Make GrPathRenderer only support fills for path stenciling

src/gpu/GrPathRendererChain.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrPathRendererChain.h"
 
@@ skipping 42 matching lines @@
         fChain[i]->unref();
     }
 }
 
 GrPathRenderer* GrPathRendererChain::addPathRenderer(GrPathRenderer* pr) {
     fChain.push_back() = pr;
     pr->ref();
     return pr;
 }
 
-GrPathRenderer* GrPathRendererChain::getPathRenderer(const GrPathRenderer::CanDrawPathArgs& args,
-                                                     DrawType drawType,
-                                                     GrPathRenderer::StencilSupport* stencilSupport) {
+GrPathRenderer* GrPathRendererChain::getPathRenderer(
+        const GrPathRenderer::CanDrawPathArgs& args,
+        DrawType drawType,
+        GrPathRenderer::StencilSupport* stencilSupport) {
     GR_STATIC_ASSERT(GrPathRenderer::kNoSupport_StencilSupport <
                      GrPathRenderer::kStencilOnly_StencilSupport);
     GR_STATIC_ASSERT(GrPathRenderer::kStencilOnly_StencilSupport <
                      GrPathRenderer::kNoRestriction_StencilSupport);
     GrPathRenderer::StencilSupport minStencilSupport;
     if (kStencilOnly_DrawType == drawType) {
         minStencilSupport = GrPathRenderer::kStencilOnly_StencilSupport;
     } else if (kStencilAndColor_DrawType == drawType ||
                kStencilAndColorAntiAlias_DrawType == drawType) {
         minStencilSupport = GrPathRenderer::kNoRestriction_StencilSupport;
     } else {
         minStencilSupport = GrPathRenderer::kNoSupport_StencilSupport;
     }
+    if (minStencilSupport != GrPathRenderer::kNoSupport_StencilSupport) {
+        // We don't support (and shouldn't need) stenciling of non-fill paths.
+        if (!args.fStroke->isFillStyle() || args.fStroke->isDashed()) {
+            return nullptr;
+        }
+    }
 
     for (int i = 0; i < fChain.count(); ++i) {
         if (fChain[i]->canDrawPath(args)) {
             if (GrPathRenderer::kNoSupport_StencilSupport != minStencilSupport) {
                 GrPathRenderer::StencilSupport support =
-                                        fChain[i]->getStencilSupport(*args.fPath, *args.fStroke);
+                                        fChain[i]->getStencilSupport(*args.fPath);
                 if (support < minStencilSupport) {
                     continue;
                 } else if (stencilSupport) {
                     *stencilSupport = support;
                 }
             }
             return fChain[i];
         }
     }
     return nullptr;
 }