Analytic rrect clip for cicular corners, radius >= .5

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 "GrAAConvexPathRenderer.h"
 #include "GrAAHairLinePathRenderer.h"
 #include "GrAARectRenderer.h"
 #include "GrDrawTargetCaps.h"
 #include "GrGpu.h"
 #include "GrPaint.h"
 #include "GrPathRenderer.h"
 #include "GrRenderTarget.h"
 #include "GrStencilBuffer.h"
 #include "GrSWMaskHelper.h"
 #include "effects/GrTextureDomain.h"
 #include "effects/GrConvexPolyEffect.h"
+#include "effects/GrRRectEffect.h"
 #include "SkRasterClip.h"
 #include "SkStrokeRec.h"
 #include "SkTLazy.h"
 
 #define GR_AA_CLIP 1
 
 typedef SkClipStack::Element Element;
 
 using namespace GrReducedClip;
 
@@ skipping 150 matching lines @@
                     effect.reset(GrConvexPolyEffect::Create(GrConvexPolyEffect::kFillNoAA_EdgeType,
                                                             path, &offset));
                 }
             } else {
                 SkVector offset = { SkIntToScalar(-clipDataIn->fOrigin.fX),
                                     SkIntToScalar(-clipDataIn->fOrigin.fY) };
                 GrConvexPolyEffect::EdgeType type = isAA ? GrConvexPolyEffect::kFillAA_EdgeType :
                                                            GrConvexPolyEffect::kFillNoAA_EdgeType;
                 effect.reset(GrConvexPolyEffect::Create(type, path, &offset));
             }
+        } else if (isAA && SkClipStack::Element::kRRect_Type == type && !rt->isMultisampled()) {
+            const SkRRect& rrect = elements.tail()->getRRect();
+            effect.reset(GrRRectEffect::Create(rrect));
         } else if (isAA && SkClipStack::Element::kRect_Type == type && !rt->isMultisampled()) {
             // We only handle AA/non-MSAA rects here. Coverage effect AA isn't MSAA friendly and
             // non-AA rect clips are handled by the scissor.
             SkRect rect = elements.tail()->getRect();
             SkVector offset = { SkIntToScalar(-clipDataIn->fOrigin.fX),
                                 SkIntToScalar(-clipDataIn->fOrigin.fY) };
             rect.offset(offset);
             effect.reset(GrConvexPolyEffect::CreateForAAFillRect(rect));
             // This should never fail.
             SkASSERT(effect);
@@ skipping 871 matching lines @@
 
     // TODO: dynamically attach a stencil buffer
     int stencilBits = 0;
     GrStencilBuffer* stencilBuffer =
         drawState.getRenderTarget()->getStencilBuffer();
     if (NULL != stencilBuffer) {
         stencilBits = stencilBuffer->bits();
         this->adjustStencilParams(settings, clipMode, stencilBits);
     }
 }