Add GrContextOptions flag to disable distance field path renderer.

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"
 
 #include "GrCaps.h"
 #include "gl/GrGLCaps.h"
 #include "glsl/GrGLSLCaps.h"
 #include "GrContext.h"
 #include "GrGpu.h"
 
 #include "batches/GrAAConvexPathRenderer.h"
 #include "batches/GrAADistanceFieldPathRenderer.h"
 #include "batches/GrAAHairLinePathRenderer.h"
 #include "batches/GrAALinearizingConvexPathRenderer.h"
 #include "batches/GrDashLinePathRenderer.h"
 #include "batches/GrDefaultPathRenderer.h"
 #include "batches/GrMSAAPathRenderer.h"
 #include "batches/GrPLSPathRenderer.h"
 #include "batches/GrStencilAndCoverPathRenderer.h"
 #include "batches/GrTessellatingPathRenderer.h"
 
-GrPathRendererChain::GrPathRendererChain(GrContext* context) {
+GrPathRendererChain::GrPathRendererChain(GrContext* context, const Options& options) {
     const GrCaps& caps = *context->caps();
     this->addPathRenderer(new GrDashLinePathRenderer)->unref();
 
     if (GrPathRenderer* pr = GrStencilAndCoverPathRenderer::Create(context->resourceProvider(),
                                                                    caps)) {
         this->addPathRenderer(pr)->unref();
     }
 #ifndef SK_BUILD_FOR_ANDROID_FRAMEWORK
     if (caps.sampleShadingSupport()) {
         this->addPathRenderer(new GrMSAAPathRenderer)->unref();
     }
 #endif
     this->addPathRenderer(new GrAAHairLinePathRenderer)->unref();
     this->addPathRenderer(new GrAAConvexPathRenderer)->unref();
     this->addPathRenderer(new GrAALinearizingConvexPathRenderer)->unref();
     if (caps.shaderCaps()->plsPathRenderingSupport()) {
         this->addPathRenderer(new GrPLSPathRenderer)->unref();
     }
-    this->addPathRenderer(new GrAADistanceFieldPathRenderer)->unref();
+    if (!options.fDisableDistanceFieldRenderer) {
+        this->addPathRenderer(new GrAADistanceFieldPathRenderer)->unref();
+    }
     this->addPathRenderer(new GrTessellatingPathRenderer)->unref();
     this->addPathRenderer(new GrDefaultPathRenderer(caps.twoSidedStencilSupport(),
                                                     caps.stencilWrapOpsSupport()))->unref();
 }
 
 GrPathRendererChain::~GrPathRendererChain() {
     for (int i = 0; i < fChain.count(); ++i) {
         fChain[i]->unref();
     }
 }
@@ skipping 36 matching lines @@
                     continue;
                 } else if (stencilSupport) {
                     *stencilSupport = support;
                 }
             }
             return fChain[i];
         }
     }
     return nullptr;
 }