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=809284db136748208b3efc31cd89de29
5REG_FIDDLE(Pixmap_writable_addr8, 256, 64, false, 0) {
6void draw(SkCanvas* canvas) {
7    uint8_t storage[][5] = {{ 0,   0,  64,   0,  0},
8                            { 0, 128, 255, 128,  0},
9                            {64, 255, 255, 255, 64},
10                            { 0, 128, 255, 128,  0},
11                            { 0,   0,  64,   0,  0}};
12    SkImageInfo imageInfo = SkImageInfo::Make(5, 5, kGray_8_SkColorType, kPremul_SkAlphaType);
13    SkPixmap pixmap(imageInfo, storage[0], 5);
14    SkBitmap bitmap;
15    bitmap.installPixels(pixmap);
16    canvas->scale(10, 10);
17    canvas->drawImage(bitmap.asImage(), 0, 0);
18    *pixmap.writable_addr8(2, 2) = 0;
19//  bitmap.installPixels(pixmap);      // uncomment to fix on GPU
20    canvas->drawImage(bitmap.asImage(), 10, 0);
21}
22}  // END FIDDLE
23