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 "tests/Test.h" 9 10 #include "include/core/SkBitmap.h" 11 #include "include/core/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. DEF_TEST(ImageBitmapIdentity,r)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 } 35