
+  if (!rot.invert_from(other.get_upper_3())) {
+    return false;
+  }
 
   set_upper_3(rot);
 //  set_col(3, FLOATNAME(LVecBase4)(0.0f, 0.0f, 0.0f, 1.0f));