Allow GrReducedClip to take non-integer query bounds

src/utils/SkLua.cpp

Index: src/utils/SkLua.cpp
diff --git a/src/utils/SkLua.cpp b/src/utils/SkLua.cpp
index d2ff5551af1854095c8cc654014bb03131134f18..b0dfd0a36a765d3d74d83c9af6eafc906f4f4655 100644
--- a/src/utils/SkLua.cpp
+++ b/src/utils/SkLua.cpp
@@ -641,19 +641,19 @@ int SkLua::lcanvas_getReducedClipStack(lua_State* L) {
     SkIRect queryBounds = canvas->getTopLayerBounds();
 
     GrReducedClip::ElementList elements;
-    GrReducedClip::InitialState initialState;
     int32_t genID;
     SkIRect resultBounds;
+    bool requiresAA;
 
     const SkClipStack& stack = *canvas->getClipStack();
 
-    GrReducedClip::ReduceClipStack(stack,
-                                   queryBounds,
-                                   &elements,
-                                   &genID,
-                                   &initialState,
-                                   &resultBounds,
-                                   nullptr);
+    GrReducedClip::InitialState initialState SK_UNUSED =
+        GrReducedClip::ReduceClipStack(stack,
+                                       SkRect::Make(queryBounds),
+                                       &elements,
+                                       &genID,
+                                       &resultBounds,
+                                       &requiresAA);
 
     GrReducedClip::ElementList::Iter iter(elements);
     int i = 0;
@@ -664,7 +664,7 @@ int SkLua::lcanvas_getReducedClipStack(lua_State* L) {
         lua_rawseti(L, -2, ++i);
     }
     // Currently this only returns the element list to lua, not the initial state or result bounds.
-    // It could return these as additional items on the lua stack.
+    // It absolutely must return these as additional items on the lua stack in order to be correct.

[bsalomon, 2016/07/19 13:33:12]

This was used to gather information about multi-element clips. It isn't used to
actually implement anything by lua other than dumping the element list. I don't
know that anything is necessarily incorrect here.

[csmartdalton, 2016/07/19 15:59:01]

Done.

     return 1;
 #else
     return 0;