1 // Copyright 2019 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"
4 // HASH=76d4d4a7931a48495e4d5f54e073be53
5 REG_FIDDLE(Dither_b, 256, 256, false, 0) {
draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) {
7 canvas->clear(0);
8 SkBitmap bm32;
9 bm32.allocPixels(SkImageInfo::Make(20, 10, kN32_SkColorType, kPremul_SkAlphaType));
10 SkCanvas c32(bm32);
11 SkPoint points[] = {{0, 0}, {20, 0}};
12 SkColor colors[] = {0xFF334455, 0xFF662211 };
13 SkPaint paint;
14 paint.setShader(SkGradientShader::MakeLinear(
15 points, colors, nullptr, SK_ARRAY_COUNT(colors),
16 SkTileMode::kClamp));
17 paint.setDither(true);
18 auto img = bm32.asImage();
19 c32.drawPaint(paint);
20 canvas->scale(12, 12);
21 canvas->drawImage(img, 0, 0);
22 paint.setBlendMode(SkBlendMode::kPlus);
23 SkSamplingOptions sampling;
24 canvas->drawImage(img, 0, 11, sampling, &paint);
25 canvas->drawImage(img, 0, 11, sampling, &paint);
26 canvas->drawImage(img, 0, 11, sampling, &paint);
27 }
28 } // END FIDDLE
29