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cc / paint / scoped_raster_flags_unittest.cc [blame]
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/paint/scoped_raster_flags.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "cc/paint/paint_op.h"
#include "cc/paint/paint_shader.h"
#include "cc/test/skia_common.h"
#include "cc/test/test_paint_worklet_input.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkImage.h"
#include "third_party/skia/include/core/SkMatrix.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "third_party/skia/include/core/SkRect.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "third_party/skia/include/core/SkSize.h"
#include "third_party/skia/include/core/SkTileMode.h"
namespace cc {
namespace {
class MockImageProvider : public ImageProvider {
public:
MockImageProvider() = default;
~MockImageProvider() override { EXPECT_EQ(ref_count_, 0); }
ScopedResult GetRasterContent(const DrawImage& draw_image) override {
DCHECK(!draw_image.paint_image().IsPaintWorklet());
ref_count_++;
SkBitmap bitmap;
bitmap.allocN32Pixels(10, 10);
sk_sp<SkImage> image = SkImages::RasterFromBitmap(bitmap);
return ScopedResult(
DecodedDrawImage(image, nullptr, SkSize::MakeEmpty(),
SkSize::Make(1.0f, 1.0f), draw_image.filter_quality(),
true),
base::BindOnce(&MockImageProvider::UnrefImage, base::Unretained(this)));
}
void UnrefImage() {
ref_count_--;
CHECK_GE(ref_count_, 0);
}
int ref_count() const { return ref_count_; }
private:
int ref_count_ = 0;
};
class MockPaintWorkletImageProvider : public ImageProvider {
public:
MockPaintWorkletImageProvider() = default;
~MockPaintWorkletImageProvider() override = default;
ScopedResult GetRasterContent(const DrawImage& draw_image) override {
return ScopedResult(PaintRecord());
}
};
} // namespace
TEST(ScopedRasterFlagsTest, DecodePaintWorkletImageShader) {
float width = 100;
float height = 100;
scoped_refptr<TestPaintWorkletInput> input =
base::MakeRefCounted<TestPaintWorkletInput>(gfx::SizeF(width, height));
auto image = CreatePaintWorkletPaintImage(input);
SkMatrix pattern_matrix;
SkRect tile_rect = SkRect::MakeXYWH(0, 0, width, height);
auto shader =
PaintShader::MakeImage(image, SkTileMode::kRepeat, SkTileMode::kRepeat,
&pattern_matrix, &tile_rect);
PaintFlags flags;
flags.setShader(shader);
MockPaintWorkletImageProvider provider;
ScopedRasterFlags scoped_flags(&flags, &provider, SkMatrix::I(), 0, 1.0f);
ASSERT_TRUE(scoped_flags.flags());
EXPECT_TRUE(scoped_flags.flags()->getShader()->shader_type() ==
PaintShader::Type::kPaintRecord);
}
TEST(ScopedRasterFlagsTest, KeepsDecodesAlive) {
PaintOpBuffer buffer;
buffer.push<DrawImageOp>(CreateDiscardablePaintImage(gfx::Size(10, 10)), 0.f,
0.f);
buffer.push<DrawImageOp>(CreateDiscardablePaintImage(gfx::Size(10, 10)), 0.f,
0.f);
buffer.push<DrawImageOp>(CreateDiscardablePaintImage(gfx::Size(10, 10)), 0.f,
0.f);
auto record_shader = PaintShader::MakePaintRecord(
buffer.ReleaseAsRecord(), SkRect::MakeWH(100, 100), SkTileMode::kClamp,
SkTileMode::kClamp, &SkMatrix::I());
record_shader->set_has_animated_images(true);
MockImageProvider provider;
PaintFlags flags;
flags.setShader(record_shader);
{
ScopedRasterFlags scoped_flags(&flags, &provider, SkMatrix::I(), 0, 1.0f);
ASSERT_TRUE(scoped_flags.flags());
EXPECT_NE(scoped_flags.flags(), &flags);
SkPaint paint = scoped_flags.flags()->ToSkPaint();
ASSERT_TRUE(paint.getShader());
EXPECT_EQ(provider.ref_count(), 3);
}
EXPECT_EQ(provider.ref_count(), 0);
}
TEST(ScopedRasterFlagsTest, NoImageProvider) {
PaintFlags flags;
flags.setAlphaf(1.0f);
flags.setShader(PaintShader::MakeImage(
CreateDiscardablePaintImage(gfx::Size(10, 10)), SkTileMode::kClamp,
SkTileMode::kClamp, &SkMatrix::I()));
ScopedRasterFlags scoped_flags(&flags, nullptr, SkMatrix::I(), 0, 0.1f);
EXPECT_NE(scoped_flags.flags(), &flags);
EXPECT_EQ(scoped_flags.flags()->getAlphaf(), 1.0f * 0.1f);
}
TEST(ScopedRasterFlagsTest, ThinAliasedStroke) {
PaintFlags flags;
flags.setStyle(PaintFlags::kStroke_Style);
flags.setStrokeWidth(1);
flags.setAntiAlias(false);
struct {
SkMatrix ctm;
float alpha;
bool expect_same_flags;
bool expect_aa;
float expect_stroke_width;
float expect_alpha;
} tests[] = {
// No downscaling => no stroke change.
{SkMatrix::Scale(1.0f, 1.0f), 1.0f, true, false, 1.0f, 1.0f},
// Symmetric downscaling => modulated hairline stroke.
{SkMatrix::Scale(0.5f, 0.5f), 1.0f, false, false, 0.0f, 0.5f},
// Symmetric downscaling w/ alpha => modulated hairline stroke.
{SkMatrix::Scale(0.5f, 0.5f), 0.5f, false, false, 0.0f, 0.25f},
// Anisotropic scaling => AA stroke.
{SkMatrix::Scale(0.5f, 1.5f), 1.0f, false, true, 1.0f, 1.0f},
};
for (const auto& test : tests) {
ScopedRasterFlags scoped_flags(&flags, nullptr, test.ctm, 0, test.alpha);
ASSERT_TRUE(scoped_flags.flags());
EXPECT_EQ(scoped_flags.flags() == &flags, test.expect_same_flags);
EXPECT_EQ(scoped_flags.flags()->isAntiAlias(), test.expect_aa);
EXPECT_EQ(scoped_flags.flags()->getStrokeWidth(), test.expect_stroke_width);
EXPECT_LE(std::abs(scoped_flags.flags()->getAlphaf() - test.expect_alpha),
0.01f);
}
}
} // namespace cc