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=74ef460f89ed5904334d0f8883e781c4
5REG_FIDDLE(Pixmap_writable_addr, 256, 256, true, 0) {
6void draw(SkCanvas* canvas) {
7    const int w = 4;
8    const int h = 4;
9    SkPMColor storage[w * h * 4];
10    SkPixmap pixmap(SkImageInfo::MakeN32(w, h, kPremul_SkAlphaType), storage, w * 4);
11    SkDebugf("pixmap.writable_addr() %c= (void *)storage\n",
12              pixmap.writable_addr()  == (void *)storage ? '=' : '!');
13    pixmap.erase(0x00000000);
14    *(SkPMColor*)pixmap.writable_addr() = 0xFFFFFFFF;
15    SkDebugf("pixmap.getColor(0, 1) %c= 0x00000000\n",
16              pixmap.getColor(0, 1)  == 0x00000000 ? '=' : '!');
17    SkDebugf("pixmap.getColor(0, 0) %c= 0xFFFFFFFF\n",
18              pixmap.getColor(0, 0)  == 0xFFFFFFFF ? '=' : '!');
19}
20}  // END FIDDLE
21