Revert "Do not apply hairline optimization for paths if nv_path_rendering is used"

src/gpu/SkGpuDevice.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 "SkGpuDevice.h"
 
 #include "effects/GrTextureDomainEffect.h"
 #include "effects/GrSimpleTextureEffect.h"
 
 #include "GrContext.h"
 #include "GrBitmapTextContext.h"
-#include "GrGpu.h"
-#include "GrDrawTargetCaps.h"
+
 #include "SkGrTexturePixelRef.h"
 
 #include "SkColorFilter.h"
 #include "SkDeviceImageFilterProxy.h"
 #include "SkDrawProcs.h"
 #include "SkGlyphCache.h"
 #include "SkImageFilter.h"
 #include "SkPathEffect.h"
 #include "SkRRect.h"
 #include "SkStroke.h"
@@ skipping 817 matching lines @@
                            const SkPaint& paint, const SkMatrix* prePathMatrix,
                            bool pathIsMutable) {
     CHECK_FOR_ANNOTATION(paint);
     CHECK_SHOULD_DRAW(draw, false);
 
     GrPaint grPaint;
     if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
         return;
     }
 
+    // can we cheat, and treat a thin stroke as a hairline w/ coverage
+    // if we can, we draw lots faster (raster device does this same test)
+    SkScalar hairlineCoverage;
+    bool doHairLine = SkDrawTreatAsHairline(paint, fContext->getMatrix(), &hairlineCoverage);
+    if (doHairLine) {
+        grPaint.setCoverage(SkScalarRoundToInt(hairlineCoverage * grPaint.getCoverage()));
+    }
+
     // If we have a prematrix, apply it to the path, optimizing for the case
     // where the original path can in fact be modified in place (even though
     // its parameter type is const).
     SkPath* pathPtr = const_cast<SkPath*>(&origSrcPath);
     SkPath  tmpPath, effectPath;
 
     if (prePathMatrix) {
         SkPath* result = pathPtr;
 
         if (!pathIsMutable) {
             result = &tmpPath;
             pathIsMutable = true;
         }
         // should I push prePathMatrix on our MV stack temporarily, instead
         // of applying it here? See SkDraw.cpp
         pathPtr->transform(*prePathMatrix, result);
         pathPtr = result;
     }
     // at this point we're done with prePathMatrix
     SkDEBUGCODE(prePathMatrix = (const SkMatrix*)0x50FF8001;)
 
     SkStrokeRec stroke(paint);
     SkPathEffect* pathEffect = paint.getPathEffect();
     const SkRect* cullRect = NULL;  // TODO: what is our bounds?
     if (pathEffect && pathEffect->filterPath(&effectPath, *pathPtr, &stroke,
                                              cullRect)) {
         pathPtr = &effectPath;
     }
 
+    if (!pathEffect && doHairLine) {
+        stroke.setHairlineStyle();
+    }
+
     if (paint.getMaskFilter()) {
         if (!stroke.isHairlineStyle()) {
             if (stroke.applyToPath(&tmpPath, *pathPtr)) {
                 pathPtr = &tmpPath;
                 pathIsMutable = true;
                 stroke.setFillStyle();
             }
         }
 
         // avoid possibly allocating a new path in transform if we can
@@ skipping 929 matching lines @@
                          GrTexture* texture,
                          bool needClear)
     : SkBitmapDevice(make_bitmap(context, texture->asRenderTarget())) {
 
     SkASSERT(texture && texture->asRenderTarget());
     // This constructor is called from onCreateCompatibleDevice. It has locked the RT in the texture
     // cache. We pass true for the third argument so that it will get unlocked.
     this->initFromRenderTarget(context, texture->asRenderTarget(), true);
     fNeedClear = needClear;
 }