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Side by Side Diff: tests/ScaledImageCache.cpp

Issue 518213003: Rename ScaledImageCache.cpp to SkResourceCacheTest.cpp (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Rebase master Created 6 years, 3 months ago
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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 "SkCanvas.h"
9 #include "SkGraphics.h"
10 #include "SkBitmapCache.h"
11
12 static const int kCanvasSize = 1;
13 static const int kBitmapSize = 16;
14 static const int kScale = 8;
15
16 static bool is_in_scaled_image_cache(const SkBitmap& orig,
17 SkScalar xScale,
18 SkScalar yScale) {
19 SkBitmap scaled;
20 float roundedImageWidth = SkScalarRoundToScalar(orig.width() * xScale);
21 float roundedImageHeight = SkScalarRoundToScalar(orig.height() * xScale);
22 return SkBitmapCache::Find(orig, roundedImageWidth, roundedImageHeight, &sca led);
23 }
24
25 // Draw a scaled bitmap, then return true iff it has been cached.
26 static bool test_scaled_image_cache_useage() {
27 SkAutoTUnref<SkCanvas> canvas(
28 SkCanvas::NewRasterN32(kCanvasSize, kCanvasSize));
29 SkBitmap bitmap;
30 SkAssertResult(bitmap.allocN32Pixels(kBitmapSize, kBitmapSize));
31 bitmap.eraseColor(0xFFFFFFFF);
32 SkScalar scale = SkIntToScalar(kScale);
33 SkScalar scaledSize = SkIntToScalar(kBitmapSize) * scale;
34 canvas->clipRect(SkRect::MakeLTRB(0, 0, scaledSize, scaledSize));
35 SkPaint paint;
36 paint.setFilterLevel(SkPaint::kHigh_FilterLevel);
37
38 canvas->drawBitmapRect(bitmap,
39 SkRect::MakeLTRB(0, 0, scaledSize, scaledSize),
40 &paint);
41
42 return is_in_scaled_image_cache(bitmap, scale, scale);
43 }
44
45 // http://crbug.com/389439
46 DEF_TEST(ResourceCache_SingleAllocationByteLimit, reporter) {
47 size_t originalByteLimit = SkGraphics::GetResourceCacheTotalByteLimit();
48 size_t originalAllocationLimit =
49 SkGraphics::GetResourceCacheSingleAllocationByteLimit();
50
51 size_t size = kBitmapSize * kScale * kBitmapSize * kScale
52 * SkColorTypeBytesPerPixel(kN32_SkColorType);
53
54 SkGraphics::SetResourceCacheTotalByteLimit(0); // clear cache
55 SkGraphics::SetResourceCacheTotalByteLimit(2 * size);
56 SkGraphics::SetResourceCacheSingleAllocationByteLimit(0); // No limit
57
58 REPORTER_ASSERT(reporter, test_scaled_image_cache_useage());
59
60 SkGraphics::SetResourceCacheTotalByteLimit(0); // clear cache
61 SkGraphics::SetResourceCacheTotalByteLimit(2 * size);
62 SkGraphics::SetResourceCacheSingleAllocationByteLimit(size * 2); // big eno ugh
63
64 REPORTER_ASSERT(reporter, test_scaled_image_cache_useage());
65
66 SkGraphics::SetResourceCacheTotalByteLimit(0); // clear cache
67 SkGraphics::SetResourceCacheTotalByteLimit(2 * size);
68 SkGraphics::SetResourceCacheSingleAllocationByteLimit(size / 2); // too sma ll
69
70 REPORTER_ASSERT(reporter, !test_scaled_image_cache_useage());
71
72 SkGraphics::SetResourceCacheSingleAllocationByteLimit(originalAllocationLimi t);
73 SkGraphics::SetResourceCacheTotalByteLimit(originalByteLimit);
74 }
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