| Flutter Impeller |

entity_unittests.cc
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <algorithm>
6 #include <cstring>
7 #include <memory>
8 #include <optional>
9 #include <utility>
10 #include <vector>
11
12 #include "flutter/display_list/geometry/dl_path_builder.h"
13 #include "flutter/display_list/testing/dl_test_snippets.h"
14 #include "fml/logging.h"
15 #include "gtest/gtest.h"
16 #include "impeller/core/device_buffer.h"
17 #include "impeller/core/formats.h"
18 #include "impeller/core/host_buffer.h"
19 #include "impeller/core/raw_ptr.h"
20 #include "impeller/core/texture_descriptor.h"
21 #include "impeller/entity/contents/conical_gradient_contents.h"
22 #include "impeller/entity/contents/content_context.h"
23 #include "impeller/entity/contents/contents.h"
24 #include "impeller/entity/contents/filters/color_filter_contents.h"
25 #include "impeller/entity/contents/filters/filter_contents.h"
26 #include "impeller/entity/contents/filters/gaussian_blur_filter_contents.h"
27 #include "impeller/entity/contents/filters/inputs/filter_input.h"
28 #include "impeller/entity/contents/linear_gradient_contents.h"
29 #include "impeller/entity/contents/radial_gradient_contents.h"
30 #include "impeller/entity/contents/runtime_effect_contents.h"
31 #include "impeller/entity/contents/solid_color_contents.h"
32 #include "impeller/entity/contents/solid_rrect_blur_contents.h"
33 #include "impeller/entity/contents/sweep_gradient_contents.h"
34 #include "impeller/entity/contents/text_contents.h"
35 #include "impeller/entity/contents/texture_contents.h"
36 #include "impeller/entity/contents/tiled_texture_contents.h"
37 #include "impeller/entity/entity.h"
38 #include "impeller/entity/entity_playground.h"
39 #include "impeller/entity/geometry/geometry.h"
40 #include "impeller/entity/geometry/point_field_geometry.h"
41 #include "impeller/entity/geometry/round_superellipse_geometry.h"
42 #include "impeller/entity/geometry/stroke_path_geometry.h"
43 #include "impeller/entity/geometry/superellipse_geometry.h"
44 #include "impeller/geometry/color.h"
45 #include "impeller/geometry/geometry_asserts.h"
46 #include "impeller/geometry/point.h"
47 #include "impeller/geometry/sigma.h"
48 #include "impeller/geometry/vector.h"
49 #include "impeller/playground/playground.h"
50 #include "impeller/playground/widgets.h"
51 #include "impeller/renderer/command.h"
52 #include "impeller/renderer/pipeline_descriptor.h"
53 #include "impeller/renderer/render_pass.h"
54 #include "impeller/renderer/render_target.h"
55 #include "impeller/renderer/testing/mocks.h"
56 #include "impeller/renderer/vertex_buffer_builder.h"
57 #include "third_party/imgui/imgui.h"
58
59 // TODO(zanderso): https://github.com/flutter/flutter/issues/127701
60 // NOLINTBEGIN(bugprone-unchecked-optional-access)
61
62 namespace impeller {
63 namespace testing {
64
65 using EntityTest = EntityPlayground;
66 INSTANTIATE_PLAYGROUND_SUITE(EntityTest);
67
68 Rect RectMakeCenterSize(Point center, Size size) {
69 return Rect::MakeSize(size).Shift(center - size / 2);
70 }
71
72 TEST_P(EntityTest, CanCreateEntity) {
73 Entity entity;
74 ASSERT_TRUE(entity.GetTransform().IsIdentity());
75 }
76
77 TEST_P(EntityTest, FilterCoverageRespectsCropRect) {
78 auto image = CreateTextureForFixture("boston.jpg");
79 auto filter = ColorFilterContents::MakeBlend(BlendMode::kSoftLight,
80 FilterInput::Make({image}));
81
82 // Without the crop rect (default behavior).
83 {
84 auto actual = filter->GetCoverage({});
85 auto expected = Rect::MakeSize(image->GetSize());
86
87 ASSERT_TRUE(actual.has_value());
88 ASSERT_RECT_NEAR(actual.value(), expected);
89 }
90
91 // With the crop rect.
92 {
93 auto expected = Rect::MakeLTRB(50, 50, 100, 100);
94 filter->SetCoverageHint(expected);
95 auto actual = filter->GetCoverage({});
96
97 ASSERT_TRUE(actual.has_value());
98 ASSERT_RECT_NEAR(actual.value(), expected);
99 }
100 }
101
102 TEST_P(EntityTest, GeometryBoundsAreTransformed) {
103 auto geometry = Geometry::MakeRect(Rect::MakeXYWH(100, 100, 100, 100));
104 auto transform = Matrix::MakeScale({2.0, 2.0, 2.0});
105
106 ASSERT_RECT_NEAR(geometry->GetCoverage(transform).value(),
107 Rect::MakeXYWH(200, 200, 200, 200));
108 }
109
110 TEST_P(EntityTest, ThreeStrokesInOnePath) {
111 flutter::DlPath path = flutter::DlPathBuilder{}
112 .MoveTo({100, 100})
113 .LineTo({100, 200})
114 .MoveTo({100, 300})
115 .LineTo({100, 400})
116 .MoveTo({100, 500})
117 .LineTo({100, 600})
118 .TakePath();
119
120 Entity entity;
121 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
122 auto contents = std::make_unique<SolidColorContents>();
123
124 std::unique_ptr<Geometry> geom =
125 Geometry::MakeStrokePath(path, {.width = 5.0f});
126 contents->SetGeometry(geom.get());
127 contents->SetColor(Color::Red());
128 entity.SetContents(std::move(contents));
129 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
130 }
131
132 TEST_P(EntityTest, StrokeWithTextureContents) {
133 auto bridge = CreateTextureForFixture("bay_bridge.jpg");
134 flutter::DlPath path = flutter::DlPathBuilder{}
135 .MoveTo({100, 100})
136 .LineTo({100, 200})
137 .MoveTo({100, 300})
138 .LineTo({100, 400})
139 .MoveTo({100, 500})
140 .LineTo({100, 600})
141 .TakePath();
142
143 Entity entity;
144 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
145 auto contents = std::make_unique<TiledTextureContents>();
146 std::unique_ptr<Geometry> geom =
147 Geometry::MakeStrokePath(path, {.width = 100.0f});
148 contents->SetGeometry(geom.get());
149 contents->SetTexture(bridge);
150 contents->SetTileModes(Entity::TileMode::kClamp, Entity::TileMode::kClamp);
151 entity.SetContents(std::move(contents));
152 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
153 }
154
155 TEST_P(EntityTest, TriangleInsideASquare) {
156 auto callback = [&](ContentContext& context, RenderPass& pass) {
157 Point offset(100, 100);
158
159 static PlaygroundPoint point_a(Point(10, 10) + offset, 20, Color::White());
160 Point a = DrawPlaygroundPoint(point_a);
161 static PlaygroundPoint point_b(Point(210, 10) + offset, 20, Color::White());
162 Point b = DrawPlaygroundPoint(point_b);
163 static PlaygroundPoint point_c(Point(210, 210) + offset, 20,
164 Color::White());
165 Point c = DrawPlaygroundPoint(point_c);
166 static PlaygroundPoint point_d(Point(10, 210) + offset, 20, Color::White());
167 Point d = DrawPlaygroundPoint(point_d);
168 static PlaygroundPoint point_e(Point(50, 50) + offset, 20, Color::White());
169 Point e = DrawPlaygroundPoint(point_e);
170 static PlaygroundPoint point_f(Point(100, 50) + offset, 20, Color::White());
171 Point f = DrawPlaygroundPoint(point_f);
172 static PlaygroundPoint point_g(Point(50, 150) + offset, 20, Color::White());
173 Point g = DrawPlaygroundPoint(point_g);
174 flutter::DlPath path = flutter::DlPathBuilder{}
175 .MoveTo(a)
176 .LineTo(b)
177 .LineTo(c)
178 .LineTo(d)
179 .Close()
180 .MoveTo(e)
181 .LineTo(f)
182 .LineTo(g)
183 .Close()
184 .TakePath();
185
186 Entity entity;
187 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
188 auto contents = std::make_unique<SolidColorContents>();
189 std::unique_ptr<Geometry> geom =
190 Geometry::MakeStrokePath(path, {.width = 20.0});
191 contents->SetGeometry(geom.get());
192 contents->SetColor(Color::Red());
193 entity.SetContents(std::move(contents));
194
195 return entity.Render(context, pass);
196 };
197 ASSERT_TRUE(OpenPlaygroundHere(callback));
198 }
199
200 TEST_P(EntityTest, StrokeCapAndJoinTest) {
201 const Point padding(300, 250);
202 const Point margin(140, 180);
203
204 auto callback = [&](ContentContext& context, RenderPass& pass) {
205 // Slightly above sqrt(2) by default, so that right angles are just below
206 // the limit and acute angles are over the limit (causing them to get
207 // beveled).
208 static Scalar miter_limit = 1.41421357;
209 static Scalar width = 30;
210
211 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
212 {
213 ImGui::SliderFloat("Miter limit", &miter_limit, 0, 30);
214 ImGui::SliderFloat("Stroke width", &width, 0, 100);
215 if (ImGui::Button("Reset")) {
216 miter_limit = 1.41421357;
217 width = 30;
218 }
219 }
220 ImGui::End();
221
222 auto world_matrix = Matrix::MakeScale(GetContentScale());
223 auto render_path = [width = width, &context, &pass, &world_matrix](
224 const flutter::DlPath& path, Cap cap, Join join) {
225 auto contents = std::make_unique<SolidColorContents>();
226 std::unique_ptr<Geometry> geom =
227 Geometry::MakeStrokePath(path, {
228 .width = width,
229 .cap = cap,
230 .join = join,
231 .miter_limit = miter_limit,
232 });
233 contents->SetGeometry(geom.get());
234 contents->SetColor(Color::Red());
235
236 Entity entity;
237 entity.SetTransform(world_matrix);
238 entity.SetContents(std::move(contents));
239
240 auto coverage = entity.GetCoverage();
241 if (coverage.has_value()) {
242 auto bounds_contents = std::make_unique<SolidColorContents>();
243
244 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(
245 flutter::DlPath::MakeRect(entity.GetCoverage().value()));
246
247 bounds_contents->SetGeometry(geom.get());
248 bounds_contents->SetColor(Color::Green().WithAlpha(0.5));
249 Entity bounds_entity;
250 bounds_entity.SetContents(std::move(bounds_contents));
251 bounds_entity.Render(context, pass);
252 }
253
254 entity.Render(context, pass);
255 };
256
257 const Point a_def(0, 0), b_def(0, 100), c_def(150, 0), d_def(150, -100),
258 e_def(75, 75);
259 const Scalar r = 30;
260 // Cap::kButt demo.
261 {
262 Point off = Point(0, 0) * padding + margin;
263 static PlaygroundPoint point_a(off + a_def, r, Color::Black());
264 static PlaygroundPoint point_b(off + b_def, r, Color::White());
265 auto [a, b] = DrawPlaygroundLine(point_a, point_b);
266 static PlaygroundPoint point_c(off + c_def, r, Color::Black());
267 static PlaygroundPoint point_d(off + d_def, r, Color::White());
268 auto [c, d] = DrawPlaygroundLine(point_c, point_d);
269 render_path(flutter::DlPathBuilder{} //
270 .MoveTo(a)
271 .CubicCurveTo(b, d, c)
272 .TakePath(),
273 Cap::kButt, Join::kBevel);
274 }
275
276 // Cap::kSquare demo.
277 {
278 Point off = Point(1, 0) * padding + margin;
279 static PlaygroundPoint point_a(off + a_def, r, Color::Black());
280 static PlaygroundPoint point_b(off + b_def, r, Color::White());
281 auto [a, b] = DrawPlaygroundLine(point_a, point_b);
282 static PlaygroundPoint point_c(off + c_def, r, Color::Black());
283 static PlaygroundPoint point_d(off + d_def, r, Color::White());
284 auto [c, d] = DrawPlaygroundLine(point_c, point_d);
285 render_path(flutter::DlPathBuilder{} //
286 .MoveTo(a)
287 .CubicCurveTo(b, d, c)
288 .TakePath(),
289 Cap::kSquare, Join::kBevel);
290 }
291
292 // Cap::kRound demo.
293 {
294 Point off = Point(2, 0) * padding + margin;
295 static PlaygroundPoint point_a(off + a_def, r, Color::Black());
296 static PlaygroundPoint point_b(off + b_def, r, Color::White());
297 auto [a, b] = DrawPlaygroundLine(point_a, point_b);
298 static PlaygroundPoint point_c(off + c_def, r, Color::Black());
299 static PlaygroundPoint point_d(off + d_def, r, Color::White());
300 auto [c, d] = DrawPlaygroundLine(point_c, point_d);
301 render_path(flutter::DlPathBuilder{} //
302 .MoveTo(a)
303 .CubicCurveTo(b, d, c)
304 .TakePath(),
305 Cap::kRound, Join::kBevel);
306 }
307
308 // Join::kBevel demo.
309 {
310 Point off = Point(0, 1) * padding + margin;
311 static PlaygroundPoint point_a =
312 PlaygroundPoint(off + a_def, r, Color::White());
313 static PlaygroundPoint point_b =
314 PlaygroundPoint(off + e_def, r, Color::White());
315 static PlaygroundPoint point_c =
316 PlaygroundPoint(off + c_def, r, Color::White());
317 Point a = DrawPlaygroundPoint(point_a);
318 Point b = DrawPlaygroundPoint(point_b);
319 Point c = DrawPlaygroundPoint(point_c);
320 render_path(flutter::DlPathBuilder{} //
321 .MoveTo(a)
322 .LineTo(b)
323 .LineTo(c)
324 .Close()
325 .TakePath(),
326 Cap::kButt, Join::kBevel);
327 }
328
329 // Join::kMiter demo.
330 {
331 Point off = Point(1, 1) * padding + margin;
332 static PlaygroundPoint point_a(off + a_def, r, Color::White());
333 static PlaygroundPoint point_b(off + e_def, r, Color::White());
334 static PlaygroundPoint point_c(off + c_def, r, Color::White());
335 Point a = DrawPlaygroundPoint(point_a);
336 Point b = DrawPlaygroundPoint(point_b);
337 Point c = DrawPlaygroundPoint(point_c);
338 render_path(flutter::DlPathBuilder{} //
339 .MoveTo(a)
340 .LineTo(b)
341 .LineTo(c)
342 .Close()
343 .TakePath(),
344 Cap::kButt, Join::kMiter);
345 }
346
347 // Join::kRound demo.
348 {
349 Point off = Point(2, 1) * padding + margin;
350 static PlaygroundPoint point_a(off + a_def, r, Color::White());
351 static PlaygroundPoint point_b(off + e_def, r, Color::White());
352 static PlaygroundPoint point_c(off + c_def, r, Color::White());
353 Point a = DrawPlaygroundPoint(point_a);
354 Point b = DrawPlaygroundPoint(point_b);
355 Point c = DrawPlaygroundPoint(point_c);
356 render_path(flutter::DlPathBuilder{} //
357 .MoveTo(a)
358 .LineTo(b)
359 .LineTo(c)
360 .Close()
361 .TakePath(),
362 Cap::kButt, Join::kRound);
363 }
364
365 return true;
366 };
367 ASSERT_TRUE(OpenPlaygroundHere(callback));
368 }
369
370 TEST_P(EntityTest, CubicCurveTest) {
371 // Compare with https://fiddle.skia.org/c/b3625f26122c9de7afe7794fcf25ead3
372 flutter::DlPath path =
373 flutter::DlPathBuilder{}
374 .MoveTo({237.164, 125.003})
375 .CubicCurveTo({236.709, 125.184}, {236.262, 125.358},
376 {235.81, 125.538})
377 .CubicCurveTo({235.413, 125.68}, {234.994, 125.832},
378 {234.592, 125.977})
379 .CubicCurveTo({234.592, 125.977}, {234.591, 125.977},
380 {234.59, 125.977})
381 .CubicCurveTo({222.206, 130.435}, {207.708, 135.753},
382 {192.381, 141.429})
383 .CubicCurveTo({162.77, 151.336}, {122.17, 156.894}, {84.1123, 160})
384 .Close()
385 .TakePath();
386 Entity entity;
387 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
388
389 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
390
391 auto contents = std::make_shared<SolidColorContents>();
392 contents->SetColor(Color::Red());
393 contents->SetGeometry(geom.get());
394
395 entity.SetContents(contents);
396 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
397 }
398
399 TEST_P(EntityTest, CanDrawCorrectlyWithRotatedTransform) {
400 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
401 const char* input_axis[] = {"X", "Y", "Z"};
402 static int rotation_axis_index = 0;
403 static float rotation = 0;
404 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
405 ImGui::SliderFloat("Rotation", &rotation, -kPi, kPi);
406 ImGui::Combo("Rotation Axis", &rotation_axis_index, input_axis,
407 sizeof(input_axis) / sizeof(char*));
408 Matrix rotation_matrix;
409 switch (rotation_axis_index) {
410 case 0:
411 rotation_matrix = Matrix::MakeRotationX(Radians(rotation));
412 break;
413 case 1:
414 rotation_matrix = Matrix::MakeRotationY(Radians(rotation));
415 break;
416 case 2:
417 rotation_matrix = Matrix::MakeRotationZ(Radians(rotation));
418 break;
419 default:
420 rotation_matrix = Matrix{};
421 break;
422 }
423
424 if (ImGui::Button("Reset")) {
425 rotation = 0;
426 }
427 ImGui::End();
428 Matrix current_transform =
429 Matrix::MakeScale(GetContentScale())
430 .MakeTranslation(
431 Vector3(Point(pass.GetRenderTargetSize().width / 2.0,
432 pass.GetRenderTargetSize().height / 2.0)));
433 Matrix result_transform = current_transform * rotation_matrix;
434 flutter::DlPath path =
435 flutter::DlPath::MakeRect(Rect::MakeXYWH(-300, -400, 600, 800));
436
437 Entity entity;
438 entity.SetTransform(result_transform);
439
440 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
441
442 auto contents = std::make_shared<SolidColorContents>();
443 contents->SetColor(Color::Red());
444 contents->SetGeometry(geom.get());
445
446 entity.SetContents(contents);
447 return entity.Render(context, pass);
448 };
449 ASSERT_TRUE(OpenPlaygroundHere(callback));
450 }
451
452 TEST_P(EntityTest, CubicCurveAndOverlapTest) {
453 // Compare with https://fiddle.skia.org/c/7a05a3e186c65a8dfb732f68020aae06
454 flutter::DlPath path =
455 flutter::DlPathBuilder{}
456 .MoveTo({359.934, 96.6335})
457 .CubicCurveTo({358.189, 96.7055}, {356.436, 96.7908},
458 {354.673, 96.8895})
459 .CubicCurveTo({354.571, 96.8953}, {354.469, 96.9016},
460 {354.367, 96.9075})
461 .CubicCurveTo({352.672, 97.0038}, {350.969, 97.113},
462 {349.259, 97.2355})
463 .CubicCurveTo({349.048, 97.2506}, {348.836, 97.2678},
464 {348.625, 97.2834})
465 .CubicCurveTo({347.019, 97.4014}, {345.407, 97.5299},
466 {343.789, 97.6722})
467 .CubicCurveTo({343.428, 97.704}, {343.065, 97.7402},
468 {342.703, 97.7734})
469 .CubicCurveTo({341.221, 97.9086}, {339.736, 98.0505},
470 {338.246, 98.207})
471 .CubicCurveTo({337.702, 98.2642}, {337.156, 98.3292},
472 {336.612, 98.3894})
473 .CubicCurveTo({335.284, 98.5356}, {333.956, 98.6837},
474 {332.623, 98.8476})
475 .CubicCurveTo({332.495, 98.8635}, {332.366, 98.8818},
476 {332.237, 98.8982})
477 .LineTo({332.237, 102.601})
478 .LineTo({321.778, 102.601})
479 .LineTo({321.778, 100.382})
480 .CubicCurveTo({321.572, 100.413}, {321.367, 100.442},
481 {321.161, 100.476})
482 .CubicCurveTo({319.22, 100.79}, {317.277, 101.123},
483 {315.332, 101.479})
484 .CubicCurveTo({315.322, 101.481}, {315.311, 101.482},
485 {315.301, 101.484})
486 .LineTo({310.017, 105.94})
487 .LineTo({309.779, 105.427})
488 .LineTo({314.403, 101.651})
489 .CubicCurveTo({314.391, 101.653}, {314.379, 101.656},
490 {314.368, 101.658})
491 .CubicCurveTo({312.528, 102.001}, {310.687, 102.366},
492 {308.846, 102.748})
493 .CubicCurveTo({307.85, 102.955}, {306.855, 103.182}, {305.859, 103.4})
494 .CubicCurveTo({305.048, 103.579}, {304.236, 103.75},
495 {303.425, 103.936})
496 .LineTo({299.105, 107.578})
497 .LineTo({298.867, 107.065})
498 .LineTo({302.394, 104.185})
499 .LineTo({302.412, 104.171})
500 .CubicCurveTo({301.388, 104.409}, {300.366, 104.67},
501 {299.344, 104.921})
502 .CubicCurveTo({298.618, 105.1}, {297.89, 105.269}, {297.165, 105.455})
503 .CubicCurveTo({295.262, 105.94}, {293.36, 106.445},
504 {291.462, 106.979})
505 .CubicCurveTo({291.132, 107.072}, {290.802, 107.163},
506 {290.471, 107.257})
507 .CubicCurveTo({289.463, 107.544}, {288.455, 107.839},
508 {287.449, 108.139})
509 .CubicCurveTo({286.476, 108.431}, {285.506, 108.73},
510 {284.536, 109.035})
511 .CubicCurveTo({283.674, 109.304}, {282.812, 109.579},
512 {281.952, 109.859})
513 .CubicCurveTo({281.177, 110.112}, {280.406, 110.377},
514 {279.633, 110.638})
515 .CubicCurveTo({278.458, 111.037}, {277.256, 111.449},
516 {276.803, 111.607})
517 .CubicCurveTo({276.76, 111.622}, {276.716, 111.637},
518 {276.672, 111.653})
519 .CubicCurveTo({275.017, 112.239}, {273.365, 112.836},
520 {271.721, 113.463})
521 .LineTo({271.717, 113.449})
522 .CubicCurveTo({271.496, 113.496}, {271.238, 113.559},
523 {270.963, 113.628})
524 .CubicCurveTo({270.893, 113.645}, {270.822, 113.663},
525 {270.748, 113.682})
526 .CubicCurveTo({270.468, 113.755}, {270.169, 113.834},
527 {269.839, 113.926})
528 .CubicCurveTo({269.789, 113.94}, {269.732, 113.957},
529 {269.681, 113.972})
530 .CubicCurveTo({269.391, 114.053}, {269.081, 114.143},
531 {268.756, 114.239})
532 .CubicCurveTo({268.628, 114.276}, {268.5, 114.314},
533 {268.367, 114.354})
534 .CubicCurveTo({268.172, 114.412}, {267.959, 114.478},
535 {267.752, 114.54})
536 .CubicCurveTo({263.349, 115.964}, {258.058, 117.695},
537 {253.564, 119.252})
538 .CubicCurveTo({253.556, 119.255}, {253.547, 119.258},
539 {253.538, 119.261})
540 .CubicCurveTo({251.844, 119.849}, {250.056, 120.474},
541 {248.189, 121.131})
542 .CubicCurveTo({248, 121.197}, {247.812, 121.264}, {247.621, 121.331})
543 .CubicCurveTo({247.079, 121.522}, {246.531, 121.715},
544 {245.975, 121.912})
545 .CubicCurveTo({245.554, 122.06}, {245.126, 122.212},
546 {244.698, 122.364})
547 .CubicCurveTo({244.071, 122.586}, {243.437, 122.811},
548 {242.794, 123.04})
549 .CubicCurveTo({242.189, 123.255}, {241.58, 123.472},
550 {240.961, 123.693})
551 .CubicCurveTo({240.659, 123.801}, {240.357, 123.909},
552 {240.052, 124.018})
553 .CubicCurveTo({239.12, 124.351}, {238.18, 124.687}, {237.22, 125.032})
554 .LineTo({237.164, 125.003})
555 .CubicCurveTo({236.709, 125.184}, {236.262, 125.358},
556 {235.81, 125.538})
557 .CubicCurveTo({235.413, 125.68}, {234.994, 125.832},
558 {234.592, 125.977})
559 .CubicCurveTo({234.592, 125.977}, {234.591, 125.977},
560 {234.59, 125.977})
561 .CubicCurveTo({222.206, 130.435}, {207.708, 135.753},
562 {192.381, 141.429})
563 .CubicCurveTo({162.77, 151.336}, {122.17, 156.894}, {84.1123, 160})
564 .LineTo({360, 160})
565 .LineTo({360, 119.256})
566 .LineTo({360, 106.332})
567 .LineTo({360, 96.6307})
568 .CubicCurveTo({359.978, 96.6317}, {359.956, 96.6326},
569 {359.934, 96.6335})
570 .Close()
571 .MoveTo({337.336, 124.143})
572 .CubicCurveTo({337.274, 122.359}, {338.903, 121.511},
573 {338.903, 121.511})
574 .CubicCurveTo({338.903, 121.511}, {338.96, 123.303},
575 {337.336, 124.143})
576 .Close()
577 .MoveTo({340.082, 121.849})
578 .CubicCurveTo({340.074, 121.917}, {340.062, 121.992},
579 {340.046, 122.075})
580 .CubicCurveTo({340.039, 122.109}, {340.031, 122.142},
581 {340.023, 122.177})
582 .CubicCurveTo({340.005, 122.26}, {339.98, 122.346},
583 {339.952, 122.437})
584 .CubicCurveTo({339.941, 122.473}, {339.931, 122.507},
585 {339.918, 122.544})
586 .CubicCurveTo({339.873, 122.672}, {339.819, 122.804},
587 {339.75, 122.938})
588 .CubicCurveTo({339.747, 122.944}, {339.743, 122.949},
589 {339.74, 122.955})
590 .CubicCurveTo({339.674, 123.08}, {339.593, 123.205},
591 {339.501, 123.328})
592 .CubicCurveTo({339.473, 123.366}, {339.441, 123.401},
593 {339.41, 123.438})
594 .CubicCurveTo({339.332, 123.534}, {339.243, 123.625},
595 {339.145, 123.714})
596 .CubicCurveTo({339.105, 123.75}, {339.068, 123.786},
597 {339.025, 123.821})
598 .CubicCurveTo({338.881, 123.937}, {338.724, 124.048},
599 {338.539, 124.143})
600 .CubicCurveTo({338.532, 123.959}, {338.554, 123.79},
601 {338.58, 123.626})
602 .CubicCurveTo({338.58, 123.625}, {338.58, 123.625}, {338.58, 123.625})
603 .CubicCurveTo({338.607, 123.455}, {338.65, 123.299},
604 {338.704, 123.151})
605 .CubicCurveTo({338.708, 123.14}, {338.71, 123.127},
606 {338.714, 123.117})
607 .CubicCurveTo({338.769, 122.971}, {338.833, 122.838},
608 {338.905, 122.712})
609 .CubicCurveTo({338.911, 122.702}, {338.916, 122.69200000000001},
610 {338.922, 122.682})
611 .CubicCurveTo({338.996, 122.557}, {339.072, 122.444},
612 {339.155, 122.34})
613 .CubicCurveTo({339.161, 122.333}, {339.166, 122.326},
614 {339.172, 122.319})
615 .CubicCurveTo({339.256, 122.215}, {339.339, 122.12},
616 {339.425, 122.037})
617 .CubicCurveTo({339.428, 122.033}, {339.431, 122.03},
618 {339.435, 122.027})
619 .CubicCurveTo({339.785, 121.687}, {340.106, 121.511},
620 {340.106, 121.511})
621 .CubicCurveTo({340.106, 121.511}, {340.107, 121.645},
622 {340.082, 121.849})
623 .Close()
624 .MoveTo({340.678, 113.245})
625 .CubicCurveTo({340.594, 113.488}, {340.356, 113.655},
626 {340.135, 113.775})
627 .CubicCurveTo({339.817, 113.948}, {339.465, 114.059},
628 {339.115, 114.151})
629 .CubicCurveTo({338.251, 114.379}, {337.34, 114.516},
630 {336.448, 114.516})
631 .CubicCurveTo({335.761, 114.516}, {335.072, 114.527},
632 {334.384, 114.513})
633 .CubicCurveTo({334.125, 114.508}, {333.862, 114.462},
634 {333.605, 114.424})
635 .CubicCurveTo({332.865, 114.318}, {332.096, 114.184},
636 {331.41, 113.883})
637 .CubicCurveTo({330.979, 113.695}, {330.442, 113.34},
638 {330.672, 112.813})
639 .CubicCurveTo({331.135, 111.755}, {333.219, 112.946},
640 {334.526, 113.833})
641 .CubicCurveTo({334.54, 113.816}, {334.554, 113.8}, {334.569, 113.784})
642 .CubicCurveTo({333.38, 112.708}, {331.749, 110.985},
643 {332.76, 110.402})
644 .CubicCurveTo({333.769, 109.82}, {334.713, 111.93},
645 {335.228, 113.395})
646 .CubicCurveTo({334.915, 111.889}, {334.59, 109.636},
647 {335.661, 109.592})
648 .CubicCurveTo({336.733, 109.636}, {336.408, 111.889},
649 {336.07, 113.389})
650 .CubicCurveTo({336.609, 111.93}, {337.553, 109.82},
651 {338.563, 110.402})
652 .CubicCurveTo({339.574, 110.984}, {337.942, 112.708},
653 {336.753, 113.784})
654 .CubicCurveTo({336.768, 113.8}, {336.782, 113.816},
655 {336.796, 113.833})
656 .CubicCurveTo({338.104, 112.946}, {340.187, 111.755},
657 {340.65, 112.813})
658 .CubicCurveTo({340.71, 112.95}, {340.728, 113.102},
659 {340.678, 113.245})
660 .Close()
661 .MoveTo({346.357, 106.771})
662 .CubicCurveTo({346.295, 104.987}, {347.924, 104.139},
663 {347.924, 104.139})
664 .CubicCurveTo({347.924, 104.139}, {347.982, 105.931},
665 {346.357, 106.771})
666 .Close()
667 .MoveTo({347.56, 106.771})
668 .CubicCurveTo({347.498, 104.987}, {349.127, 104.139},
669 {349.127, 104.139})
670 .CubicCurveTo({349.127, 104.139}, {349.185, 105.931},
671 {347.56, 106.771})
672 .Close()
673 .TakePath();
674 Entity entity;
675 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
676
677 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
678
679 auto contents = std::make_shared<SolidColorContents>();
680 contents->SetColor(Color::Red());
681 contents->SetGeometry(geom.get());
682
683 entity.SetContents(contents);
684 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
685 }
686
687 TEST_P(EntityTest, SolidColorContentsStrokeSetStrokeCapsAndJoins) {
688 {
689 auto geometry = Geometry::MakeStrokePath(flutter::DlPath{});
690 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
691 // Defaults.
692 ASSERT_EQ(path_geometry->GetStrokeCap(), Cap::kButt);
693 ASSERT_EQ(path_geometry->GetStrokeJoin(), Join::kMiter);
694 }
695
696 {
697 auto geometry = Geometry::MakeStrokePath(flutter::DlPath{}, //
698 {
699 .width = 1.0f,
700 .cap = Cap::kSquare,
701 .miter_limit = 4.0f,
702 });
703 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
704 ASSERT_EQ(path_geometry->GetStrokeCap(), Cap::kSquare);
705 }
706
707 {
708 auto geometry = Geometry::MakeStrokePath(flutter::DlPath{}, //
709 {
710 .width = 1.0f,
711 .cap = Cap::kRound,
712 .miter_limit = 4.0f,
713 });
714 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
715 ASSERT_EQ(path_geometry->GetStrokeCap(), Cap::kRound);
716 }
717 }
718
719 TEST_P(EntityTest, SolidColorContentsStrokeSetMiterLimit) {
720 {
721 auto geometry = Geometry::MakeStrokePath(flutter::DlPath{});
722 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
723 ASSERT_FLOAT_EQ(path_geometry->GetMiterLimit(), 4);
724 }
725
726 {
727 auto geometry = Geometry::MakeStrokePath(flutter::DlPath{}, //
728 {
729 .width = 1.0f,
730 .miter_limit = 8.0f,
731 });
732 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
733 ASSERT_FLOAT_EQ(path_geometry->GetMiterLimit(), 8);
734 }
735
736 {
737 auto geometry = Geometry::MakeStrokePath(flutter::DlPath{}, //
738 {
739 .width = 1.0f,
740 .miter_limit = -1.0f,
741 });
742 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
743 ASSERT_FLOAT_EQ(path_geometry->GetMiterLimit(), 4);
744 }
745 }
746
747 TEST_P(EntityTest, BlendingModeOptions) {
748 std::vector<const char*> blend_mode_names;
749 std::vector<BlendMode> blend_mode_values;
750 {
751 // Force an exhausiveness check with a switch. When adding blend modes,
752 // update this switch with a new name/value to make it selectable in the
753 // test GUI.
754
755 const BlendMode b{};
756 static_assert(b == BlendMode::kClear); // Ensure the first item in
757 // the switch is the first
758 // item in the enum.
759 static_assert(Entity::kLastPipelineBlendMode == BlendMode::kModulate);
760 switch (b) {
761 case BlendMode::kClear:
762 blend_mode_names.push_back("Clear");
763 blend_mode_values.push_back(BlendMode::kClear);
764 case BlendMode::kSrc:
765 blend_mode_names.push_back("Source");
766 blend_mode_values.push_back(BlendMode::kSrc);
767 case BlendMode::kDst:
768 blend_mode_names.push_back("Destination");
769 blend_mode_values.push_back(BlendMode::kDst);
770 case BlendMode::kSrcOver:
771 blend_mode_names.push_back("SourceOver");
772 blend_mode_values.push_back(BlendMode::kSrcOver);
773 case BlendMode::kDstOver:
774 blend_mode_names.push_back("DestinationOver");
775 blend_mode_values.push_back(BlendMode::kDstOver);
776 case BlendMode::kSrcIn:
777 blend_mode_names.push_back("SourceIn");
778 blend_mode_values.push_back(BlendMode::kSrcIn);
779 case BlendMode::kDstIn:
780 blend_mode_names.push_back("DestinationIn");
781 blend_mode_values.push_back(BlendMode::kDstIn);
782 case BlendMode::kSrcOut:
783 blend_mode_names.push_back("SourceOut");
784 blend_mode_values.push_back(BlendMode::kSrcOut);
785 case BlendMode::kDstOut:
786 blend_mode_names.push_back("DestinationOut");
787 blend_mode_values.push_back(BlendMode::kDstOut);
788 case BlendMode::kSrcATop:
789 blend_mode_names.push_back("SourceATop");
790 blend_mode_values.push_back(BlendMode::kSrcATop);
791 case BlendMode::kDstATop:
792 blend_mode_names.push_back("DestinationATop");
793 blend_mode_values.push_back(BlendMode::kDstATop);
794 case BlendMode::kXor:
795 blend_mode_names.push_back("Xor");
796 blend_mode_values.push_back(BlendMode::kXor);
797 case BlendMode::kPlus:
798 blend_mode_names.push_back("Plus");
799 blend_mode_values.push_back(BlendMode::kPlus);
800 case BlendMode::kModulate:
801 blend_mode_names.push_back("Modulate");
802 blend_mode_values.push_back(BlendMode::kModulate);
803 };
804 }
805
806 auto callback = [&](ContentContext& context, RenderPass& pass) {
807 auto world_matrix = Matrix::MakeScale(GetContentScale());
808 auto draw_rect = [&context, &pass, &world_matrix](
809 Rect rect, Color color, BlendMode blend_mode) -> bool {
810 using VS = SolidFillPipeline::VertexShader;
811 using FS = SolidFillPipeline::FragmentShader;
812
813 VertexBufferBuilder<VS::PerVertexData> vtx_builder;
814 {
815 auto r = rect.GetLTRB();
816 vtx_builder.AddVertices({
817 {Point(r[0], r[1])},
818 {Point(r[2], r[1])},
819 {Point(r[2], r[3])},
820 {Point(r[0], r[1])},
821 {Point(r[2], r[3])},
822 {Point(r[0], r[3])},
823 });
824 }
825
826 pass.SetCommandLabel("Blended Rectangle");
827 auto options = OptionsFromPass(pass);
828 options.blend_mode = blend_mode;
829 options.primitive_type = PrimitiveType::kTriangle;
830 pass.SetPipeline(context.GetSolidFillPipeline(options));
831 pass.SetVertexBuffer(
832 vtx_builder.CreateVertexBuffer(context.GetTransientsBuffer()));
833
834 VS::FrameInfo frame_info;
835 frame_info.mvp = pass.GetOrthographicTransform() * world_matrix;
836 VS::BindFrameInfo(
837 pass, context.GetTransientsBuffer().EmplaceUniform(frame_info));
838 FS::FragInfo frag_info;
839 frag_info.color = color.Premultiply();
840 FS::BindFragInfo(
841 pass, context.GetTransientsBuffer().EmplaceUniform(frame_info));
842 return pass.Draw().ok();
843 };
844
845 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
846 static Color color1(1, 0, 0, 0.5), color2(0, 1, 0, 0.5);
847 ImGui::ColorEdit4("Color 1", reinterpret_cast<float*>(&color1));
848 ImGui::ColorEdit4("Color 2", reinterpret_cast<float*>(&color2));
849 static int current_blend_index = 3;
850 ImGui::ListBox("Blending mode", &current_blend_index,
851 blend_mode_names.data(), blend_mode_names.size());
852 ImGui::End();
853
854 BlendMode selected_mode = blend_mode_values[current_blend_index];
855
856 Point a, b, c, d;
857 static PlaygroundPoint point_a(Point(400, 100), 20, Color::White());
858 static PlaygroundPoint point_b(Point(200, 300), 20, Color::White());
859 std::tie(a, b) = DrawPlaygroundLine(point_a, point_b);
860 static PlaygroundPoint point_c(Point(470, 190), 20, Color::White());
861 static PlaygroundPoint point_d(Point(270, 390), 20, Color::White());
862 std::tie(c, d) = DrawPlaygroundLine(point_c, point_d);
863
864 bool result = true;
865 result = result &&
866 draw_rect(Rect::MakeXYWH(0, 0, pass.GetRenderTargetSize().width,
867 pass.GetRenderTargetSize().height),
868 Color(), BlendMode::kClear);
869 result = result && draw_rect(Rect::MakeLTRB(a.x, a.y, b.x, b.y), color1,
870 BlendMode::kSrcOver);
871 result = result && draw_rect(Rect::MakeLTRB(c.x, c.y, d.x, d.y), color2,
872 selected_mode);
873 return result;
874 };
875 ASSERT_TRUE(OpenPlaygroundHere(callback));
876 }
877
878 TEST_P(EntityTest, BezierCircleScaled) {
879 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
880 static float scale = 20;
881
882 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
883 ImGui::SliderFloat("Scale", &scale, 1, 100);
884 ImGui::End();
885
886 Entity entity;
887 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
888 auto path = flutter::DlPathBuilder{}
889 .MoveTo({97.325, 34.818})
890 .CubicCurveTo({98.50862885295136, 34.81812293973836},
891 {99.46822048142015, 33.85863261475589},
892 {99.46822048142015, 32.67499810206613})
893 .CubicCurveTo({99.46822048142015, 31.491363589376355},
894 {98.50862885295136, 30.53187326439389},
895 {97.32499434685802, 30.531998226542708})
896 .CubicCurveTo({96.14153655073771, 30.532123170035373},
897 {95.18222070648729, 31.491540299350355},
898 {95.18222070648729, 32.67499810206613})
899 .CubicCurveTo({95.18222070648729, 33.85845590478189},
900 {96.14153655073771, 34.81787303409686},
901 {97.32499434685802, 34.81799797758954})
902 .Close()
903 .TakePath();
904 entity.SetTransform(
905 Matrix::MakeScale({scale, scale, 1.0}).Translate({-90, -20, 0}));
906
907 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
908
909 auto contents = std::make_shared<SolidColorContents>();
910 contents->SetColor(Color::Red());
911 contents->SetGeometry(geom.get());
912
913 entity.SetContents(contents);
914 return entity.Render(context, pass);
915 };
916 ASSERT_TRUE(OpenPlaygroundHere(callback));
917 }
918
919 TEST_P(EntityTest, Filters) {
920 auto bridge = CreateTextureForFixture("bay_bridge.jpg");
921 auto boston = CreateTextureForFixture("boston.jpg");
922 auto kalimba = CreateTextureForFixture("kalimba.jpg");
923 ASSERT_TRUE(bridge && boston && kalimba);
924
925 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
926 auto fi_bridge = FilterInput::Make(bridge);
927 auto fi_boston = FilterInput::Make(boston);
928 auto fi_kalimba = FilterInput::Make(kalimba);
929
930 std::shared_ptr<FilterContents> blend0 = ColorFilterContents::MakeBlend(
931 BlendMode::kModulate, {fi_kalimba, fi_boston});
932
933 auto blend1 = ColorFilterContents::MakeBlend(
934 BlendMode::kScreen,
935 {FilterInput::Make(blend0), fi_bridge, fi_bridge, fi_bridge});
936
937 Entity entity;
938 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
939 Matrix::MakeTranslation({500, 300}) *
940 Matrix::MakeScale(Vector2{0.5, 0.5}));
941 entity.SetContents(blend1);
942 return entity.Render(context, pass);
943 };
944 ASSERT_TRUE(OpenPlaygroundHere(callback));
945 }
946
947 TEST_P(EntityTest, GaussianBlurFilter) {
948 auto boston =
949 CreateTextureForFixture("boston.jpg", /*enable_mipmapping=*/true);
950 ASSERT_TRUE(boston);
951
952 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
953 const char* input_type_names[] = {"Texture", "Solid Color"};
954 const char* blur_type_names[] = {"Image blur", "Mask blur"};
955 const char* pass_variation_names[] = {"New"};
956 const char* blur_style_names[] = {"Normal", "Solid", "Outer", "Inner"};
957 const char* tile_mode_names[] = {"Clamp", "Repeat", "Mirror", "Decal"};
958 const FilterContents::BlurStyle blur_styles[] = {
959 FilterContents::BlurStyle::kNormal, FilterContents::BlurStyle::kSolid,
960 FilterContents::BlurStyle::kOuter, FilterContents::BlurStyle::kInner};
961 const Entity::TileMode tile_modes[] = {
962 Entity::TileMode::kClamp, Entity::TileMode::kRepeat,
963 Entity::TileMode::kMirror, Entity::TileMode::kDecal};
964
965 // UI state.
966 static int selected_input_type = 0;
967 static Color input_color = Color::Black();
968 static int selected_blur_type = 0;
969 static int selected_pass_variation = 0;
970 static bool combined_sigma = false;
971 static float blur_amount_coarse[2] = {0, 0};
972 static float blur_amount_fine[2] = {10, 10};
973 static int selected_blur_style = 0;
974 static int selected_tile_mode = 3;
975 static Color cover_color(1, 0, 0, 0.2);
976 static Color bounds_color(0, 1, 0, 0.1);
977 static float offset[2] = {500, 400};
978 static float rotation = 0;
979 static float scale[2] = {0.65, 0.65};
980 static float skew[2] = {0, 0};
981 static float path_rect[4] = {0, 0,
982 static_cast<float>(boston->GetSize().width),
983 static_cast<float>(boston->GetSize().height)};
984
985 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
986 {
987 ImGui::Combo("Input type", &selected_input_type, input_type_names,
988 sizeof(input_type_names) / sizeof(char*));
989 if (selected_input_type == 0) {
990 ImGui::SliderFloat("Input opacity", &input_color.alpha, 0, 1);
991 } else {
992 ImGui::ColorEdit4("Input color",
993 reinterpret_cast<float*>(&input_color));
994 }
995 ImGui::Combo("Blur type", &selected_blur_type, blur_type_names,
996 sizeof(blur_type_names) / sizeof(char*));
997 if (selected_blur_type == 0) {
998 ImGui::Combo("Pass variation", &selected_pass_variation,
999 pass_variation_names,
1000 sizeof(pass_variation_names) / sizeof(char*));
1001 }
1002 ImGui::Checkbox("Combined sigma", &combined_sigma);
1003 if (combined_sigma) {
1004 ImGui::SliderFloat("Sigma (coarse)", blur_amount_coarse, 0, 1000);
1005 ImGui::SliderFloat("Sigma (fine)", blur_amount_fine, 0, 10);
1006 blur_amount_coarse[1] = blur_amount_coarse[0];
1007 blur_amount_fine[1] = blur_amount_fine[0];
1008 } else {
1009 ImGui::SliderFloat2("Sigma (coarse)", blur_amount_coarse, 0, 1000);
1010 ImGui::SliderFloat2("Sigma (fine)", blur_amount_fine, 0, 10);
1011 }
1012 ImGui::Combo("Blur style", &selected_blur_style, blur_style_names,
1013 sizeof(blur_style_names) / sizeof(char*));
1014 ImGui::Combo("Tile mode", &selected_tile_mode, tile_mode_names,
1015 sizeof(tile_mode_names) / sizeof(char*));
1016 ImGui::ColorEdit4("Cover color", reinterpret_cast<float*>(&cover_color));
1017 ImGui::ColorEdit4("Bounds color ",
1018 reinterpret_cast<float*>(&bounds_color));
1019 ImGui::SliderFloat2("Translation", offset, 0,
1020 pass.GetRenderTargetSize().width);
1021 ImGui::SliderFloat("Rotation", &rotation, 0, kPi * 2);
1022 ImGui::SliderFloat2("Scale", scale, 0, 3);
1023 ImGui::SliderFloat2("Skew", skew, -3, 3);
1024 ImGui::SliderFloat4("Path XYWH", path_rect, -1000, 1000);
1025 }
1026 ImGui::End();
1027
1028 auto blur_sigma_x = Sigma{blur_amount_coarse[0] + blur_amount_fine[0]};
1029 auto blur_sigma_y = Sigma{blur_amount_coarse[1] + blur_amount_fine[1]};
1030
1031 std::shared_ptr<Contents> input;
1032 Size input_size;
1033
1034 auto input_rect =
1035 Rect::MakeXYWH(path_rect[0], path_rect[1], path_rect[2], path_rect[3]);
1036
1037 std::unique_ptr<Geometry> solid_color_input;
1038 if (selected_input_type == 0) {
1039 auto texture = std::make_shared<TextureContents>();
1040 texture->SetSourceRect(Rect::MakeSize(boston->GetSize()));
1041 texture->SetDestinationRect(input_rect);
1042 texture->SetTexture(boston);
1043 texture->SetOpacity(input_color.alpha);
1044
1045 input = texture;
1046 input_size = input_rect.GetSize();
1047 } else {
1048 auto fill = std::make_shared<SolidColorContents>();
1049 fill->SetColor(input_color);
1050 solid_color_input =
1051 Geometry::MakeFillPath(flutter::DlPath::MakeRect(input_rect));
1052
1053 fill->SetGeometry(solid_color_input.get());
1054
1055 input = fill;
1056 input_size = input_rect.GetSize();
1057 }
1058
1059 std::shared_ptr<FilterContents> blur;
1060 switch (selected_pass_variation) {
1061 case 0:
1062 blur = std::make_shared<GaussianBlurFilterContents>(
1063 blur_sigma_x.sigma, blur_sigma_y.sigma,
1064 tile_modes[selected_tile_mode], blur_styles[selected_blur_style],
1065 /*geometry=*/nullptr);
1066 blur->SetInputs({FilterInput::Make(input)});
1067 break;
1068 case 1:
1069 blur = FilterContents::MakeGaussianBlur(
1070 FilterInput::Make(input), blur_sigma_x, blur_sigma_y,
1071 tile_modes[selected_tile_mode], blur_styles[selected_blur_style]);
1072 break;
1073 };
1074 FML_CHECK(blur);
1075
1076 auto mask_blur = FilterContents::MakeBorderMaskBlur(
1077 FilterInput::Make(input), blur_sigma_x, blur_sigma_y,
1078 blur_styles[selected_blur_style]);
1079
1080 auto ctm = Matrix::MakeScale(GetContentScale()) *
1081 Matrix::MakeTranslation(Vector3(offset[0], offset[1])) *
1082 Matrix::MakeRotationZ(Radians(rotation)) *
1083 Matrix::MakeScale(Vector2(scale[0], scale[1])) *
1084 Matrix::MakeSkew(skew[0], skew[1]) *
1085 Matrix::MakeTranslation(-Point(input_size) / 2);
1086
1087 auto target_contents = selected_blur_type == 0 ? blur : mask_blur;
1088
1089 Entity entity;
1090 entity.SetContents(target_contents);
1091 entity.SetTransform(ctm);
1092
1093 entity.Render(context, pass);
1094
1095 // Renders a red "cover" rectangle that shows the original position of the
1096 // unfiltered input.
1097 Entity cover_entity;
1098 std::unique_ptr<Geometry> geom =
1099 Geometry::MakeFillPath(flutter::DlPath::MakeRect(input_rect));
1100 auto contents = std::make_shared<SolidColorContents>();
1101 contents->SetColor(cover_color);
1102 contents->SetGeometry(geom.get());
1103 cover_entity.SetContents(std::move(contents));
1104 cover_entity.SetTransform(ctm);
1105 cover_entity.Render(context, pass);
1106
1107 // Renders a green bounding rect of the target filter.
1108 Entity bounds_entity;
1109 std::optional<Rect> target_contents_coverage =
1110 target_contents->GetCoverage(entity);
1111 if (target_contents_coverage.has_value()) {
1112 std::unique_ptr<Geometry> geom =
1113 Geometry::MakeFillPath(flutter::DlPath::MakeRect(
1114 target_contents->GetCoverage(entity).value()));
1115 auto contents = std::make_shared<SolidColorContents>();
1116 contents->SetColor(bounds_color);
1117 contents->SetGeometry(geom.get());
1118
1119 bounds_entity.SetContents(contents);
1120 bounds_entity.SetTransform(Matrix());
1121 bounds_entity.Render(context, pass);
1122 }
1123
1124 return true;
1125 };
1126 ASSERT_TRUE(OpenPlaygroundHere(callback));
1127 }
1128
1129 TEST_P(EntityTest, MorphologyFilter) {
1130 auto boston = CreateTextureForFixture("boston.jpg");
1131 ASSERT_TRUE(boston);
1132
1133 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1134 const char* morphology_type_names[] = {"Dilate", "Erode"};
1135 const FilterContents::MorphType morphology_types[] = {
1136 FilterContents::MorphType::kDilate, FilterContents::MorphType::kErode};
1137 static Color input_color = Color::Black();
1138 // UI state.
1139 static int selected_morphology_type = 0;
1140 static float radius[2] = {20, 20};
1141 static Color cover_color(1, 0, 0, 0.2);
1142 static Color bounds_color(0, 1, 0, 0.1);
1143 static float offset[2] = {500, 400};
1144 static float rotation = 0;
1145 static float scale[2] = {0.65, 0.65};
1146 static float skew[2] = {0, 0};
1147 static float path_rect[4] = {0, 0,
1148 static_cast<float>(boston->GetSize().width),
1149 static_cast<float>(boston->GetSize().height)};
1150 static float effect_transform_scale = 1;
1151
1152 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
1153 {
1154 ImGui::Combo("Morphology type", &selected_morphology_type,
1155 morphology_type_names,
1156 sizeof(morphology_type_names) / sizeof(char*));
1157 ImGui::SliderFloat2("Radius", radius, 0, 200);
1158 ImGui::SliderFloat("Input opacity", &input_color.alpha, 0, 1);
1159 ImGui::ColorEdit4("Cover color", reinterpret_cast<float*>(&cover_color));
1160 ImGui::ColorEdit4("Bounds color ",
1161 reinterpret_cast<float*>(&bounds_color));
1162 ImGui::SliderFloat2("Translation", offset, 0,
1163 pass.GetRenderTargetSize().width);
1164 ImGui::SliderFloat("Rotation", &rotation, 0, kPi * 2);
1165 ImGui::SliderFloat2("Scale", scale, 0, 3);
1166 ImGui::SliderFloat2("Skew", skew, -3, 3);
1167 ImGui::SliderFloat4("Path XYWH", path_rect, -1000, 1000);
1168 ImGui::SliderFloat("Effect transform scale", &effect_transform_scale, 0,
1169 3);
1170 }
1171 ImGui::End();
1172
1173 std::shared_ptr<Contents> input;
1174 Size input_size;
1175
1176 auto input_rect =
1177 Rect::MakeXYWH(path_rect[0], path_rect[1], path_rect[2], path_rect[3]);
1178 auto texture = std::make_shared<TextureContents>();
1179 texture->SetSourceRect(Rect::MakeSize(boston->GetSize()));
1180 texture->SetDestinationRect(input_rect);
1181 texture->SetTexture(boston);
1182 texture->SetOpacity(input_color.alpha);
1183
1184 input = texture;
1185 input_size = input_rect.GetSize();
1186
1187 auto contents = FilterContents::MakeMorphology(
1188 FilterInput::Make(input), Radius{radius[0]}, Radius{radius[1]},
1189 morphology_types[selected_morphology_type]);
1190 contents->SetEffectTransform(Matrix::MakeScale(
1191 Vector2{effect_transform_scale, effect_transform_scale}));
1192
1193 auto ctm = Matrix::MakeScale(GetContentScale()) *
1194 Matrix::MakeTranslation(Vector3(offset[0], offset[1])) *
1195 Matrix::MakeRotationZ(Radians(rotation)) *
1196 Matrix::MakeScale(Vector2(scale[0], scale[1])) *
1197 Matrix::MakeSkew(skew[0], skew[1]) *
1198 Matrix::MakeTranslation(-Point(input_size) / 2);
1199
1200 Entity entity;
1201 entity.SetContents(contents);
1202 entity.SetTransform(ctm);
1203
1204 entity.Render(context, pass);
1205
1206 // Renders a red "cover" rectangle that shows the original position of the
1207 // unfiltered input.
1208 Entity cover_entity;
1209 std::unique_ptr<Geometry> geom =
1210 Geometry::MakeFillPath(flutter::DlPath::MakeRect(input_rect));
1211 auto cover_contents = std::make_shared<SolidColorContents>();
1212 cover_contents->SetColor(cover_color);
1213 cover_contents->SetGeometry(geom.get());
1214 cover_entity.SetContents(cover_contents);
1215 cover_entity.SetTransform(ctm);
1216 cover_entity.Render(context, pass);
1217
1218 // Renders a green bounding rect of the target filter.
1219 Entity bounds_entity;
1220 std::unique_ptr<Geometry> bounds_geom = Geometry::MakeFillPath(
1221 flutter::DlPath::MakeRect(contents->GetCoverage(entity).value()));
1222 auto bounds_contents = std::make_shared<SolidColorContents>();
1223 bounds_contents->SetColor(bounds_color);
1224 bounds_contents->SetGeometry(bounds_geom.get());
1225 bounds_entity.SetContents(std::move(bounds_contents));
1226 bounds_entity.SetTransform(Matrix());
1227
1228 bounds_entity.Render(context, pass);
1229
1230 return true;
1231 };
1232 ASSERT_TRUE(OpenPlaygroundHere(callback));
1233 }
1234
1235 TEST_P(EntityTest, SetBlendMode) {
1236 Entity entity;
1237 ASSERT_EQ(entity.GetBlendMode(), BlendMode::kSrcOver);
1238 entity.SetBlendMode(BlendMode::kClear);
1239 ASSERT_EQ(entity.GetBlendMode(), BlendMode::kClear);
1240 }
1241
1242 TEST_P(EntityTest, ContentsGetBoundsForEmptyPathReturnsNullopt) {
1243 Entity entity;
1244 entity.SetContents(std::make_shared<SolidColorContents>());
1245 ASSERT_FALSE(entity.GetCoverage().has_value());
1246 }
1247
1248 TEST_P(EntityTest, SolidStrokeCoverageIsCorrect) {
1249 {
1250 auto geometry = Geometry::MakeStrokePath(
1251 flutter::DlPath::MakeLine({0, 0}, {10, 10}), //
1252 {
1253 .width = 4.0f,
1254 .cap = Cap::kButt,
1255 .join = Join::kBevel,
1256 .miter_limit = 4.0f,
1257 });
1258
1259 Entity entity;
1260 auto contents = std::make_unique<SolidColorContents>();
1261 contents->SetGeometry(geometry.get());
1262 contents->SetColor(Color::Black());
1263 entity.SetContents(std::move(contents));
1264 auto actual = entity.GetCoverage();
1265 auto expected = Rect::MakeLTRB(-2, -2, 12, 12);
1266
1267 ASSERT_TRUE(actual.has_value());
1268 ASSERT_RECT_NEAR(actual.value(), expected);
1269 }
1270
1271 // Cover the Cap::kSquare case.
1272 {
1273 auto geometry = Geometry::MakeStrokePath(
1274 flutter::DlPath::MakeLine({0, 0}, {10, 10}), //
1275 {
1276 .width = 4.0,
1277 .cap = Cap::kSquare,
1278 .join = Join::kBevel,
1279 .miter_limit = 4.0,
1280 });
1281
1282 Entity entity;
1283 auto contents = std::make_unique<SolidColorContents>();
1284 contents->SetGeometry(geometry.get());
1285 contents->SetColor(Color::Black());
1286 entity.SetContents(std::move(contents));
1287 auto actual = entity.GetCoverage();
1288 auto expected =
1289 Rect::MakeLTRB(-sqrt(8), -sqrt(8), 10 + sqrt(8), 10 + sqrt(8));
1290
1291 ASSERT_TRUE(actual.has_value());
1292 ASSERT_RECT_NEAR(actual.value(), expected);
1293 }
1294
1295 // Cover the Join::kMiter case.
1296 {
1297 auto geometry = Geometry::MakeStrokePath(
1298 flutter::DlPath::MakeLine({0, 0}, {10, 10}), //
1299 {
1300 .width = 4.0f,
1301 .cap = Cap::kSquare,
1302 .join = Join::kMiter,
1303 .miter_limit = 2.0f,
1304 });
1305
1306 Entity entity;
1307 auto contents = std::make_unique<SolidColorContents>();
1308 contents->SetGeometry(geometry.get());
1309 contents->SetColor(Color::Black());
1310 entity.SetContents(std::move(contents));
1311 auto actual = entity.GetCoverage();
1312 auto expected = Rect::MakeLTRB(-4, -4, 14, 14);
1313
1314 ASSERT_TRUE(actual.has_value());
1315 ASSERT_RECT_NEAR(actual.value(), expected);
1316 }
1317 }
1318
1319 TEST_P(EntityTest, BorderMaskBlurCoverageIsCorrect) {
1320 auto fill = std::make_shared<SolidColorContents>();
1321 auto geom = Geometry::MakeFillPath(
1322 flutter::DlPath::MakeRect(Rect::MakeXYWH(0, 0, 300, 400)));
1323 fill->SetGeometry(geom.get());
1324 fill->SetColor(Color::CornflowerBlue());
1325 auto border_mask_blur = FilterContents::MakeBorderMaskBlur(
1326 FilterInput::Make(fill), Radius{3}, Radius{4});
1327
1328 {
1329 Entity e;
1330 e.SetTransform(Matrix());
1331 auto actual = border_mask_blur->GetCoverage(e);
1332 auto expected = Rect::MakeXYWH(-3, -4, 306, 408);
1333 ASSERT_TRUE(actual.has_value());
1334 ASSERT_RECT_NEAR(actual.value(), expected);
1335 }
1336
1337 {
1338 Entity e;
1339 e.SetTransform(Matrix::MakeRotationZ(Radians{kPi / 4}));
1340 auto actual = border_mask_blur->GetCoverage(e);
1341 auto expected = Rect::MakeXYWH(-287.792, -4.94975, 504.874, 504.874);
1342 ASSERT_TRUE(actual.has_value());
1343 ASSERT_RECT_NEAR(actual.value(), expected);
1344 }
1345 }
1346
1347 TEST_P(EntityTest, SolidFillCoverageIsCorrect) {
1348 // No transform
1349 {
1350 auto fill = std::make_shared<SolidColorContents>();
1351 fill->SetColor(Color::CornflowerBlue());
1352 auto expected = Rect::MakeLTRB(100, 110, 200, 220);
1353 auto geom = Geometry::MakeFillPath(flutter::DlPath::MakeRect(expected));
1354 fill->SetGeometry(geom.get());
1355
1356 auto coverage = fill->GetCoverage({});
1357 ASSERT_TRUE(coverage.has_value());
1358 ASSERT_RECT_NEAR(coverage.value(), expected);
1359 }
1360
1361 // Entity transform
1362 {
1363 auto fill = std::make_shared<SolidColorContents>();
1364 auto geom = Geometry::MakeFillPath(
1365 flutter::DlPath::MakeRect(Rect::MakeLTRB(100, 110, 200, 220)));
1366 fill->SetColor(Color::CornflowerBlue());
1367 fill->SetGeometry(geom.get());
1368
1369 Entity entity;
1370 entity.SetTransform(Matrix::MakeTranslation(Vector2(4, 5)));
1371 entity.SetContents(std::move(fill));
1372
1373 auto coverage = entity.GetCoverage();
1374 auto expected = Rect::MakeLTRB(104, 115, 204, 225);
1375 ASSERT_TRUE(coverage.has_value());
1376 ASSERT_RECT_NEAR(coverage.value(), expected);
1377 }
1378
1379 // No coverage for fully transparent colors
1380 {
1381 auto fill = std::make_shared<SolidColorContents>();
1382 auto geom = Geometry::MakeFillPath(
1383 flutter::DlPath::MakeRect(Rect::MakeLTRB(100, 110, 200, 220)));
1384 fill->SetColor(Color::WhiteTransparent());
1385 fill->SetGeometry(geom.get());
1386
1387 auto coverage = fill->GetCoverage({});
1388 ASSERT_FALSE(coverage.has_value());
1389 }
1390 }
1391
1392 TEST_P(EntityTest, RRectShadowTest) {
1393 auto callback = [&](ContentContext& context, RenderPass& pass) {
1394 static Color color = Color::Red();
1395 static float corner_radius = 100;
1396 static float blur_radius = 100;
1397 static bool show_coverage = false;
1398 static Color coverage_color = Color::Green().WithAlpha(0.2);
1399 static PlaygroundPoint top_left_point(Point(200, 200), 30, Color::White());
1400 static PlaygroundPoint bottom_right_point(Point(600, 400), 30,
1401 Color::White());
1402
1403 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
1404 ImGui::SliderFloat("Corner radius", &corner_radius, 0, 300);
1405 ImGui::SliderFloat("Blur radius", &blur_radius, 0, 300);
1406 ImGui::ColorEdit4("Color", reinterpret_cast<Scalar*>(&color));
1407 ImGui::Checkbox("Show coverage", &show_coverage);
1408 if (show_coverage) {
1409 ImGui::ColorEdit4("Coverage color",
1410 reinterpret_cast<Scalar*>(&coverage_color));
1411 }
1412 ImGui::End();
1413
1414 auto [top_left, bottom_right] =
1415 DrawPlaygroundLine(top_left_point, bottom_right_point);
1416 auto rect =
1417 Rect::MakeLTRB(top_left.x, top_left.y, bottom_right.x, bottom_right.y);
1418
1419 auto contents = std::make_unique<SolidRRectBlurContents>();
1420 contents->SetShape(rect, corner_radius);
1421 contents->SetColor(color);
1422 contents->SetSigma(Radius(blur_radius));
1423
1424 Entity entity;
1425 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
1426 entity.SetContents(std::move(contents));
1427 entity.Render(context, pass);
1428
1429 auto coverage = entity.GetCoverage();
1430 if (show_coverage && coverage.has_value()) {
1431 auto bounds_contents = std::make_unique<SolidColorContents>();
1432 auto geom = Geometry::MakeFillPath(
1433 flutter::DlPath::MakeRect(entity.GetCoverage().value()));
1434 bounds_contents->SetGeometry(geom.get());
1435 bounds_contents->SetColor(coverage_color.Premultiply());
1436 Entity bounds_entity;
1437 bounds_entity.SetContents(std::move(bounds_contents));
1438 bounds_entity.Render(context, pass);
1439 }
1440
1441 return true;
1442 };
1443 ASSERT_TRUE(OpenPlaygroundHere(callback));
1444 }
1445
1446 TEST_P(EntityTest, ColorMatrixFilterCoverageIsCorrect) {
1447 // Set up a simple color background.
1448 auto fill = std::make_shared<SolidColorContents>();
1449 auto geom = Geometry::MakeFillPath(
1450 flutter::DlPath::MakeRect(Rect::MakeXYWH(0, 0, 300, 400)));
1451 fill->SetGeometry(geom.get());
1452 fill->SetColor(Color::Coral());
1453
1454 // Set the color matrix filter.
1455 ColorMatrix matrix = {
1456 1, 1, 1, 1, 1, //
1457 1, 1, 1, 1, 1, //
1458 1, 1, 1, 1, 1, //
1459 1, 1, 1, 1, 1, //
1460 };
1461
1462 auto filter =
1463 ColorFilterContents::MakeColorMatrix(FilterInput::Make(fill), matrix);
1464
1465 Entity e;
1466 e.SetTransform(Matrix());
1467
1468 // Confirm that the actual filter coverage matches the expected coverage.
1469 auto actual = filter->GetCoverage(e);
1470 auto expected = Rect::MakeXYWH(0, 0, 300, 400);
1471
1472 ASSERT_TRUE(actual.has_value());
1473 ASSERT_RECT_NEAR(actual.value(), expected);
1474 }
1475
1476 TEST_P(EntityTest, ColorMatrixFilterEditable) {
1477 auto bay_bridge = CreateTextureForFixture("bay_bridge.jpg");
1478 ASSERT_TRUE(bay_bridge);
1479
1480 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1481 // UI state.
1482 static ColorMatrix color_matrix = {
1483 1, 0, 0, 0, 0, //
1484 0, 3, 0, 0, 0, //
1485 0, 0, 1, 0, 0, //
1486 0, 0, 0, 1, 0, //
1487 };
1488 static float offset[2] = {500, 400};
1489 static float rotation = 0;
1490 static float scale[2] = {0.65, 0.65};
1491 static float skew[2] = {0, 0};
1492
1493 // Define the ImGui
1494 ImGui::Begin("Color Matrix", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
1495 {
1496 std::string label = "##1";
1497 for (int i = 0; i < 20; i += 5) {
1498 ImGui::InputScalarN(label.c_str(), ImGuiDataType_Float,
1499 &(color_matrix.array[i]), 5, nullptr, nullptr,
1500 "%.2f", 0);
1501 label[2]++;
1502 }
1503
1504 ImGui::SliderFloat2("Translation", &offset[0], 0,
1505 pass.GetRenderTargetSize().width);
1506 ImGui::SliderFloat("Rotation", &rotation, 0, kPi * 2);
1507 ImGui::SliderFloat2("Scale", &scale[0], 0, 3);
1508 ImGui::SliderFloat2("Skew", &skew[0], -3, 3);
1509 }
1510 ImGui::End();
1511
1512 // Set the color matrix filter.
1513 auto filter = ColorFilterContents::MakeColorMatrix(
1514 FilterInput::Make(bay_bridge), color_matrix);
1515
1516 // Define the entity with the color matrix filter.
1517 Entity entity;
1518 entity.SetTransform(
1519 Matrix::MakeScale(GetContentScale()) *
1520 Matrix::MakeTranslation(Vector3(offset[0], offset[1])) *
1521 Matrix::MakeRotationZ(Radians(rotation)) *
1522 Matrix::MakeScale(Vector2(scale[0], scale[1])) *
1523 Matrix::MakeSkew(skew[0], skew[1]) *
1524 Matrix::MakeTranslation(-Point(bay_bridge->GetSize()) / 2));
1525 entity.SetContents(filter);
1526 entity.Render(context, pass);
1527
1528 return true;
1529 };
1530
1531 ASSERT_TRUE(OpenPlaygroundHere(callback));
1532 }
1533
1534 TEST_P(EntityTest, LinearToSrgbFilterCoverageIsCorrect) {
1535 // Set up a simple color background.
1536 auto geom = Geometry::MakeFillPath(
1537 flutter::DlPath::MakeRect(Rect::MakeXYWH(0, 0, 300, 400)));
1538 auto fill = std::make_shared<SolidColorContents>();
1539 fill->SetGeometry(geom.get());
1540 fill->SetColor(Color::MintCream());
1541
1542 auto filter =
1543 ColorFilterContents::MakeLinearToSrgbFilter(FilterInput::Make(fill));
1544
1545 Entity e;
1546 e.SetTransform(Matrix());
1547
1548 // Confirm that the actual filter coverage matches the expected coverage.
1549 auto actual = filter->GetCoverage(e);
1550 auto expected = Rect::MakeXYWH(0, 0, 300, 400);
1551
1552 ASSERT_TRUE(actual.has_value());
1553 ASSERT_RECT_NEAR(actual.value(), expected);
1554 }
1555
1556 TEST_P(EntityTest, LinearToSrgbFilter) {
1557 auto image = CreateTextureForFixture("kalimba.jpg");
1558 ASSERT_TRUE(image);
1559
1560 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1561 auto filtered =
1562 ColorFilterContents::MakeLinearToSrgbFilter(FilterInput::Make(image));
1563
1564 // Define the entity that will serve as the control image as a Gaussian blur
1565 // filter with no filter at all.
1566 Entity entity_left;
1567 entity_left.SetTransform(Matrix::MakeScale(GetContentScale()) *
1568 Matrix::MakeTranslation({100, 300}) *
1569 Matrix::MakeScale(Vector2{0.5, 0.5}));
1570 auto unfiltered = FilterContents::MakeGaussianBlur(FilterInput::Make(image),
1571 Sigma{0}, Sigma{0});
1572 entity_left.SetContents(unfiltered);
1573
1574 // Define the entity that will be filtered from linear to sRGB.
1575 Entity entity_right;
1576 entity_right.SetTransform(Matrix::MakeScale(GetContentScale()) *
1577 Matrix::MakeTranslation({500, 300}) *
1578 Matrix::MakeScale(Vector2{0.5, 0.5}));
1579 entity_right.SetContents(filtered);
1580 return entity_left.Render(context, pass) &&
1581 entity_right.Render(context, pass);
1582 };
1583
1584 ASSERT_TRUE(OpenPlaygroundHere(callback));
1585 }
1586
1587 TEST_P(EntityTest, SrgbToLinearFilterCoverageIsCorrect) {
1588 // Set up a simple color background.
1589 auto fill = std::make_shared<SolidColorContents>();
1590 auto geom = Geometry::MakeFillPath(
1591 flutter::DlPath::MakeRect(Rect::MakeXYWH(0, 0, 300, 400)));
1592 fill->SetGeometry(geom.get());
1593 fill->SetColor(Color::DeepPink());
1594
1595 auto filter =
1596 ColorFilterContents::MakeSrgbToLinearFilter(FilterInput::Make(fill));
1597
1598 Entity e;
1599 e.SetTransform(Matrix());
1600
1601 // Confirm that the actual filter coverage matches the expected coverage.
1602 auto actual = filter->GetCoverage(e);
1603 auto expected = Rect::MakeXYWH(0, 0, 300, 400);
1604
1605 ASSERT_TRUE(actual.has_value());
1606 ASSERT_RECT_NEAR(actual.value(), expected);
1607 }
1608
1609 TEST_P(EntityTest, SrgbToLinearFilter) {
1610 auto image = CreateTextureForFixture("embarcadero.jpg");
1611 ASSERT_TRUE(image);
1612
1613 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1614 auto filtered =
1615 ColorFilterContents::MakeSrgbToLinearFilter(FilterInput::Make(image));
1616
1617 // Define the entity that will serve as the control image as a Gaussian blur
1618 // filter with no filter at all.
1619 Entity entity_left;
1620 entity_left.SetTransform(Matrix::MakeScale(GetContentScale()) *
1621 Matrix::MakeTranslation({100, 300}) *
1622 Matrix::MakeScale(Vector2{0.5, 0.5}));
1623 auto unfiltered = FilterContents::MakeGaussianBlur(FilterInput::Make(image),
1624 Sigma{0}, Sigma{0});
1625 entity_left.SetContents(unfiltered);
1626
1627 // Define the entity that will be filtered from sRGB to linear.
1628 Entity entity_right;
1629 entity_right.SetTransform(Matrix::MakeScale(GetContentScale()) *
1630 Matrix::MakeTranslation({500, 300}) *
1631 Matrix::MakeScale(Vector2{0.5, 0.5}));
1632 entity_right.SetContents(filtered);
1633 return entity_left.Render(context, pass) &&
1634 entity_right.Render(context, pass);
1635 };
1636
1637 ASSERT_TRUE(OpenPlaygroundHere(callback));
1638 }
1639
1640 static Vector3 RGBToYUV(Vector3 rgb, YUVColorSpace yuv_color_space) {
1641 Vector3 yuv;
1642 switch (yuv_color_space) {
1643 case YUVColorSpace::kBT601FullRange:
1644 yuv.x = rgb.x * 0.299 + rgb.y * 0.587 + rgb.z * 0.114;
1645 yuv.y = rgb.x * -0.169 + rgb.y * -0.331 + rgb.z * 0.5 + 0.5;
1646 yuv.z = rgb.x * 0.5 + rgb.y * -0.419 + rgb.z * -0.081 + 0.5;
1647 break;
1648 case YUVColorSpace::kBT601LimitedRange:
1649 yuv.x = rgb.x * 0.257 + rgb.y * 0.516 + rgb.z * 0.100 + 0.063;
1650 yuv.y = rgb.x * -0.145 + rgb.y * -0.291 + rgb.z * 0.439 + 0.5;
1651 yuv.z = rgb.x * 0.429 + rgb.y * -0.368 + rgb.z * -0.071 + 0.5;
1652 break;
1653 }
1654 return yuv;
1655 }
1656
1657 static std::vector<std::shared_ptr<Texture>> CreateTestYUVTextures(
1658 Context* context,
1659 YUVColorSpace yuv_color_space) {
1660 Vector3 red = {244.0 / 255.0, 67.0 / 255.0, 54.0 / 255.0};
1661 Vector3 green = {76.0 / 255.0, 175.0 / 255.0, 80.0 / 255.0};
1662 Vector3 blue = {33.0 / 255.0, 150.0 / 255.0, 243.0 / 255.0};
1663 Vector3 white = {1.0, 1.0, 1.0};
1664 Vector3 red_yuv = RGBToYUV(red, yuv_color_space);
1665 Vector3 green_yuv = RGBToYUV(green, yuv_color_space);
1666 Vector3 blue_yuv = RGBToYUV(blue, yuv_color_space);
1667 Vector3 white_yuv = RGBToYUV(white, yuv_color_space);
1668 std::vector<Vector3> yuvs{red_yuv, green_yuv, blue_yuv, white_yuv};
1669 std::vector<uint8_t> y_data;
1670 std::vector<uint8_t> uv_data;
1671 for (int i = 0; i < 4; i++) {
1672 auto yuv = yuvs[i];
1673 uint8_t y = std::round(yuv.x * 255.0);
1674 uint8_t u = std::round(yuv.y * 255.0);
1675 uint8_t v = std::round(yuv.z * 255.0);
1676 for (int j = 0; j < 16; j++) {
1677 y_data.push_back(y);
1678 }
1679 for (int j = 0; j < 8; j++) {
1680 uv_data.push_back(j % 2 == 0 ? u : v);
1681 }
1682 }
1683 auto cmd_buffer = context->CreateCommandBuffer();
1684 auto blit_pass = cmd_buffer->CreateBlitPass();
1685
1686 impeller::TextureDescriptor y_texture_descriptor;
1687 y_texture_descriptor.storage_mode = impeller::StorageMode::kHostVisible;
1688 y_texture_descriptor.format = PixelFormat::kR8UNormInt;
1689 y_texture_descriptor.size = {8, 8};
1690 auto y_texture =
1691 context->GetResourceAllocator()->CreateTexture(y_texture_descriptor);
1692 auto y_mapping = std::make_shared<fml::DataMapping>(y_data);
1693 auto y_mapping_buffer =
1694 context->GetResourceAllocator()->CreateBufferWithCopy(*y_mapping);
1695
1696 blit_pass->AddCopy(DeviceBuffer::AsBufferView(y_mapping_buffer), y_texture);
1697
1698 impeller::TextureDescriptor uv_texture_descriptor;
1699 uv_texture_descriptor.storage_mode = impeller::StorageMode::kHostVisible;
1700 uv_texture_descriptor.format = PixelFormat::kR8G8UNormInt;
1701 uv_texture_descriptor.size = {4, 4};
1702 auto uv_texture =
1703 context->GetResourceAllocator()->CreateTexture(uv_texture_descriptor);
1704 auto uv_mapping = std::make_shared<fml::DataMapping>(uv_data);
1705 auto uv_mapping_buffer =
1706 context->GetResourceAllocator()->CreateBufferWithCopy(*uv_mapping);
1707
1708 blit_pass->AddCopy(DeviceBuffer::AsBufferView(uv_mapping_buffer), uv_texture);
1709
1710 if (!blit_pass->EncodeCommands() ||
1711 !context->GetCommandQueue()->Submit({cmd_buffer}).ok()) {
1712 FML_DLOG(ERROR) << "Could not copy contents into Y/UV texture.";
1713 }
1714
1715 return {y_texture, uv_texture};
1716 }
1717
1718 TEST_P(EntityTest, YUVToRGBFilter) {
1719 if (GetParam() == PlaygroundBackend::kOpenGLES) {
1720 // TODO(114588) : Support YUV to RGB filter on OpenGLES backend.
1721 GTEST_SKIP()
1722 << "YUV to RGB filter is not supported on OpenGLES backend yet.";
1723 }
1724
1725 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1726 YUVColorSpace yuv_color_space_array[2]{YUVColorSpace::kBT601FullRange,
1727 YUVColorSpace::kBT601LimitedRange};
1728 for (int i = 0; i < 2; i++) {
1729 auto yuv_color_space = yuv_color_space_array[i];
1730 auto textures =
1731 CreateTestYUVTextures(GetContext().get(), yuv_color_space);
1732 auto filter_contents = FilterContents::MakeYUVToRGBFilter(
1733 textures[0], textures[1], yuv_color_space);
1734 Entity filter_entity;
1735 filter_entity.SetContents(filter_contents);
1736 auto snapshot = filter_contents->RenderToSnapshot(context, filter_entity);
1737
1738 Entity entity;
1739 auto contents = TextureContents::MakeRect(Rect::MakeLTRB(0, 0, 256, 256));
1740 contents->SetTexture(snapshot->texture);
1741 contents->SetSourceRect(Rect::MakeSize(snapshot->texture->GetSize()));
1742 entity.SetContents(contents);
1743 entity.SetTransform(
1744 Matrix::MakeTranslation({static_cast<Scalar>(100 + 400 * i), 300}));
1745 entity.Render(context, pass);
1746 }
1747 return true;
1748 };
1749 ASSERT_TRUE(OpenPlaygroundHere(callback));
1750 }
1751
1752 TEST_P(EntityTest, RuntimeEffect) {
1753 auto runtime_stages =
1754 OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1755 auto runtime_stage =
1756 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1757 ASSERT_TRUE(runtime_stage);
1758 ASSERT_TRUE(runtime_stage->IsDirty());
1759
1760 bool expect_dirty = true;
1761
1762 PipelineRef first_pipeline;
1763 std::unique_ptr<Geometry> geom = Geometry::MakeCover();
1764
1765 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1766 EXPECT_EQ(runtime_stage->IsDirty(), expect_dirty);
1767
1768 auto contents = std::make_shared<RuntimeEffectContents>();
1769 contents->SetGeometry(geom.get());
1770 contents->SetRuntimeStage(runtime_stage);
1771
1772 struct FragUniforms {
1773 Vector2 iResolution;
1774 Scalar iTime;
1775 } frag_uniforms = {
1776 .iResolution = Vector2(GetWindowSize().width, GetWindowSize().height),
1777 .iTime = static_cast<Scalar>(GetSecondsElapsed()),
1778 };
1779 auto uniform_data = std::make_shared<std::vector<uint8_t>>();
1780 uniform_data->resize(sizeof(FragUniforms));
1781 memcpy(uniform_data->data(), &frag_uniforms, sizeof(FragUniforms));
1782 contents->SetUniformData(uniform_data);
1783
1784 Entity entity;
1785 entity.SetContents(contents);
1786 bool result = contents->Render(context, entity, pass);
1787
1788 if (expect_dirty) {
1789 first_pipeline = pass.GetCommands().back().pipeline;
1790 } else {
1791 EXPECT_EQ(pass.GetCommands().back().pipeline, first_pipeline);
1792 }
1793 expect_dirty = false;
1794 return result;
1795 };
1796
1797 // Simulate some renders and hot reloading of the shader.
1798 auto content_context = GetContentContext();
1799 {
1800 RenderTarget target =
1801 content_context->GetRenderTargetCache()->CreateOffscreen(
1802 *content_context->GetContext(), {1, 1}, 1u);
1803
1804 testing::MockRenderPass mock_pass(GetContext(), target);
1805 callback(*content_context, mock_pass);
1806 callback(*content_context, mock_pass);
1807
1808 // Dirty the runtime stage.
1809 runtime_stages = OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1810 runtime_stage =
1811 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1812
1813 ASSERT_TRUE(runtime_stage->IsDirty());
1814 expect_dirty = true;
1815
1816 callback(*content_context, mock_pass);
1817 }
1818 }
1819
1820 TEST_P(EntityTest, RuntimeEffectCanSuccessfullyRender) {
1821 auto runtime_stages =
1822 OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1823 auto runtime_stage =
1824 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1825 ASSERT_TRUE(runtime_stage);
1826 ASSERT_TRUE(runtime_stage->IsDirty());
1827
1828 auto contents = std::make_shared<RuntimeEffectContents>();
1829 auto geom = Geometry::MakeCover();
1830 contents->SetGeometry(geom.get());
1831 contents->SetRuntimeStage(runtime_stage);
1832
1833 struct FragUniforms {
1834 Vector2 iResolution;
1835 Scalar iTime;
1836 } frag_uniforms = {
1837 .iResolution = Vector2(GetWindowSize().width, GetWindowSize().height),
1838 .iTime = static_cast<Scalar>(GetSecondsElapsed()),
1839 };
1840 auto uniform_data = std::make_shared<std::vector<uint8_t>>();
1841 uniform_data->resize(sizeof(FragUniforms));
1842 memcpy(uniform_data->data(), &frag_uniforms, sizeof(FragUniforms));
1843 contents->SetUniformData(uniform_data);
1844
1845 Entity entity;
1846 entity.SetContents(contents);
1847
1848 // Create a render target with a depth-stencil, similar to how EntityPass
1849 // does.
1850 RenderTarget target =
1851 GetContentContext()->GetRenderTargetCache()->CreateOffscreenMSAA(
1852 *GetContext(), {GetWindowSize().width, GetWindowSize().height}, 1,
1853 "RuntimeEffect Texture");
1854 testing::MockRenderPass pass(GetContext(), target);
1855
1856 ASSERT_TRUE(contents->Render(*GetContentContext(), entity, pass));
1857 ASSERT_EQ(pass.GetCommands().size(), 1u);
1858 const auto& command = pass.GetCommands()[0];
1859 ASSERT_TRUE(command.pipeline->GetDescriptor()
1860 .GetDepthStencilAttachmentDescriptor()
1861 .has_value());
1862 ASSERT_TRUE(command.pipeline->GetDescriptor()
1863 .GetFrontStencilAttachmentDescriptor()
1864 .has_value());
1865 }
1866
1867 TEST_P(EntityTest, RuntimeEffectCanPrecache) {
1868 auto runtime_stages =
1869 OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1870 auto runtime_stage =
1871 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1872 ASSERT_TRUE(runtime_stage);
1873 ASSERT_TRUE(runtime_stage->IsDirty());
1874
1875 auto contents = std::make_shared<RuntimeEffectContents>();
1876 contents->SetRuntimeStage(runtime_stage);
1877
1878 EXPECT_TRUE(contents->BootstrapShader(*GetContentContext()));
1879 }
1880
1881 TEST_P(EntityTest, RuntimeEffectSetsRightSizeWhenUniformIsStruct) {
1882 if (GetBackend() != PlaygroundBackend::kVulkan) {
1883 GTEST_SKIP() << "Test only applies to Vulkan";
1884 }
1885
1886 auto runtime_stages =
1887 OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1888 auto runtime_stage =
1889 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1890 ASSERT_TRUE(runtime_stage);
1891 ASSERT_TRUE(runtime_stage->IsDirty());
1892
1893 auto contents = std::make_shared<RuntimeEffectContents>();
1894 auto geom = Geometry::MakeCover();
1895 contents->SetGeometry(geom.get());
1896 contents->SetRuntimeStage(runtime_stage);
1897
1898 struct FragUniforms {
1899 Vector2 iResolution;
1900 Scalar iTime;
1901 } frag_uniforms = {
1902 .iResolution = Vector2(GetWindowSize().width, GetWindowSize().height),
1903 .iTime = static_cast<Scalar>(GetSecondsElapsed()),
1904 };
1905 auto uniform_data = std::make_shared<std::vector<uint8_t>>();
1906 uniform_data->resize(sizeof(FragUniforms));
1907 memcpy(uniform_data->data(), &frag_uniforms, sizeof(FragUniforms));
1908
1909 auto buffer_view = RuntimeEffectContents::EmplaceVulkanUniform(
1910 uniform_data, GetContentContext()->GetTransientsBuffer(),
1911 runtime_stage->GetUniforms()[0],
1912 GetContentContext()->GetTransientsBuffer().GetMinimumUniformAlignment());
1913
1914 // 16 bytes:
1915 // 8 bytes for iResolution
1916 // 4 bytes for iTime
1917 // 4 bytes padding
1918 EXPECT_EQ(buffer_view.GetRange().length, 16u);
1919 }
1920
1921 TEST_P(EntityTest, ColorFilterWithForegroundColorAdvancedBlend) {
1922 auto image = CreateTextureForFixture("boston.jpg");
1923 auto filter = ColorFilterContents::MakeBlend(
1924 BlendMode::kColorBurn, FilterInput::Make({image}), Color::Red());
1925
1926 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1927 Entity entity;
1928 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1929 Matrix::MakeTranslation({500, 300}) *
1930 Matrix::MakeScale(Vector2{0.5, 0.5}));
1931 entity.SetContents(filter);
1932 return entity.Render(context, pass);
1933 };
1934 ASSERT_TRUE(OpenPlaygroundHere(callback));
1935 }
1936
1937 TEST_P(EntityTest, ColorFilterWithForegroundColorClearBlend) {
1938 auto image = CreateTextureForFixture("boston.jpg");
1939 auto filter = ColorFilterContents::MakeBlend(
1940 BlendMode::kClear, FilterInput::Make({image}), Color::Red());
1941
1942 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1943 Entity entity;
1944 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1945 Matrix::MakeTranslation({500, 300}) *
1946 Matrix::MakeScale(Vector2{0.5, 0.5}));
1947 entity.SetContents(filter);
1948 return entity.Render(context, pass);
1949 };
1950 ASSERT_TRUE(OpenPlaygroundHere(callback));
1951 }
1952
1953 TEST_P(EntityTest, ColorFilterWithForegroundColorSrcBlend) {
1954 auto image = CreateTextureForFixture("boston.jpg");
1955 auto filter = ColorFilterContents::MakeBlend(
1956 BlendMode::kSrc, FilterInput::Make({image}), Color::Red());
1957
1958 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1959 Entity entity;
1960 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1961 Matrix::MakeTranslation({500, 300}) *
1962 Matrix::MakeScale(Vector2{0.5, 0.5}));
1963 entity.SetContents(filter);
1964 return entity.Render(context, pass);
1965 };
1966 ASSERT_TRUE(OpenPlaygroundHere(callback));
1967 }
1968
1969 TEST_P(EntityTest, ColorFilterWithForegroundColorDstBlend) {
1970 auto image = CreateTextureForFixture("boston.jpg");
1971 auto filter = ColorFilterContents::MakeBlend(
1972 BlendMode::kDst, FilterInput::Make({image}), Color::Red());
1973
1974 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1975 Entity entity;
1976 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1977 Matrix::MakeTranslation({500, 300}) *
1978 Matrix::MakeScale(Vector2{0.5, 0.5}));
1979 entity.SetContents(filter);
1980 return entity.Render(context, pass);
1981 };
1982 ASSERT_TRUE(OpenPlaygroundHere(callback));
1983 }
1984
1985 TEST_P(EntityTest, ColorFilterWithForegroundColorSrcInBlend) {
1986 auto image = CreateTextureForFixture("boston.jpg");
1987 auto filter = ColorFilterContents::MakeBlend(
1988 BlendMode::kSrcIn, FilterInput::Make({image}), Color::Red());
1989
1990 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1991 Entity entity;
1992 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1993 Matrix::MakeTranslation({500, 300}) *
1994 Matrix::MakeScale(Vector2{0.5, 0.5}));
1995 entity.SetContents(filter);
1996 return entity.Render(context, pass);
1997 };
1998 ASSERT_TRUE(OpenPlaygroundHere(callback));
1999 }
2000
2001 TEST_P(EntityTest, CoverageForStrokePathWithNegativeValuesInTransform) {
2002 auto arrow_head = flutter::DlPathBuilder{}
2003 .MoveTo({50, 120})
2004 .LineTo({120, 190})
2005 .LineTo({190, 120})
2006 .TakePath();
2007 auto geometry = Geometry::MakeStrokePath(arrow_head, //
2008 {
2009 .width = 15.0f,
2010 .cap = Cap::kRound,
2011 .join = Join::kRound,
2012 .miter_limit = 4.0f,
2013 });
2014
2015 auto transform = Matrix::MakeTranslation({300, 300}) *
2016 Matrix::MakeRotationZ(Radians(kPiOver2));
2017 // Note that e[0][0] used to be tested here, but it was -epsilon solely
2018 // due to floating point inaccuracy in the transcendental trig functions.
2019 // e[1][0] is the intended negative value that we care about (-1.0) as it
2020 // comes from the rotation of pi/2.
2021 EXPECT_LT(transform.e[1][0], 0.0f);
2022 auto coverage = geometry->GetCoverage(transform);
2023 ASSERT_RECT_NEAR(coverage.value(), Rect::MakeXYWH(102.5, 342.5, 85, 155));
2024 }
2025
2026 TEST_P(EntityTest, SolidColorContentsIsOpaque) {
2027 Matrix matrix;
2028 SolidColorContents contents;
2029 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2030 contents.SetGeometry(geom.get());
2031
2032 contents.SetColor(Color::CornflowerBlue());
2033 EXPECT_TRUE(contents.IsOpaque(matrix));
2034 contents.SetColor(Color::CornflowerBlue().WithAlpha(0.5));
2035 EXPECT_FALSE(contents.IsOpaque(matrix));
2036
2037 // Create stroked path that required alpha coverage.
2038 geom = Geometry::MakeStrokePath(flutter::DlPath::MakeLine({0, 0}, {100, 100}),
2039 {.width = 0.05});
2040 contents.SetGeometry(geom.get());
2041 contents.SetColor(Color::CornflowerBlue());
2042
2043 EXPECT_FALSE(contents.IsOpaque(matrix));
2044 }
2045
2046 TEST_P(EntityTest, ConicalGradientContentsIsOpaque) {
2047 Matrix matrix;
2048 ConicalGradientContents contents;
2049 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2050 contents.SetGeometry(geom.get());
2051
2052 contents.SetColors({Color::CornflowerBlue()});
2053 EXPECT_FALSE(contents.IsOpaque(matrix));
2054 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
2055 EXPECT_FALSE(contents.IsOpaque(matrix));
2056
2057 // Create stroked path that required alpha coverage.
2058 geom = Geometry::MakeStrokePath(
2059 flutter::DlPathBuilder{}.MoveTo({0, 0}).LineTo({100, 100}).TakePath(),
2060 {.width = 0.05f});
2061 contents.SetGeometry(geom.get());
2062 contents.SetColors({Color::CornflowerBlue()});
2063
2064 EXPECT_FALSE(contents.IsOpaque(matrix));
2065 }
2066
2067 TEST_P(EntityTest, LinearGradientContentsIsOpaque) {
2068 Matrix matrix;
2069 LinearGradientContents contents;
2070 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2071 contents.SetGeometry(geom.get());
2072
2073 contents.SetColors({Color::CornflowerBlue()});
2074 EXPECT_TRUE(contents.IsOpaque(matrix));
2075 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
2076 EXPECT_FALSE(contents.IsOpaque(matrix));
2077 contents.SetColors({Color::CornflowerBlue()});
2078 contents.SetTileMode(Entity::TileMode::kDecal);
2079 EXPECT_FALSE(contents.IsOpaque(matrix));
2080
2081 // Create stroked path that required alpha coverage.
2082 geom = Geometry::MakeStrokePath(
2083 flutter::DlPathBuilder{}.MoveTo({0, 0}).LineTo({100, 100}).TakePath(),
2084 {.width = 0.05f});
2085 contents.SetGeometry(geom.get());
2086 contents.SetColors({Color::CornflowerBlue()});
2087
2088 EXPECT_FALSE(contents.IsOpaque(matrix));
2089 }
2090
2091 TEST_P(EntityTest, RadialGradientContentsIsOpaque) {
2092 Matrix matrix;
2093 RadialGradientContents contents;
2094 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2095 contents.SetGeometry(geom.get());
2096
2097 contents.SetColors({Color::CornflowerBlue()});
2098 EXPECT_TRUE(contents.IsOpaque(matrix));
2099 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
2100 EXPECT_FALSE(contents.IsOpaque(matrix));
2101 contents.SetColors({Color::CornflowerBlue()});
2102 contents.SetTileMode(Entity::TileMode::kDecal);
2103 EXPECT_FALSE(contents.IsOpaque(matrix));
2104
2105 // Create stroked path that required alpha coverage.
2106 geom = Geometry::MakeStrokePath(
2107 flutter::DlPathBuilder{}.MoveTo({0, 0}).LineTo({100, 100}).TakePath(),
2108 {.width = 0.05});
2109 contents.SetGeometry(geom.get());
2110 contents.SetColors({Color::CornflowerBlue()});
2111
2112 EXPECT_FALSE(contents.IsOpaque(matrix));
2113 }
2114
2115 TEST_P(EntityTest, SweepGradientContentsIsOpaque) {
2116 Matrix matrix;
2117 RadialGradientContents contents;
2118 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2119 contents.SetGeometry(geom.get());
2120
2121 contents.SetColors({Color::CornflowerBlue()});
2122 EXPECT_TRUE(contents.IsOpaque(matrix));
2123 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
2124 EXPECT_FALSE(contents.IsOpaque(matrix));
2125 contents.SetColors({Color::CornflowerBlue()});
2126 contents.SetTileMode(Entity::TileMode::kDecal);
2127 EXPECT_FALSE(contents.IsOpaque(matrix));
2128
2129 // Create stroked path that required alpha coverage.
2130 geom = Geometry::MakeStrokePath(
2131 flutter::DlPathBuilder{}.MoveTo({0, 0}).LineTo({100, 100}).TakePath(),
2132 {.width = 0.05f});
2133 contents.SetGeometry(geom.get());
2134 contents.SetColors({Color::CornflowerBlue()});
2135
2136 EXPECT_FALSE(contents.IsOpaque(matrix));
2137 }
2138
2139 TEST_P(EntityTest, TiledTextureContentsIsOpaque) {
2140 Matrix matrix;
2141 auto bay_bridge = CreateTextureForFixture("bay_bridge.jpg");
2142 TiledTextureContents contents;
2143 contents.SetTexture(bay_bridge);
2144 // This is a placeholder test. Images currently never decompress as opaque
2145 // (whether in Flutter or the playground), and so this should currently always
2146 // return false in practice.
2147 EXPECT_FALSE(contents.IsOpaque(matrix));
2148 }
2149
2150 TEST_P(EntityTest, PointFieldGeometryCoverage) {
2151 std::vector<Point> points = {{10, 20}, {100, 200}};
2152 PointFieldGeometry geometry(points.data(), 2, 5.0, false);
2153 ASSERT_EQ(geometry.GetCoverage(Matrix()), Rect::MakeLTRB(5, 15, 105, 205));
2154 ASSERT_EQ(geometry.GetCoverage(Matrix::MakeTranslation({30, 0, 0})),
2155 Rect::MakeLTRB(35, 15, 135, 205));
2156 }
2157
2158 TEST_P(EntityTest, ColorFilterContentsWithLargeGeometry) {
2159 Entity entity;
2160 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
2161 auto src_contents = std::make_shared<SolidColorContents>();
2162 auto src_geom = Geometry::MakeRect(Rect::MakeLTRB(-300, -500, 30000, 50000));
2163 src_contents->SetGeometry(src_geom.get());
2164 src_contents->SetColor(Color::Red());
2165
2166 auto dst_contents = std::make_shared<SolidColorContents>();
2167 auto dst_geom = Geometry::MakeRect(Rect::MakeLTRB(300, 500, 20000, 30000));
2168 dst_contents->SetGeometry(dst_geom.get());
2169 dst_contents->SetColor(Color::Blue());
2170
2171 auto contents = ColorFilterContents::MakeBlend(
2172 BlendMode::kSrcOver, {FilterInput::Make(dst_contents, false),
2173 FilterInput::Make(src_contents, false)});
2174 entity.SetContents(std::move(contents));
2175 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
2176 }
2177
2178 TEST_P(EntityTest, TextContentsCeilsGlyphScaleToDecimal) {
2179 ASSERT_EQ(TextFrame::RoundScaledFontSize(0.4321111f), Rational(43, 100));
2180 ASSERT_EQ(TextFrame::RoundScaledFontSize(0.5321111f), Rational(53, 100));
2181 ASSERT_EQ(TextFrame::RoundScaledFontSize(2.1f), Rational(21, 10));
2182 ASSERT_EQ(TextFrame::RoundScaledFontSize(0.0f), Rational(0, 1));
2183 ASSERT_EQ(TextFrame::RoundScaledFontSize(100000000.0f), Rational(48, 1));
2184 }
2185
2186 TEST_P(EntityTest, SpecializationConstantsAreAppliedToVariants) {
2187 auto content_context = GetContentContext();
2188
2189 auto default_gyph = content_context->GetGlyphAtlasPipeline({
2190 .color_attachment_pixel_format = PixelFormat::kR8G8B8A8UNormInt,
2191 .has_depth_stencil_attachments = false,
2192 });
2193 auto alt_gyph = content_context->GetGlyphAtlasPipeline(
2194 {.color_attachment_pixel_format = PixelFormat::kR8G8B8A8UNormInt,
2195 .has_depth_stencil_attachments = true});
2196
2197 EXPECT_NE(default_gyph, alt_gyph);
2198 EXPECT_EQ(default_gyph->GetDescriptor().GetSpecializationConstants(),
2199 alt_gyph->GetDescriptor().GetSpecializationConstants());
2200
2201 auto use_a8 = GetContext()->GetCapabilities()->GetDefaultGlyphAtlasFormat() ==
2202 PixelFormat::kA8UNormInt;
2203
2204 std::vector<Scalar> expected_constants = {static_cast<Scalar>(use_a8)};
2205 EXPECT_EQ(default_gyph->GetDescriptor().GetSpecializationConstants(),
2206 expected_constants);
2207 }
2208
2209 TEST_P(EntityTest, DecalSpecializationAppliedToMorphologyFilter) {
2210 auto content_context = GetContentContext();
2211 auto default_color_burn = content_context->GetMorphologyFilterPipeline({
2212 .color_attachment_pixel_format = PixelFormat::kR8G8B8A8UNormInt,
2213 });
2214
2215 auto decal_supported = static_cast<Scalar>(
2216 GetContext()->GetCapabilities()->SupportsDecalSamplerAddressMode());
2217 std::vector<Scalar> expected_constants = {decal_supported};
2218 ASSERT_EQ(default_color_burn->GetDescriptor().GetSpecializationConstants(),
2219 expected_constants);
2220 }
2221
2222 // This doesn't really tell you if the hashes will have frequent
2223 // collisions, but since this type is only used to hash a bounded
2224 // set of options, we can just compare benchmarks.
2225 TEST_P(EntityTest, ContentContextOptionsHasReasonableHashFunctions) {
2226 ContentContextOptions opts;
2227 auto hash_a = opts.ToKey();
2228
2229 opts.blend_mode = BlendMode::kColorBurn;
2230 auto hash_b = opts.ToKey();
2231
2232 opts.has_depth_stencil_attachments = false;
2233 auto hash_c = opts.ToKey();
2234
2235 opts.primitive_type = PrimitiveType::kPoint;
2236 auto hash_d = opts.ToKey();
2237
2238 EXPECT_NE(hash_a, hash_b);
2239 EXPECT_NE(hash_b, hash_c);
2240 EXPECT_NE(hash_c, hash_d);
2241 }
2242
2243 #ifdef FML_OS_LINUX
2244 TEST_P(EntityTest, FramebufferFetchVulkanBindingOffsetIsTheSame) {
2245 // Using framebuffer fetch on Vulkan requires that we maintain a subpass input
2246 // binding that we don't have a good route for configuring with the
2247 // current metadata approach. This test verifies that the binding value
2248 // doesn't change
2249 // from the expected constant.
2250 // See also:
2251 // * impeller/renderer/backend/vulkan/binding_helpers_vk.cc
2252 // * impeller/entity/shaders/blending/framebuffer_blend.frag
2253 // This test only works on Linux because macOS hosts incorrectly
2254 // populate the
2255 // Vulkan descriptor sets based on the MSL compiler settings.
2256
2257 bool expected_layout = false;
2258 for (const DescriptorSetLayout& layout : FramebufferBlendColorBurnPipeline::
2259 FragmentShader::kDescriptorSetLayouts) {
2260 if (layout.binding == 64 &&
2261 layout.descriptor_type == DescriptorType::kInputAttachment) {
2262 expected_layout = true;
2263 }
2264 }
2265 EXPECT_TRUE(expected_layout);
2266 }
2267 #endif
2268
2269 TEST_P(EntityTest, FillPathGeometryGetPositionBufferReturnsExpectedMode) {
2270 RenderTarget target;
2271 testing::MockRenderPass mock_pass(GetContext(), target);
2272
2273 auto get_result = [this, &mock_pass](const flutter::DlPath& path) {
2274 auto geometry = Geometry::MakeFillPath(
2275 path, /* inner rect */ Rect::MakeLTRB(0, 0, 100, 100));
2276 return geometry->GetPositionBuffer(*GetContentContext(), {}, mock_pass);
2277 };
2278
2279 // Convex path
2280 {
2281 GeometryResult result =
2282 get_result(flutter::DlPath::MakeRect(Rect::MakeLTRB(0, 0, 100, 100)));
2283 EXPECT_EQ(result.mode, GeometryResult::Mode::kNormal);
2284 }
2285
2286 // Concave path
2287 {
2288 flutter::DlPath path = flutter::DlPathBuilder{}
2289 .MoveTo({0, 0})
2290 .LineTo({100, 0})
2291 .LineTo({100, 100})
2292 .LineTo({51, 50})
2293 .Close()
2294 .TakePath();
2295 GeometryResult result = get_result(path);
2296 EXPECT_EQ(result.mode, GeometryResult::Mode::kNonZero);
2297 }
2298 }
2299
2300 TEST_P(EntityTest, FailOnValidationError) {
2301 if (GetParam() != PlaygroundBackend::kVulkan) {
2302 GTEST_SKIP() << "Validation is only fatal on Vulkan backend.";
2303 }
2304 EXPECT_DEATH(
2305 // The easiest way to trigger a validation error is to try to compile
2306 // a shader with an unsupported pixel format.
2307 GetContentContext()->GetBlendColorBurnPipeline({
2308 .color_attachment_pixel_format = PixelFormat::kUnknown,
2309 .has_depth_stencil_attachments = false,
2310 }),
2311 "");
2312 }
2313
2314 TEST_P(EntityTest, CanComputeGeometryForEmptyPathsWithoutCrashing) {
2315 flutter::DlPath path = flutter::DlPath::MakeRect(Rect::MakeLTRB(0, 0, 0, 0));
2316
2317 EXPECT_TRUE(path.GetBounds().IsEmpty());
2318
2319 auto geom = Geometry::MakeFillPath(path);
2320
2321 Entity entity;
2322 RenderTarget target =
2323 GetContentContext()->GetRenderTargetCache()->CreateOffscreen(
2324 *GetContext(), {1, 1}, 1u);
2325 testing::MockRenderPass render_pass(GetContext(), target);
2326 auto position_result =
2327 geom->GetPositionBuffer(*GetContentContext(), entity, render_pass);
2328
2329 EXPECT_EQ(position_result.vertex_buffer.vertex_count, 0u);
2330
2331 EXPECT_EQ(geom->GetResultMode(), GeometryResult::Mode::kNormal);
2332 }
2333
2334 TEST_P(EntityTest, CanRenderEmptyPathsWithoutCrashing) {
2335 flutter::DlPath path = flutter::DlPath::MakeRect(Rect::MakeLTRB(0, 0, 0, 0));
2336
2337 EXPECT_TRUE(path.GetBounds().IsEmpty());
2338
2339 auto contents = std::make_shared<SolidColorContents>();
2340 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
2341 contents->SetGeometry(geom.get());
2342 contents->SetColor(Color::Red());
2343
2344 Entity entity;
2345 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
2346 entity.SetContents(contents);
2347
2348 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
2349 }
2350
2351 TEST_P(EntityTest, DrawSuperEllipse) {
2352 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
2353 // UI state.
2354 static float alpha = 10;
2355 static float beta = 10;
2356 static float radius = 40;
2357 static int degree = 4;
2358 static Color color = Color::Red();
2359
2360 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
2361 ImGui::SliderFloat("Alpha", &alpha, 0, 100);
2362 ImGui::SliderFloat("Beta", &beta, 0, 100);
2363 ImGui::SliderInt("Degreee", &degree, 1, 20);
2364 ImGui::SliderFloat("Radius", &radius, 0, 400);
2365 ImGui::ColorEdit4("Color", reinterpret_cast<float*>(&color));
2366 ImGui::End();
2367
2368 auto contents = std::make_shared<SolidColorContents>();
2369 std::unique_ptr<SuperellipseGeometry> geom =
2370 std::make_unique<SuperellipseGeometry>(Point{400, 400}, radius, degree,
2371 alpha, beta);
2372 contents->SetColor(color);
2373 contents->SetGeometry(geom.get());
2374
2375 Entity entity;
2376 entity.SetContents(contents);
2377
2378 return entity.Render(context, pass);
2379 };
2380
2381 ASSERT_TRUE(OpenPlaygroundHere(callback));
2382 }
2383
2384 TEST_P(EntityTest, DrawRoundSuperEllipse) {
2385 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
2386 // UI state.
2387 static int style_index = 0;
2388 static float center[2] = {830, 830};
2389 static float size[2] = {600, 600};
2390 static bool horizontal_symmetry = true;
2391 static bool vertical_symmetry = true;
2392 static bool corner_symmetry = true;
2393
2394 const char* style_options[] = {"Fill", "Stroke"};
2395
2396 // Initially radius_tl[0] will be mirrored to all 8 values since all 3
2397 // symmetries are enabled.
2398 static std::array<float, 2> radius_tl = {200};
2399 static std::array<float, 2> radius_tr;
2400 static std::array<float, 2> radius_bl;
2401 static std::array<float, 2> radius_br;
2402
2403 auto AddRadiusControl = [](std::array<float, 2>& radii, const char* tb_name,
2404 const char* lr_name) {
2405 std::string name = "Radius";
2406 if (!horizontal_symmetry || !vertical_symmetry) {
2407 name += ":";
2408 }
2409 if (!vertical_symmetry) {
2410 name = name + " " + tb_name;
2411 }
2412 if (!horizontal_symmetry) {
2413 name = name + " " + lr_name;
2414 }
2415 if (corner_symmetry) {
2416 ImGui::SliderFloat(name.c_str(), radii.data(), 0, 1000);
2417 } else {
2418 ImGui::SliderFloat2(name.c_str(), radii.data(), 0, 1000);
2419 }
2420 };
2421
2422 if (corner_symmetry) {
2423 radius_tl[1] = radius_tl[0];
2424 radius_tr[1] = radius_tr[0];
2425 radius_bl[1] = radius_bl[0];
2426 radius_br[1] = radius_br[0];
2427 }
2428
2429 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
2430 {
2431 ImGui::Combo("Style", &style_index, style_options,
2432 sizeof(style_options) / sizeof(char*));
2433 ImGui::SliderFloat2("Center", center, 0, 1000);
2434 ImGui::SliderFloat2("Size", size, 0, 1000);
2435 ImGui::Checkbox("Symmetry: Horizontal", &horizontal_symmetry);
2436 ImGui::Checkbox("Symmetry: Vertical", &vertical_symmetry);
2437 ImGui::Checkbox("Symmetry: Corners", &corner_symmetry);
2438 AddRadiusControl(radius_tl, "Top", "Left");
2439 if (!horizontal_symmetry) {
2440 AddRadiusControl(radius_tr, "Top", "Right");
2441 } else {
2442 radius_tr = radius_tl;
2443 }
2444 if (!vertical_symmetry) {
2445 AddRadiusControl(radius_bl, "Bottom", "Left");
2446 } else {
2447 radius_bl = radius_tl;
2448 }
2449 if (!horizontal_symmetry && !vertical_symmetry) {
2450 AddRadiusControl(radius_br, "Bottom", "Right");
2451 } else {
2452 if (horizontal_symmetry) {
2453 radius_br = radius_bl;
2454 } else {
2455 radius_br = radius_tr;
2456 }
2457 }
2458 }
2459
2460 ImGui::End();
2461
2462 RoundingRadii radii{
2463 .top_left = {radius_tl[0], radius_tl[1]},
2464 .top_right = {radius_tr[0], radius_tr[1]},
2465 .bottom_left = {radius_bl[0], radius_bl[1]},
2466 .bottom_right = {radius_br[0], radius_br[1]},
2467 };
2468
2469 auto rse = RoundSuperellipse::MakeRectRadii(
2470 RectMakeCenterSize({center[0], center[1]}, {size[0], size[1]}), radii);
2471
2472 flutter::DlPath path;
2473 std::unique_ptr<Geometry> geom;
2474 if (style_index == 0) {
2475 geom = std::make_unique<RoundSuperellipseGeometry>(
2476 RectMakeCenterSize({center[0], center[1]}, {size[0], size[1]}),
2477 radii);
2478 } else {
2479 path = flutter::DlPath::MakeRoundSuperellipse(rse);
2480 geom = Geometry::MakeStrokePath(path, {.width = 2.0f});
2481 }
2482
2483 auto contents = std::make_shared<SolidColorContents>();
2484 contents->SetColor(Color::Red());
2485 contents->SetGeometry(geom.get());
2486
2487 Entity entity;
2488 entity.SetContents(contents);
2489
2490 return entity.Render(context, pass);
2491 };
2492
2493 ASSERT_TRUE(OpenPlaygroundHere(callback));
2494 }
2495
2496 TEST_P(EntityTest, SolidColorApplyColorFilter) {
2497 auto contents = SolidColorContents();
2498 contents.SetColor(Color::CornflowerBlue().WithAlpha(0.75));
2499 auto result = contents.ApplyColorFilter([](const Color& color) {
2500 return color.Blend(Color::LimeGreen().WithAlpha(0.75), BlendMode::kScreen);
2501 });
2502 ASSERT_TRUE(result);
2503 ASSERT_COLOR_NEAR(contents.GetColor(),
2504 Color(0.424452, 0.828743, 0.79105, 0.9375));
2505 }
2506
2507 #define APPLY_COLOR_FILTER_GRADIENT_TEST(name) \
2508 TEST_P(EntityTest, name##GradientApplyColorFilter) { \
2509 auto contents = name##GradientContents(); \
2510 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.75)}); \
2511 auto result = contents.ApplyColorFilter([](const Color& color) { \
2512 return color.Blend(Color::LimeGreen().WithAlpha(0.75), \
2513 BlendMode::kScreen); \
2514 }); \
2515 ASSERT_TRUE(result); \
2516 \
2517 std::vector<Color> expected = {Color(0.433247, 0.879523, 0.825324, 0.75)}; \
2518 ASSERT_COLORS_NEAR(contents.GetColors(), expected); \
2519 }
2520
2521 APPLY_COLOR_FILTER_GRADIENT_TEST(Linear);
2522 APPLY_COLOR_FILTER_GRADIENT_TEST(Radial);
2523 APPLY_COLOR_FILTER_GRADIENT_TEST(Conical);
2524 APPLY_COLOR_FILTER_GRADIENT_TEST(Sweep);
2525
2526 TEST_P(EntityTest, GiantStrokePathAllocation) {
2527 flutter::DlPathBuilder builder;
2528 for (int i = 0; i < 10000; i++) {
2529 builder.LineTo(Point(i, i));
2530 }
2531 flutter::DlPath path = builder.TakePath();
2532 auto geom = Geometry::MakeStrokePath(path, {.width = 10.0f});
2533
2534 ContentContext content_context(GetContext(), /*typographer_context=*/nullptr);
2535 Entity entity;
2536
2537 auto cmd_buffer = content_context.GetContext()->CreateCommandBuffer();
2538
2539 RenderTargetAllocator allocator(
2540 content_context.GetContext()->GetResourceAllocator());
2541
2542 auto render_target = allocator.CreateOffscreen(
2543 *content_context.GetContext(), /*size=*/{10, 10}, /*mip_count=*/1);
2544 auto pass = cmd_buffer->CreateRenderPass(render_target);
2545
2546 GeometryResult result =
2547 geom->GetPositionBuffer(content_context, entity, *pass);
2548
2549 // Validate the buffer data overflowed the small buffer
2550 EXPECT_GT(result.vertex_buffer.vertex_count, kPointArenaSize);
2551
2552 // Validate that there are no uninitialized points near the gap.
2553 Point* written_data = reinterpret_cast<Point*>(
2554 (result.vertex_buffer.vertex_buffer.GetBuffer()->OnGetContents() +
2555 result.vertex_buffer.vertex_buffer.GetRange().offset));
2556
2557 std::vector<Point> expected = {
2558 Point(2043.46, 2050.54), //
2559 Point(2050.54, 2043.46), //
2560 Point(2044.46, 2051.54), //
2561 Point(2051.54, 2044.46), //
2562 Point(2045.46, 2052.54) //
2563 };
2564
2565 Point point = written_data[kPointArenaSize - 2];
2566 EXPECT_NEAR(point.x, expected[0].x, 0.1);
2567 EXPECT_NEAR(point.y, expected[0].y, 0.1);
2568
2569 point = written_data[kPointArenaSize - 1];
2570 EXPECT_NEAR(point.x, expected[1].x, 0.1);
2571 EXPECT_NEAR(point.y, expected[1].y, 0.1);
2572
2573 point = written_data[kPointArenaSize];
2574 EXPECT_NEAR(point.x, expected[2].x, 0.1);
2575 EXPECT_NEAR(point.y, expected[2].y, 0.1);
2576
2577 point = written_data[kPointArenaSize + 1];
2578 EXPECT_NEAR(point.x, expected[3].x, 0.1);
2579 EXPECT_NEAR(point.y, expected[3].y, 0.1);
2580
2581 point = written_data[kPointArenaSize + 2];
2582 EXPECT_NEAR(point.x, expected[4].x, 0.1);
2583 EXPECT_NEAR(point.y, expected[4].y, 0.1);
2584 }
2585
2586 } // namespace testing
2587 } // namespace impeller
2588
2589 // NOLINTEND(bugprone-unchecked-optional-access)
buffer_view
BufferView buffer_view
Definition: blit_command_gles.cc:154
impeller::ColorFilterContents::MakeColorMatrix
static std::shared_ptr< ColorFilterContents > MakeColorMatrix(FilterInput::Ref input, const ColorMatrix &color_matrix)
Definition: color_filter_contents.cc:58
impeller::ColorFilterContents::MakeSrgbToLinearFilter
static std::shared_ptr< ColorFilterContents > MakeSrgbToLinearFilter(FilterInput::Ref input)
Definition: color_filter_contents.cc:75
impeller::ColorFilterContents::MakeLinearToSrgbFilter
static std::shared_ptr< ColorFilterContents > MakeLinearToSrgbFilter(FilterInput::Ref input)
Definition: color_filter_contents.cc:68
impeller::ColorFilterContents::MakeBlend
static std::shared_ptr< ColorFilterContents > MakeBlend(BlendMode blend_mode, FilterInput::Vector inputs, std::optional< Color > foreground_color=std::nullopt)
the [inputs] are expected to be in the order of dst, src.
Definition: color_filter_contents.cc:17
impeller::ColorSourceContents::SetGeometry
void SetGeometry(const Geometry *geometry)
Set the geometry that this contents will use to render.
Definition: color_source_contents.cc:16
impeller::ConicalGradientContents
Definition: conical_gradient_contents.h:17
impeller::ConicalGradientContents::SetColors
void SetColors(std::vector< Color > colors)
Definition: conical_gradient_contents.cc:52
impeller::ContentContext
Definition: content_context.h:138
impeller::ContentContext::GetTransientsBuffer
HostBuffer & GetTransientsBuffer() const
Retrieve the currnent host buffer for transient storage.
Definition: content_context.h:297
impeller::ContentContext::GetSolidFillPipeline
PipelineRef GetSolidFillPipeline(ContentContextOptions opts) const
Definition: content_context.cc:1103
impeller::Contents::IsOpaque
virtual bool IsOpaque(const Matrix &transform) const
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
Definition: contents.cc:52
impeller::Context
To do anything rendering related with Impeller, you need a context.
Definition: context.h:65
impeller::Context::CreateCommandBuffer
virtual std::shared_ptr< CommandBuffer > CreateCommandBuffer() const =0
Create a new command buffer. Command buffers can be used to encode graphics, blit,...
impeller::Context::GetCommandQueue
virtual std::shared_ptr< CommandQueue > GetCommandQueue() const =0
Return the graphics queue for submitting command buffers.
impeller::Context::GetResourceAllocator
virtual std::shared_ptr< Allocator > GetResourceAllocator() const =0
Returns the allocator used to create textures and buffers on the device.
impeller::DeviceBuffer::AsBufferView
static BufferView AsBufferView(std::shared_ptr< DeviceBuffer > buffer)
Create a buffer view of this entire buffer.
Definition: device_buffer.cc:18
impeller::DeviceBuffer::OnGetContents
virtual uint8_t * OnGetContents() const =0
impeller::Entity
Definition: entity.h:26
impeller::Entity::SetTransform
void SetTransform(const Matrix &transform)
Set the global transform matrix for this Entity.
Definition: entity.cc:60
impeller::Entity::TileMode
TileMode
Definition: entity.h:48
impeller::Entity::TileMode::kDecal
@ kDecal
impeller::Entity::TileMode::kRepeat
@ kRepeat
impeller::Entity::TileMode::kClamp
@ kClamp
impeller::Entity::TileMode::kMirror
@ kMirror
impeller::Entity::GetCoverage
std::optional< Rect > GetCoverage() const
Definition: entity.cc:64
impeller::Entity::GetBlendMode
BlendMode GetBlendMode() const
Definition: entity.cc:101
impeller::Entity::SetContents
void SetContents(std::shared_ptr< Contents > contents)
Definition: entity.cc:72
impeller::Entity::SetBlendMode
void SetBlendMode(BlendMode blend_mode)
Definition: entity.cc:97
impeller::Entity::Render
bool Render(const ContentContext &renderer, RenderPass &parent_pass) const
Definition: entity.cc:144
impeller::Entity::GetTransform
const Matrix & GetTransform() const
Get the global transform matrix for this Entity.
Definition: entity.cc:44
impeller::Entity::kLastPipelineBlendMode
static constexpr BlendMode kLastPipelineBlendMode
Definition: entity.h:28
impeller::EntityPlayground
Definition: entity_playground.h:16
impeller::FilterContents::BlurStyle
BlurStyle
Definition: filter_contents.h:28
impeller::FilterContents::BlurStyle::kNormal
@ kNormal
Blurred inside and outside.
impeller::FilterContents::BlurStyle::kOuter
@ kOuter
Nothing inside, blurred outside.
impeller::FilterContents::BlurStyle::kInner
@ kInner
Blurred inside, nothing outside.
impeller::FilterContents::BlurStyle::kSolid
@ kSolid
Solid inside, blurred outside.
impeller::FilterContents::MorphType
MorphType
Definition: filter_contents.h:39
impeller::FilterContents::MorphType::kErode
@ kErode
impeller::FilterContents::MorphType::kDilate
@ kDilate
impeller::FilterContents::MakeMorphology
static std::shared_ptr< FilterContents > MakeMorphology(FilterInput::Ref input, Radius radius_x, Radius radius_y, MorphType morph_type)
Definition: filter_contents.cc:75
impeller::FilterContents::MakeBorderMaskBlur
static std::shared_ptr< FilterContents > MakeBorderMaskBlur(FilterInput::Ref input, Sigma sigma_x, Sigma sigma_y, BlurStyle blur_style=BlurStyle::kNormal)
Definition: filter_contents.cc:50
impeller::FilterContents::MakeGaussianBlur
static std::shared_ptr< FilterContents > MakeGaussianBlur(const FilterInput::Ref &input, Sigma sigma_x, Sigma sigma_y, Entity::TileMode tile_mode=Entity::TileMode::kDecal, BlurStyle mask_blur_style=BlurStyle::kNormal, const Geometry *mask_geometry=nullptr)
Definition: filter_contents.cc:37
impeller::FilterContents::MakeYUVToRGBFilter
static std::shared_ptr< FilterContents > MakeYUVToRGBFilter(std::shared_ptr< Texture > y_texture, std::shared_ptr< Texture > uv_texture, YUVColorSpace yuv_color_space)
Definition: filter_contents.cc:107
impeller::FilterInput::Make
static FilterInput::Ref Make(Variant input, bool msaa_enabled=true)
Definition: filter_input.cc:19
impeller::Geometry::MakeFillPath
static std::unique_ptr< Geometry > MakeFillPath(const flutter::DlPath &path, std::optional< Rect > inner_rect=std::nullopt)
Definition: geometry.cc:62
impeller::Geometry::MakeRect
static std::unique_ptr< Geometry > MakeRect(const Rect &rect)
Definition: geometry.cc:83
impeller::Geometry::MakeStrokePath
static std::unique_ptr< Geometry > MakeStrokePath(const flutter::DlPath &path, const StrokeParameters &stroke={})
Definition: geometry.cc:68
impeller::Geometry::MakeCover
static std::unique_ptr< Geometry > MakeCover()
Definition: geometry.cc:79
impeller::HostBuffer::EmplaceUniform
BufferView EmplaceUniform(const UniformType &uniform)
Emplace uniform data onto the host buffer. Ensure that backend specific uniform alignment requirement...
Definition: host_buffer.h:47
impeller::LinearGradientContents
Definition: linear_gradient_contents.h:17
impeller::LinearGradientContents::SetTileMode
void SetTileMode(Entity::TileMode tile_mode)
Definition: linear_gradient_contents.cc:43
impeller::LinearGradientContents::SetColors
void SetColors(std::vector< Color > colors)
Definition: linear_gradient_contents.cc:27
impeller::LinearGradientContents::IsOpaque
bool IsOpaque(const Matrix &transform) const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
Definition: linear_gradient_contents.cc:47
impeller::PointFieldGeometry
A geometry class specialized for Canvas::DrawPoints.
Definition: point_field_geometry.h:16
impeller::PointFieldGeometry::GetCoverage
std::optional< Rect > GetCoverage(const Matrix &transform) const override
Definition: point_field_geometry.cc:134
impeller::RadialGradientContents
Definition: radial_gradient_contents.h:17
impeller::RadialGradientContents::IsOpaque
bool IsOpaque(const Matrix &transform) const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
Definition: radial_gradient_contents.cc:46
impeller::RadialGradientContents::SetTileMode
void SetTileMode(Entity::TileMode tile_mode)
Definition: radial_gradient_contents.cc:26
impeller::RadialGradientContents::SetColors
void SetColors(std::vector< Color > colors)
Definition: radial_gradient_contents.cc:30
impeller::Rational
Definition: rational.h:13
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:30
impeller::RenderPipelineHandle
Definition: pipeline.h:161
impeller::RenderPipelineHandle::VertexShader
VertexShader_ VertexShader
Definition: pipeline.h:163
impeller::RenderPipelineHandle::FragmentShader
FragmentShader_ FragmentShader
Definition: pipeline.h:164
impeller::RenderTargetAllocator
a wrapper around the impeller [Allocator] instance that can be used to provide caching of allocated r...
Definition: render_target.h:149
impeller::RenderTargetAllocator::CreateOffscreen
virtual RenderTarget CreateOffscreen(const Context &context, ISize size, int mip_count, std::string_view label="Offscreen", RenderTarget::AttachmentConfig color_attachment_config=RenderTarget::kDefaultColorAttachmentConfig, std::optional< RenderTarget::AttachmentConfig > stencil_attachment_config=RenderTarget::kDefaultStencilAttachmentConfig, const std::shared_ptr< Texture > &existing_color_texture=nullptr, const std::shared_ptr< Texture > &existing_depth_stencil_texture=nullptr)
Definition: render_target.cc:322
impeller::RenderTarget
Definition: render_target.h:38
impeller::RuntimeEffectContents::EmplaceVulkanUniform
static BufferView EmplaceVulkanUniform(const std::shared_ptr< const std::vector< uint8_t >> &input_data, HostBuffer &host_buffer, const RuntimeUniformDescription &uniform, size_t minimum_uniform_alignment)
Definition: runtime_effect_contents.cc:33
impeller::SolidColorContents
Definition: solid_color_contents.h:14
impeller::SolidColorContents::IsOpaque
bool IsOpaque(const Matrix &transform) const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
Definition: solid_color_contents.cc:30
impeller::SolidColorContents::SetColor
void SetColor(Color color)
Definition: solid_color_contents.cc:18
impeller::StrokePathGeometry
A Geometry that produces fillable vertices representing the stroked outline of a |DlPath| object usin...
Definition: stroke_path_geometry.h:115
impeller::TextFrame::RoundScaledFontSize
static Rational RoundScaledFontSize(Scalar scale)
Definition: text_frame.cc:55
impeller::TextureContents::MakeRect
static std::shared_ptr< TextureContents > MakeRect(Rect destination)
Definition: texture_contents.cc:28
impeller::TiledTextureContents
Definition: tiled_texture_contents.h:19
impeller::TiledTextureContents::IsOpaque
bool IsOpaque(const Matrix &transform) const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
Definition: tiled_texture_contents.cc:100
impeller::TiledTextureContents::SetTexture
void SetTexture(std::shared_ptr< Texture > texture)
Definition: tiled_texture_contents.cc:41
impeller::VertexBufferBuilder
Definition: vertex_buffer_builder.h:35
impeller::VertexBufferBuilder::CreateVertexBuffer
VertexBuffer CreateVertexBuffer(HostBuffer &host_buffer) const
Definition: vertex_buffer_builder.h:95
impeller::VertexBufferBuilder::AddVertices
VertexBufferBuilder & AddVertices(std::initializer_list< VertexType_ > vertices)
Definition: vertex_buffer_builder.h:81
impeller::raw_ptr< Pipeline< PipelineDescriptor > >
color.h
color_filter_contents.h
command.h
conical_gradient_contents.h
content_context.h
contents.h
formats.h
device_buffer.h
entity.h
entity_playground.h
filter_contents.h
filter_input.h
blur_radius
Vector2 blur_radius
Blur radius in source pixels based on scaled_sigma.
Definition: gaussian_blur_filter_contents.cc:84
transform
Matrix transform
Definition: gaussian_blur_filter_contents.cc:214
padding
Vector2 padding
The halo padding in source space.
Definition: gaussian_blur_filter_contents.cc:86
gaussian_blur_filter_contents.h
geometry.h
geometry_asserts.h
ASSERT_RECT_NEAR
#define ASSERT_RECT_NEAR(a, b)
Definition: geometry_asserts.h:191
ASSERT_COLOR_NEAR
#define ASSERT_COLOR_NEAR(a, b)
Definition: geometry_asserts.h:192
host_buffer.h
linear_gradient_contents.h
impeller::saturated::b
SI b
Definition: saturated_math.h:87
impeller::testing::EntityTest
EntityPlayground EntityTest
Definition: tiled_texture_contents_unittests.cc:19
impeller::testing::RectMakeCenterSize
Rect RectMakeCenterSize(Point center, Size size)
Definition: entity_unittests.cc:68
impeller::testing::TEST_P
TEST_P(AiksTest, DrawAtlasNoColor)
Definition: aiks_dl_atlas_unittests.cc:60
impeller::testing::APPLY_COLOR_FILTER_GRADIENT_TEST
APPLY_COLOR_FILTER_GRADIENT_TEST(Linear)
impeller::testing::INSTANTIATE_PLAYGROUND_SUITE
INSTANTIATE_PLAYGROUND_SUITE(AiksTest)
impeller::testing::RGBToYUV
static Vector3 RGBToYUV(Vector3 rgb, YUVColorSpace yuv_color_space)
Definition: entity_unittests.cc:1640
impeller::testing::CreateTestYUVTextures
static std::vector< std::shared_ptr< Texture > > CreateTestYUVTextures(Context *context, YUVColorSpace yuv_color_space)
Definition: entity_unittests.cc:1657
impeller
Definition: allocation.cc:12
impeller::YUVColorSpace
YUVColorSpace
Definition: color.h:54
impeller::YUVColorSpace::kBT601FullRange
@ kBT601FullRange
impeller::YUVColorSpace::kBT601LimitedRange
@ kBT601LimitedRange
impeller::Join
Join
An enum that describes ways to join two segments of a path.
Definition: stroke_parameters.h:20
impeller::Join::kRound
@ kRound
impeller::Join::kMiter
@ kMiter
impeller::Join::kBevel
@ kBevel
impeller::PrimitiveType::kPoint
@ kPoint
Draws a point at each input vertex.
impeller::PrimitiveType::kTriangle
@ kTriangle
impeller::Vector2
Point Vector2
Definition: point.h:331
impeller::kPi
constexpr float kPi
Definition: constants.h:26
impeller::Scalar
float Scalar
Definition: scalar.h:19
impeller::DrawPlaygroundPoint
Point DrawPlaygroundPoint(PlaygroundPoint &point)
Definition: widgets.cc:9
impeller::DrawPlaygroundLine
std::tuple< Point, Point > DrawPlaygroundLine(PlaygroundPoint &point_a, PlaygroundPoint &point_b)
Definition: widgets.cc:50
impeller::PlaygroundBackendToRuntimeStageBackend
constexpr RuntimeStageBackend PlaygroundBackendToRuntimeStageBackend(PlaygroundBackend backend)
Definition: playground.h:33
impeller::Point
TPoint< Scalar > Point
Definition: point.h:327
impeller::StorageMode::kHostVisible
@ kHostVisible
impeller::Cap
Cap
An enum that describes ways to decorate the end of a path contour.
Definition: stroke_parameters.h:13
impeller::Cap::kRound
@ kRound
impeller::Cap::kButt
@ kButt
impeller::Cap::kSquare
@ kSquare
impeller::FS
LinePipeline::FragmentShader FS
Definition: line_contents.cc:14
impeller::PixelFormat::kR8UNormInt
@ kR8UNormInt
impeller::PixelFormat::kUnknown
@ kUnknown
impeller::PixelFormat::kA8UNormInt
@ kA8UNormInt
impeller::PixelFormat::kR8G8UNormInt
@ kR8G8UNormInt
impeller::PixelFormat::kR8G8B8A8UNormInt
@ kR8G8B8A8UNormInt
impeller::kPiOver2
constexpr float kPiOver2
Definition: constants.h:32
impeller::DlPath
flutter::DlPath DlPath
Definition: dl_dispatcher.h:29
impeller::BlendMode
BlendMode
Definition: color.h:58
impeller::BlendMode::kSrcOut
@ kSrcOut
impeller::BlendMode::kColorBurn
@ kColorBurn
impeller::BlendMode::kPlus
@ kPlus
impeller::BlendMode::kDst
@ kDst
impeller::BlendMode::kDstIn
@ kDstIn
impeller::BlendMode::kModulate
@ kModulate
impeller::BlendMode::kScreen
@ kScreen
impeller::BlendMode::kSrcOver
@ kSrcOver
impeller::BlendMode::kXor
@ kXor
impeller::BlendMode::kSrc
@ kSrc
impeller::BlendMode::kSoftLight
@ kSoftLight
impeller::BlendMode::kSrcATop
@ kSrcATop
impeller::BlendMode::kDstATop
@ kDstATop
impeller::BlendMode::kDstOver
@ kDstOver
impeller::BlendMode::kDstOut
@ kDstOut
impeller::BlendMode::kSrcIn
@ kSrcIn
impeller::BlendMode::kClear
@ kClear
impeller::PlaygroundBackend::kOpenGLES
@ kOpenGLES
impeller::PlaygroundBackend::kVulkan
@ kVulkan
impeller::VS
LinePipeline::VertexShader VS
Definition: line_contents.cc:13
impeller::MoveTo
void MoveTo(PathBuilder *builder, Scalar x, Scalar y)
Definition: tessellator.cc:20
impeller::kPointArenaSize
static constexpr size_t kPointArenaSize
The size of the point arena buffer stored on the tessellator.
Definition: tessellator.h:25
impeller::LineTo
void LineTo(PathBuilder *builder, Scalar x, Scalar y)
Definition: tessellator.cc:24
impeller::DescriptorType::kInputAttachment
@ kInputAttachment
impeller::OptionsFromPass
ContentContextOptions OptionsFromPass(const RenderPass &pass)
Definition: contents.cc:19
impeller::Close
void Close(PathBuilder *builder)
Definition: tessellator.cc:38
pipeline_descriptor.h
playground.h
point.h
point_field_geometry.h
radial_gradient_contents.h
raw_ptr.h
render_pass.h
render_target.h
round_superellipse_geometry.h
runtime_effect_contents.h
sigma.h
solid_color_contents.h
solid_rrect_blur_contents.h
stroke_path_geometry.h
impeller::BufferView::GetRange
Range GetRange() const
Definition: buffer_view.h:27
impeller::BufferView::GetBuffer
const DeviceBuffer * GetBuffer() const
Definition: buffer_view.cc:17
impeller::Color
Definition: color.h:124
impeller::Color::LimeGreen
static constexpr Color LimeGreen()
Definition: color.h:602
impeller::Color::MintCream
static constexpr Color MintCream()
Definition: color.h:658
impeller::Color::alpha
Scalar alpha
Definition: color.h:143
impeller::Color::DeepPink
static constexpr Color DeepPink()
Definition: color.h:434
impeller::Color::Black
static constexpr Color Black()
Definition: color.h:266
impeller::Color::CornflowerBlue
static constexpr Color CornflowerBlue()
Definition: color.h:342
impeller::Color::White
static constexpr Color White()
Definition: color.h:264
impeller::Color::WithAlpha
constexpr Color WithAlpha(Scalar new_alpha) const
Definition: color.h:278
impeller::Color::WhiteTransparent
static constexpr Color WhiteTransparent()
Definition: color.h:268
impeller::Color::Coral
static constexpr Color Coral()
Definition: color.h:338
impeller::Color::Red
static constexpr Color Red()
Definition: color.h:272
impeller::Color::Premultiply
constexpr Color Premultiply() const
Definition: color.h:212
impeller::Color::Blend
Color Blend(Color source, BlendMode blend_mode) const
Blends an unpremultiplied destination color into a given unpremultiplied source color to form a new u...
Definition: color.cc:157
impeller::Color::Blue
static constexpr Color Blue()
Definition: color.h:276
impeller::Color::Green
static constexpr Color Green()
Definition: color.h:274
impeller::ColorMatrix
Definition: color.h:117
impeller::ColorMatrix::array
Scalar array[20]
Definition: color.h:118
impeller::ContentContextOptions
Definition: content_context.h:40
impeller::ContentContextOptions::primitive_type
PrimitiveType primitive_type
Definition: content_context.h:97
impeller::ContentContextOptions::has_depth_stencil_attachments
bool has_depth_stencil_attachments
Definition: content_context.h:99
impeller::ContentContextOptions::blend_mode
BlendMode blend_mode
Definition: content_context.h:94
impeller::ContentContextOptions::ToKey
constexpr uint64_t ToKey() const
Definition: content_context.h:103
impeller::DescriptorSetLayout
Definition: shader_types.h:167
impeller::GeometryResult
Definition: geometry.h:21
impeller::GeometryResult::Mode::kNormal
@ kNormal
The geometry has no overlapping triangles.
impeller::GeometryResult::Mode::kNonZero
@ kNonZero
impeller::GeometryResult::vertex_buffer
VertexBuffer vertex_buffer
Definition: geometry.h:38
impeller::GeometryResult::mode
Mode mode
Definition: geometry.h:40
impeller::Matrix
A 4x4 matrix using column-major storage.
Definition: matrix.h:37
impeller::Matrix::MakeTranslation
static constexpr Matrix MakeTranslation(const Vector3 &t)
Definition: matrix.h:95
impeller::Matrix::IsIdentity
constexpr bool IsIdentity() const
Definition: matrix.h:467
impeller::Matrix::MakeRotationY
static Matrix MakeRotationY(Radians r)
Definition: matrix.h:208
impeller::Matrix::MakeSkew
static constexpr Matrix MakeSkew(Scalar sx, Scalar sy)
Definition: matrix.h:127
impeller::Matrix::MakeRotationZ
static Matrix MakeRotationZ(Radians r)
Definition: matrix.h:223
impeller::Matrix::MakeScale
static constexpr Matrix MakeScale(const Vector3 &s)
Definition: matrix.h:104
impeller::Matrix::MakeRotationX
static Matrix MakeRotationX(Radians r)
Definition: matrix.h:193
impeller::PlaygroundPoint
Definition: widgets.h:21
impeller::Radians
Definition: scalar.h:44
impeller::Radius
For convolution filters, the "radius" is the size of the convolution kernel to use on the local space...
Definition: sigma.h:48
impeller::Range::offset
size_t offset
Definition: range.h:14
impeller::RoundSuperellipse::MakeRectRadii
static RoundSuperellipse MakeRectRadii(const Rect &rect, const RoundingRadii &radii)
Definition: round_superellipse.cc:12
impeller::RoundingRadii
Definition: rounding_radii.h:14
impeller::RoundingRadii::top_left
Size top_left
Definition: rounding_radii.h:15
impeller::Sigma
In filters that use Gaussian distributions, "sigma" is a size of one standard deviation in terms of t...
Definition: sigma.h:32
impeller::TPoint< Scalar >
impeller::TPoint::y
Type y
Definition: point.h:31
impeller::TPoint::x
Type x
Definition: point.h:30
impeller::TRect< Scalar >
impeller::TRect< Scalar >::MakeXYWH
constexpr static TRect MakeXYWH(Type x, Type y, Type width, Type height)
Definition: rect.h:136
impeller::TRect::Shift
constexpr TRect< T > Shift(T dx, T dy) const
Returns a new rectangle translated by the given offset.
Definition: rect.h:606
impeller::TRect< Scalar >::MakeSize
constexpr static TRect MakeSize(const TSize< U > &size)
Definition: rect.h:150
impeller::TRect< Scalar >::MakeLTRB
constexpr static TRect MakeLTRB(Type left, Type top, Type right, Type bottom)
Definition: rect.h:129
impeller::TSize< Scalar >
impeller::TextureDescriptor
A lightweight object that describes the attributes of a texture that can then used an allocator to cr...
Definition: texture_descriptor.h:38
impeller::TextureDescriptor::size
ISize size
Definition: texture_descriptor.h:42
impeller::TextureDescriptor::storage_mode
StorageMode storage_mode
Definition: texture_descriptor.h:39
impeller::TextureDescriptor::format
PixelFormat format
Definition: texture_descriptor.h:41
impeller::Vector3
Definition: vector.h:20
impeller::Vector3::x
Scalar x
Definition: vector.h:23
impeller::Vector3::y
Scalar y
Definition: vector.h:24
impeller::Vector3::z
Scalar z
Definition: vector.h:25
impeller::VertexBuffer::vertex_count
size_t vertex_count
Definition: vertex_buffer.h:25
impeller::VertexBuffer::vertex_buffer
BufferView vertex_buffer
Definition: vertex_buffer.h:16
superellipse_geometry.h
sweep_gradient_contents.h
points
std::vector< Point > points
Definition: tessellator_libtess.cc:76
text_contents.h
texture_contents.h
texture_descriptor.h
tiled_texture_contents.h
vector.h
vertex_buffer_builder.h
widgets.h