From 652828ec0efd1a7d7a8b497e0324a7bd9f66fd17 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Mon, 16 Nov 2009 08:25:17 -0700
Subject: [PATCH] mesa: check BaseLevel, MaxLevel in _mesa_GenerateMipmapEXT()

---
 src/mesa/main/fbobject.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index a2264b0dbfe..7b3599f9322 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -1962,6 +1962,11 @@ _mesa_GenerateMipmapEXT(GLenum target)
 
    texObj = _mesa_get_current_tex_object(ctx, target);
 
+   if (texObj->BaseLevel >= texObj->MaxLevel) {
+      /* nothing to do */
+      return;
+   }
+
    _mesa_lock_texture(ctx, texObj);
    if (target == GL_TEXTURE_CUBE_MAP) {
       GLuint face;
-- 
2.30.2