halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2014 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 | #include "Test.h" |
| 8 | #include "SkGraphics.h" |
| 9 | #include "SkCanvas.h" |
| 10 | |
| 11 | static const int kCanvasSize = 1; |
| 12 | static const int kBitmapSize = 16; |
| 13 | static const int kScale = 8; |
| 14 | |
| 15 | static size_t test_scaled_image_cache_useage() { |
| 16 | SkAutoTUnref<SkCanvas> canvas( |
| 17 | SkCanvas::NewRasterN32(kCanvasSize, kCanvasSize)); |
| 18 | SkBitmap bitmap; |
| 19 | SkAssertResult(bitmap.allocN32Pixels(kBitmapSize, kBitmapSize)); |
| 20 | SkScalar scaledSize = SkIntToScalar(kScale * kBitmapSize); |
| 21 | canvas->clipRect(SkRect::MakeLTRB(0, 0, scaledSize, scaledSize)); |
| 22 | SkPaint paint; |
| 23 | paint.setFilterLevel(SkPaint::kHigh_FilterLevel); |
| 24 | size_t bytesUsed = SkGraphics::GetImageCacheBytesUsed(); |
| 25 | canvas->drawBitmapRect(bitmap, |
| 26 | SkRect::MakeLTRB(0, 0, scaledSize, scaledSize), |
| 27 | &paint); |
| 28 | return SkGraphics::GetImageCacheBytesUsed() - bytesUsed; |
| 29 | } |
| 30 | |
| 31 | // http://crbug.com/389439 |
| 32 | DEF_TEST(ScaledImageCache_SingleAllocationByteLimit, reporter) { |
| 33 | size_t originalByteLimit = SkGraphics::GetImageCacheByteLimit(); |
| 34 | size_t originalAllocationLimit = |
| 35 | SkGraphics::GetImageCacheSingleAllocationByteLimit(); |
| 36 | |
| 37 | size_t size = kBitmapSize * kScale * kBitmapSize * kScale |
| 38 | * SkColorTypeBytesPerPixel(kN32_SkColorType); |
| 39 | |
| 40 | SkGraphics::SetImageCacheByteLimit(0); // clear cache |
| 41 | SkGraphics::SetImageCacheByteLimit(2 * size); |
| 42 | SkGraphics::SetImageCacheSingleAllocationByteLimit(0); |
| 43 | |
| 44 | REPORTER_ASSERT(reporter, size == test_scaled_image_cache_useage()); |
| 45 | |
| 46 | SkGraphics::SetImageCacheByteLimit(0); // clear cache |
| 47 | SkGraphics::SetImageCacheByteLimit(2 * size); |
| 48 | SkGraphics::SetImageCacheSingleAllocationByteLimit(size * 2); |
| 49 | |
| 50 | REPORTER_ASSERT(reporter, size == test_scaled_image_cache_useage()); |
| 51 | |
| 52 | SkGraphics::SetImageCacheByteLimit(0); // clear cache |
| 53 | SkGraphics::SetImageCacheByteLimit(2 * size); |
| 54 | SkGraphics::SetImageCacheSingleAllocationByteLimit(size / 2); |
| 55 | |
| 56 | REPORTER_ASSERT(reporter, 0 == test_scaled_image_cache_useage()); |
| 57 | |
| 58 | SkGraphics::SetImageCacheSingleAllocationByteLimit(originalAllocationLimit); |
| 59 | SkGraphics::SetImageCacheByteLimit(originalByteLimit); |
| 60 | } |