1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <gtest/gtest.h>
18
19#include <BakedOpState.h>
20#include <ClipArea.h>
21#include <RecordedOp.h>
22#include <tests/common/TestUtils.h>
23
24namespace android {
25namespace uirenderer {
26
27TEST(ResolvedRenderState, construct) {
28    LinearAllocator allocator;
29    Matrix4 translate10x20;
30    translate10x20.loadTranslate(10, 20, 0);
31
32    SkPaint paint;
33    ClipRect clip(Rect(100, 200));
34    RectOp recordedOp(Rect(30, 40, 100, 200), translate10x20, &clip, &paint);
35    {
36        // recorded with transform, no parent transform
37        auto parentSnapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(100, 200));
38        ResolvedRenderState state(allocator, *parentSnapshot, recordedOp, false, false);
39        EXPECT_MATRIX_APPROX_EQ(state.transform, translate10x20);
40        EXPECT_EQ(Rect(100, 200), state.clipRect());
41        EXPECT_EQ(Rect(40, 60, 100, 200), state.clippedBounds);  // translated and also clipped
42        EXPECT_EQ(OpClipSideFlags::Right | OpClipSideFlags::Bottom, state.clipSideFlags);
43    }
44    {
45        // recorded with transform and parent transform
46        auto parentSnapshot = TestUtils::makeSnapshot(translate10x20, Rect(100, 200));
47        ResolvedRenderState state(allocator, *parentSnapshot, recordedOp, false, false);
48
49        Matrix4 expectedTranslate;
50        expectedTranslate.loadTranslate(20, 40, 0);
51        EXPECT_MATRIX_APPROX_EQ(expectedTranslate, state.transform);
52
53        // intersection of parent & transformed child clip
54        EXPECT_EQ(Rect(10, 20, 100, 200), state.clipRect());
55
56        // translated and also clipped
57        EXPECT_EQ(Rect(50, 80, 100, 200), state.clippedBounds);
58        EXPECT_EQ(OpClipSideFlags::Right | OpClipSideFlags::Bottom, state.clipSideFlags);
59    }
60}
61
62TEST(ResolvedRenderState, computeLocalSpaceClip) {
63    LinearAllocator allocator;
64    Matrix4 translate10x20;
65    translate10x20.loadTranslate(10, 20, 0);
66
67    SkPaint paint;
68    ClipRect clip(Rect(100, 200));
69    RectOp recordedOp(Rect(1000, 1000), translate10x20, &clip, &paint);
70    {
71        // recorded with transform, no parent transform
72        auto parentSnapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(100, 200));
73        ResolvedRenderState state(allocator, *parentSnapshot, recordedOp, false, false);
74        EXPECT_EQ(Rect(-10, -20, 90, 180), state.computeLocalSpaceClip())
75                << "Local clip rect should be 100x200, offset by -10,-20";
76    }
77    {
78        // recorded with transform + parent transform
79        auto parentSnapshot = TestUtils::makeSnapshot(translate10x20, Rect(100, 200));
80        ResolvedRenderState state(allocator, *parentSnapshot, recordedOp, false, false);
81        EXPECT_EQ(Rect(-10, -20, 80, 160), state.computeLocalSpaceClip())
82                << "Local clip rect should be 90x190, offset by -10,-20";
83    }
84}
85
86const float HAIRLINE = 0.0f;
87
88// Note: bounds will be conservative, but not precise for non-hairline
89// - use approx bounds checks for these
90const float SEMI_HAIRLINE = 0.3f;
91
92struct StrokeTestCase {
93    float scale;
94    float strokeWidth;
95    const std::function<void(const ResolvedRenderState&)> validator;
96};
97
98const static StrokeTestCase sStrokeTestCases[] = {
99        {1, HAIRLINE,
100         [](const ResolvedRenderState& state) {
101             EXPECT_EQ(Rect(49.5f, 49.5f, 150.5f, 150.5f), state.clippedBounds);
102         }},
103        {1, SEMI_HAIRLINE,
104         [](const ResolvedRenderState& state) {
105             EXPECT_TRUE(state.clippedBounds.contains(49.5f, 49.5f, 150.5f, 150.5f));
106             EXPECT_TRUE(Rect(49, 49, 151, 151).contains(state.clippedBounds));
107         }},
108        {1, 20,
109         [](const ResolvedRenderState& state) {
110             EXPECT_EQ(Rect(40, 40, 160, 160), state.clippedBounds);
111         }},
112
113        // 3x3 scale:
114        {3, HAIRLINE,
115         [](const ResolvedRenderState& state) {
116             EXPECT_EQ(Rect(149.5f, 149.5f, 200, 200), state.clippedBounds);
117             EXPECT_EQ(OpClipSideFlags::Right | OpClipSideFlags::Bottom, state.clipSideFlags);
118         }},
119        {3, SEMI_HAIRLINE,
120         [](const ResolvedRenderState& state) {
121             EXPECT_TRUE(state.clippedBounds.contains(149.5f, 149.5f, 200, 200));
122             EXPECT_TRUE(Rect(149, 149, 200, 200).contains(state.clippedBounds));
123         }},
124        {3, 20,
125         [](const ResolvedRenderState& state) {
126             EXPECT_TRUE(state.clippedBounds.contains(120, 120, 200, 200));
127             EXPECT_TRUE(Rect(119, 119, 200, 200).contains(state.clippedBounds));
128         }},
129
130        // 0.5f x 0.5f scale
131        {0.5f, HAIRLINE,
132         [](const ResolvedRenderState& state) {
133             EXPECT_EQ(Rect(24.5f, 24.5f, 75.5f, 75.5f), state.clippedBounds);
134         }},
135        {0.5f, SEMI_HAIRLINE,
136         [](const ResolvedRenderState& state) {
137             EXPECT_TRUE(state.clippedBounds.contains(24.5f, 24.5f, 75.5f, 75.5f));
138             EXPECT_TRUE(Rect(24, 24, 76, 76).contains(state.clippedBounds));
139         }},
140        {0.5f, 20, [](const ResolvedRenderState& state) {
141             EXPECT_TRUE(state.clippedBounds.contains(19.5f, 19.5f, 80.5f, 80.5f));
142             EXPECT_TRUE(Rect(19, 19, 81, 81).contains(state.clippedBounds));
143         }}};
144
145TEST(ResolvedRenderState, construct_expandForStroke) {
146    LinearAllocator allocator;
147    // Loop over table of test cases and verify different combinations of stroke width and transform
148    for (auto&& testCase : sStrokeTestCases) {
149        SkPaint strokedPaint;
150        strokedPaint.setAntiAlias(true);
151        strokedPaint.setStyle(SkPaint::kStroke_Style);
152        strokedPaint.setStrokeWidth(testCase.strokeWidth);
153
154        ClipRect clip(Rect(200, 200));
155        RectOp recordedOp(Rect(50, 50, 150, 150), Matrix4::identity(), &clip, &strokedPaint);
156
157        Matrix4 snapshotMatrix;
158        snapshotMatrix.loadScale(testCase.scale, testCase.scale, 1);
159        auto parentSnapshot = TestUtils::makeSnapshot(snapshotMatrix, Rect(200, 200));
160
161        ResolvedRenderState state(allocator, *parentSnapshot, recordedOp, true, false);
162        testCase.validator(state);
163    }
164}
165
166TEST(BakedOpState, tryConstruct) {
167    Matrix4 translate100x0;
168    translate100x0.loadTranslate(100, 0, 0);
169
170    SkPaint paint;
171    ClipRect clip(Rect(100, 200));
172
173    LinearAllocator allocator;
174    RectOp successOp(Rect(30, 40, 100, 200), Matrix4::identity(), &clip, &paint);
175    auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(100, 200));
176    EXPECT_NE(nullptr, BakedOpState::tryConstruct(allocator, *snapshot, successOp))
177            << "successOp NOT rejected by clip, so should be constructed";
178    size_t successAllocSize = allocator.usedSize();
179    EXPECT_LE(64u, successAllocSize) << "relatively large alloc for non-rejected op";
180
181    RectOp rejectOp(Rect(30, 40, 100, 200), translate100x0, &clip, &paint);
182    EXPECT_EQ(nullptr, BakedOpState::tryConstruct(allocator, *snapshot, rejectOp))
183            << "rejectOp rejected by clip, so should not be constructed";
184
185    // NOTE: this relies on the clip having already been serialized by the op above
186    EXPECT_EQ(successAllocSize, allocator.usedSize()) << "no extra allocation used for rejected op";
187}
188
189TEST(BakedOpState, tryShadowOpConstruct) {
190    Matrix4 translate10x20;
191    translate10x20.loadTranslate(10, 20, 0);
192
193    LinearAllocator allocator;
194    {
195        auto snapshot = TestUtils::makeSnapshot(translate10x20, Rect());  // Note: empty clip
196        BakedOpState* bakedState =
197                BakedOpState::tryShadowOpConstruct(allocator, *snapshot, (ShadowOp*)0x1234);
198
199        EXPECT_EQ(nullptr, bakedState) << "op should be rejected by clip, so not constructed";
200        EXPECT_EQ(0u, allocator.usedSize()) << "no serialization, even for clip,"
201                                               "since op is quick rejected based on snapshot clip";
202    }
203    {
204        auto snapshot = TestUtils::makeSnapshot(translate10x20, Rect(100, 200));
205        BakedOpState* bakedState =
206                BakedOpState::tryShadowOpConstruct(allocator, *snapshot, (ShadowOp*)0x1234);
207
208        ASSERT_NE(nullptr, bakedState) << "NOT rejected by clip, so op should be constructed";
209        EXPECT_LE(64u, allocator.usedSize()) << "relatively large alloc for non-rejected op";
210
211        EXPECT_MATRIX_APPROX_EQ(translate10x20, bakedState->computedState.transform);
212        EXPECT_EQ(Rect(100, 200), bakedState->computedState.clippedBounds);
213    }
214}
215
216TEST(BakedOpState, tryStrokeableOpConstruct) {
217    LinearAllocator allocator;
218    {
219        // check regular rejection
220        SkPaint paint;
221        paint.setStyle(SkPaint::kStrokeAndFill_Style);
222        paint.setStrokeWidth(0.0f);
223        ClipRect clip(Rect(100, 200));
224        RectOp rejectOp(Rect(100, 200), Matrix4::identity(), &clip, &paint);
225        auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect());  // Note: empty clip
226        auto bakedState = BakedOpState::tryStrokeableOpConstruct(
227                allocator, *snapshot, rejectOp, BakedOpState::StrokeBehavior::StyleDefined, false);
228
229        EXPECT_EQ(nullptr, bakedState);
230        EXPECT_GT(8u,
231                  allocator.usedSize());  // no significant allocation space used for rejected op
232    }
233    {
234        // check simple unscaled expansion
235        SkPaint paint;
236        paint.setStyle(SkPaint::kStrokeAndFill_Style);
237        paint.setStrokeWidth(10.0f);
238        ClipRect clip(Rect(200, 200));
239        RectOp rejectOp(Rect(50, 50, 150, 150), Matrix4::identity(), &clip, &paint);
240        auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(200, 200));
241        auto bakedState = BakedOpState::tryStrokeableOpConstruct(
242                allocator, *snapshot, rejectOp, BakedOpState::StrokeBehavior::StyleDefined, false);
243
244        ASSERT_NE(nullptr, bakedState);
245        EXPECT_EQ(Rect(45, 45, 155, 155), bakedState->computedState.clippedBounds);
246        EXPECT_EQ(0, bakedState->computedState.clipSideFlags);
247    }
248    {
249        // check simple unscaled expansion, and fill style with stroke forced
250        SkPaint paint;
251        paint.setStyle(SkPaint::kFill_Style);
252        paint.setStrokeWidth(10.0f);
253        ClipRect clip(Rect(200, 200));
254        RectOp rejectOp(Rect(50, 50, 150, 150), Matrix4::identity(), &clip, &paint);
255        auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(200, 200));
256        auto bakedState = BakedOpState::tryStrokeableOpConstruct(
257                allocator, *snapshot, rejectOp, BakedOpState::StrokeBehavior::Forced, false);
258
259        ASSERT_NE(nullptr, bakedState);
260        EXPECT_EQ(Rect(45, 45, 155, 155), bakedState->computedState.clippedBounds);
261        EXPECT_EQ(0, bakedState->computedState.clipSideFlags);
262    }
263}
264
265}  // namespace uirenderer
266}  // namespace android
267