main: _mesa_cube_level_complete checks NumLayers.

_mesa_cube_level_complete now verifies that a cube map texture object actually
has six texture images before proceeding.

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index e018ab9103c2c18149b7b40bc8dc42b5a57d44ca..a99b108d35f1995dbb316db0367cb45e67c9931c 100644 (file)
--- a/src/mesa/main/texobj.c
+++ b/src/mesa/main/texobj.c
@@ -879,6 +879,10 @@ _mesa_cube_level_complete(const struct gl_texture_object *texObj,
    if (texObj->Target != GL_TEXTURE_CUBE_MAP)
       return GL_FALSE;
 
+   /* Make sure we have enough image planes for a cube map. */
+   if (texObj->NumLayers < 6)
+      return GL_FALSE;
+
    if ((level < 0) || (level >= MAX_TEXTURE_LEVELS))
       return GL_FALSE;