fix stencil after some discussion in #1818 in love2d/love

lib/chroot.lua

@@ -12,16 +12,20 @@ if love.getVersion() >= 12 then
   end
 else
   local ffi = require 'ffi'
+  local liblove = ffi.os == 'Windows'
+    and ffi.load 'love'
+    or ffi.C -- thanks to slime73, Love2D developer :)
+
   ffi.cdef [[
   int PHYSFS_mount(const char *, const char *, int);
   int PHYSFS_unmount(const char *);]]
 
   -- FIXME: Bug may appear in Linux. Recompile Love2D or use official PPA.
   function ll._mntdir(dir)
-    return ffi.C.PHYSFS_mount(dir, '/', 0) ~= 0
+    return liblove.PHYSFS_mount(dir, '/', 0) ~= 0
   end
   function ll._umntdir(dir)
-    ffi.C.PHYSFS_unmount(dir)
+    liblove.PHYSFS_unmount(dir)
   end
 end
 

ll-min.lua

@@ -14,13 +14,16 @@ function llHome()
 end
 
 if love.getVersion() >= 12 then
-  local stfn
-  function love.graphics.stencil(fn) stfn = fn end
+  function love.graphics.stencil(fn)
+    love.graphics.setColorMask(false)
+    love.graphics.setStencilMode('replace', 'always', 1)
+    fn()
+    love.graphics.setColorMask(true)
+  end
   function love.graphics.setStencilTest(cmp, val)
-    if not cmp
-    then love.graphics.setStencilMode()
-    else love.graphics.setStencilMode('replace', cmp, val, 1, 1)
-	    stfn()
+    if cmp
+    then love.graphics.setStencilMode('keep', cmp, val)
+    else love.graphics.setStencilMode()
     end
   end
 end