TEMPORARY: track stencil clip state in GrRenderTargetOpList

src/gpu/GrClipStackClip.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrClipStackClip.h"
 
 #include "GrAppliedClip.h"
@@ skipping 340 matching lines @@
             // clipSpace bounds. We determine the mask's position WRT to the render target here.
             SkIRect rtSpaceMaskBounds = reducedClip.ibounds();
             rtSpaceMaskBounds.offset(-fOrigin);
             out->addCoverageFP(create_fp_for_mask(result.get(), rtSpaceMaskBounds));
             return true;
         }
         // if alpha clip mask creation fails fall through to the non-AA code paths
     }
 
     // use the stencil clip if we can't represent the clip as a rectangle.
-    // TODO: these need to be swapped over to using a StencilAttachmentProxy
-    GrStencilAttachment* stencilAttachment =
-        context->resourceProvider()->attachStencilAttachment(rt);
-    if (nullptr == stencilAttachment) {
+    if (!context->resourceProvider()->attachStencilAttachment(rt)) {
         SkDebugf("WARNING: failed to attach stencil buffer for clip mask. Clip will be ignored.\n");
         return true;
     }
 
     // This relies on the property that a reduced sub-rect of the last clip will contain all the
     // relevant window rectangles that were in the last clip. This subtle requirement will go away
     // after clipping is overhauled.
-    if (stencilAttachment->mustRenderClip(reducedClip.elementsGenID(), reducedClip.ibounds(),
-                                          fOrigin)) {
+    if (renderTargetContext->priv().mustRenderClip(reducedClip.elementsGenID(),
+                                                   reducedClip.ibounds(), fOrigin)) {
         reducedClip.drawStencilClipMask(context, renderTargetContext, fOrigin);
-        stencilAttachment->setLastClip(reducedClip.elementsGenID(), reducedClip.ibounds(),
-                                       fOrigin);
+        renderTargetContext->priv().setLastClip(reducedClip.elementsGenID(), reducedClip.ibounds(),
+                                                fOrigin);
     }
     out->addStencilClip();
     return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Create a 8-bit clip mask in alpha
 
 static void GetClipMaskKey(int32_t clipGenID, const SkIRect& bounds, GrUniqueKey* key) {
     static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain();
@@ skipping 101 matching lines @@
     sk_sp<GrTexture> result(texProvider->createApproxTexture(desc));
     if (!result) {
         return nullptr;
     }
     result->resourcePriv().setUniqueKey(key);
 
     helper.toTexture(result.get());
 
     return result;
 }