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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "SkBitmap.h"
#include "SkImage.h"
// https://bug.skia.org/5096
// Test that when we make an image from a subset of a bitmap, that it
// has a diff (ID, dimensions) from an image made from the entire
// bitmap or a different subset of the image.
DEF_TEST(ImageBitmapIdentity, r) {
SkBitmap bm, a, b;
bm.allocN32Pixels(32, 64);
bm.eraseColor(SK_ColorBLACK);
bm.setImmutable();
(void)bm.extractSubset(&a, SkIRect::MakeXYWH(0, 0, 32, 32));
(void)bm.extractSubset(&b, SkIRect::MakeXYWH(0, 32, 32, 32));
REPORTER_ASSERT(r, a.getGenerationID() == b.getGenerationID());
auto img = SkImage::MakeFromBitmap(bm);
auto imgA = SkImage::MakeFromBitmap(a);
auto imgB = SkImage::MakeFromBitmap(b);
REPORTER_ASSERT(r, img->uniqueID() == bm.getGenerationID());
REPORTER_ASSERT(r, img->uniqueID() != imgA->uniqueID());
REPORTER_ASSERT(r, img->uniqueID() != imgB->uniqueID());
REPORTER_ASSERT(r, imgA->uniqueID() != imgB->uniqueID());
REPORTER_ASSERT(r, imgA->uniqueID() != a.getGenerationID());
REPORTER_ASSERT(r, imgB->uniqueID() != b.getGenerationID());
}
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