xref: /aosp_15_r20/external/skia/docs/examples/Pixmap_writable_addr64.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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(Pixmap_writable_addr64, 256, 40, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     SkImageInfo info = SkImageInfo::Make(3, 3, kRGBA_F16_SkColorType, kPremul_SkAlphaType);
7*c8dee2aaSAndroid Build Coastguard Worker     uint64_t storage[9];
8*c8dee2aaSAndroid Build Coastguard Worker     SkPixmap pixmap(info, storage, 3 * sizeof(uint64_t));
9*c8dee2aaSAndroid Build Coastguard Worker     SkColor4f c4 { 1, 0.45f, 0.25f, 0.65f };
10*c8dee2aaSAndroid Build Coastguard Worker     pixmap.erase(c4);
11*c8dee2aaSAndroid Build Coastguard Worker     SkBitmap bitmap;
12*c8dee2aaSAndroid Build Coastguard Worker     canvas->scale(10, 10);
13*c8dee2aaSAndroid Build Coastguard Worker     bitmap.installPixels(pixmap);
14*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawImage(bitmap.asImage(), 0, 0);
15*c8dee2aaSAndroid Build Coastguard Worker     *pixmap.writable_addr64(1, 1) |= 0x00ff000000000000LL;
16*c8dee2aaSAndroid Build Coastguard Worker     bitmap.installPixels(pixmap);
17*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawImage(bitmap.asImage(), 10, 0);
18*c8dee2aaSAndroid Build Coastguard Worker }
19*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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