Make stencil and cover path rendering have more reasonable bounds.

src/gpu/GrStencilAndCoverTextContext.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrStencilAndCoverTextContext.h"
 #include "GrAtlasTextContext.h"
 #include "GrDrawContext.h"
@@ skipping 498 matching lines @@
         }
 
         SkMatrix drawMatrix(viewMatrix);
         drawMatrix.preTranslate(x, y);
         drawMatrix.preScale(fTextRatio, fTextRatio);
 
         SkMatrix& localMatrix = fLocalMatrixTemplate;
         localMatrix.setTranslateX(x);
         localMatrix.setTranslateY(y);
 
+        // Don't compute a bounding box. For dst copy texture, we'll opt instead for it to just copy
+        // the entire dst. Realistically this is a moot point, because any context that supports
+        // NV_path_rendering will also support NV_blend_equation_advanced.
+        // For clipping we'll just skip any optimizations based on the bounds. This does, however,
+        // hurt batching.
+        SkRect bounds = SkRect::MakeIWH(pipelineBuilder->getRenderTarget()->width(),
+                                        pipelineBuilder->getRenderTarget()->height());
+
         dc->drawPathsFromRange(pipelineBuilder, drawMatrix, localMatrix, color, glyphs, fDraw,
-                               GrPathRendering::kWinding_FillType);
+                               GrPathRendering::kWinding_FillType, bounds);
     }
 
     if (fFallbackTextBlob) {
         SkPaint fallbackSkPaint(originalSkPaint);
         fStroke.applyToPaint(&fallbackSkPaint);
         if (!fStroke.isFillStyle()) {
             fallbackSkPaint.setStrokeWidth(fStroke.getWidth() * fTextRatio);
         }
 
         fallbackTextContext->drawTextBlob(dc, pipelineBuilder->getRenderTarget(),
@@ skipping 70 matching lines @@
     fBuffIdx = 0;
 }
 
 const SkTextBlob* GrStencilAndCoverTextContext::FallbackBlobBuilder::buildIfInitialized() {
     if (!this->isInitialized()) {
         return nullptr;
     }
     this->flush();
     return fBuilder->build();
 }