1// Copyright 2020 Google LLC.
2// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3#include "tools/fiddle/examples.h"
4REG_FIDDLE(no_gpu_blur, 256, 256, false, 0) {
5void draw(SkCanvas* canvas) {
6    SkBitmap alpha, bitmap;
7    bitmap.allocN32Pixels(100, 100);
8    SkCanvas offscreen(bitmap);
9    offscreen.clear(0);
10    SkPaint paint;
11    paint.setAntiAlias(true);
12    paint.setColor(SK_ColorBLUE);
13    paint.setStyle(SkPaint::kStroke_Style);
14    paint.setStrokeWidth(20);
15    offscreen.drawCircle(50, 50, 39, paint);
16    offscreen.flush();
17    paint.setMaskFilter(SkMaskFilter::MakeBlur(kOuter_SkBlurStyle, 3));
18    SkIPoint offset;
19    bitmap.extractAlpha(&alpha, &paint, nullptr, &offset);
20    paint.setColor(SK_ColorRED);
21    canvas->drawImage(bitmap.asImage(), 0, -offset.fY, SkSamplingOptions(), &paint);
22    canvas->drawImage(alpha.asImage(), 100 + offset.fX, 0, SkSamplingOptions(), &paint);
23}
24}  // END FIDDLE
25