bcfc554fde
Note: The polarity of the staging flag is inverted from usual because a G3 dependency with no SkUserConfig.h relies on the legacy API. Once this lands, we will migrate them and others, then remove the staging API. The inverted staging flag is kind of nice, actually - I may use that pattern in the future. It means less total CLs and it's just as easy to flip the bit on or off during debugging. Bug: skia:104662 Change-Id: I48cba1eeae3e2e6f79918c6d243e0666e68ec71b Reviewed-on: https://skia-review.googlesource.com/c/skia/+/310656 Reviewed-by: Brian Salomon <bsalomon@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com> Commit-Queue: Adlai Holler <adlai@google.com>
27 lines
1.1 KiB
C++
27 lines
1.1 KiB
C++
// Copyright 2019 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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// HASH=b77a73c4baa63a4a8e2a4fdd96144d0b
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REG_FIDDLE(Image_readPixels_2, 256, 256, false, 3) {
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void draw(SkCanvas* canvas) {
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std::vector<int32_t> srcPixels;
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int rowBytes = image->width() * 4;
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int quarterWidth = image->width() / 4;
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int quarterHeight = image->height() / 4;
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srcPixels.resize(image->height() * rowBytes);
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for (int y = 0; y < 4; ++y) {
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for (int x = 0; x < 4; ++x) {
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SkPixmap pixmap(SkImageInfo::MakeN32Premul(quarterWidth, quarterHeight),
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&srcPixels.front() + x * image->height() * quarterWidth +
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y * quarterWidth, rowBytes);
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image->readPixels(nullptr, pixmap, x * quarterWidth, y * quarterHeight);
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}
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}
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canvas->scale(.5f, .5f);
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SkBitmap bitmap;
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bitmap.installPixels(SkImageInfo::MakeN32Premul(image->width(), image->height()),
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&srcPixels.front(), rowBytes);
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canvas->drawBitmap(bitmap, 0, 0);
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}
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} // END FIDDLE
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