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01a52b9947
If Rasterization fails, i.e. image.is_valid() is false, the cache might try rasterizing the image again on the next frame. Not only is this wasteful put might also prevent other pictures to be cached within the current frame budget.
153 lines
4.5 KiB
C++
153 lines
4.5 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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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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#include "flutter/flow/raster_cache.h"
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#include "flutter/flow/layers/container_layer.h"
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#include "gtest/gtest.h"
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#include "third_party/skia/include/core/SkPicture.h"
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#include "third_party/skia/include/core/SkPictureRecorder.h"
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namespace flutter {
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namespace testing {
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namespace {
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sk_sp<SkPicture> GetSamplePicture() {
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SkPictureRecorder recorder;
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recorder.beginRecording(SkRect::MakeWH(150, 100));
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SkPaint paint;
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paint.setColor(SK_ColorRED);
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recorder.getRecordingCanvas()->drawRect(SkRect::MakeXYWH(10, 10, 80, 80),
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paint);
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return recorder.finishRecordingAsPicture();
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}
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} // namespace
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TEST(RasterCache, SimpleInitialization) {
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flutter::RasterCache cache;
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ASSERT_TRUE(true);
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}
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TEST(RasterCache, ThresholdIsRespectedForPictures) {
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size_t threshold = 2;
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flutter::RasterCache cache(threshold);
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SkMatrix matrix = SkMatrix::I();
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auto picture = GetSamplePicture();
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sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
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ASSERT_FALSE(
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cache.Prepare(NULL, picture.get(), matrix, srgb.get(), true, false));
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// 1st access.
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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cache.SweepAfterFrame();
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ASSERT_FALSE(
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cache.Prepare(NULL, picture.get(), matrix, srgb.get(), true, false));
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// 2st access.
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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cache.SweepAfterFrame();
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// Now Prepare should cache it.
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ASSERT_TRUE(
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cache.Prepare(NULL, picture.get(), matrix, srgb.get(), true, false));
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ASSERT_TRUE(cache.Get(*picture, matrix).is_valid());
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}
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TEST(RasterCache, ThresholdIsRespectedForLayers) {
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size_t threshold = 2;
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flutter::RasterCache cache(threshold);
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SkMatrix matrix = SkMatrix::I();
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ContainerLayer layer;
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sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
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ASSERT_FALSE(cache.Prepare(nullptr, &layer, matrix));
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ASSERT_FALSE(cache.Prepare(nullptr, &layer, matrix));
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ASSERT_FALSE(cache.Prepare(nullptr, &layer, matrix));
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// 1st access.
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ASSERT_FALSE(cache.Get(&layer, matrix).is_valid());
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ASSERT_FALSE(cache.Prepare(nullptr, &layer, matrix));
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// 2st access.
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ASSERT_FALSE(cache.Get(&layer, matrix).is_valid());
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// Calling Prepare now would crash due to the nullptr.
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}
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TEST(RasterCache, PictureCacheLimitPerFrameIsRespectedWhenZero) {
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size_t picture_cache_limit_per_frame = 0;
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flutter::RasterCache cache(3, picture_cache_limit_per_frame);
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SkMatrix matrix = SkMatrix::I();
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auto picture = GetSamplePicture();
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sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
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ASSERT_FALSE(
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cache.Prepare(NULL, picture.get(), matrix, srgb.get(), true, false));
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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}
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TEST(RasterCache, SweepsRemoveUnusedFrames) {
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size_t threshold = 1;
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flutter::RasterCache cache(threshold);
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SkMatrix matrix = SkMatrix::I();
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auto picture = GetSamplePicture();
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sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
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ASSERT_FALSE(cache.Prepare(NULL, picture.get(), matrix, srgb.get(), true,
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false)); // 1
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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cache.SweepAfterFrame();
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ASSERT_TRUE(cache.Prepare(NULL, picture.get(), matrix, srgb.get(), true,
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false)); // 2
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ASSERT_TRUE(cache.Get(*picture, matrix).is_valid());
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cache.SweepAfterFrame();
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cache.SweepAfterFrame(); // Extra frame without a Get image access.
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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}
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TEST(RasterCache, TryRasterizngOnlyOnce) {
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size_t threshold = 1;
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flutter::RasterCache cache(threshold);
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SkMatrix matrix = SkMatrix::I();
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// Test picture too large to successfully rasterize.
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auto picture = SkPicture::MakePlaceholder(SkRect::MakeWH(2e12, 2e12));
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sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
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ASSERT_FALSE(cache.Prepare(nullptr, picture.get(), matrix, srgb.get(), true,
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false)); // 1
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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// Rasterization ran, though Get() below returns an invalid image.
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ASSERT_TRUE(cache.Prepare(nullptr, picture.get(), matrix, srgb.get(), true,
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false)); // 2
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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// This time we should not try again to rasterize.
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ASSERT_FALSE(cache.Prepare(nullptr, picture.get(), matrix, srgb.get(), true,
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false)); // 2
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ASSERT_FALSE(cache.Get(*picture, matrix).is_valid());
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}
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} // namespace testing
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} // namespace flutter
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