make glyph_pos imageblur* largeglyphblur portable

gm/imageblur.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 "gm.h"
 #include "SkBlurImageFilter.h"
 #include "SkRandom.h"
@@ skipping 23 matching lines @@
 
     void onDraw(SkCanvas* canvas) override {
         SkPaint paint;
         paint.setImageFilter(SkBlurImageFilter::Create(fSigmaX, fSigmaY))->unref();
         canvas->saveLayer(NULL, &paint);
         const char* str = "The quick brown fox jumped over the lazy dog.";
 
         SkRandom rand;
         SkPaint textPaint;
         textPaint.setAntiAlias(true);
-        sk_tool_utils::set_portable_typeface(&textPaint);
+        sk_tool_utils::set_portable_typeface_always(&textPaint);
         for (int i = 0; i < 25; ++i) {
             int x = rand.nextULessThan(WIDTH);
             int y = rand.nextULessThan(HEIGHT);
-            textPaint.setColor(rand.nextBits(24) | 0xFF000000);
+            textPaint.setColor(sk_tool_utils::color_to_565(rand.nextBits(24) | 0xFF000000));

[reed1, 2015/07/16 21:14:04]

Does this actually result in zero-diffs, given that the paint has antialiasing
on?

[caryclark, 2015/07/17 12:42:30]

No, but it reduces the number of diffs. I've largely given up on zero diffs;
instead, I try to minimize the diffs so any actual bugs stand out.

             textPaint.setTextSize(rand.nextRangeScalar(0, 300));
             canvas->drawText(str, strlen(str), SkIntToScalar(x),
                              SkIntToScalar(y), textPaint);
         }
         canvas->restore();
     }
 
 private:
     SkScalar fSigmaX;
     SkScalar fSigmaY;
     SkString fName;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory1(void*) { return new ImageBlurGM(24.0f, 0.0f, ""); }
 static GMRegistry reg1(MyFactory1);
 
 static GM* MyFactory2(void*) { return new ImageBlurGM(80.0f, 80.0f, "_large"); }
 static GMRegistry reg2(MyFactory2);
 
 }