1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2020 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_SRGB(gpu4444diff, 260, 260, false, 3, 0, false) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker canvas->scale(16, 16);
7*c8dee2aaSAndroid Build Coastguard Worker SkBitmap bitmap;
8*c8dee2aaSAndroid Build Coastguard Worker SkImageInfo imageInfo = SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, kPremul_SkAlphaType);
9*c8dee2aaSAndroid Build Coastguard Worker bitmap.allocPixels(imageInfo);
10*c8dee2aaSAndroid Build Coastguard Worker SkCanvas offscreen(bitmap);
11*c8dee2aaSAndroid Build Coastguard Worker offscreen.clear(SK_ColorGREEN);
12*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(bitmap.asImage(), 0, 0);
13*c8dee2aaSAndroid Build Coastguard Worker offscreen.clear(SK_ColorGRAY);
14*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(bitmap.asImage(), 2, 2);
15*c8dee2aaSAndroid Build Coastguard Worker auto pack4444 = [](unsigned a, unsigned r, unsigned g, unsigned b) -> uint16_t {
16*c8dee2aaSAndroid Build Coastguard Worker return (a << 0) | (b << 4) | (g << 8) | (r << 12);
17*c8dee2aaSAndroid Build Coastguard Worker };
18*c8dee2aaSAndroid Build Coastguard Worker uint16_t red4444[] = { pack4444(0xF, 0xF, 0x0, 0x0), pack4444(0xF, 0xb, 0x0, 0x0),
19*c8dee2aaSAndroid Build Coastguard Worker pack4444(0xF, 0x9, 0x0, 0x0), pack4444(0xF, 0x5, 0x0, 0x0) };
20*c8dee2aaSAndroid Build Coastguard Worker uint16_t blue4444[] = { pack4444(0xF, 0x0, 0x0, 0x0F), pack4444(0xF, 0x0, 0x0, 0x0b),
21*c8dee2aaSAndroid Build Coastguard Worker pack4444(0xF, 0x0, 0x0, 0x09), pack4444(0xF, 0x0, 0x0, 0x05) };
22*c8dee2aaSAndroid Build Coastguard Worker SkImageInfo pixInfo = SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, kPremul_SkAlphaType);
23*c8dee2aaSAndroid Build Coastguard Worker SkPixmap redPixmap(imageInfo, &red4444, 4);
24*c8dee2aaSAndroid Build Coastguard Worker if (bitmap.writePixels(redPixmap, 0, 0)) {
25*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(bitmap.asImage(), 4, 4);
26*c8dee2aaSAndroid Build Coastguard Worker }
27*c8dee2aaSAndroid Build Coastguard Worker SkPixmap bluePixmap(imageInfo, &blue4444, 4);
28*c8dee2aaSAndroid Build Coastguard Worker if (bitmap.writePixels(bluePixmap, 0, 0)) {
29*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(bitmap.asImage(), 6, 6);
30*c8dee2aaSAndroid Build Coastguard Worker }
31*c8dee2aaSAndroid Build Coastguard Worker }
32*c8dee2aaSAndroid Build Coastguard Worker } // END FIDDLE
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