From 17aafeba15d2fd7d8b7d7f1dd16efaba3f2f3679 Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Tue, 13 Jan 2015 03:18:05 +0100
Subject: [PATCH] Fix stencil clear: reset stencil mask before glClearStencil

---
 panda/src/glstuff/glGraphicsStateGuardian_src.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/panda/src/glstuff/glGraphicsStateGuardian_src.cxx b/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
index b056cd15e8..4784fec6d7 100644
--- a/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
+++ b/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
@@ -2412,6 +2412,7 @@ clear(DrawableRegion *clearable) {
   }
 
   if (clearable->get_clear_stencil_active()) {
+    glStencilMask(~0);
     glClearStencil(clearable->get_clear_stencil());
     mask |= GL_STENCIL_BUFFER_BIT;
   }