Remove hasMixedSamples() from GrPipelineBuilder

src/gpu/GrClipMaskManager.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrClipMaskManager.h"
 #include "GrCaps.h"
 #include "GrDrawingManager.h"
@@ skipping 430 matching lines @@
     //   isect convex_poly
     //   isect convex_poly
     // when drawing rounded div borders. This could probably be tuned based on a
     // configuration's relative costs of switching RTs to generate a mask vs
     // longer shaders.
     if (elements.count() <= kMaxAnalyticElements) {
         SkVector clipToRTOffset = { SkIntToScalar(-clip.origin().fX),
                                     SkIntToScalar(-clip.origin().fY) };
         // When there are multiple samples we want to do per-sample clipping, not compute a
         // fractional pixel coverage.
-        bool disallowAnalyticAA = rt->isUnifiedMultisampled() || pipelineBuilder.hasMixedSamples();
+        bool disallowAnalyticAA = rt->isStencilBufferMultisampled();
+        if (disallowAnalyticAA && !rt->numColorSamples()) {
+            // With a single color sample, any coverage info is lost from color once it hits the
+            // color buffer anyway, so we may as well use coverage AA if nothing else in the pipe
+            // is multisampled.
+            disallowAnalyticAA = pipelineBuilder.isHWAntialias() ||
+                                 !pipelineBuilder.getStencil().isDisabled();
+        }
         const GrFragmentProcessor* clipFP = nullptr;
         if (elements.isEmpty() ||
             (requiresAA &&
              this->getAnalyticClipProcessor(elements, disallowAnalyticAA, clipToRTOffset, devBounds,
                                             &clipFP))) {
             SkIRect scissorSpaceIBounds(clipSpaceIBounds);
             scissorSpaceIBounds.offset(-clip.origin());
             if (nullptr == devBounds ||
                 !SkRect::Make(scissorSpaceIBounds).contains(*devBounds)) {
                 out->fScissorState.set(scissorSpaceIBounds);
@@ skipping 684 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
 void GrClipMaskManager::adjustPathStencilParams(const GrStencilAttachment* stencilAttachment,
                                                 GrStencilSettings* settings) {
     if (stencilAttachment) {
         int stencilBits = stencilAttachment->bits();
         this->adjustStencilParams(settings, fClipMode, stencilBits);
     }
 }