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