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