1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Dither_b, 256, 256, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker canvas->clear(0);
7*c8dee2aaSAndroid Build Coastguard Worker SkBitmap bm32;
8*c8dee2aaSAndroid Build Coastguard Worker bm32.allocPixels(SkImageInfo::Make(20, 10, kN32_SkColorType, kPremul_SkAlphaType));
9*c8dee2aaSAndroid Build Coastguard Worker SkCanvas c32(bm32);
10*c8dee2aaSAndroid Build Coastguard Worker SkPoint points[] = {{0, 0}, {20, 0}};
11*c8dee2aaSAndroid Build Coastguard Worker SkColor colors[] = {0xFF334455, 0xFF662211 };
12*c8dee2aaSAndroid Build Coastguard Worker SkPaint paint;
13*c8dee2aaSAndroid Build Coastguard Worker paint.setShader(SkGradientShader::MakeLinear(
14*c8dee2aaSAndroid Build Coastguard Worker points, colors, nullptr, std::size(colors),
15*c8dee2aaSAndroid Build Coastguard Worker SkTileMode::kClamp));
16*c8dee2aaSAndroid Build Coastguard Worker paint.setDither(true);
17*c8dee2aaSAndroid Build Coastguard Worker auto img = bm32.asImage();
18*c8dee2aaSAndroid Build Coastguard Worker c32.drawPaint(paint);
19*c8dee2aaSAndroid Build Coastguard Worker canvas->scale(12, 12);
20*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(img, 0, 0);
21*c8dee2aaSAndroid Build Coastguard Worker paint.setBlendMode(SkBlendMode::kPlus);
22*c8dee2aaSAndroid Build Coastguard Worker SkSamplingOptions sampling;
23*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(img, 0, 11, sampling, &paint);
24*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(img, 0, 11, sampling, &paint);
25*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(img, 0, 11, sampling, &paint);
26*c8dee2aaSAndroid Build Coastguard Worker }
27*c8dee2aaSAndroid Build Coastguard Worker } // END FIDDLE
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