add in asserts when rv3d->viewmatob, rv3d->persmatob are not initialized.

This is often hard to spot since in many cases it works correctly even
when not initialized but may still fail in other situations.

1 files changed, 15 insertions, 0 deletions

diff --git a/source/blender/editors/space_view3d/space_view3d.c b/source/blender/editors/space_view3d/space_view3d.c
index 45274cbd619..363eea480b9 100644
--- a/source/blender/editors/space_view3d/space_view3d.c
+++ b/source/blender/editors/space_view3d/space_view3d.c
@@ -243,6 +243,21 @@ void ED_view3d_init_mats_rv3d_gl(struct Object *ob, struct RegionView3D *rv3d)
 	glMultMatrixf(ob->obmat);
 }
 
+#ifdef DEBUG
+/* ensure we correctly initialize */
+void ED_view3d_clear_mats_rv3d(struct RegionView3D *rv3d)
+{
+	zero_m4(rv3d->viewmatob);
+	zero_m4(rv3d->persmatob);
+}
+
+void ED_view3d_check_mats_rv3d(struct RegionView3D *rv3d)
+{
+	BLI_ASSERT_ZERO_M4(rv3d->viewmatob);
+	BLI_ASSERT_ZERO_M4(rv3d->persmatob);
+}
+#endif
+
 /* ******************** default callbacks for view3d space ***************** */
 
 static SpaceLink *view3d_new(const bContext *C)