33 lines
1.4 KiB
C++
33 lines
1.4 KiB
C++
// Copyright 2020 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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REG_FIDDLE(gpu8888diff, 256, 256, false, 0) {
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void draw(SkCanvas* canvas) {
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canvas->scale(16, 16);
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SkBitmap bitmap;
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SkImageInfo imageInfo =
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SkImageInfo::Make(2, 2, kRGBA_8888_SkColorType, kPremul_SkAlphaType);
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bitmap.allocPixels(imageInfo);
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SkCanvas offscreen(bitmap);
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offscreen.clear(SK_ColorGREEN);
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canvas->drawImage(bitmap.asImage(), 0, 0);
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offscreen.clear(SK_ColorGRAY);
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canvas->drawImage(bitmap.asImage(), 2, 2);
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auto pack8888 = [](unsigned a, unsigned r, unsigned g, unsigned b) -> uint32_t {
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return (a << 24) | (b << 16) | (g << 8) | (r << 0);
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};
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uint32_t red8888[] = {pack8888(0xFF, 0xFF, 0x0, 0x0), pack8888(0xFF, 0xbb, 0x0, 0x0),
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pack8888(0xFF, 0x99, 0x0, 0x0), pack8888(0xFF, 0x55, 0x0, 0x0)};
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uint32_t blue8888[] = {pack8888(0xFF, 0x0, 0x0, 0x0FF), pack8888(0xFF, 0x0, 0x0, 0x0bb),
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pack8888(0xFF, 0x0, 0x0, 0x099), pack8888(0xFF, 0x0, 0x0, 0x055)};
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SkPixmap redPixmap(imageInfo, &red8888, 8);
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if (bitmap.writePixels(redPixmap, 0, 0)) {
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canvas->drawImage(bitmap.asImage(), 4, 4);
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}
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SkPixmap bluePixmap(imageInfo, &blue8888, 8);
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if (bitmap.writePixels(bluePixmap, 0, 0)) {
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canvas->drawImage(bitmap.asImage(), 6, 6);
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}
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}
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} // END FIDDLE
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