TEMPORARY: track stencil clip state in GrRenderTargetOpList

src/gpu/GrRenderTargetContextPriv.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrRenderTargetContextPriv_DEFINED
 #define GrRenderTargetContextPriv_DEFINED
 
 #include "GrRenderTargetContext.h"
 #include "GrRenderTargetOpList.h"
 #include "GrPathRendering.h"
 
 class GrFixedClip;
 class GrPath;
 struct GrUserStencilSettings;
 
 /** Class that adds methods to GrRenderTargetContext that are only intended for use internal to
     Skia. This class is purely a privileged window into GrRenderTargetContext. It should never have
     additional data members or virtual methods. */
 class GrRenderTargetContextPriv {
 public:
     gr_instanced::InstancedRendering* accessInstancedRendering() const {
         return fRenderTargetContext->getOpList()->instancedRendering();
     }
 
+    // called to note the last clip drawn to the stencil buffer.
+    // TODO: remove after clipping overhaul.
+    void setLastClip(int32_t clipStackGenID,
+                     const SkIRect& clipSpaceRect,
+                     const SkIPoint clipOrigin) {
+        GrRenderTargetOpList* opList = fRenderTargetContext->getOpList();
+        opList->fLastClipStackGenID = clipStackGenID;
+        opList->fLastClipStackRect = clipSpaceRect;
+        opList->fLastClipOrigin = clipOrigin;
+    }
+
+    // called to determine if we have to render the clip into SB.
+    // TODO: remove after clipping overhaul.
+    bool mustRenderClip(int32_t clipStackGenID,
+                        const SkIRect& clipSpaceRect,
+                        const SkIPoint& clipOrigin) const {
+        GrRenderTargetOpList* opList = fRenderTargetContext->getOpList();
+        return opList->fLastClipStackGenID != clipStackGenID ||
+               opList->fLastClipOrigin != clipOrigin ||
+               !opList->fLastClipStackRect.contains(clipSpaceRect);
+    }
+
     void clear(const GrFixedClip&, const GrColor, bool canIgnoreClip);
 
     void clearStencilClip(const GrFixedClip&, bool insideStencilMask);
 
     void stencilRect(const GrClip& clip,
                      const GrUserStencilSettings* ss,
                      bool useHWAA,
                      const SkMatrix& viewMatrix,
                      const SkRect& rect);
 
@@ skipping 42 matching lines @@
 
 inline GrRenderTargetContextPriv GrRenderTargetContext::priv() {
     return GrRenderTargetContextPriv(this);
 }
 
 inline const GrRenderTargetContextPriv GrRenderTargetContext::priv() const {
     return GrRenderTargetContextPriv(const_cast<GrRenderTargetContext*>(this));
 }
 
 #endif