Convert GrClip to an abstract base class

src/gpu/GrDrawTarget.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDrawTarget.h"
 
 #include "GrAuditTrail.h"
@@ skipping 221 matching lines @@
 
 void GrDrawTarget::reset() {
     fBatches.reset();
 }
 
 void GrDrawTarget::drawBatch(const GrPipelineBuilder& pipelineBuilder,
                              const GrClip& clip,
                              GrDrawBatch* batch) {
     // Setup clip
     GrAppliedClip appliedClip;
-    if (!fClipMaskManager->setupClipping(pipelineBuilder, clip, &batch->bounds(), &appliedClip)) {
+    if (!clip.apply(fClipMaskManager, pipelineBuilder, &batch->bounds(), &appliedClip)) {
         return;
     }
 
     GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps;
     if (appliedClip.clipCoverageFragmentProcessor()) {
         arfps.set(&pipelineBuilder);
         arfps.addCoverageFragmentProcessor(appliedClip.clipCoverageFragmentProcessor());
     }
 
     GrPipeline::CreateArgs args;
@@ skipping 57 matching lines @@
                                const GrClip& clip,
                                const SkMatrix& viewMatrix,
                                const GrPath* path,
                                GrPathRendering::FillType fill) {
     // TODO: extract portions of checkDraw that are relevant to path stenciling.
     SkASSERT(path);
     SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport());
 
     // Setup clip
     GrAppliedClip appliedClip;
-    if (!fClipMaskManager->setupClipping(pipelineBuilder, clip, nullptr, &appliedClip)) {
+    if (!clip.apply(fClipMaskManager, pipelineBuilder, nullptr, &appliedClip)) {
         return;
     }
     // TODO: respect fClipBatchToBounds if we ever start computing bounds here.
 
-    GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps;
-    if (appliedClip.clipCoverageFragmentProcessor()) {
-        arfps.set(&pipelineBuilder);
-        arfps.addCoverageFragmentProcessor(appliedClip.clipCoverageFragmentProcessor());
-    }
+    // Coverage AA does not make sense when rendering to the stencil buffer. The caller should never
+    // attempt this in a situation that would require coverage AA.
+    SkASSERT(!appliedClip.clipCoverageFragmentProcessor());
 
     GrRenderTarget* rt = pipelineBuilder.getRenderTarget();
     GrStencilAttachment* stencilAttachment = fResourceProvider->attachStencilAttachment(rt);
 
     GrBatch* batch = GrStencilPathBatch::Create(viewMatrix,
                                                 pipelineBuilder.isHWAntialias(),
                                                 fill,
                                                 appliedClip.hasStencilClip(),
                                                 stencilAttachment->bits(),
                                                 appliedClip.scissorState(),
@@ skipping 31 matching lines @@
 
         GrPipelineBuilder pipelineBuilder;
         pipelineBuilder.setXPFactory(
             GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode))->unref();
         pipelineBuilder.setRenderTarget(renderTarget);
 
         SkRect scalarRect = SkRect::Make(*rect);
         SkAutoTUnref<GrDrawBatch> batch(
                 GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(), scalarRect,
                                                     nullptr, nullptr));
-        this->drawBatch(pipelineBuilder, GrClip::WideOpen(), batch);
+        this->drawBatch(pipelineBuilder, GrNoClip(), batch);
     } else {
         GrBatch* batch = new GrClearBatch(*rect, color, renderTarget);
         this->recordBatch(batch);
         batch->unref();
     }
 }
 
 void GrDrawTarget::discard(GrRenderTarget* renderTarget) {
     if (this->caps()->discardRenderTargetSupport()) {
         GrBatch* batch = new GrDiscardBatch(renderTarget);
@@ skipping 124 matching lines @@
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrDrawTarget::clearStencilClip(const SkIRect& rect, bool insideClip, GrRenderTarget* rt) {
     GrBatch* batch = new GrClearStencilClipBatch(rect, insideClip, rt);
     this->recordBatch(batch);
     batch->unref();
 }