Add GrAASmallPathRenderer.

src/gpu/GrSWMaskHelper.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 "GrSWMaskHelper.h"
 
 #include "GrDrawState.h"
 #include "GrDrawTargetCaps.h"
 #include "GrGpu.h"
 
 #include "SkData.h"
+#include "SkDistanceFieldGen.h"
 #include "SkStrokeRec.h"
 
 // TODO: try to remove this #include
 #include "GrContext.h"
 
 namespace {
 
 /*
  * Convert a boolean operation into a transfer mode code
  */
@@ skipping 274 matching lines @@
             this->compressTextureData(texture, desc);
             break;
 
         case kBlitter_CompressionMode:
             SkASSERT(fCompressedBuffer.get());
             this->sendTextureData(texture, desc, fCompressedBuffer.get(), 0);
             break;
     }
 }
 
+/**
+ * Convert mask generation results to a signed distance field
+ */
+void GrSWMaskHelper::toSDF(unsigned char* sdf) {
+    SkAutoLockPixels alp(fBM);
+    
+    SkGenerateDistanceFieldFromA8Image(sdf, (const unsigned char*)fBM.getPixels(),
+                                       fBM.width(), fBM.height(), fBM.rowBytes());
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 /**
  * Software rasterizes path to A8 mask (possibly using the context's matrix)
  * and uploads the result to a scratch texture. Returns the resulting
  * texture on success; NULL on failure.
  */
 GrTexture* GrSWMaskHelper::DrawPathMaskToTexture(GrContext* context,
                                                  const SkPath& path,
                                                  const SkStrokeRec& stroke,
                                                  const SkIRect& resultBounds,
@@ skipping 43 matching lines @@
     maskMatrix.preConcat(drawState->getViewMatrix());
 
     drawState->addCoverageProcessor(
                          GrSimpleTextureEffect::Create(texture,
                                                        maskMatrix,
                                                        GrTextureParams::kNone_FilterMode,
                                                        kPosition_GrCoordSet))->unref();
 
     target->drawSimpleRect(dstRect);
 }