1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
|
/*
* Copyright 2012 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 "SkBitmapDevice.h"
#include "SkCanvas.h"
#include "SkTileGrid.h"
#include "SkTileGridPicture.h"
enum Tile {
kTopLeft_Tile = 0x1,
kTopRight_Tile = 0x2,
kBottomLeft_Tile = 0x4,
kBottomRight_Tile = 0x8,
kAll_Tile = kTopLeft_Tile | kTopRight_Tile | kBottomLeft_Tile | kBottomRight_Tile,
};
namespace {
class MockCanvas : public SkCanvas {
public:
MockCanvas(SkBaseDevice* device) : SkCanvas(device)
{}
virtual void drawRect(const SkRect& rect, const SkPaint&)
{
// This capture occurs before quick reject.
fRects.push(rect);
}
SkTDArray<SkRect> fRects;
};
}
class TileGridTest {
public:
static void verifyTileHits(skiatest::Reporter* reporter, SkIRect rect, uint32_t tileMask,
int borderPixels = 0) {
SkTileGridPicture::TileGridInfo info;
info.fMargin.set(borderPixels, borderPixels);
info.fOffset.setZero();
info.fTileInterval.set(10 - 2 * borderPixels, 10 - 2 * borderPixels);
SkTileGrid grid(2, 2, info, NULL);
grid.insert(NULL, rect, false);
REPORTER_ASSERT(reporter, grid.tile(0,0).count() ==
((tileMask & kTopLeft_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tile(1,0).count() ==
((tileMask & kTopRight_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tile(0,1).count() ==
((tileMask & kBottomLeft_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tile(1,1).count() ==
((tileMask & kBottomRight_Tile)? 1 : 0));
}
static void TestUnalignedQuery(skiatest::Reporter* reporter) {
// Use SkTileGridPicture to generate a SkTileGrid with a helper
SkTileGridPicture::TileGridInfo info;
info.fMargin.setEmpty();
info.fOffset.setZero();
info.fTileInterval.set(10, 10);
SkTileGridPicture picture(20, 20, info);
SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(8), SkIntToScalar(8));
SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(11), SkIntToScalar(11),
SkIntToScalar(1), SkIntToScalar(1));
SkCanvas* canvas = picture.beginRecording(20, 20, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
SkPaint paint;
canvas->drawRect(rect1, paint);
canvas->drawRect(rect2, paint);
picture.endRecording();
SkBitmap store;
store.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
store.allocPixels();
// Test parts of top-left tile
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-7.99f), SkFloatToScalar(-7.99f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
// Corner overlap
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-9.5f), SkFloatToScalar(-9.5f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
}
// Intersect bottom right tile, but does not overlap rect 2
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-16.0f), SkFloatToScalar(-16.0f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
}
// Out of bounds queries, snap to border tiles
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(2.0f), SkFloatToScalar(0.0f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(0.0f), SkFloatToScalar(2.0f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-22.0f), SkFloatToScalar(-16.0f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
}
{
SkBitmapDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-16.0f), SkFloatToScalar(-22.0f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
}
}
static void TestOverlapOffsetQueryAlignment(skiatest::Reporter* reporter) {
// Use SkTileGridPicture to generate a SkTileGrid with a helper
SkTileGridPicture::TileGridInfo info;
info.fMargin.set(1, 1);
info.fOffset.set(-1, -1);
info.fTileInterval.set(8, 8);
SkTileGridPicture picture(20, 20, info);
// rect landing entirely in top left tile
SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(1), SkIntToScalar(1));
// rect landing entirely in center tile
SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(12), SkIntToScalar(12),
SkIntToScalar(1), SkIntToScalar(1));
// rect landing entirely in bottomright tile
SkRect rect3 = SkRect::MakeXYWH(SkIntToScalar(19), SkIntToScalar(19),
SkIntToScalar(1), SkIntToScalar(1));
SkCanvas* canvas = picture.beginRecording(20, 20, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
SkPaint paint;
canvas->drawRect(rect1, paint);
canvas->drawRect(rect2, paint);
canvas->drawRect(rect3, paint);
picture.endRecording();
SkBitmap tileBitmap;
tileBitmap.setConfig(SkBitmap::kARGB_8888_Config, 10, 10);
tileBitmap.allocPixels();
SkBitmap moreThanATileBitmap;
moreThanATileBitmap.setConfig(SkBitmap::kARGB_8888_Config, 11, 11);
moreThanATileBitmap.allocPixels();
SkBitmap tinyBitmap;
tinyBitmap.setConfig(SkBitmap::kARGB_8888_Config, 2, 2);
tinyBitmap.allocPixels();
// Test parts of top-left tile
{
// The offset should cancel the top and left borders of the top left tile
// So a look-up at interval 0-10 should be grid aligned,
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
{
// Encroaching border by one pixel
SkBitmapDevice device(moreThanATileBitmap);
MockCanvas mockCanvas(&device);
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
}
{
// Tile stride is 8 (tileWidth - 2 * border pixels
// so translating by 8, should make query grid-aligned
// with middle tile.
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkIntToScalar(-8), SkIntToScalar(-8));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
}
{
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-7.9f), SkFloatToScalar(-7.9f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
}
{
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-8.1f), SkFloatToScalar(-8.1f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect3 == mockCanvas.fRects[1]);
}
{
// Regression test for crbug.com/234688
// Once the 2x2 device region is inset by margin, it yields an empty
// adjusted region, sitting right on top of the tile boundary.
SkBitmapDevice device(tinyBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-8.0f), SkFloatToScalar(-8.0f));
picture.draw(&mockCanvas);
// This test passes by not asserting. We do not validate the rects recorded
// because the result is numerically unstable (floating point equality).
// The content of any one of the four tiles of the tilegrid would be a valid
// result since any bbox that covers the center point of the canvas will be
// recorded in all four tiles.
}
}
static void Test(skiatest::Reporter* reporter) {
// Out of bounds
verifyTileHits(reporter, SkIRect::MakeXYWH(30, 0, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 30, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(-10, 0, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, -10, 1, 1), 0);
// Dilation for AA consideration
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 9, 9), kTopLeft_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 10, 10), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(9, 9, 1, 1), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(10, 10, 1, 1), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(11, 11, 1, 1), kBottomRight_Tile);
// BorderPixels
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 6, 6), kTopLeft_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 7, 7), kAll_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(9, 9, 1, 1), kAll_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(10, 10, 1, 1), kBottomRight_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(17, 17, 1, 1), kBottomRight_Tile, 1);
// BBoxes that overlap tiles
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 10, 1), kTopLeft_Tile | kTopRight_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 1, 10), kTopLeft_Tile |
kBottomLeft_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 10, 10), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(-10, -10, 40, 40), kAll_Tile);
TestUnalignedQuery(reporter);
TestOverlapOffsetQueryAlignment(reporter);
}
};
#include "TestClassDef.h"
DEFINE_TESTCLASS("TileGrid", TileGridTestClass, TileGridTest::Test)
|
