Don't call SkGpuDevice::drawVertices from drawPoints when AA is required.

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"
@@ skipping 587 matching lines @@
 void SkGpuDevice::drawPoints(const SkDraw& draw, SkCanvas::PointMode mode,
                              size_t count, const SkPoint pts[], const SkPaint& paint) {
     CHECK_FOR_NODRAW_ANNOTATION(paint);
     CHECK_SHOULD_DRAW(draw, false);
 
     SkScalar width = paint.getStrokeWidth();
     if (width < 0) {
         return;
     }
 
-    // we only handle hairlines and paints without path effects or mask filters,
+    // we only handle non-AA hairlines and paints without path effects or mask filters,
     // else we let the SkDraw call our drawPath()
-    if (width > 0 || paint.getPathEffect() || paint.getMaskFilter()) {
+    bool requiresAA = paint.isAntiAlias() && !fRenderTarget->isMultisampled();
+    if (requiresAA || width > 0 || paint.getPathEffect() || paint.getMaskFilter()) {
         draw.drawPoints(mode, count, pts, paint, true);
         return;
     }
 
     GrPaint grPaint;
     if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
         return;
     }
 
     fContext->drawVertices(grPaint,
@@ skipping 1213 matching lines @@
                          GrTexture* texture,
                          bool needClear)
     : SkDevice(make_bitmap(context, texture->asRenderTarget())) {
 
     GrAssert(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;
 }