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| 1 /* |
| 2 * Copyright 2016 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "Test.h" |
| 9 |
| 10 #include "SkBitmap.h" |
| 11 #include "SkImage.h" |
| 12 |
| 13 // https://bug.skia.org/5096 |
| 14 // Test that when we make an image from a subset of a bitmap, that it |
| 15 // has a diff (ID, dimensions) from an image made from the entire |
| 16 // bitmap or a different subset of the image. |
| 17 DEF_TEST(ImageBitmapIdentity, r) { |
| 18 SkBitmap bm, a, b; |
| 19 bm.allocN32Pixels(32, 64); |
| 20 bm.eraseColor(SK_ColorBLACK); |
| 21 bm.setImmutable(); |
| 22 (void)bm.extractSubset(&a, SkIRect::MakeXYWH(0, 0, 32, 32)); |
| 23 (void)bm.extractSubset(&b, SkIRect::MakeXYWH(0, 32, 32, 32)); |
| 24 REPORTER_ASSERT(r, a.getGenerationID() == b.getGenerationID()); |
| 25 auto img = SkImage::MakeFromBitmap(bm); |
| 26 auto imgA = SkImage::MakeFromBitmap(a); |
| 27 auto imgB = SkImage::MakeFromBitmap(b); |
| 28 REPORTER_ASSERT(r, img->uniqueID() == bm.getGenerationID()); |
| 29 REPORTER_ASSERT(r, img->uniqueID() != imgA->uniqueID()); |
| 30 REPORTER_ASSERT(r, img->uniqueID() != imgB->uniqueID()); |
| 31 REPORTER_ASSERT(r, imgA->uniqueID() != imgB->uniqueID()); |
| 32 REPORTER_ASSERT(r, imgA->uniqueID() != a.getGenerationID()); |
| 33 REPORTER_ASSERT(r, imgB->uniqueID() != b.getGenerationID()); |
| 34 } |
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