1d1795b199
motivation: The ASAN bot routinely trips this unit test. R=tomhudson@chromium.org, tomhudson@google.com Author: halcanary@google.com Review URL: https://codereview.chromium.org/401833002
78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Test.h"
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#include "SkCanvas.h"
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#include "SkGraphics.h"
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#include "SkScaledImageCache.h"
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static const int kCanvasSize = 1;
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static const int kBitmapSize = 16;
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static const int kScale = 8;
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static bool is_in_scaled_image_cache(const SkBitmap& orig,
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SkScalar xScale,
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SkScalar yScale) {
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SkBitmap scaled;
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SkScaledImageCache::ID* id = SkScaledImageCache::FindAndLock(
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orig, SkScalarInvert(xScale), SkScalarInvert(yScale), &scaled);
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if (id) {
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SkScaledImageCache::Unlock(id);
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}
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return id != NULL;
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}
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// Draw a scaled bitmap, then return true iff it has been cached.
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static bool test_scaled_image_cache_useage() {
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SkAutoTUnref<SkCanvas> canvas(
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SkCanvas::NewRasterN32(kCanvasSize, kCanvasSize));
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SkBitmap bitmap;
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SkAssertResult(bitmap.allocN32Pixels(kBitmapSize, kBitmapSize));
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bitmap.eraseColor(0xFFFFFFFF);
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SkScalar scale = SkIntToScalar(kScale);
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SkScalar scaledSize = SkIntToScalar(kBitmapSize) * scale;
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canvas->clipRect(SkRect::MakeLTRB(0, 0, scaledSize, scaledSize));
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SkPaint paint;
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paint.setFilterLevel(SkPaint::kHigh_FilterLevel);
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canvas->drawBitmapRect(bitmap,
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SkRect::MakeLTRB(0, 0, scaledSize, scaledSize),
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&paint);
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return is_in_scaled_image_cache(bitmap, scale, scale);
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}
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// http://crbug.com/389439
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DEF_TEST(ScaledImageCache_SingleAllocationByteLimit, reporter) {
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size_t originalByteLimit = SkGraphics::GetImageCacheTotalByteLimit();
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size_t originalAllocationLimit =
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SkGraphics::GetImageCacheSingleAllocationByteLimit();
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size_t size = kBitmapSize * kScale * kBitmapSize * kScale
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* SkColorTypeBytesPerPixel(kN32_SkColorType);
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SkGraphics::SetImageCacheTotalByteLimit(0); // clear cache
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SkGraphics::SetImageCacheTotalByteLimit(2 * size);
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SkGraphics::SetImageCacheSingleAllocationByteLimit(0); // No limit
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REPORTER_ASSERT(reporter, test_scaled_image_cache_useage());
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SkGraphics::SetImageCacheTotalByteLimit(0); // clear cache
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SkGraphics::SetImageCacheTotalByteLimit(2 * size);
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SkGraphics::SetImageCacheSingleAllocationByteLimit(size * 2); // big enough
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REPORTER_ASSERT(reporter, test_scaled_image_cache_useage());
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SkGraphics::SetImageCacheTotalByteLimit(0); // clear cache
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SkGraphics::SetImageCacheTotalByteLimit(2 * size);
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SkGraphics::SetImageCacheSingleAllocationByteLimit(size / 2); // too small
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REPORTER_ASSERT(reporter, !test_scaled_image_cache_useage());
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SkGraphics::SetImageCacheSingleAllocationByteLimit(originalAllocationLimit);
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SkGraphics::SetImageCacheTotalByteLimit(originalByteLimit);
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}
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