| 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/testing/dl_test_snippets.h"
13 #include "fml/logging.h"
14 #include "gtest/gtest.h"
15 #include "impeller/core/device_buffer.h"
16 #include "impeller/core/formats.h"
17 #include "impeller/core/host_buffer.h"
18 #include "impeller/core/raw_ptr.h"
19 #include "impeller/core/texture_descriptor.h"
20 #include "impeller/entity/contents/conical_gradient_contents.h"
21 #include "impeller/entity/contents/content_context.h"
22 #include "impeller/entity/contents/contents.h"
23 #include "impeller/entity/contents/filters/color_filter_contents.h"
24 #include "impeller/entity/contents/filters/filter_contents.h"
25 #include "impeller/entity/contents/filters/gaussian_blur_filter_contents.h"
26 #include "impeller/entity/contents/filters/inputs/filter_input.h"
27 #include "impeller/entity/contents/linear_gradient_contents.h"
28 #include "impeller/entity/contents/radial_gradient_contents.h"
29 #include "impeller/entity/contents/runtime_effect_contents.h"
30 #include "impeller/entity/contents/solid_color_contents.h"
31 #include "impeller/entity/contents/solid_rrect_blur_contents.h"
32 #include "impeller/entity/contents/sweep_gradient_contents.h"
33 #include "impeller/entity/contents/text_contents.h"
34 #include "impeller/entity/contents/texture_contents.h"
35 #include "impeller/entity/contents/tiled_texture_contents.h"
36 #include "impeller/entity/entity.h"
37 #include "impeller/entity/entity_playground.h"
38 #include "impeller/entity/geometry/geometry.h"
39 #include "impeller/entity/geometry/point_field_geometry.h"
40 #include "impeller/entity/geometry/round_superellipse_geometry.h"
41 #include "impeller/entity/geometry/stroke_path_geometry.h"
42 #include "impeller/entity/geometry/superellipse_geometry.h"
43 #include "impeller/geometry/color.h"
44 #include "impeller/geometry/geometry_asserts.h"
45 #include "impeller/geometry/path_builder.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 TEST_P(EntityTest, CanCreateEntity) {
69 Entity entity;
70 ASSERT_TRUE(entity.GetTransform().IsIdentity());
71 }
72
73 TEST_P(EntityTest, FilterCoverageRespectsCropRect) {
74 auto image = CreateTextureForFixture("boston.jpg");
75 auto filter = ColorFilterContents::MakeBlend(BlendMode::kSoftLight,
76 FilterInput::Make({image}));
77
78 // Without the crop rect (default behavior).
79 {
80 auto actual = filter->GetCoverage({});
81 auto expected = Rect::MakeSize(image->GetSize());
82
83 ASSERT_TRUE(actual.has_value());
84 ASSERT_RECT_NEAR(actual.value(), expected);
85 }
86
87 // With the crop rect.
88 {
89 auto expected = Rect::MakeLTRB(50, 50, 100, 100);
90 filter->SetCoverageHint(expected);
91 auto actual = filter->GetCoverage({});
92
93 ASSERT_TRUE(actual.has_value());
94 ASSERT_RECT_NEAR(actual.value(), expected);
95 }
96 }
97
98 TEST_P(EntityTest, GeometryBoundsAreTransformed) {
99 auto geometry = Geometry::MakeRect(Rect::MakeXYWH(100, 100, 100, 100));
100 auto transform = Matrix::MakeScale({2.0, 2.0, 2.0});
101
102 ASSERT_RECT_NEAR(geometry->GetCoverage(transform).value(),
103 Rect::MakeXYWH(200, 200, 200, 200));
104 }
105
106 TEST_P(EntityTest, ThreeStrokesInOnePath) {
107 Path path = PathBuilder{}
108 .MoveTo({100, 100})
109 .LineTo({100, 200})
110 .MoveTo({100, 300})
111 .LineTo({100, 400})
112 .MoveTo({100, 500})
113 .LineTo({100, 600})
114 .TakePath();
115
116 Entity entity;
117 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
118 auto contents = std::make_unique<SolidColorContents>();
119
120 std::unique_ptr<Geometry> geom = Geometry::MakeStrokePath(path, 5.0);
121 contents->SetGeometry(geom.get());
122 contents->SetColor(Color::Red());
123 entity.SetContents(std::move(contents));
124 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
125 }
126
127 TEST_P(EntityTest, StrokeWithTextureContents) {
128 auto bridge = CreateTextureForFixture("bay_bridge.jpg");
129 Path path = PathBuilder{}
130 .MoveTo({100, 100})
131 .LineTo({100, 200})
132 .MoveTo({100, 300})
133 .LineTo({100, 400})
134 .MoveTo({100, 500})
135 .LineTo({100, 600})
136 .TakePath();
137
138 Entity entity;
139 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
140 auto contents = std::make_unique<TiledTextureContents>();
141 std::unique_ptr<Geometry> geom = Geometry::MakeStrokePath(path, 100.0);
142 contents->SetGeometry(geom.get());
143 contents->SetTexture(bridge);
144 contents->SetTileModes(Entity::TileMode::kClamp, Entity::TileMode::kClamp);
145 entity.SetContents(std::move(contents));
146 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
147 }
148
149 TEST_P(EntityTest, TriangleInsideASquare) {
150 auto callback = [&](ContentContext& context, RenderPass& pass) {
151 Point offset(100, 100);
152
153 PlaygroundPoint point_a(Point(10, 10) + offset, 20, Color::White());
154 Point a = DrawPlaygroundPoint(point_a);
155 PlaygroundPoint point_b(Point(210, 10) + offset, 20, Color::White());
156 Point b = DrawPlaygroundPoint(point_b);
157 PlaygroundPoint point_c(Point(210, 210) + offset, 20, Color::White());
158 Point c = DrawPlaygroundPoint(point_c);
159 PlaygroundPoint point_d(Point(10, 210) + offset, 20, Color::White());
160 Point d = DrawPlaygroundPoint(point_d);
161 PlaygroundPoint point_e(Point(50, 50) + offset, 20, Color::White());
162 Point e = DrawPlaygroundPoint(point_e);
163 PlaygroundPoint point_f(Point(100, 50) + offset, 20, Color::White());
164 Point f = DrawPlaygroundPoint(point_f);
165 PlaygroundPoint point_g(Point(50, 150) + offset, 20, Color::White());
166 Point g = DrawPlaygroundPoint(point_g);
167 Path path = PathBuilder{}
168 .MoveTo(a)
169 .LineTo(b)
170 .LineTo(c)
171 .LineTo(d)
172 .Close()
173 .MoveTo(e)
174 .LineTo(f)
175 .LineTo(g)
176 .Close()
177 .TakePath();
178
179 Entity entity;
180 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
181 auto contents = std::make_unique<SolidColorContents>();
182 std::unique_ptr<Geometry> geom = Geometry::MakeStrokePath(path, 20.0);
183 contents->SetGeometry(geom.get());
184 contents->SetColor(Color::Red());
185 entity.SetContents(std::move(contents));
186
187 return entity.Render(context, pass);
188 };
189 ASSERT_TRUE(OpenPlaygroundHere(callback));
190 }
191
192 TEST_P(EntityTest, StrokeCapAndJoinTest) {
193 const Point padding(300, 250);
194 const Point margin(140, 180);
195
196 auto callback = [&](ContentContext& context, RenderPass& pass) {
197 // Slightly above sqrt(2) by default, so that right angles are just below
198 // the limit and acute angles are over the limit (causing them to get
199 // beveled).
200 static Scalar miter_limit = 1.41421357;
201 static Scalar width = 30;
202
203 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
204 {
205 ImGui::SliderFloat("Miter limit", &miter_limit, 0, 30);
206 ImGui::SliderFloat("Stroke width", &width, 0, 100);
207 if (ImGui::Button("Reset")) {
208 miter_limit = 1.41421357;
209 width = 30;
210 }
211 }
212 ImGui::End();
213
214 auto world_matrix = Matrix::MakeScale(GetContentScale());
215 auto render_path = [width = width, &context, &pass, &world_matrix](
216 const Path& path, Cap cap, Join join) {
217 auto contents = std::make_unique<SolidColorContents>();
218 std::unique_ptr<Geometry> geom =
219 Geometry::MakeStrokePath(path, width, miter_limit, cap, join);
220 contents->SetGeometry(geom.get());
221 contents->SetColor(Color::Red());
222
223 Entity entity;
224 entity.SetTransform(world_matrix);
225 entity.SetContents(std::move(contents));
226
227 auto coverage = entity.GetCoverage();
228 if (coverage.has_value()) {
229 auto bounds_contents = std::make_unique<SolidColorContents>();
230
231 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(
232 PathBuilder{}.AddRect(entity.GetCoverage().value()).TakePath());
233
234 bounds_contents->SetGeometry(geom.get());
235 bounds_contents->SetColor(Color::Green().WithAlpha(0.5));
236 Entity bounds_entity;
237 bounds_entity.SetContents(std::move(bounds_contents));
238 bounds_entity.Render(context, pass);
239 }
240
241 entity.Render(context, pass);
242 };
243
244 const Point a_def(0, 0), b_def(0, 100), c_def(150, 0), d_def(150, -100),
245 e_def(75, 75);
246 const Scalar r = 30;
247 // Cap::kButt demo.
248 {
249 Point off = Point(0, 0) * padding + margin;
250 PlaygroundPoint point_a(off + a_def, r, Color::Black());
251 PlaygroundPoint point_b(off + b_def, r, Color::White());
252 auto [a, b] = DrawPlaygroundLine(point_a, point_b);
253 PlaygroundPoint point_c(off + c_def, r, Color::Black());
254 PlaygroundPoint point_d(off + d_def, r, Color::White());
255 auto [c, d] = DrawPlaygroundLine(point_c, point_d);
256 render_path(PathBuilder{}.AddCubicCurve(a, b, d, c).TakePath(),
257 Cap::kButt, Join::kBevel);
258 }
259
260 // Cap::kSquare demo.
261 {
262 Point off = Point(1, 0) * padding + margin;
263 PlaygroundPoint point_a(off + a_def, r, Color::Black());
264 PlaygroundPoint point_b(off + b_def, r, Color::White());
265 auto [a, b] = DrawPlaygroundLine(point_a, point_b);
266 PlaygroundPoint point_c(off + c_def, r, Color::Black());
267 PlaygroundPoint point_d(off + d_def, r, Color::White());
268 auto [c, d] = DrawPlaygroundLine(point_c, point_d);
269 render_path(PathBuilder{}.AddCubicCurve(a, b, d, c).TakePath(),
270 Cap::kSquare, Join::kBevel);
271 }
272
273 // Cap::kRound demo.
274 {
275 Point off = Point(2, 0) * padding + margin;
276 PlaygroundPoint point_a(off + a_def, r, Color::Black());
277 PlaygroundPoint point_b(off + b_def, r, Color::White());
278 auto [a, b] = DrawPlaygroundLine(point_a, point_b);
279 PlaygroundPoint point_c(off + c_def, r, Color::Black());
280 PlaygroundPoint point_d(off + d_def, r, Color::White());
281 auto [c, d] = DrawPlaygroundLine(point_c, point_d);
282 render_path(PathBuilder{}.AddCubicCurve(a, b, d, c).TakePath(),
283 Cap::kRound, Join::kBevel);
284 }
285
286 // Join::kBevel demo.
287 {
288 Point off = Point(0, 1) * padding + margin;
289 PlaygroundPoint point_a = PlaygroundPoint(off + a_def, r, Color::White());
290 PlaygroundPoint point_b = PlaygroundPoint(off + e_def, r, Color::White());
291 PlaygroundPoint point_c = PlaygroundPoint(off + c_def, r, Color::White());
292 Point a = DrawPlaygroundPoint(point_a);
293 Point b = DrawPlaygroundPoint(point_b);
294 Point c = DrawPlaygroundPoint(point_c);
295 render_path(
296 PathBuilder{}.MoveTo(a).LineTo(b).LineTo(c).Close().TakePath(),
297 Cap::kButt, Join::kBevel);
298 }
299
300 // Join::kMiter demo.
301 {
302 Point off = Point(1, 1) * padding + margin;
303 PlaygroundPoint point_a(off + a_def, r, Color::White());
304 PlaygroundPoint point_b(off + e_def, r, Color::White());
305 PlaygroundPoint point_c(off + c_def, r, Color::White());
306 Point a = DrawPlaygroundPoint(point_a);
307 Point b = DrawPlaygroundPoint(point_b);
308 Point c = DrawPlaygroundPoint(point_c);
309 render_path(
310 PathBuilder{}.MoveTo(a).LineTo(b).LineTo(c).Close().TakePath(),
311 Cap::kButt, Join::kMiter);
312 }
313
314 // Join::kRound demo.
315 {
316 Point off = Point(2, 1) * padding + margin;
317 PlaygroundPoint point_a(off + a_def, r, Color::White());
318 PlaygroundPoint point_b(off + e_def, r, Color::White());
319 PlaygroundPoint point_c(off + c_def, r, Color::White());
320 Point a = DrawPlaygroundPoint(point_a);
321 Point b = DrawPlaygroundPoint(point_b);
322 Point c = DrawPlaygroundPoint(point_c);
323 render_path(
324 PathBuilder{}.MoveTo(a).LineTo(b).LineTo(c).Close().TakePath(),
325 Cap::kButt, Join::kRound);
326 }
327
328 return true;
329 };
330 ASSERT_TRUE(OpenPlaygroundHere(callback));
331 }
332
333 TEST_P(EntityTest, CubicCurveTest) {
334 // Compare with https://fiddle.skia.org/c/b3625f26122c9de7afe7794fcf25ead3
335 Path path =
336 PathBuilder{}
337 .MoveTo({237.164, 125.003})
338 .CubicCurveTo({236.709, 125.184}, {236.262, 125.358},
339 {235.81, 125.538})
340 .CubicCurveTo({235.413, 125.68}, {234.994, 125.832},
341 {234.592, 125.977})
342 .CubicCurveTo({234.592, 125.977}, {234.591, 125.977},
343 {234.59, 125.977})
344 .CubicCurveTo({222.206, 130.435}, {207.708, 135.753},
345 {192.381, 141.429})
346 .CubicCurveTo({162.77, 151.336}, {122.17, 156.894}, {84.1123, 160})
347 .Close()
348 .TakePath();
349 Entity entity;
350 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
351
352 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
353
354 auto contents = std::make_shared<SolidColorContents>();
355 contents->SetColor(Color::Red());
356 contents->SetGeometry(geom.get());
357
358 entity.SetContents(contents);
359 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
360 }
361
362 TEST_P(EntityTest, CanDrawCorrectlyWithRotatedTransform) {
363 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
364 const char* input_axis[] = {"X", "Y", "Z"};
365 static int rotation_axis_index = 0;
366 static float rotation = 0;
367 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
368 ImGui::SliderFloat("Rotation", &rotation, -kPi, kPi);
369 ImGui::Combo("Rotation Axis", &rotation_axis_index, input_axis,
370 sizeof(input_axis) / sizeof(char*));
371 Matrix rotation_matrix;
372 switch (rotation_axis_index) {
373 case 0:
374 rotation_matrix = Matrix::MakeRotationX(Radians(rotation));
375 break;
376 case 1:
377 rotation_matrix = Matrix::MakeRotationY(Radians(rotation));
378 break;
379 case 2:
380 rotation_matrix = Matrix::MakeRotationZ(Radians(rotation));
381 break;
382 default:
383 rotation_matrix = Matrix{};
384 break;
385 }
386
387 if (ImGui::Button("Reset")) {
388 rotation = 0;
389 }
390 ImGui::End();
391 Matrix current_transform =
392 Matrix::MakeScale(GetContentScale())
393 .MakeTranslation(
394 Vector3(Point(pass.GetRenderTargetSize().width / 2.0,
395 pass.GetRenderTargetSize().height / 2.0)));
396 Matrix result_transform = current_transform * rotation_matrix;
397 Path path =
398 PathBuilder{}.AddRect(Rect::MakeXYWH(-300, -400, 600, 800)).TakePath();
399
400 Entity entity;
401 entity.SetTransform(result_transform);
402
403 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
404
405 auto contents = std::make_shared<SolidColorContents>();
406 contents->SetColor(Color::Red());
407 contents->SetGeometry(geom.get());
408
409 entity.SetContents(contents);
410 return entity.Render(context, pass);
411 };
412 ASSERT_TRUE(OpenPlaygroundHere(callback));
413 }
414
415 TEST_P(EntityTest, CubicCurveAndOverlapTest) {
416 // Compare with https://fiddle.skia.org/c/7a05a3e186c65a8dfb732f68020aae06
417 Path path =
418 PathBuilder{}
419 .MoveTo({359.934, 96.6335})
420 .CubicCurveTo({358.189, 96.7055}, {356.436, 96.7908},
421 {354.673, 96.8895})
422 .CubicCurveTo({354.571, 96.8953}, {354.469, 96.9016},
423 {354.367, 96.9075})
424 .CubicCurveTo({352.672, 97.0038}, {350.969, 97.113},
425 {349.259, 97.2355})
426 .CubicCurveTo({349.048, 97.2506}, {348.836, 97.2678},
427 {348.625, 97.2834})
428 .CubicCurveTo({347.019, 97.4014}, {345.407, 97.5299},
429 {343.789, 97.6722})
430 .CubicCurveTo({343.428, 97.704}, {343.065, 97.7402},
431 {342.703, 97.7734})
432 .CubicCurveTo({341.221, 97.9086}, {339.736, 98.0505},
433 {338.246, 98.207})
434 .CubicCurveTo({337.702, 98.2642}, {337.156, 98.3292},
435 {336.612, 98.3894})
436 .CubicCurveTo({335.284, 98.5356}, {333.956, 98.6837},
437 {332.623, 98.8476})
438 .CubicCurveTo({332.495, 98.8635}, {332.366, 98.8818},
439 {332.237, 98.8982})
440 .LineTo({332.237, 102.601})
441 .LineTo({321.778, 102.601})
442 .LineTo({321.778, 100.382})
443 .CubicCurveTo({321.572, 100.413}, {321.367, 100.442},
444 {321.161, 100.476})
445 .CubicCurveTo({319.22, 100.79}, {317.277, 101.123},
446 {315.332, 101.479})
447 .CubicCurveTo({315.322, 101.481}, {315.311, 101.482},
448 {315.301, 101.484})
449 .LineTo({310.017, 105.94})
450 .LineTo({309.779, 105.427})
451 .LineTo({314.403, 101.651})
452 .CubicCurveTo({314.391, 101.653}, {314.379, 101.656},
453 {314.368, 101.658})
454 .CubicCurveTo({312.528, 102.001}, {310.687, 102.366},
455 {308.846, 102.748})
456 .CubicCurveTo({307.85, 102.955}, {306.855, 103.182}, {305.859, 103.4})
457 .CubicCurveTo({305.048, 103.579}, {304.236, 103.75},
458 {303.425, 103.936})
459 .LineTo({299.105, 107.578})
460 .LineTo({298.867, 107.065})
461 .LineTo({302.394, 104.185})
462 .LineTo({302.412, 104.171})
463 .CubicCurveTo({301.388, 104.409}, {300.366, 104.67},
464 {299.344, 104.921})
465 .CubicCurveTo({298.618, 105.1}, {297.89, 105.269}, {297.165, 105.455})
466 .CubicCurveTo({295.262, 105.94}, {293.36, 106.445},
467 {291.462, 106.979})
468 .CubicCurveTo({291.132, 107.072}, {290.802, 107.163},
469 {290.471, 107.257})
470 .CubicCurveTo({289.463, 107.544}, {288.455, 107.839},
471 {287.449, 108.139})
472 .CubicCurveTo({286.476, 108.431}, {285.506, 108.73},
473 {284.536, 109.035})
474 .CubicCurveTo({283.674, 109.304}, {282.812, 109.579},
475 {281.952, 109.859})
476 .CubicCurveTo({281.177, 110.112}, {280.406, 110.377},
477 {279.633, 110.638})
478 .CubicCurveTo({278.458, 111.037}, {277.256, 111.449},
479 {276.803, 111.607})
480 .CubicCurveTo({276.76, 111.622}, {276.716, 111.637},
481 {276.672, 111.653})
482 .CubicCurveTo({275.017, 112.239}, {273.365, 112.836},
483 {271.721, 113.463})
484 .LineTo({271.717, 113.449})
485 .CubicCurveTo({271.496, 113.496}, {271.238, 113.559},
486 {270.963, 113.628})
487 .CubicCurveTo({270.893, 113.645}, {270.822, 113.663},
488 {270.748, 113.682})
489 .CubicCurveTo({270.468, 113.755}, {270.169, 113.834},
490 {269.839, 113.926})
491 .CubicCurveTo({269.789, 113.94}, {269.732, 113.957},
492 {269.681, 113.972})
493 .CubicCurveTo({269.391, 114.053}, {269.081, 114.143},
494 {268.756, 114.239})
495 .CubicCurveTo({268.628, 114.276}, {268.5, 114.314},
496 {268.367, 114.354})
497 .CubicCurveTo({268.172, 114.412}, {267.959, 114.478},
498 {267.752, 114.54})
499 .CubicCurveTo({263.349, 115.964}, {258.058, 117.695},
500 {253.564, 119.252})
501 .CubicCurveTo({253.556, 119.255}, {253.547, 119.258},
502 {253.538, 119.261})
503 .CubicCurveTo({251.844, 119.849}, {250.056, 120.474},
504 {248.189, 121.131})
505 .CubicCurveTo({248, 121.197}, {247.812, 121.264}, {247.621, 121.331})
506 .CubicCurveTo({247.079, 121.522}, {246.531, 121.715},
507 {245.975, 121.912})
508 .CubicCurveTo({245.554, 122.06}, {245.126, 122.212},
509 {244.698, 122.364})
510 .CubicCurveTo({244.071, 122.586}, {243.437, 122.811},
511 {242.794, 123.04})
512 .CubicCurveTo({242.189, 123.255}, {241.58, 123.472},
513 {240.961, 123.693})
514 .CubicCurveTo({240.659, 123.801}, {240.357, 123.909},
515 {240.052, 124.018})
516 .CubicCurveTo({239.12, 124.351}, {238.18, 124.687}, {237.22, 125.032})
517 .LineTo({237.164, 125.003})
518 .CubicCurveTo({236.709, 125.184}, {236.262, 125.358},
519 {235.81, 125.538})
520 .CubicCurveTo({235.413, 125.68}, {234.994, 125.832},
521 {234.592, 125.977})
522 .CubicCurveTo({234.592, 125.977}, {234.591, 125.977},
523 {234.59, 125.977})
524 .CubicCurveTo({222.206, 130.435}, {207.708, 135.753},
525 {192.381, 141.429})
526 .CubicCurveTo({162.77, 151.336}, {122.17, 156.894}, {84.1123, 160})
527 .LineTo({360, 160})
528 .LineTo({360, 119.256})
529 .LineTo({360, 106.332})
530 .LineTo({360, 96.6307})
531 .CubicCurveTo({359.978, 96.6317}, {359.956, 96.6326},
532 {359.934, 96.6335})
533 .Close()
534 .MoveTo({337.336, 124.143})
535 .CubicCurveTo({337.274, 122.359}, {338.903, 121.511},
536 {338.903, 121.511})
537 .CubicCurveTo({338.903, 121.511}, {338.96, 123.303},
538 {337.336, 124.143})
539 .Close()
540 .MoveTo({340.082, 121.849})
541 .CubicCurveTo({340.074, 121.917}, {340.062, 121.992},
542 {340.046, 122.075})
543 .CubicCurveTo({340.039, 122.109}, {340.031, 122.142},
544 {340.023, 122.177})
545 .CubicCurveTo({340.005, 122.26}, {339.98, 122.346},
546 {339.952, 122.437})
547 .CubicCurveTo({339.941, 122.473}, {339.931, 122.507},
548 {339.918, 122.544})
549 .CubicCurveTo({339.873, 122.672}, {339.819, 122.804},
550 {339.75, 122.938})
551 .CubicCurveTo({339.747, 122.944}, {339.743, 122.949},
552 {339.74, 122.955})
553 .CubicCurveTo({339.674, 123.08}, {339.593, 123.205},
554 {339.501, 123.328})
555 .CubicCurveTo({339.473, 123.366}, {339.441, 123.401},
556 {339.41, 123.438})
557 .CubicCurveTo({339.332, 123.534}, {339.243, 123.625},
558 {339.145, 123.714})
559 .CubicCurveTo({339.105, 123.75}, {339.068, 123.786},
560 {339.025, 123.821})
561 .CubicCurveTo({338.881, 123.937}, {338.724, 124.048},
562 {338.539, 124.143})
563 .CubicCurveTo({338.532, 123.959}, {338.554, 123.79},
564 {338.58, 123.626})
565 .CubicCurveTo({338.58, 123.625}, {338.58, 123.625}, {338.58, 123.625})
566 .CubicCurveTo({338.607, 123.455}, {338.65, 123.299},
567 {338.704, 123.151})
568 .CubicCurveTo({338.708, 123.14}, {338.71, 123.127},
569 {338.714, 123.117})
570 .CubicCurveTo({338.769, 122.971}, {338.833, 122.838},
571 {338.905, 122.712})
572 .CubicCurveTo({338.911, 122.702}, {338.916, 122.69200000000001},
573 {338.922, 122.682})
574 .CubicCurveTo({338.996, 122.557}, {339.072, 122.444},
575 {339.155, 122.34})
576 .CubicCurveTo({339.161, 122.333}, {339.166, 122.326},
577 {339.172, 122.319})
578 .CubicCurveTo({339.256, 122.215}, {339.339, 122.12},
579 {339.425, 122.037})
580 .CubicCurveTo({339.428, 122.033}, {339.431, 122.03},
581 {339.435, 122.027})
582 .CubicCurveTo({339.785, 121.687}, {340.106, 121.511},
583 {340.106, 121.511})
584 .CubicCurveTo({340.106, 121.511}, {340.107, 121.645},
585 {340.082, 121.849})
586 .Close()
587 .MoveTo({340.678, 113.245})
588 .CubicCurveTo({340.594, 113.488}, {340.356, 113.655},
589 {340.135, 113.775})
590 .CubicCurveTo({339.817, 113.948}, {339.465, 114.059},
591 {339.115, 114.151})
592 .CubicCurveTo({338.251, 114.379}, {337.34, 114.516},
593 {336.448, 114.516})
594 .CubicCurveTo({335.761, 114.516}, {335.072, 114.527},
595 {334.384, 114.513})
596 .CubicCurveTo({334.125, 114.508}, {333.862, 114.462},
597 {333.605, 114.424})
598 .CubicCurveTo({332.865, 114.318}, {332.096, 114.184},
599 {331.41, 113.883})
600 .CubicCurveTo({330.979, 113.695}, {330.442, 113.34},
601 {330.672, 112.813})
602 .CubicCurveTo({331.135, 111.755}, {333.219, 112.946},
603 {334.526, 113.833})
604 .CubicCurveTo({334.54, 113.816}, {334.554, 113.8}, {334.569, 113.784})
605 .CubicCurveTo({333.38, 112.708}, {331.749, 110.985},
606 {332.76, 110.402})
607 .CubicCurveTo({333.769, 109.82}, {334.713, 111.93},
608 {335.228, 113.395})
609 .CubicCurveTo({334.915, 111.889}, {334.59, 109.636},
610 {335.661, 109.592})
611 .CubicCurveTo({336.733, 109.636}, {336.408, 111.889},
612 {336.07, 113.389})
613 .CubicCurveTo({336.609, 111.93}, {337.553, 109.82},
614 {338.563, 110.402})
615 .CubicCurveTo({339.574, 110.984}, {337.942, 112.708},
616 {336.753, 113.784})
617 .CubicCurveTo({336.768, 113.8}, {336.782, 113.816},
618 {336.796, 113.833})
619 .CubicCurveTo({338.104, 112.946}, {340.187, 111.755},
620 {340.65, 112.813})
621 .CubicCurveTo({340.71, 112.95}, {340.728, 113.102},
622 {340.678, 113.245})
623 .Close()
624 .MoveTo({346.357, 106.771})
625 .CubicCurveTo({346.295, 104.987}, {347.924, 104.139},
626 {347.924, 104.139})
627 .CubicCurveTo({347.924, 104.139}, {347.982, 105.931},
628 {346.357, 106.771})
629 .Close()
630 .MoveTo({347.56, 106.771})
631 .CubicCurveTo({347.498, 104.987}, {349.127, 104.139},
632 {349.127, 104.139})
633 .CubicCurveTo({349.127, 104.139}, {349.185, 105.931},
634 {347.56, 106.771})
635 .Close()
636 .TakePath();
637 Entity entity;
638 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
639
640 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
641
642 auto contents = std::make_shared<SolidColorContents>();
643 contents->SetColor(Color::Red());
644 contents->SetGeometry(geom.get());
645
646 entity.SetContents(contents);
647 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
648 }
649
650 TEST_P(EntityTest, SolidColorContentsStrokeSetStrokeCapsAndJoins) {
651 {
652 auto geometry = Geometry::MakeStrokePath(Path{});
653 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
654 // Defaults.
655 ASSERT_EQ(path_geometry->GetStrokeCap(), Cap::kButt);
656 ASSERT_EQ(path_geometry->GetStrokeJoin(), Join::kMiter);
657 }
658
659 {
660 auto geometry = Geometry::MakeStrokePath(Path{}, 1.0, 4.0, Cap::kSquare);
661 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
662 ASSERT_EQ(path_geometry->GetStrokeCap(), Cap::kSquare);
663 }
664
665 {
666 auto geometry = Geometry::MakeStrokePath(Path{}, 1.0, 4.0, Cap::kRound);
667 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
668 ASSERT_EQ(path_geometry->GetStrokeCap(), Cap::kRound);
669 }
670 }
671
672 TEST_P(EntityTest, SolidColorContentsStrokeSetMiterLimit) {
673 {
674 auto geometry = Geometry::MakeStrokePath(Path{});
675 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
676 ASSERT_FLOAT_EQ(path_geometry->GetMiterLimit(), 4);
677 }
678
679 {
680 auto geometry = Geometry::MakeStrokePath(Path{}, 1.0,
681 /*miter_limit=*/8.0);
682 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
683 ASSERT_FLOAT_EQ(path_geometry->GetMiterLimit(), 8);
684 }
685
686 {
687 auto geometry = Geometry::MakeStrokePath(Path{}, 1.0,
688 /*miter_limit=*/-1.0);
689 auto path_geometry = static_cast<StrokePathGeometry*>(geometry.get());
690 ASSERT_FLOAT_EQ(path_geometry->GetMiterLimit(), 4);
691 }
692 }
693
694 TEST_P(EntityTest, BlendingModeOptions) {
695 std::vector<const char*> blend_mode_names;
696 std::vector<BlendMode> blend_mode_values;
697 {
698 // Force an exhausiveness check with a switch. When adding blend modes,
699 // update this switch with a new name/value to make it selectable in the
700 // test GUI.
701
702 const BlendMode b{};
703 static_assert(b == BlendMode::kClear); // Ensure the first item in
704 // the switch is the first
705 // item in the enum.
706 static_assert(Entity::kLastPipelineBlendMode == BlendMode::kModulate);
707 switch (b) {
708 case BlendMode::kClear:
709 blend_mode_names.push_back("Clear");
710 blend_mode_values.push_back(BlendMode::kClear);
711 case BlendMode::kSource:
712 blend_mode_names.push_back("Source");
713 blend_mode_values.push_back(BlendMode::kSource);
714 case BlendMode::kDestination:
715 blend_mode_names.push_back("Destination");
716 blend_mode_values.push_back(BlendMode::kDestination);
717 case BlendMode::kSourceOver:
718 blend_mode_names.push_back("SourceOver");
719 blend_mode_values.push_back(BlendMode::kSourceOver);
720 case BlendMode::kDestinationOver:
721 blend_mode_names.push_back("DestinationOver");
722 blend_mode_values.push_back(BlendMode::kDestinationOver);
723 case BlendMode::kSourceIn:
724 blend_mode_names.push_back("SourceIn");
725 blend_mode_values.push_back(BlendMode::kSourceIn);
726 case BlendMode::kDestinationIn:
727 blend_mode_names.push_back("DestinationIn");
728 blend_mode_values.push_back(BlendMode::kDestinationIn);
729 case BlendMode::kSourceOut:
730 blend_mode_names.push_back("SourceOut");
731 blend_mode_values.push_back(BlendMode::kSourceOut);
732 case BlendMode::kDestinationOut:
733 blend_mode_names.push_back("DestinationOut");
734 blend_mode_values.push_back(BlendMode::kDestinationOut);
735 case BlendMode::kSourceATop:
736 blend_mode_names.push_back("SourceATop");
737 blend_mode_values.push_back(BlendMode::kSourceATop);
738 case BlendMode::kDestinationATop:
739 blend_mode_names.push_back("DestinationATop");
740 blend_mode_values.push_back(BlendMode::kDestinationATop);
741 case BlendMode::kXor:
742 blend_mode_names.push_back("Xor");
743 blend_mode_values.push_back(BlendMode::kXor);
744 case BlendMode::kPlus:
745 blend_mode_names.push_back("Plus");
746 blend_mode_values.push_back(BlendMode::kPlus);
747 case BlendMode::kModulate:
748 blend_mode_names.push_back("Modulate");
749 blend_mode_values.push_back(BlendMode::kModulate);
750 };
751 }
752
753 auto callback = [&](ContentContext& context, RenderPass& pass) {
754 auto world_matrix = Matrix::MakeScale(GetContentScale());
755 auto draw_rect = [&context, &pass, &world_matrix](
756 Rect rect, Color color, BlendMode blend_mode) -> bool {
757 using VS = SolidFillPipeline::VertexShader;
758 using FS = SolidFillPipeline::FragmentShader;
759
760 VertexBufferBuilder<VS::PerVertexData> vtx_builder;
761 {
762 auto r = rect.GetLTRB();
763 vtx_builder.AddVertices({
764 {Point(r[0], r[1])},
765 {Point(r[2], r[1])},
766 {Point(r[2], r[3])},
767 {Point(r[0], r[1])},
768 {Point(r[2], r[3])},
769 {Point(r[0], r[3])},
770 });
771 }
772
773 pass.SetCommandLabel("Blended Rectangle");
774 auto options = OptionsFromPass(pass);
775 options.blend_mode = blend_mode;
776 options.primitive_type = PrimitiveType::kTriangle;
777 pass.SetPipeline(context.GetSolidFillPipeline(options));
778 pass.SetVertexBuffer(
779 vtx_builder.CreateVertexBuffer(context.GetTransientsBuffer()));
780
781 VS::FrameInfo frame_info;
782 frame_info.mvp = pass.GetOrthographicTransform() * world_matrix;
783 VS::BindFrameInfo(
784 pass, context.GetTransientsBuffer().EmplaceUniform(frame_info));
785 FS::FragInfo frag_info;
786 frag_info.color = color.Premultiply();
787 FS::BindFragInfo(
788 pass, context.GetTransientsBuffer().EmplaceUniform(frame_info));
789 return pass.Draw().ok();
790 };
791
792 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
793 static Color color1(1, 0, 0, 0.5), color2(0, 1, 0, 0.5);
794 ImGui::ColorEdit4("Color 1", reinterpret_cast<float*>(&color1));
795 ImGui::ColorEdit4("Color 2", reinterpret_cast<float*>(&color2));
796 static int current_blend_index = 3;
797 ImGui::ListBox("Blending mode", &current_blend_index,
798 blend_mode_names.data(), blend_mode_names.size());
799 ImGui::End();
800
801 BlendMode selected_mode = blend_mode_values[current_blend_index];
802
803 Point a, b, c, d;
804 PlaygroundPoint point_a(Point(400, 100), 20, Color::White());
805 PlaygroundPoint point_b(Point(200, 300), 20, Color::White());
806 std::tie(a, b) = DrawPlaygroundLine(point_a, point_b);
807 PlaygroundPoint point_c(Point(470, 190), 20, Color::White());
808 PlaygroundPoint point_d(Point(270, 390), 20, Color::White());
809 std::tie(c, d) = DrawPlaygroundLine(point_c, point_d);
810
811 bool result = true;
812 result = result &&
813 draw_rect(Rect::MakeXYWH(0, 0, pass.GetRenderTargetSize().width,
814 pass.GetRenderTargetSize().height),
815 Color(), BlendMode::kClear);
816 result = result && draw_rect(Rect::MakeLTRB(a.x, a.y, b.x, b.y), color1,
817 BlendMode::kSourceOver);
818 result = result && draw_rect(Rect::MakeLTRB(c.x, c.y, d.x, d.y), color2,
819 selected_mode);
820 return result;
821 };
822 ASSERT_TRUE(OpenPlaygroundHere(callback));
823 }
824
825 TEST_P(EntityTest, BezierCircleScaled) {
826 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
827 static float scale = 20;
828
829 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
830 ImGui::SliderFloat("Scale", &scale, 1, 100);
831 ImGui::End();
832
833 Entity entity;
834 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
835 auto path = PathBuilder{}
836 .MoveTo({97.325, 34.818})
837 .CubicCurveTo({98.50862885295136, 34.81812293973836},
838 {99.46822048142015, 33.85863261475589},
839 {99.46822048142015, 32.67499810206613})
840 .CubicCurveTo({99.46822048142015, 31.491363589376355},
841 {98.50862885295136, 30.53187326439389},
842 {97.32499434685802, 30.531998226542708})
843 .CubicCurveTo({96.14153655073771, 30.532123170035373},
844 {95.18222070648729, 31.491540299350355},
845 {95.18222070648729, 32.67499810206613})
846 .CubicCurveTo({95.18222070648729, 33.85845590478189},
847 {96.14153655073771, 34.81787303409686},
848 {97.32499434685802, 34.81799797758954})
849 .Close()
850 .TakePath();
851 entity.SetTransform(
852 Matrix::MakeScale({scale, scale, 1.0}).Translate({-90, -20, 0}));
853
854 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
855
856 auto contents = std::make_shared<SolidColorContents>();
857 contents->SetColor(Color::Red());
858 contents->SetGeometry(geom.get());
859
860 entity.SetContents(contents);
861 return entity.Render(context, pass);
862 };
863 ASSERT_TRUE(OpenPlaygroundHere(callback));
864 }
865
866 TEST_P(EntityTest, Filters) {
867 auto bridge = CreateTextureForFixture("bay_bridge.jpg");
868 auto boston = CreateTextureForFixture("boston.jpg");
869 auto kalimba = CreateTextureForFixture("kalimba.jpg");
870 ASSERT_TRUE(bridge && boston && kalimba);
871
872 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
873 auto fi_bridge = FilterInput::Make(bridge);
874 auto fi_boston = FilterInput::Make(boston);
875 auto fi_kalimba = FilterInput::Make(kalimba);
876
877 std::shared_ptr<FilterContents> blend0 = ColorFilterContents::MakeBlend(
878 BlendMode::kModulate, {fi_kalimba, fi_boston});
879
880 auto blend1 = ColorFilterContents::MakeBlend(
881 BlendMode::kScreen,
882 {FilterInput::Make(blend0), fi_bridge, fi_bridge, fi_bridge});
883
884 Entity entity;
885 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
886 Matrix::MakeTranslation({500, 300}) *
887 Matrix::MakeScale(Vector2{0.5, 0.5}));
888 entity.SetContents(blend1);
889 return entity.Render(context, pass);
890 };
891 ASSERT_TRUE(OpenPlaygroundHere(callback));
892 }
893
894 TEST_P(EntityTest, GaussianBlurFilter) {
895 auto boston =
896 CreateTextureForFixture("boston.jpg", /*enable_mipmapping=*/true);
897 ASSERT_TRUE(boston);
898
899 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
900 const char* input_type_names[] = {"Texture", "Solid Color"};
901 const char* blur_type_names[] = {"Image blur", "Mask blur"};
902 const char* pass_variation_names[] = {"New"};
903 const char* blur_style_names[] = {"Normal", "Solid", "Outer", "Inner"};
904 const char* tile_mode_names[] = {"Clamp", "Repeat", "Mirror", "Decal"};
905 const FilterContents::BlurStyle blur_styles[] = {
906 FilterContents::BlurStyle::kNormal, FilterContents::BlurStyle::kSolid,
907 FilterContents::BlurStyle::kOuter, FilterContents::BlurStyle::kInner};
908 const Entity::TileMode tile_modes[] = {
909 Entity::TileMode::kClamp, Entity::TileMode::kRepeat,
910 Entity::TileMode::kMirror, Entity::TileMode::kDecal};
911
912 // UI state.
913 static int selected_input_type = 0;
914 static Color input_color = Color::Black();
915 static int selected_blur_type = 0;
916 static int selected_pass_variation = 0;
917 static bool combined_sigma = false;
918 static float blur_amount_coarse[2] = {0, 0};
919 static float blur_amount_fine[2] = {10, 10};
920 static int selected_blur_style = 0;
921 static int selected_tile_mode = 3;
922 static Color cover_color(1, 0, 0, 0.2);
923 static Color bounds_color(0, 1, 0, 0.1);
924 static float offset[2] = {500, 400};
925 static float rotation = 0;
926 static float scale[2] = {0.65, 0.65};
927 static float skew[2] = {0, 0};
928 static float path_rect[4] = {0, 0,
929 static_cast<float>(boston->GetSize().width),
930 static_cast<float>(boston->GetSize().height)};
931
932 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
933 {
934 ImGui::Combo("Input type", &selected_input_type, input_type_names,
935 sizeof(input_type_names) / sizeof(char*));
936 if (selected_input_type == 0) {
937 ImGui::SliderFloat("Input opacity", &input_color.alpha, 0, 1);
938 } else {
939 ImGui::ColorEdit4("Input color",
940 reinterpret_cast<float*>(&input_color));
941 }
942 ImGui::Combo("Blur type", &selected_blur_type, blur_type_names,
943 sizeof(blur_type_names) / sizeof(char*));
944 if (selected_blur_type == 0) {
945 ImGui::Combo("Pass variation", &selected_pass_variation,
946 pass_variation_names,
947 sizeof(pass_variation_names) / sizeof(char*));
948 }
949 ImGui::Checkbox("Combined sigma", &combined_sigma);
950 if (combined_sigma) {
951 ImGui::SliderFloat("Sigma (coarse)", blur_amount_coarse, 0, 1000);
952 ImGui::SliderFloat("Sigma (fine)", blur_amount_fine, 0, 10);
953 blur_amount_coarse[1] = blur_amount_coarse[0];
954 blur_amount_fine[1] = blur_amount_fine[0];
955 } else {
956 ImGui::SliderFloat2("Sigma (coarse)", blur_amount_coarse, 0, 1000);
957 ImGui::SliderFloat2("Sigma (fine)", blur_amount_fine, 0, 10);
958 }
959 ImGui::Combo("Blur style", &selected_blur_style, blur_style_names,
960 sizeof(blur_style_names) / sizeof(char*));
961 ImGui::Combo("Tile mode", &selected_tile_mode, tile_mode_names,
962 sizeof(tile_mode_names) / sizeof(char*));
963 ImGui::ColorEdit4("Cover color", reinterpret_cast<float*>(&cover_color));
964 ImGui::ColorEdit4("Bounds color ",
965 reinterpret_cast<float*>(&bounds_color));
966 ImGui::SliderFloat2("Translation", offset, 0,
967 pass.GetRenderTargetSize().width);
968 ImGui::SliderFloat("Rotation", &rotation, 0, kPi * 2);
969 ImGui::SliderFloat2("Scale", scale, 0, 3);
970 ImGui::SliderFloat2("Skew", skew, -3, 3);
971 ImGui::SliderFloat4("Path XYWH", path_rect, -1000, 1000);
972 }
973 ImGui::End();
974
975 auto blur_sigma_x = Sigma{blur_amount_coarse[0] + blur_amount_fine[0]};
976 auto blur_sigma_y = Sigma{blur_amount_coarse[1] + blur_amount_fine[1]};
977
978 std::shared_ptr<Contents> input;
979 Size input_size;
980
981 auto input_rect =
982 Rect::MakeXYWH(path_rect[0], path_rect[1], path_rect[2], path_rect[3]);
983
984 std::unique_ptr<Geometry> solid_color_input;
985 if (selected_input_type == 0) {
986 auto texture = std::make_shared<TextureContents>();
987 texture->SetSourceRect(Rect::MakeSize(boston->GetSize()));
988 texture->SetDestinationRect(input_rect);
989 texture->SetTexture(boston);
990 texture->SetOpacity(input_color.alpha);
991
992 input = texture;
993 input_size = input_rect.GetSize();
994 } else {
995 auto fill = std::make_shared<SolidColorContents>();
996 fill->SetColor(input_color);
997 solid_color_input =
998 Geometry::MakeFillPath(PathBuilder{}.AddRect(input_rect).TakePath());
999
1000 fill->SetGeometry(solid_color_input.get());
1001
1002 input = fill;
1003 input_size = input_rect.GetSize();
1004 }
1005
1006 std::shared_ptr<FilterContents> blur;
1007 switch (selected_pass_variation) {
1008 case 0:
1009 blur = std::make_shared<GaussianBlurFilterContents>(
1010 blur_sigma_x.sigma, blur_sigma_y.sigma,
1011 tile_modes[selected_tile_mode], blur_styles[selected_blur_style],
1012 /*geometry=*/nullptr);
1013 blur->SetInputs({FilterInput::Make(input)});
1014 break;
1015 case 1:
1016 blur = FilterContents::MakeGaussianBlur(
1017 FilterInput::Make(input), blur_sigma_x, blur_sigma_y,
1018 tile_modes[selected_tile_mode], blur_styles[selected_blur_style]);
1019 break;
1020 };
1021 FML_CHECK(blur);
1022
1023 auto mask_blur = FilterContents::MakeBorderMaskBlur(
1024 FilterInput::Make(input), blur_sigma_x, blur_sigma_y,
1025 blur_styles[selected_blur_style]);
1026
1027 auto ctm = Matrix::MakeScale(GetContentScale()) *
1028 Matrix::MakeTranslation(Vector3(offset[0], offset[1])) *
1029 Matrix::MakeRotationZ(Radians(rotation)) *
1030 Matrix::MakeScale(Vector2(scale[0], scale[1])) *
1031 Matrix::MakeSkew(skew[0], skew[1]) *
1032 Matrix::MakeTranslation(-Point(input_size) / 2);
1033
1034 auto target_contents = selected_blur_type == 0 ? blur : mask_blur;
1035
1036 Entity entity;
1037 entity.SetContents(target_contents);
1038 entity.SetTransform(ctm);
1039
1040 entity.Render(context, pass);
1041
1042 // Renders a red "cover" rectangle that shows the original position of the
1043 // unfiltered input.
1044 Entity cover_entity;
1045 std::unique_ptr<Geometry> geom =
1046 Geometry::MakeFillPath(PathBuilder{}.AddRect(input_rect).TakePath());
1047 auto contents = std::make_shared<SolidColorContents>();
1048 contents->SetColor(cover_color);
1049 contents->SetGeometry(geom.get());
1050 cover_entity.SetContents(std::move(contents));
1051 cover_entity.SetTransform(ctm);
1052 cover_entity.Render(context, pass);
1053
1054 // Renders a green bounding rect of the target filter.
1055 Entity bounds_entity;
1056 std::optional<Rect> target_contents_coverage =
1057 target_contents->GetCoverage(entity);
1058 if (target_contents_coverage.has_value()) {
1059 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(
1060 PathBuilder{}
1061 .AddRect(target_contents->GetCoverage(entity).value())
1062 .TakePath());
1063 auto contents = std::make_shared<SolidColorContents>();
1064 contents->SetColor(bounds_color);
1065 contents->SetGeometry(geom.get());
1066
1067 bounds_entity.SetContents(contents);
1068 bounds_entity.SetTransform(Matrix());
1069 bounds_entity.Render(context, pass);
1070 }
1071
1072 return true;
1073 };
1074 ASSERT_TRUE(OpenPlaygroundHere(callback));
1075 }
1076
1077 TEST_P(EntityTest, MorphologyFilter) {
1078 auto boston = CreateTextureForFixture("boston.jpg");
1079 ASSERT_TRUE(boston);
1080
1081 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1082 const char* morphology_type_names[] = {"Dilate", "Erode"};
1083 const FilterContents::MorphType morphology_types[] = {
1084 FilterContents::MorphType::kDilate, FilterContents::MorphType::kErode};
1085 static Color input_color = Color::Black();
1086 // UI state.
1087 static int selected_morphology_type = 0;
1088 static float radius[2] = {20, 20};
1089 static Color cover_color(1, 0, 0, 0.2);
1090 static Color bounds_color(0, 1, 0, 0.1);
1091 static float offset[2] = {500, 400};
1092 static float rotation = 0;
1093 static float scale[2] = {0.65, 0.65};
1094 static float skew[2] = {0, 0};
1095 static float path_rect[4] = {0, 0,
1096 static_cast<float>(boston->GetSize().width),
1097 static_cast<float>(boston->GetSize().height)};
1098 static float effect_transform_scale = 1;
1099
1100 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
1101 {
1102 ImGui::Combo("Morphology type", &selected_morphology_type,
1103 morphology_type_names,
1104 sizeof(morphology_type_names) / sizeof(char*));
1105 ImGui::SliderFloat2("Radius", radius, 0, 200);
1106 ImGui::SliderFloat("Input opacity", &input_color.alpha, 0, 1);
1107 ImGui::ColorEdit4("Cover color", reinterpret_cast<float*>(&cover_color));
1108 ImGui::ColorEdit4("Bounds color ",
1109 reinterpret_cast<float*>(&bounds_color));
1110 ImGui::SliderFloat2("Translation", offset, 0,
1111 pass.GetRenderTargetSize().width);
1112 ImGui::SliderFloat("Rotation", &rotation, 0, kPi * 2);
1113 ImGui::SliderFloat2("Scale", scale, 0, 3);
1114 ImGui::SliderFloat2("Skew", skew, -3, 3);
1115 ImGui::SliderFloat4("Path XYWH", path_rect, -1000, 1000);
1116 ImGui::SliderFloat("Effect transform scale", &effect_transform_scale, 0,
1117 3);
1118 }
1119 ImGui::End();
1120
1121 std::shared_ptr<Contents> input;
1122 Size input_size;
1123
1124 auto input_rect =
1125 Rect::MakeXYWH(path_rect[0], path_rect[1], path_rect[2], path_rect[3]);
1126 auto texture = std::make_shared<TextureContents>();
1127 texture->SetSourceRect(Rect::MakeSize(boston->GetSize()));
1128 texture->SetDestinationRect(input_rect);
1129 texture->SetTexture(boston);
1130 texture->SetOpacity(input_color.alpha);
1131
1132 input = texture;
1133 input_size = input_rect.GetSize();
1134
1135 auto contents = FilterContents::MakeMorphology(
1136 FilterInput::Make(input), Radius{radius[0]}, Radius{radius[1]},
1137 morphology_types[selected_morphology_type]);
1138 contents->SetEffectTransform(Matrix::MakeScale(
1139 Vector2{effect_transform_scale, effect_transform_scale}));
1140
1141 auto ctm = Matrix::MakeScale(GetContentScale()) *
1142 Matrix::MakeTranslation(Vector3(offset[0], offset[1])) *
1143 Matrix::MakeRotationZ(Radians(rotation)) *
1144 Matrix::MakeScale(Vector2(scale[0], scale[1])) *
1145 Matrix::MakeSkew(skew[0], skew[1]) *
1146 Matrix::MakeTranslation(-Point(input_size) / 2);
1147
1148 Entity entity;
1149 entity.SetContents(contents);
1150 entity.SetTransform(ctm);
1151
1152 entity.Render(context, pass);
1153
1154 // Renders a red "cover" rectangle that shows the original position of the
1155 // unfiltered input.
1156 Entity cover_entity;
1157 std::unique_ptr<Geometry> geom =
1158 Geometry::MakeFillPath(PathBuilder{}.AddRect(input_rect).TakePath());
1159 auto cover_contents = std::make_shared<SolidColorContents>();
1160 cover_contents->SetColor(cover_color);
1161 cover_contents->SetGeometry(geom.get());
1162 cover_entity.SetContents(cover_contents);
1163 cover_entity.SetTransform(ctm);
1164 cover_entity.Render(context, pass);
1165
1166 // Renders a green bounding rect of the target filter.
1167 Entity bounds_entity;
1168 std::unique_ptr<Geometry> bounds_geom = Geometry::MakeFillPath(
1169 PathBuilder{}
1170 .AddRect(contents->GetCoverage(entity).value())
1171 .TakePath());
1172 auto bounds_contents = std::make_shared<SolidColorContents>();
1173 bounds_contents->SetColor(bounds_color);
1174 bounds_contents->SetGeometry(bounds_geom.get());
1175 bounds_entity.SetContents(std::move(bounds_contents));
1176 bounds_entity.SetTransform(Matrix());
1177
1178 bounds_entity.Render(context, pass);
1179
1180 return true;
1181 };
1182 ASSERT_TRUE(OpenPlaygroundHere(callback));
1183 }
1184
1185 TEST_P(EntityTest, SetBlendMode) {
1186 Entity entity;
1187 ASSERT_EQ(entity.GetBlendMode(), BlendMode::kSourceOver);
1188 entity.SetBlendMode(BlendMode::kClear);
1189 ASSERT_EQ(entity.GetBlendMode(), BlendMode::kClear);
1190 }
1191
1192 TEST_P(EntityTest, ContentsGetBoundsForEmptyPathReturnsNullopt) {
1193 Entity entity;
1194 entity.SetContents(std::make_shared<SolidColorContents>());
1195 ASSERT_FALSE(entity.GetCoverage().has_value());
1196 }
1197
1198 TEST_P(EntityTest, SolidStrokeCoverageIsCorrect) {
1199 {
1200 auto geometry = Geometry::MakeStrokePath(
1201 PathBuilder{}.AddLine({0, 0}, {10, 10}).TakePath(), 4.0, 4.0,
1202 Cap::kButt, Join::kBevel);
1203
1204 Entity entity;
1205 auto contents = std::make_unique<SolidColorContents>();
1206 contents->SetGeometry(geometry.get());
1207 contents->SetColor(Color::Black());
1208 entity.SetContents(std::move(contents));
1209 auto actual = entity.GetCoverage();
1210 auto expected = Rect::MakeLTRB(-2, -2, 12, 12);
1211
1212 ASSERT_TRUE(actual.has_value());
1213 ASSERT_RECT_NEAR(actual.value(), expected);
1214 }
1215
1216 // Cover the Cap::kSquare case.
1217 {
1218 auto geometry = Geometry::MakeStrokePath(
1219 PathBuilder{}.AddLine({0, 0}, {10, 10}).TakePath(), 4.0, 4.0,
1220 Cap::kSquare, Join::kBevel);
1221
1222 Entity entity;
1223 auto contents = std::make_unique<SolidColorContents>();
1224 contents->SetGeometry(geometry.get());
1225 contents->SetColor(Color::Black());
1226 entity.SetContents(std::move(contents));
1227 auto actual = entity.GetCoverage();
1228 auto expected =
1229 Rect::MakeLTRB(-sqrt(8), -sqrt(8), 10 + sqrt(8), 10 + sqrt(8));
1230
1231 ASSERT_TRUE(actual.has_value());
1232 ASSERT_RECT_NEAR(actual.value(), expected);
1233 }
1234
1235 // Cover the Join::kMiter case.
1236 {
1237 auto geometry = Geometry::MakeStrokePath(
1238 PathBuilder{}.AddLine({0, 0}, {10, 10}).TakePath(), 4.0, 2.0,
1239 Cap::kSquare, Join::kMiter);
1240
1241 Entity entity;
1242 auto contents = std::make_unique<SolidColorContents>();
1243 contents->SetGeometry(geometry.get());
1244 contents->SetColor(Color::Black());
1245 entity.SetContents(std::move(contents));
1246 auto actual = entity.GetCoverage();
1247 auto expected = Rect::MakeLTRB(-4, -4, 14, 14);
1248
1249 ASSERT_TRUE(actual.has_value());
1250 ASSERT_RECT_NEAR(actual.value(), expected);
1251 }
1252 }
1253
1254 TEST_P(EntityTest, BorderMaskBlurCoverageIsCorrect) {
1255 auto fill = std::make_shared<SolidColorContents>();
1256 auto geom = Geometry::MakeFillPath(
1257 PathBuilder{}.AddRect(Rect::MakeXYWH(0, 0, 300, 400)).TakePath());
1258 fill->SetGeometry(geom.get());
1259 fill->SetColor(Color::CornflowerBlue());
1260 auto border_mask_blur = FilterContents::MakeBorderMaskBlur(
1261 FilterInput::Make(fill), Radius{3}, Radius{4});
1262
1263 {
1264 Entity e;
1265 e.SetTransform(Matrix());
1266 auto actual = border_mask_blur->GetCoverage(e);
1267 auto expected = Rect::MakeXYWH(-3, -4, 306, 408);
1268 ASSERT_TRUE(actual.has_value());
1269 ASSERT_RECT_NEAR(actual.value(), expected);
1270 }
1271
1272 {
1273 Entity e;
1274 e.SetTransform(Matrix::MakeRotationZ(Radians{kPi / 4}));
1275 auto actual = border_mask_blur->GetCoverage(e);
1276 auto expected = Rect::MakeXYWH(-287.792, -4.94975, 504.874, 504.874);
1277 ASSERT_TRUE(actual.has_value());
1278 ASSERT_RECT_NEAR(actual.value(), expected);
1279 }
1280 }
1281
1282 TEST_P(EntityTest, SolidFillCoverageIsCorrect) {
1283 // No transform
1284 {
1285 auto fill = std::make_shared<SolidColorContents>();
1286 fill->SetColor(Color::CornflowerBlue());
1287 auto expected = Rect::MakeLTRB(100, 110, 200, 220);
1288 auto geom =
1289 Geometry::MakeFillPath(PathBuilder{}.AddRect(expected).TakePath());
1290 fill->SetGeometry(geom.get());
1291
1292 auto coverage = fill->GetCoverage({});
1293 ASSERT_TRUE(coverage.has_value());
1294 ASSERT_RECT_NEAR(coverage.value(), expected);
1295 }
1296
1297 // Entity transform
1298 {
1299 auto fill = std::make_shared<SolidColorContents>();
1300 auto geom = Geometry::MakeFillPath(
1301 PathBuilder{}.AddRect(Rect::MakeLTRB(100, 110, 200, 220)).TakePath());
1302 fill->SetColor(Color::CornflowerBlue());
1303 fill->SetGeometry(geom.get());
1304
1305 Entity entity;
1306 entity.SetTransform(Matrix::MakeTranslation(Vector2(4, 5)));
1307 entity.SetContents(std::move(fill));
1308
1309 auto coverage = entity.GetCoverage();
1310 auto expected = Rect::MakeLTRB(104, 115, 204, 225);
1311 ASSERT_TRUE(coverage.has_value());
1312 ASSERT_RECT_NEAR(coverage.value(), expected);
1313 }
1314
1315 // No coverage for fully transparent colors
1316 {
1317 auto fill = std::make_shared<SolidColorContents>();
1318 auto geom = Geometry::MakeFillPath(
1319 PathBuilder{}.AddRect(Rect::MakeLTRB(100, 110, 200, 220)).TakePath());
1320 fill->SetColor(Color::WhiteTransparent());
1321 fill->SetGeometry(geom.get());
1322
1323 auto coverage = fill->GetCoverage({});
1324 ASSERT_FALSE(coverage.has_value());
1325 }
1326 }
1327
1328 TEST_P(EntityTest, RRectShadowTest) {
1329 auto callback = [&](ContentContext& context, RenderPass& pass) {
1330 static Color color = Color::Red();
1331 static float corner_radius = 100;
1332 static float blur_radius = 100;
1333 static bool show_coverage = false;
1334 static Color coverage_color = Color::Green().WithAlpha(0.2);
1335
1336 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
1337 ImGui::SliderFloat("Corner radius", &corner_radius, 0, 300);
1338 ImGui::SliderFloat("Blur radius", &blur_radius, 0, 300);
1339 ImGui::ColorEdit4("Color", reinterpret_cast<Scalar*>(&color));
1340 ImGui::Checkbox("Show coverage", &show_coverage);
1341 if (show_coverage) {
1342 ImGui::ColorEdit4("Coverage color",
1343 reinterpret_cast<Scalar*>(&coverage_color));
1344 }
1345 ImGui::End();
1346
1347 PlaygroundPoint top_left_point(Point(200, 200), 30, Color::White());
1348 PlaygroundPoint bottom_right_point(Point(600, 400), 30, Color::White());
1349 auto [top_left, bottom_right] =
1350 DrawPlaygroundLine(top_left_point, bottom_right_point);
1351 auto rect =
1352 Rect::MakeLTRB(top_left.x, top_left.y, bottom_right.x, bottom_right.y);
1353
1354 auto contents = std::make_unique<SolidRRectBlurContents>();
1355 contents->SetRRect(rect, {corner_radius, corner_radius});
1356 contents->SetColor(color);
1357 contents->SetSigma(Radius(blur_radius));
1358
1359 Entity entity;
1360 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
1361 entity.SetContents(std::move(contents));
1362 entity.Render(context, pass);
1363
1364 auto coverage = entity.GetCoverage();
1365 if (show_coverage && coverage.has_value()) {
1366 auto bounds_contents = std::make_unique<SolidColorContents>();
1367 auto geom = Geometry::MakeFillPath(
1368 PathBuilder{}.AddRect(entity.GetCoverage().value()).TakePath());
1369 bounds_contents->SetGeometry(geom.get());
1370 bounds_contents->SetColor(coverage_color.Premultiply());
1371 Entity bounds_entity;
1372 bounds_entity.SetContents(std::move(bounds_contents));
1373 bounds_entity.Render(context, pass);
1374 }
1375
1376 return true;
1377 };
1378 ASSERT_TRUE(OpenPlaygroundHere(callback));
1379 }
1380
1381 TEST_P(EntityTest, ColorMatrixFilterCoverageIsCorrect) {
1382 // Set up a simple color background.
1383 auto fill = std::make_shared<SolidColorContents>();
1384 auto geom = Geometry::MakeFillPath(
1385 PathBuilder{}.AddRect(Rect::MakeXYWH(0, 0, 300, 400)).TakePath());
1386 fill->SetGeometry(geom.get());
1387 fill->SetColor(Color::Coral());
1388
1389 // Set the color matrix filter.
1390 ColorMatrix matrix = {
1391 1, 1, 1, 1, 1, //
1392 1, 1, 1, 1, 1, //
1393 1, 1, 1, 1, 1, //
1394 1, 1, 1, 1, 1, //
1395 };
1396
1397 auto filter =
1398 ColorFilterContents::MakeColorMatrix(FilterInput::Make(fill), matrix);
1399
1400 Entity e;
1401 e.SetTransform(Matrix());
1402
1403 // Confirm that the actual filter coverage matches the expected coverage.
1404 auto actual = filter->GetCoverage(e);
1405 auto expected = Rect::MakeXYWH(0, 0, 300, 400);
1406
1407 ASSERT_TRUE(actual.has_value());
1408 ASSERT_RECT_NEAR(actual.value(), expected);
1409 }
1410
1411 TEST_P(EntityTest, ColorMatrixFilterEditable) {
1412 auto bay_bridge = CreateTextureForFixture("bay_bridge.jpg");
1413 ASSERT_TRUE(bay_bridge);
1414
1415 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1416 // UI state.
1417 static ColorMatrix color_matrix = {
1418 1, 0, 0, 0, 0, //
1419 0, 3, 0, 0, 0, //
1420 0, 0, 1, 0, 0, //
1421 0, 0, 0, 1, 0, //
1422 };
1423 static float offset[2] = {500, 400};
1424 static float rotation = 0;
1425 static float scale[2] = {0.65, 0.65};
1426 static float skew[2] = {0, 0};
1427
1428 // Define the ImGui
1429 ImGui::Begin("Color Matrix", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
1430 {
1431 std::string label = "##1";
1432 for (int i = 0; i < 20; i += 5) {
1433 ImGui::InputScalarN(label.c_str(), ImGuiDataType_Float,
1434 &(color_matrix.array[i]), 5, nullptr, nullptr,
1435 "%.2f", 0);
1436 label[2]++;
1437 }
1438
1439 ImGui::SliderFloat2("Translation", &offset[0], 0,
1440 pass.GetRenderTargetSize().width);
1441 ImGui::SliderFloat("Rotation", &rotation, 0, kPi * 2);
1442 ImGui::SliderFloat2("Scale", &scale[0], 0, 3);
1443 ImGui::SliderFloat2("Skew", &skew[0], -3, 3);
1444 }
1445 ImGui::End();
1446
1447 // Set the color matrix filter.
1448 auto filter = ColorFilterContents::MakeColorMatrix(
1449 FilterInput::Make(bay_bridge), color_matrix);
1450
1451 // Define the entity with the color matrix filter.
1452 Entity entity;
1453 entity.SetTransform(
1454 Matrix::MakeScale(GetContentScale()) *
1455 Matrix::MakeTranslation(Vector3(offset[0], offset[1])) *
1456 Matrix::MakeRotationZ(Radians(rotation)) *
1457 Matrix::MakeScale(Vector2(scale[0], scale[1])) *
1458 Matrix::MakeSkew(skew[0], skew[1]) *
1459 Matrix::MakeTranslation(-Point(bay_bridge->GetSize()) / 2));
1460 entity.SetContents(filter);
1461 entity.Render(context, pass);
1462
1463 return true;
1464 };
1465
1466 ASSERT_TRUE(OpenPlaygroundHere(callback));
1467 }
1468
1469 TEST_P(EntityTest, LinearToSrgbFilterCoverageIsCorrect) {
1470 // Set up a simple color background.
1471 auto geom = Geometry::MakeFillPath(
1472 PathBuilder{}.AddRect(Rect::MakeXYWH(0, 0, 300, 400)).TakePath());
1473 auto fill = std::make_shared<SolidColorContents>();
1474 fill->SetGeometry(geom.get());
1475 fill->SetColor(Color::MintCream());
1476
1477 auto filter =
1478 ColorFilterContents::MakeLinearToSrgbFilter(FilterInput::Make(fill));
1479
1480 Entity e;
1481 e.SetTransform(Matrix());
1482
1483 // Confirm that the actual filter coverage matches the expected coverage.
1484 auto actual = filter->GetCoverage(e);
1485 auto expected = Rect::MakeXYWH(0, 0, 300, 400);
1486
1487 ASSERT_TRUE(actual.has_value());
1488 ASSERT_RECT_NEAR(actual.value(), expected);
1489 }
1490
1491 TEST_P(EntityTest, LinearToSrgbFilter) {
1492 auto image = CreateTextureForFixture("kalimba.jpg");
1493 ASSERT_TRUE(image);
1494
1495 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1496 auto filtered =
1497 ColorFilterContents::MakeLinearToSrgbFilter(FilterInput::Make(image));
1498
1499 // Define the entity that will serve as the control image as a Gaussian blur
1500 // filter with no filter at all.
1501 Entity entity_left;
1502 entity_left.SetTransform(Matrix::MakeScale(GetContentScale()) *
1503 Matrix::MakeTranslation({100, 300}) *
1504 Matrix::MakeScale(Vector2{0.5, 0.5}));
1505 auto unfiltered = FilterContents::MakeGaussianBlur(FilterInput::Make(image),
1506 Sigma{0}, Sigma{0});
1507 entity_left.SetContents(unfiltered);
1508
1509 // Define the entity that will be filtered from linear to sRGB.
1510 Entity entity_right;
1511 entity_right.SetTransform(Matrix::MakeScale(GetContentScale()) *
1512 Matrix::MakeTranslation({500, 300}) *
1513 Matrix::MakeScale(Vector2{0.5, 0.5}));
1514 entity_right.SetContents(filtered);
1515 return entity_left.Render(context, pass) &&
1516 entity_right.Render(context, pass);
1517 };
1518
1519 ASSERT_TRUE(OpenPlaygroundHere(callback));
1520 }
1521
1522 TEST_P(EntityTest, SrgbToLinearFilterCoverageIsCorrect) {
1523 // Set up a simple color background.
1524 auto fill = std::make_shared<SolidColorContents>();
1525 auto geom = Geometry::MakeFillPath(
1526 PathBuilder{}.AddRect(Rect::MakeXYWH(0, 0, 300, 400)).TakePath());
1527 fill->SetGeometry(geom.get());
1528 fill->SetColor(Color::DeepPink());
1529
1530 auto filter =
1531 ColorFilterContents::MakeSrgbToLinearFilter(FilterInput::Make(fill));
1532
1533 Entity e;
1534 e.SetTransform(Matrix());
1535
1536 // Confirm that the actual filter coverage matches the expected coverage.
1537 auto actual = filter->GetCoverage(e);
1538 auto expected = Rect::MakeXYWH(0, 0, 300, 400);
1539
1540 ASSERT_TRUE(actual.has_value());
1541 ASSERT_RECT_NEAR(actual.value(), expected);
1542 }
1543
1544 TEST_P(EntityTest, SrgbToLinearFilter) {
1545 auto image = CreateTextureForFixture("embarcadero.jpg");
1546 ASSERT_TRUE(image);
1547
1548 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1549 auto filtered =
1550 ColorFilterContents::MakeSrgbToLinearFilter(FilterInput::Make(image));
1551
1552 // Define the entity that will serve as the control image as a Gaussian blur
1553 // filter with no filter at all.
1554 Entity entity_left;
1555 entity_left.SetTransform(Matrix::MakeScale(GetContentScale()) *
1556 Matrix::MakeTranslation({100, 300}) *
1557 Matrix::MakeScale(Vector2{0.5, 0.5}));
1558 auto unfiltered = FilterContents::MakeGaussianBlur(FilterInput::Make(image),
1559 Sigma{0}, Sigma{0});
1560 entity_left.SetContents(unfiltered);
1561
1562 // Define the entity that will be filtered from sRGB to linear.
1563 Entity entity_right;
1564 entity_right.SetTransform(Matrix::MakeScale(GetContentScale()) *
1565 Matrix::MakeTranslation({500, 300}) *
1566 Matrix::MakeScale(Vector2{0.5, 0.5}));
1567 entity_right.SetContents(filtered);
1568 return entity_left.Render(context, pass) &&
1569 entity_right.Render(context, pass);
1570 };
1571
1572 ASSERT_TRUE(OpenPlaygroundHere(callback));
1573 }
1574
1575 static Vector3 RGBToYUV(Vector3 rgb, YUVColorSpace yuv_color_space) {
1576 Vector3 yuv;
1577 switch (yuv_color_space) {
1578 case YUVColorSpace::kBT601FullRange:
1579 yuv.x = rgb.x * 0.299 + rgb.y * 0.587 + rgb.z * 0.114;
1580 yuv.y = rgb.x * -0.169 + rgb.y * -0.331 + rgb.z * 0.5 + 0.5;
1581 yuv.z = rgb.x * 0.5 + rgb.y * -0.419 + rgb.z * -0.081 + 0.5;
1582 break;
1583 case YUVColorSpace::kBT601LimitedRange:
1584 yuv.x = rgb.x * 0.257 + rgb.y * 0.516 + rgb.z * 0.100 + 0.063;
1585 yuv.y = rgb.x * -0.145 + rgb.y * -0.291 + rgb.z * 0.439 + 0.5;
1586 yuv.z = rgb.x * 0.429 + rgb.y * -0.368 + rgb.z * -0.071 + 0.5;
1587 break;
1588 }
1589 return yuv;
1590 }
1591
1592 static std::vector<std::shared_ptr<Texture>> CreateTestYUVTextures(
1593 Context* context,
1594 YUVColorSpace yuv_color_space) {
1595 Vector3 red = {244.0 / 255.0, 67.0 / 255.0, 54.0 / 255.0};
1596 Vector3 green = {76.0 / 255.0, 175.0 / 255.0, 80.0 / 255.0};
1597 Vector3 blue = {33.0 / 255.0, 150.0 / 255.0, 243.0 / 255.0};
1598 Vector3 white = {1.0, 1.0, 1.0};
1599 Vector3 red_yuv = RGBToYUV(red, yuv_color_space);
1600 Vector3 green_yuv = RGBToYUV(green, yuv_color_space);
1601 Vector3 blue_yuv = RGBToYUV(blue, yuv_color_space);
1602 Vector3 white_yuv = RGBToYUV(white, yuv_color_space);
1603 std::vector<Vector3> yuvs{red_yuv, green_yuv, blue_yuv, white_yuv};
1604 std::vector<uint8_t> y_data;
1605 std::vector<uint8_t> uv_data;
1606 for (int i = 0; i < 4; i++) {
1607 auto yuv = yuvs[i];
1608 uint8_t y = std::round(yuv.x * 255.0);
1609 uint8_t u = std::round(yuv.y * 255.0);
1610 uint8_t v = std::round(yuv.z * 255.0);
1611 for (int j = 0; j < 16; j++) {
1612 y_data.push_back(y);
1613 }
1614 for (int j = 0; j < 8; j++) {
1615 uv_data.push_back(j % 2 == 0 ? u : v);
1616 }
1617 }
1618 auto cmd_buffer = context->CreateCommandBuffer();
1619 auto blit_pass = cmd_buffer->CreateBlitPass();
1620
1621 impeller::TextureDescriptor y_texture_descriptor;
1622 y_texture_descriptor.storage_mode = impeller::StorageMode::kHostVisible;
1623 y_texture_descriptor.format = PixelFormat::kR8UNormInt;
1624 y_texture_descriptor.size = {8, 8};
1625 auto y_texture =
1626 context->GetResourceAllocator()->CreateTexture(y_texture_descriptor);
1627 auto y_mapping = std::make_shared<fml::DataMapping>(y_data);
1628 auto y_mapping_buffer =
1629 context->GetResourceAllocator()->CreateBufferWithCopy(*y_mapping);
1630
1631 blit_pass->AddCopy(DeviceBuffer::AsBufferView(y_mapping_buffer), y_texture);
1632
1633 impeller::TextureDescriptor uv_texture_descriptor;
1634 uv_texture_descriptor.storage_mode = impeller::StorageMode::kHostVisible;
1635 uv_texture_descriptor.format = PixelFormat::kR8G8UNormInt;
1636 uv_texture_descriptor.size = {4, 4};
1637 auto uv_texture =
1638 context->GetResourceAllocator()->CreateTexture(uv_texture_descriptor);
1639 auto uv_mapping = std::make_shared<fml::DataMapping>(uv_data);
1640 auto uv_mapping_buffer =
1641 context->GetResourceAllocator()->CreateBufferWithCopy(*uv_mapping);
1642
1643 blit_pass->AddCopy(DeviceBuffer::AsBufferView(uv_mapping_buffer), uv_texture);
1644
1645 if (!blit_pass->EncodeCommands() ||
1646 !context->GetCommandQueue()->Submit({cmd_buffer}).ok()) {
1647 FML_DLOG(ERROR) << "Could not copy contents into Y/UV texture.";
1648 }
1649
1650 return {y_texture, uv_texture};
1651 }
1652
1653 TEST_P(EntityTest, YUVToRGBFilter) {
1654 if (GetParam() == PlaygroundBackend::kOpenGLES) {
1655 // TODO(114588) : Support YUV to RGB filter on OpenGLES backend.
1656 GTEST_SKIP()
1657 << "YUV to RGB filter is not supported on OpenGLES backend yet.";
1658 }
1659
1660 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1661 YUVColorSpace yuv_color_space_array[2]{YUVColorSpace::kBT601FullRange,
1662 YUVColorSpace::kBT601LimitedRange};
1663 for (int i = 0; i < 2; i++) {
1664 auto yuv_color_space = yuv_color_space_array[i];
1665 auto textures =
1666 CreateTestYUVTextures(GetContext().get(), yuv_color_space);
1667 auto filter_contents = FilterContents::MakeYUVToRGBFilter(
1668 textures[0], textures[1], yuv_color_space);
1669 Entity filter_entity;
1670 filter_entity.SetContents(filter_contents);
1671 auto snapshot = filter_contents->RenderToSnapshot(context, filter_entity);
1672
1673 Entity entity;
1674 auto contents = TextureContents::MakeRect(Rect::MakeLTRB(0, 0, 256, 256));
1675 contents->SetTexture(snapshot->texture);
1676 contents->SetSourceRect(Rect::MakeSize(snapshot->texture->GetSize()));
1677 entity.SetContents(contents);
1678 entity.SetTransform(
1679 Matrix::MakeTranslation({static_cast<Scalar>(100 + 400 * i), 300}));
1680 entity.Render(context, pass);
1681 }
1682 return true;
1683 };
1684 ASSERT_TRUE(OpenPlaygroundHere(callback));
1685 }
1686
1687 TEST_P(EntityTest, RuntimeEffect) {
1688 auto runtime_stages =
1689 OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1690 auto runtime_stage =
1691 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1692 ASSERT_TRUE(runtime_stage);
1693 ASSERT_TRUE(runtime_stage->IsDirty());
1694
1695 bool expect_dirty = true;
1696
1697 PipelineRef first_pipeline;
1698 std::unique_ptr<Geometry> geom = Geometry::MakeCover();
1699
1700 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1701 EXPECT_EQ(runtime_stage->IsDirty(), expect_dirty);
1702
1703 auto contents = std::make_shared<RuntimeEffectContents>();
1704 contents->SetGeometry(geom.get());
1705 contents->SetRuntimeStage(runtime_stage);
1706
1707 struct FragUniforms {
1708 Vector2 iResolution;
1709 Scalar iTime;
1710 } frag_uniforms = {
1711 .iResolution = Vector2(GetWindowSize().width, GetWindowSize().height),
1712 .iTime = static_cast<Scalar>(GetSecondsElapsed()),
1713 };
1714 auto uniform_data = std::make_shared<std::vector<uint8_t>>();
1715 uniform_data->resize(sizeof(FragUniforms));
1716 memcpy(uniform_data->data(), &frag_uniforms, sizeof(FragUniforms));
1717 contents->SetUniformData(uniform_data);
1718
1719 Entity entity;
1720 entity.SetContents(contents);
1721 bool result = contents->Render(context, entity, pass);
1722
1723 if (expect_dirty) {
1724 first_pipeline = pass.GetCommands().back().pipeline;
1725 } else {
1726 EXPECT_EQ(pass.GetCommands().back().pipeline, first_pipeline);
1727 }
1728 expect_dirty = false;
1729 return result;
1730 };
1731
1732 // Simulate some renders and hot reloading of the shader.
1733 auto content_context = GetContentContext();
1734 {
1735 RenderTarget target =
1736 content_context->GetRenderTargetCache()->CreateOffscreen(
1737 *content_context->GetContext(), {1, 1}, 1u);
1738
1739 testing::MockRenderPass mock_pass(GetContext(), target);
1740 callback(*content_context, mock_pass);
1741 callback(*content_context, mock_pass);
1742
1743 // Dirty the runtime stage.
1744 runtime_stages = OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1745 runtime_stage =
1746 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1747
1748 ASSERT_TRUE(runtime_stage->IsDirty());
1749 expect_dirty = true;
1750
1751 callback(*content_context, mock_pass);
1752 }
1753 }
1754
1755 TEST_P(EntityTest, RuntimeEffectCanSuccessfullyRender) {
1756 auto runtime_stages =
1757 OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1758 auto runtime_stage =
1759 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1760 ASSERT_TRUE(runtime_stage);
1761 ASSERT_TRUE(runtime_stage->IsDirty());
1762
1763 auto contents = std::make_shared<RuntimeEffectContents>();
1764 auto geom = Geometry::MakeCover();
1765 contents->SetGeometry(geom.get());
1766 contents->SetRuntimeStage(runtime_stage);
1767
1768 struct FragUniforms {
1769 Vector2 iResolution;
1770 Scalar iTime;
1771 } frag_uniforms = {
1772 .iResolution = Vector2(GetWindowSize().width, GetWindowSize().height),
1773 .iTime = static_cast<Scalar>(GetSecondsElapsed()),
1774 };
1775 auto uniform_data = std::make_shared<std::vector<uint8_t>>();
1776 uniform_data->resize(sizeof(FragUniforms));
1777 memcpy(uniform_data->data(), &frag_uniforms, sizeof(FragUniforms));
1778 contents->SetUniformData(uniform_data);
1779
1780 Entity entity;
1781 entity.SetContents(contents);
1782
1783 // Create a render target with a depth-stencil, similar to how EntityPass
1784 // does.
1785 RenderTarget target =
1786 GetContentContext()->GetRenderTargetCache()->CreateOffscreenMSAA(
1787 *GetContext(), {GetWindowSize().width, GetWindowSize().height}, 1,
1788 "RuntimeEffect Texture");
1789 testing::MockRenderPass pass(GetContext(), target);
1790
1791 ASSERT_TRUE(contents->Render(*GetContentContext(), entity, pass));
1792 ASSERT_EQ(pass.GetCommands().size(), 1u);
1793 const auto& command = pass.GetCommands()[0];
1794 ASSERT_TRUE(command.pipeline->GetDescriptor()
1795 .GetDepthStencilAttachmentDescriptor()
1796 .has_value());
1797 ASSERT_TRUE(command.pipeline->GetDescriptor()
1798 .GetFrontStencilAttachmentDescriptor()
1799 .has_value());
1800 }
1801
1802 TEST_P(EntityTest, RuntimeEffectCanPrecache) {
1803 auto runtime_stages =
1804 OpenAssetAsRuntimeStage("runtime_stage_example.frag.iplr");
1805 auto runtime_stage =
1806 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
1807 ASSERT_TRUE(runtime_stage);
1808 ASSERT_TRUE(runtime_stage->IsDirty());
1809
1810 auto contents = std::make_shared<RuntimeEffectContents>();
1811 contents->SetRuntimeStage(runtime_stage);
1812
1813 EXPECT_TRUE(contents->BootstrapShader(*GetContentContext()));
1814 }
1815
1816 TEST_P(EntityTest, RuntimeEffectSetsRightSizeWhenUniformIsStruct) {
1817 if (GetBackend() != PlaygroundBackend::kVulkan) {
1818 GTEST_SKIP() << "Test only applies to Vulkan";
1819 }
1820
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
1844 auto buffer_view = RuntimeEffectContents::EmplaceVulkanUniform(
1845 uniform_data, GetContentContext()->GetTransientsBuffer(),
1846 runtime_stage->GetUniforms()[0]);
1847
1848 // 16 bytes:
1849 // 8 bytes for iResolution
1850 // 4 bytes for iTime
1851 // 4 bytes padding
1852 EXPECT_EQ(buffer_view.GetRange().length, 16u);
1853 }
1854
1855 TEST_P(EntityTest, ColorFilterWithForegroundColorAdvancedBlend) {
1856 auto image = CreateTextureForFixture("boston.jpg");
1857 auto filter = ColorFilterContents::MakeBlend(
1858 BlendMode::kColorBurn, FilterInput::Make({image}), Color::Red());
1859
1860 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1861 Entity entity;
1862 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1863 Matrix::MakeTranslation({500, 300}) *
1864 Matrix::MakeScale(Vector2{0.5, 0.5}));
1865 entity.SetContents(filter);
1866 return entity.Render(context, pass);
1867 };
1868 ASSERT_TRUE(OpenPlaygroundHere(callback));
1869 }
1870
1871 TEST_P(EntityTest, ColorFilterWithForegroundColorClearBlend) {
1872 auto image = CreateTextureForFixture("boston.jpg");
1873 auto filter = ColorFilterContents::MakeBlend(
1874 BlendMode::kClear, FilterInput::Make({image}), Color::Red());
1875
1876 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1877 Entity entity;
1878 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1879 Matrix::MakeTranslation({500, 300}) *
1880 Matrix::MakeScale(Vector2{0.5, 0.5}));
1881 entity.SetContents(filter);
1882 return entity.Render(context, pass);
1883 };
1884 ASSERT_TRUE(OpenPlaygroundHere(callback));
1885 }
1886
1887 TEST_P(EntityTest, ColorFilterWithForegroundColorSrcBlend) {
1888 auto image = CreateTextureForFixture("boston.jpg");
1889 auto filter = ColorFilterContents::MakeBlend(
1890 BlendMode::kSource, FilterInput::Make({image}), Color::Red());
1891
1892 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1893 Entity entity;
1894 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1895 Matrix::MakeTranslation({500, 300}) *
1896 Matrix::MakeScale(Vector2{0.5, 0.5}));
1897 entity.SetContents(filter);
1898 return entity.Render(context, pass);
1899 };
1900 ASSERT_TRUE(OpenPlaygroundHere(callback));
1901 }
1902
1903 TEST_P(EntityTest, ColorFilterWithForegroundColorDstBlend) {
1904 auto image = CreateTextureForFixture("boston.jpg");
1905 auto filter = ColorFilterContents::MakeBlend(
1906 BlendMode::kDestination, FilterInput::Make({image}), Color::Red());
1907
1908 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1909 Entity entity;
1910 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1911 Matrix::MakeTranslation({500, 300}) *
1912 Matrix::MakeScale(Vector2{0.5, 0.5}));
1913 entity.SetContents(filter);
1914 return entity.Render(context, pass);
1915 };
1916 ASSERT_TRUE(OpenPlaygroundHere(callback));
1917 }
1918
1919 TEST_P(EntityTest, ColorFilterWithForegroundColorSrcInBlend) {
1920 auto image = CreateTextureForFixture("boston.jpg");
1921 auto filter = ColorFilterContents::MakeBlend(
1922 BlendMode::kSourceIn, FilterInput::Make({image}), Color::Red());
1923
1924 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
1925 Entity entity;
1926 entity.SetTransform(Matrix::MakeScale(GetContentScale()) *
1927 Matrix::MakeTranslation({500, 300}) *
1928 Matrix::MakeScale(Vector2{0.5, 0.5}));
1929 entity.SetContents(filter);
1930 return entity.Render(context, pass);
1931 };
1932 ASSERT_TRUE(OpenPlaygroundHere(callback));
1933 }
1934
1935 TEST_P(EntityTest, CoverageForStrokePathWithNegativeValuesInTransform) {
1936 auto arrow_head = PathBuilder{}
1937 .MoveTo({50, 120})
1938 .LineTo({120, 190})
1939 .LineTo({190, 120})
1940 .TakePath();
1941 auto geometry = Geometry::MakeStrokePath(arrow_head, 15.0, 4.0, Cap::kRound,
1942 Join::kRound);
1943
1944 auto transform = Matrix::MakeTranslation({300, 300}) *
1945 Matrix::MakeRotationZ(Radians(kPiOver2));
1946 // Note that e[0][0] used to be tested here, but it was -epsilon solely
1947 // due to floating point inaccuracy in the transcendental trig functions.
1948 // e[1][0] is the intended negative value that we care about (-1.0) as it
1949 // comes from the rotation of pi/2.
1950 EXPECT_LT(transform.e[1][0], 0.0f);
1951 auto coverage = geometry->GetCoverage(transform);
1952 ASSERT_RECT_NEAR(coverage.value(), Rect::MakeXYWH(102.5, 342.5, 85, 155));
1953 }
1954
1955 TEST_P(EntityTest, SolidColorContentsIsOpaque) {
1956 Matrix matrix;
1957 SolidColorContents contents;
1958 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
1959 contents.SetGeometry(geom.get());
1960
1961 contents.SetColor(Color::CornflowerBlue());
1962 EXPECT_TRUE(contents.IsOpaque(matrix));
1963 contents.SetColor(Color::CornflowerBlue().WithAlpha(0.5));
1964 EXPECT_FALSE(contents.IsOpaque(matrix));
1965
1966 // Create stroked path that required alpha coverage.
1967 geom = Geometry::MakeStrokePath(
1968 PathBuilder{}.AddLine({0, 0}, {100, 100}).TakePath(),
1969 /*stroke_width=*/0.05);
1970 contents.SetGeometry(geom.get());
1971 contents.SetColor(Color::CornflowerBlue());
1972
1973 EXPECT_FALSE(contents.IsOpaque(matrix));
1974 }
1975
1976 TEST_P(EntityTest, ConicalGradientContentsIsOpaque) {
1977 Matrix matrix;
1978 ConicalGradientContents contents;
1979 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
1980 contents.SetGeometry(geom.get());
1981
1982 contents.SetColors({Color::CornflowerBlue()});
1983 EXPECT_FALSE(contents.IsOpaque(matrix));
1984 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
1985 EXPECT_FALSE(contents.IsOpaque(matrix));
1986
1987 // Create stroked path that required alpha coverage.
1988 geom = Geometry::MakeStrokePath(
1989 PathBuilder{}.AddLine({0, 0}, {100, 100}).TakePath(),
1990 /*stroke_width=*/0.05);
1991 contents.SetGeometry(geom.get());
1992 contents.SetColors({Color::CornflowerBlue()});
1993
1994 EXPECT_FALSE(contents.IsOpaque(matrix));
1995 }
1996
1997 TEST_P(EntityTest, LinearGradientContentsIsOpaque) {
1998 Matrix matrix;
1999 LinearGradientContents contents;
2000 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2001 contents.SetGeometry(geom.get());
2002
2003 contents.SetColors({Color::CornflowerBlue()});
2004 EXPECT_TRUE(contents.IsOpaque(matrix));
2005 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
2006 EXPECT_FALSE(contents.IsOpaque(matrix));
2007 contents.SetColors({Color::CornflowerBlue()});
2008 contents.SetTileMode(Entity::TileMode::kDecal);
2009 EXPECT_FALSE(contents.IsOpaque(matrix));
2010
2011 // Create stroked path that required alpha coverage.
2012 geom = Geometry::MakeStrokePath(
2013 PathBuilder{}.AddLine({0, 0}, {100, 100}).TakePath(),
2014 /*stroke_width=*/0.05);
2015 contents.SetGeometry(geom.get());
2016 contents.SetColors({Color::CornflowerBlue()});
2017
2018 EXPECT_FALSE(contents.IsOpaque(matrix));
2019 }
2020
2021 TEST_P(EntityTest, RadialGradientContentsIsOpaque) {
2022 Matrix matrix;
2023 RadialGradientContents contents;
2024 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2025 contents.SetGeometry(geom.get());
2026
2027 contents.SetColors({Color::CornflowerBlue()});
2028 EXPECT_TRUE(contents.IsOpaque(matrix));
2029 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
2030 EXPECT_FALSE(contents.IsOpaque(matrix));
2031 contents.SetColors({Color::CornflowerBlue()});
2032 contents.SetTileMode(Entity::TileMode::kDecal);
2033 EXPECT_FALSE(contents.IsOpaque(matrix));
2034
2035 // Create stroked path that required alpha coverage.
2036 geom = Geometry::MakeStrokePath(
2037 PathBuilder{}.AddLine({0, 0}, {100, 100}).TakePath(),
2038 /*stroke_width=*/0.05);
2039 contents.SetGeometry(geom.get());
2040 contents.SetColors({Color::CornflowerBlue()});
2041
2042 EXPECT_FALSE(contents.IsOpaque(matrix));
2043 }
2044
2045 TEST_P(EntityTest, SweepGradientContentsIsOpaque) {
2046 Matrix matrix;
2047 RadialGradientContents contents;
2048 auto geom = Geometry::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
2049 contents.SetGeometry(geom.get());
2050
2051 contents.SetColors({Color::CornflowerBlue()});
2052 EXPECT_TRUE(contents.IsOpaque(matrix));
2053 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.5)});
2054 EXPECT_FALSE(contents.IsOpaque(matrix));
2055 contents.SetColors({Color::CornflowerBlue()});
2056 contents.SetTileMode(Entity::TileMode::kDecal);
2057 EXPECT_FALSE(contents.IsOpaque(matrix));
2058
2059 // Create stroked path that required alpha coverage.
2060 geom = Geometry::MakeStrokePath(
2061 PathBuilder{}.AddLine({0, 0}, {100, 100}).TakePath(),
2062 /*stroke_width=*/0.05);
2063 contents.SetGeometry(geom.get());
2064 contents.SetColors({Color::CornflowerBlue()});
2065
2066 EXPECT_FALSE(contents.IsOpaque(matrix));
2067 }
2068
2069 TEST_P(EntityTest, TiledTextureContentsIsOpaque) {
2070 Matrix matrix;
2071 auto bay_bridge = CreateTextureForFixture("bay_bridge.jpg");
2072 TiledTextureContents contents;
2073 contents.SetTexture(bay_bridge);
2074 // This is a placeholder test. Images currently never decompress as opaque
2075 // (whether in Flutter or the playground), and so this should currently always
2076 // return false in practice.
2077 EXPECT_FALSE(contents.IsOpaque(matrix));
2078 }
2079
2080 TEST_P(EntityTest, PointFieldGeometryCoverage) {
2081 std::vector<Point> points = {{10, 20}, {100, 200}};
2082 PointFieldGeometry geometry(points.data(), 2, 5.0, false);
2083 ASSERT_EQ(geometry.GetCoverage(Matrix()), Rect::MakeLTRB(5, 15, 105, 205));
2084 ASSERT_EQ(geometry.GetCoverage(Matrix::MakeTranslation({30, 0, 0})),
2085 Rect::MakeLTRB(35, 15, 135, 205));
2086 }
2087
2088 TEST_P(EntityTest, ColorFilterContentsWithLargeGeometry) {
2089 Entity entity;
2090 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
2091 auto src_contents = std::make_shared<SolidColorContents>();
2092 auto src_geom = Geometry::MakeRect(Rect::MakeLTRB(-300, -500, 30000, 50000));
2093 src_contents->SetGeometry(src_geom.get());
2094 src_contents->SetColor(Color::Red());
2095
2096 auto dst_contents = std::make_shared<SolidColorContents>();
2097 auto dst_geom = Geometry::MakeRect(Rect::MakeLTRB(300, 500, 20000, 30000));
2098 dst_contents->SetGeometry(dst_geom.get());
2099 dst_contents->SetColor(Color::Blue());
2100
2101 auto contents = ColorFilterContents::MakeBlend(
2102 BlendMode::kSourceOver, {FilterInput::Make(dst_contents, false),
2103 FilterInput::Make(src_contents, false)});
2104 entity.SetContents(std::move(contents));
2105 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
2106 }
2107
2108 TEST_P(EntityTest, TextContentsCeilsGlyphScaleToDecimal) {
2109 ASSERT_EQ(TextFrame::RoundScaledFontSize(0.4321111f), 0.43f);
2110 ASSERT_EQ(TextFrame::RoundScaledFontSize(0.5321111f), 0.53f);
2111 ASSERT_EQ(TextFrame::RoundScaledFontSize(2.1f), 2.1f);
2112 ASSERT_EQ(TextFrame::RoundScaledFontSize(0.0f), 0.0f);
2113 ASSERT_EQ(TextFrame::RoundScaledFontSize(100000000.0f), 48.0f);
2114 }
2115
2116 TEST_P(EntityTest, SpecializationConstantsAreAppliedToVariants) {
2117 auto content_context = GetContentContext();
2118
2119 auto default_gyph = content_context->GetGlyphAtlasPipeline({
2120 .color_attachment_pixel_format = PixelFormat::kR8G8B8A8UNormInt,
2121 .has_depth_stencil_attachments = false,
2122 });
2123 auto alt_gyph = content_context->GetGlyphAtlasPipeline(
2124 {.color_attachment_pixel_format = PixelFormat::kR8G8B8A8UNormInt,
2125 .has_depth_stencil_attachments = true});
2126
2127 EXPECT_NE(default_gyph, alt_gyph);
2128 EXPECT_EQ(default_gyph->GetDescriptor().GetSpecializationConstants(),
2129 alt_gyph->GetDescriptor().GetSpecializationConstants());
2130
2131 auto use_a8 = GetContext()->GetCapabilities()->GetDefaultGlyphAtlasFormat() ==
2132 PixelFormat::kA8UNormInt;
2133
2134 std::vector<Scalar> expected_constants = {static_cast<Scalar>(use_a8)};
2135 EXPECT_EQ(default_gyph->GetDescriptor().GetSpecializationConstants(),
2136 expected_constants);
2137 }
2138
2139 TEST_P(EntityTest, DecalSpecializationAppliedToMorphologyFilter) {
2140 auto content_context = GetContentContext();
2141 auto default_color_burn = content_context->GetMorphologyFilterPipeline({
2142 .color_attachment_pixel_format = PixelFormat::kR8G8B8A8UNormInt,
2143 });
2144
2145 auto decal_supported = static_cast<Scalar>(
2146 GetContext()->GetCapabilities()->SupportsDecalSamplerAddressMode());
2147 std::vector<Scalar> expected_constants = {decal_supported};
2148 ASSERT_EQ(default_color_burn->GetDescriptor().GetSpecializationConstants(),
2149 expected_constants);
2150 }
2151
2152 // This doesn't really tell you if the hashes will have frequent
2153 // collisions, but since this type is only used to hash a bounded
2154 // set of options, we can just compare benchmarks.
2155 TEST_P(EntityTest, ContentContextOptionsHasReasonableHashFunctions) {
2156 ContentContextOptions opts;
2157 auto hash_a = opts.ToKey();
2158
2159 opts.blend_mode = BlendMode::kColorBurn;
2160 auto hash_b = opts.ToKey();
2161
2162 opts.has_depth_stencil_attachments = false;
2163 auto hash_c = opts.ToKey();
2164
2165 opts.primitive_type = PrimitiveType::kPoint;
2166 auto hash_d = opts.ToKey();
2167
2168 EXPECT_NE(hash_a, hash_b);
2169 EXPECT_NE(hash_b, hash_c);
2170 EXPECT_NE(hash_c, hash_d);
2171 }
2172
2173 #ifdef FML_OS_LINUX
2174 TEST_P(EntityTest, FramebufferFetchVulkanBindingOffsetIsTheSame) {
2175 // Using framebuffer fetch on Vulkan requires that we maintain a subpass input
2176 // binding that we don't have a good route for configuring with the
2177 // current metadata approach. This test verifies that the binding value
2178 // doesn't change
2179 // from the expected constant.
2180 // See also:
2181 // * impeller/renderer/backend/vulkan/binding_helpers_vk.cc
2182 // * impeller/entity/shaders/blending/framebuffer_blend.frag
2183 // This test only works on Linux because macOS hosts incorrectly
2184 // populate the
2185 // Vulkan descriptor sets based on the MSL compiler settings.
2186
2187 bool expected_layout = false;
2188 for (const DescriptorSetLayout& layout : FramebufferBlendColorBurnPipeline::
2189 FragmentShader::kDescriptorSetLayouts) {
2190 if (layout.binding == 64 &&
2191 layout.descriptor_type == DescriptorType::kInputAttachment) {
2192 expected_layout = true;
2193 }
2194 }
2195 EXPECT_TRUE(expected_layout);
2196 }
2197 #endif
2198
2199 TEST_P(EntityTest, FillPathGeometryGetPositionBufferReturnsExpectedMode) {
2200 RenderTarget target;
2201 testing::MockRenderPass mock_pass(GetContext(), target);
2202
2203 auto get_result = [this, &mock_pass](const Path& path) {
2204 auto geometry = Geometry::MakeFillPath(
2205 path, /* inner rect */ Rect::MakeLTRB(0, 0, 100, 100));
2206 return geometry->GetPositionBuffer(*GetContentContext(), {}, mock_pass);
2207 };
2208
2209 // Convex path
2210 {
2211 GeometryResult result =
2212 get_result(PathBuilder{}
2213 .AddRect(Rect::MakeLTRB(0, 0, 100, 100))
2214 .SetConvexity(Convexity::kConvex)
2215 .TakePath());
2216 EXPECT_EQ(result.mode, GeometryResult::Mode::kNormal);
2217 }
2218
2219 // Concave path
2220 {
2221 Path path = PathBuilder{}
2222 .MoveTo({0, 0})
2223 .LineTo({100, 0})
2224 .LineTo({100, 100})
2225 .LineTo({50, 50})
2226 .Close()
2227 .TakePath();
2228 GeometryResult result = get_result(path);
2229 EXPECT_EQ(result.mode, GeometryResult::Mode::kNonZero);
2230 }
2231 }
2232
2233 TEST_P(EntityTest, FailOnValidationError) {
2234 if (GetParam() != PlaygroundBackend::kVulkan) {
2235 GTEST_SKIP() << "Validation is only fatal on Vulkan backend.";
2236 }
2237 EXPECT_DEATH(
2238 // The easiest way to trigger a validation error is to try to compile
2239 // a shader with an unsupported pixel format.
2240 GetContentContext()->GetBlendColorBurnPipeline({
2241 .color_attachment_pixel_format = PixelFormat::kUnknown,
2242 .has_depth_stencil_attachments = false,
2243 }),
2244 "");
2245 }
2246
2247 TEST_P(EntityTest, CanComputeGeometryForEmptyPathsWithoutCrashing) {
2248 PathBuilder builder = {};
2249 builder.AddRect(Rect::MakeLTRB(0, 0, 0, 0));
2250 Path path = builder.TakePath();
2251
2252 EXPECT_TRUE(path.GetBoundingBox()->IsEmpty());
2253
2254 auto geom = Geometry::MakeFillPath(path);
2255
2256 Entity entity;
2257 RenderTarget target =
2258 GetContentContext()->GetRenderTargetCache()->CreateOffscreen(
2259 *GetContext(), {1, 1}, 1u);
2260 testing::MockRenderPass render_pass(GetContext(), target);
2261 auto position_result =
2262 geom->GetPositionBuffer(*GetContentContext(), entity, render_pass);
2263
2264 EXPECT_EQ(position_result.vertex_buffer.vertex_count, 0u);
2265
2266 EXPECT_EQ(geom->GetResultMode(), GeometryResult::Mode::kNormal);
2267 }
2268
2269 TEST_P(EntityTest, CanRenderEmptyPathsWithoutCrashing) {
2270 PathBuilder builder = {};
2271 builder.AddRect(Rect::MakeLTRB(0, 0, 0, 0));
2272 Path path = builder.TakePath();
2273
2274 EXPECT_TRUE(path.GetBoundingBox()->IsEmpty());
2275
2276 auto contents = std::make_shared<SolidColorContents>();
2277 std::unique_ptr<Geometry> geom = Geometry::MakeFillPath(path);
2278 contents->SetGeometry(geom.get());
2279 contents->SetColor(Color::Red());
2280
2281 Entity entity;
2282 entity.SetTransform(Matrix::MakeScale(GetContentScale()));
2283 entity.SetContents(contents);
2284
2285 ASSERT_TRUE(OpenPlaygroundHere(std::move(entity)));
2286 }
2287
2288 TEST_P(EntityTest, DrawSuperEllipse) {
2289 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
2290 // UI state.
2291 static float alpha = 10;
2292 static float beta = 10;
2293 static float radius = 40;
2294 static int degree = 4;
2295 static Color color = Color::Red();
2296
2297 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
2298 ImGui::SliderFloat("Alpha", &alpha, 0, 100);
2299 ImGui::SliderFloat("Beta", &beta, 0, 100);
2300 ImGui::SliderInt("Degreee", &degree, 1, 20);
2301 ImGui::SliderFloat("Radius", &radius, 0, 400);
2302 ImGui::ColorEdit4("Color", reinterpret_cast<float*>(&color));
2303 ImGui::End();
2304
2305 auto contents = std::make_shared<SolidColorContents>();
2306 std::unique_ptr<SuperellipseGeometry> geom =
2307 std::make_unique<SuperellipseGeometry>(Point{400, 400}, radius, degree,
2308 alpha, beta);
2309 contents->SetColor(color);
2310 contents->SetGeometry(geom.get());
2311
2312 Entity entity;
2313 entity.SetContents(contents);
2314
2315 return entity.Render(context, pass);
2316 };
2317
2318 ASSERT_TRUE(OpenPlaygroundHere(callback));
2319 }
2320
2321 TEST_P(EntityTest, DrawRoundSuperEllipse) {
2322 auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
2323 // UI state.
2324 static float center[2] = {830, 830};
2325 static float size[2] = {600, 600};
2326 static bool horizontal_symmetry = true;
2327 static bool vertical_symmetry = true;
2328 static bool corner_symmetry = true;
2329
2330 // Initially radius_tl[0] will be mirrored to all 8 values since all 3
2331 // symmetries are enabled.
2332 static std::array<float, 2> radius_tl = {200};
2333 static std::array<float, 2> radius_tr;
2334 static std::array<float, 2> radius_bl;
2335 static std::array<float, 2> radius_br;
2336
2337 auto AddRadiusControl = [](std::array<float, 2>& radii, const char* tb_name,
2338 const char* lr_name) {
2339 std::string name = "Radius";
2340 if (!horizontal_symmetry || !vertical_symmetry) {
2341 name += ":";
2342 }
2343 if (!vertical_symmetry) {
2344 name = name + " " + tb_name;
2345 }
2346 if (!horizontal_symmetry) {
2347 name = name + " " + lr_name;
2348 }
2349 if (corner_symmetry) {
2350 ImGui::SliderFloat(name.c_str(), radii.data(), 0, 1000);
2351 } else {
2352 ImGui::SliderFloat2(name.c_str(), radii.data(), 0, 1000);
2353 }
2354 };
2355
2356 if (corner_symmetry) {
2357 radius_tl[1] = radius_tl[0];
2358 radius_tr[1] = radius_tr[0];
2359 radius_bl[1] = radius_bl[0];
2360 radius_br[1] = radius_br[0];
2361 }
2362
2363 ImGui::Begin("Controls", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
2364 {
2365 ImGui::SliderFloat2("Center", center, 0, 1000);
2366 ImGui::SliderFloat2("Size", size, 0, 1000);
2367 ImGui::Checkbox("Symmetry: Horizontal", &horizontal_symmetry);
2368 ImGui::Checkbox("Symmetry: Vertical", &vertical_symmetry);
2369 ImGui::Checkbox("Symmetry: Corners", &corner_symmetry);
2370 AddRadiusControl(radius_tl, "Top", "Left");
2371 if (!horizontal_symmetry) {
2372 AddRadiusControl(radius_tr, "Top", "Right");
2373 } else {
2374 radius_tr = radius_tl;
2375 }
2376 if (!vertical_symmetry) {
2377 AddRadiusControl(radius_bl, "Bottom", "Left");
2378 } else {
2379 radius_bl = radius_tl;
2380 }
2381 if (!horizontal_symmetry && !vertical_symmetry) {
2382 AddRadiusControl(radius_br, "Bottom", "Right");
2383 } else {
2384 if (horizontal_symmetry) {
2385 radius_br = radius_bl;
2386 } else {
2387 radius_br = radius_tr;
2388 }
2389 }
2390 }
2391
2392 ImGui::End();
2393
2394 RoundingRadii radii{
2395 .top_left = {radius_tl[0], radius_tl[1]},
2396 .top_right = {radius_tr[0], radius_tr[1]},
2397 .bottom_left = {radius_bl[0], radius_bl[1]},
2398 .bottom_right = {radius_br[0], radius_br[1]},
2399 };
2400
2401 auto contents = std::make_shared<SolidColorContents>();
2402 std::unique_ptr<RoundSuperellipseGeometry> geom =
2403 std::make_unique<RoundSuperellipseGeometry>(
2404 Rect::MakeOriginSize({center[0], center[1]}, {size[0], size[1]}),
2405 radii);
2406 contents->SetColor(Color::Red());
2407 contents->SetGeometry(geom.get());
2408
2409 Entity entity;
2410 entity.SetContents(contents);
2411
2412 return entity.Render(context, pass);
2413 };
2414
2415 ASSERT_TRUE(OpenPlaygroundHere(callback));
2416 }
2417
2418 TEST_P(EntityTest, SolidColorApplyColorFilter) {
2419 auto contents = SolidColorContents();
2420 contents.SetColor(Color::CornflowerBlue().WithAlpha(0.75));
2421 auto result = contents.ApplyColorFilter([](const Color& color) {
2422 return color.Blend(Color::LimeGreen().WithAlpha(0.75), BlendMode::kScreen);
2423 });
2424 ASSERT_TRUE(result);
2425 ASSERT_COLOR_NEAR(contents.GetColor(),
2426 Color(0.424452, 0.828743, 0.79105, 0.9375));
2427 }
2428
2429 #define APPLY_COLOR_FILTER_GRADIENT_TEST(name) \
2430 TEST_P(EntityTest, name##GradientApplyColorFilter) { \
2431 auto contents = name##GradientContents(); \
2432 contents.SetColors({Color::CornflowerBlue().WithAlpha(0.75)}); \
2433 auto result = contents.ApplyColorFilter([](const Color& color) { \
2434 return color.Blend(Color::LimeGreen().WithAlpha(0.75), \
2435 BlendMode::kScreen); \
2436 }); \
2437 ASSERT_TRUE(result); \
2438 \
2439 std::vector<Color> expected = {Color(0.433247, 0.879523, 0.825324, 0.75)}; \
2440 ASSERT_COLORS_NEAR(contents.GetColors(), expected); \
2441 }
2442
2443 APPLY_COLOR_FILTER_GRADIENT_TEST(Linear);
2444 APPLY_COLOR_FILTER_GRADIENT_TEST(Radial);
2445 APPLY_COLOR_FILTER_GRADIENT_TEST(Conical);
2446 APPLY_COLOR_FILTER_GRADIENT_TEST(Sweep);
2447
2448 TEST_P(EntityTest, GiantStrokePathAllocation) {
2449 PathBuilder builder{};
2450 for (int i = 0; i < 10000; i++) {
2451 builder.LineTo(Point(i, i));
2452 }
2453 Path path = builder.TakePath();
2454 auto geom = Geometry::MakeStrokePath(path, /*stroke_width=*/10);
2455
2456 ContentContext content_context(GetContext(), /*typographer_context=*/nullptr);
2457 Entity entity;
2458
2459 auto cmd_buffer = content_context.GetContext()->CreateCommandBuffer();
2460
2461 RenderTargetAllocator allocator(
2462 content_context.GetContext()->GetResourceAllocator());
2463
2464 auto render_target = allocator.CreateOffscreen(
2465 *content_context.GetContext(), /*size=*/{10, 10}, /*mip_count=*/1);
2466 auto pass = cmd_buffer->CreateRenderPass(render_target);
2467
2468 GeometryResult result =
2469 geom->GetPositionBuffer(content_context, entity, *pass);
2470
2471 // Validate the buffer data overflowed the small buffer
2472 EXPECT_GT(result.vertex_buffer.vertex_count, kPointArenaSize);
2473
2474 // Validate that there are no uninitialized points near the gap.
2475 Point* written_data = reinterpret_cast<Point*>(
2476 (result.vertex_buffer.vertex_buffer.GetBuffer()->OnGetContents() +
2477 result.vertex_buffer.vertex_buffer.GetRange().offset));
2478
2479 std::vector<Point> expected = {
2480 Point(1019.46, 1026.54), //
2481 Point(1026.54, 1019.46), //
2482 Point(1020.45, 1027.54), //
2483 Point(1027.54, 1020.46), //
2484 Point(1020.46, 1027.53) //
2485 };
2486
2487 Point point = written_data[kPointArenaSize - 2];
2488 EXPECT_NEAR(point.x, expected[0].x, 0.1);
2489 EXPECT_NEAR(point.y, expected[0].y, 0.1);
2490
2491 point = written_data[kPointArenaSize - 1];
2492 EXPECT_NEAR(point.x, expected[1].x, 0.1);
2493 EXPECT_NEAR(point.y, expected[1].y, 0.1);
2494
2495 point = written_data[kPointArenaSize];
2496 EXPECT_NEAR(point.x, expected[2].x, 0.1);
2497 EXPECT_NEAR(point.y, expected[2].y, 0.1);
2498
2499 point = written_data[kPointArenaSize + 1];
2500 EXPECT_NEAR(point.x, expected[3].x, 0.1);
2501 EXPECT_NEAR(point.y, expected[3].y, 0.1);
2502
2503 point = written_data[kPointArenaSize + 2];
2504 EXPECT_NEAR(point.x, expected[4].x, 0.1);
2505 EXPECT_NEAR(point.y, expected[4].y, 0.1);
2506 }
2507
2508 TEST_P(EntityTest, GiantLineStripPathAllocation) {
2509 PathBuilder builder{};
2510 for (int i = 0; i < 10000; i++) {
2511 builder.LineTo(Point(i, i));
2512 }
2513 Path path = builder.TakePath();
2514
2515 ContentContext content_context(GetContext(), /*typographer_context=*/nullptr);
2516 Entity entity;
2517
2518 auto host_buffer = HostBuffer::Create(GetContext()->GetResourceAllocator(),
2519 GetContext()->GetIdleWaiter());
2520 auto tessellator = Tessellator();
2521
2522 auto vertex_buffer = tessellator.GenerateLineStrip(path, *host_buffer, 1.0);
2523
2524 // Validate the buffer data overflowed the small buffer
2525 EXPECT_GT(vertex_buffer.vertex_count, kPointArenaSize);
2526
2527 // Validate that there are no uninitialized points near the gap.
2528 Point* written_data = reinterpret_cast<Point*>(
2529 (vertex_buffer.vertex_buffer.GetBuffer()->OnGetContents() +
2530 vertex_buffer.vertex_buffer.GetRange().offset));
2531
2532 std::vector<Point> expected = {
2533 Point(4093, 4093), //
2534 Point(4094, 4094), //
2535 Point(4095, 4095), //
2536 Point(4096, 4096), //
2537 Point(4097, 4097) //
2538 };
2539
2540 Point point = written_data[kPointArenaSize - 2];
2541 EXPECT_NEAR(point.x, expected[0].x, 0.1);
2542 EXPECT_NEAR(point.y, expected[0].y, 0.1);
2543
2544 point = written_data[kPointArenaSize - 1];
2545 EXPECT_NEAR(point.x, expected[1].x, 0.1);
2546 EXPECT_NEAR(point.y, expected[1].y, 0.1);
2547
2548 point = written_data[kPointArenaSize];
2549 EXPECT_NEAR(point.x, expected[2].x, 0.1);
2550 EXPECT_NEAR(point.y, expected[2].y, 0.1);
2551
2552 point = written_data[kPointArenaSize + 1];
2553 EXPECT_NEAR(point.x, expected[3].x, 0.1);
2554 EXPECT_NEAR(point.y, expected[3].y, 0.1);
2555
2556 point = written_data[kPointArenaSize + 2];
2557 EXPECT_NEAR(point.x, expected[4].x, 0.1);
2558 EXPECT_NEAR(point.y, expected[4].y, 0.1);
2559 }
2560
2561 } // namespace testing
2562 } // namespace impeller
2563
2564 // NOLINTEND(bugprone-unchecked-optional-access)
buffer_view
BufferView buffer_view
Definition: blit_command_gles.cc:152
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:30
impeller::ContentContext
Definition: content_context.h:371
impeller::ContentContext::GetTransientsBuffer
HostBuffer & GetTransientsBuffer() const
Retrieve the currnent host buffer for transient storage.
Definition: content_context.h:866
impeller::ContentContext::GetSolidFillPipeline
PipelineRef GetSolidFillPipeline(ContentContextOptions opts) const
Definition: content_context.h:452
impeller::ContentContext::GetContext
std::shared_ptr< Context > GetContext() const
Definition: content_context.cc:613
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:46
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:20
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:42
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:145
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:22
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:76
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:51
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:38
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:108
impeller::FilterInput::Make
static FilterInput::Ref Make(Variant input, bool msaa_enabled=true)
Definition: filter_input.cc:19
impeller::Geometry::MakeStrokePath
static std::unique_ptr< Geometry > MakeStrokePath(const Path &path, Scalar stroke_width=0.0, Scalar miter_limit=4.0, Cap stroke_cap=Cap::kButt, Join stroke_join=Join::kMiter)
Definition: geometry.cc:65
impeller::Geometry::MakeFillPath
static std::unique_ptr< Geometry > MakeFillPath(const Path &path, std::optional< Rect > inner_rect=std::nullopt)
Definition: geometry.cc:59
impeller::Geometry::MakeRect
static std::unique_ptr< Geometry > MakeRect(const Rect &rect)
Definition: geometry.cc:82
impeller::Geometry::MakeCover
static std::unique_ptr< Geometry > MakeCover()
Definition: geometry.cc:78
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:48
impeller::HostBuffer::Create
static std::shared_ptr< HostBuffer > Create(const std::shared_ptr< Allocator > &allocator, const std::shared_ptr< const IdleWaiter > &idle_waiter)
Definition: host_buffer.cc:21
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::PathBuilder
Definition: path_builder.h:15
impeller::PathBuilder::AddRect
PathBuilder & AddRect(Rect rect)
Definition: path_builder.cc:129
impeller::PathBuilder::TakePath
Path TakePath(FillType fill=FillType::kNonZero)
Definition: path_builder.cc:28
impeller::PathBuilder::LineTo
PathBuilder & LineTo(Point point, bool relative=false)
Insert a line from the current position to point.
Definition: path_builder.cc:64
impeller::PathBuilder::MoveTo
PathBuilder & MoveTo(Point point, bool relative=false)
Definition: path_builder.cc:45
impeller::PathBuilder::Close
PathBuilder & Close()
Definition: path_builder.cc:52
impeller::PathBuilder::AddLine
PathBuilder & AddLine(const Point &p1, const Point &p2)
Move to point p1, then insert a line from p1 to p2.
Definition: path_builder.cc:444
impeller::PathBuilder::AddCubicCurve
PathBuilder & AddCubicCurve(Point p1, Point cp1, Point cp2, Point p2)
Move to point p1, then insert a cubic curve from p1 to p2 with control points cp1 and cp2.
Definition: path_builder.cc:120
impeller::Path
Paths are lightweight objects that describe a collection of linear, quadratic, or cubic segments....
Definition: path.h:53
impeller::Path::GetBoundingBox
std::optional< Rect > GetBoundingBox() const
Definition: path.cc:436
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::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:106
impeller::RenderPipelineHandle::VertexShader
VertexShader_ VertexShader
Definition: pipeline.h:113
impeller::RenderPipelineHandle::FragmentShader
FragmentShader_ FragmentShader
Definition: pipeline.h:114
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)
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 is created from a stroked path object.
Definition: stroke_path_geometry.h:14
impeller::Tessellator
A utility that generates triangles of the specified fill type given a polyline. This happens on the C...
Definition: tessellator.h:34
impeller::TextFrame::RoundScaledFontSize
static Scalar RoundScaledFontSize(Scalar scale)
Definition: text_frame.cc:41
impeller::TextureContents::MakeRect
static std::shared_ptr< TextureContents > MakeRect(Rect destination)
A common case factory that marks the texture contents as having a destination rectangle....
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:99
impeller::TiledTextureContents::SetTexture
void SetTexture(std::shared_ptr< Texture > texture)
Definition: tiled_texture_contents.cc:40
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
path_builder.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::TEST_P
TEST_P(AiksTest, DrawAtlasNoColor)
Definition: aiks_dl_atlas_unittests.cc:57
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:1575
impeller::testing::CreateTestYUVTextures
static std::vector< std::shared_ptr< Texture > > CreateTestYUVTextures(Context *context, YUVColorSpace yuv_color_space)
Definition: entity_unittests.cc:1592
impeller
Definition: allocation.cc:12
impeller::YUVColorSpace
YUVColorSpace
Definition: color.h:54
impeller::YUVColorSpace::kBT601FullRange
@ kBT601FullRange
impeller::YUVColorSpace::kBT601LimitedRange
@ kBT601LimitedRange
impeller::Join
Join
Definition: path.h:25
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:18
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::VS
GlyphAtlasPipeline::VertexShader VS
Definition: text_contents.cc:25
impeller::Point
TPoint< Scalar > Point
Definition: point.h:327
impeller::StorageMode::kHostVisible
@ kHostVisible
impeller::Convexity::kConvex
@ kConvex
impeller::Cap
Cap
Definition: path.h:19
impeller::Cap::kRound
@ kRound
impeller::Cap::kButt
@ kButt
impeller::Cap::kSquare
@ kSquare
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::BlendMode
BlendMode
Definition: color.h:58
impeller::BlendMode::kDestinationOver
@ kDestinationOver
impeller::BlendMode::kColorBurn
@ kColorBurn
impeller::BlendMode::kPlus
@ kPlus
impeller::BlendMode::kDestinationIn
@ kDestinationIn
impeller::BlendMode::kDestinationOut
@ kDestinationOut
impeller::BlendMode::kModulate
@ kModulate
impeller::BlendMode::kSourceATop
@ kSourceATop
impeller::BlendMode::kScreen
@ kScreen
impeller::BlendMode::kXor
@ kXor
impeller::BlendMode::kDestination
@ kDestination
impeller::BlendMode::kSource
@ kSource
impeller::BlendMode::kSoftLight
@ kSoftLight
impeller::BlendMode::kSourceIn
@ kSourceIn
impeller::BlendMode::kDestinationATop
@ kDestinationATop
impeller::BlendMode::kClear
@ kClear
impeller::BlendMode::kSourceOver
@ kSourceOver
impeller::BlendMode::kSourceOut
@ kSourceOut
impeller::PlaygroundBackend::kOpenGLES
@ kOpenGLES
impeller::PlaygroundBackend::kVulkan
@ kVulkan
impeller::MoveTo
void MoveTo(PathBuilder *builder, Scalar x, Scalar y)
Definition: tessellator.cc:20
impeller::FS
GlyphAtlasPipeline::FragmentShader FS
Definition: text_contents.cc:26
impeller::kPointArenaSize
static constexpr size_t kPointArenaSize
The size of the point arena buffer stored on the tessellator.
Definition: tessellator.h:22
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
scale
const Scalar scale
Definition: stroke_path_geometry.cc:316
offset
SeparatedVector2 offset
Definition: stroke_path_geometry.cc:319
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:123
impeller::Color::LimeGreen
static constexpr Color LimeGreen()
Definition: color.h:601
impeller::Color::MintCream
static constexpr Color MintCream()
Definition: color.h:657
impeller::Color::alpha
Scalar alpha
Definition: color.h:142
impeller::Color::DeepPink
static constexpr Color DeepPink()
Definition: color.h:433
impeller::Color::Black
static constexpr Color Black()
Definition: color.h:265
impeller::Color::CornflowerBlue
static constexpr Color CornflowerBlue()
Definition: color.h:341
impeller::Color::White
static constexpr Color White()
Definition: color.h:263
impeller::Color::WithAlpha
constexpr Color WithAlpha(Scalar new_alpha) const
Definition: color.h:277
impeller::Color::WhiteTransparent
static constexpr Color WhiteTransparent()
Definition: color.h:267
impeller::Color::Coral
static constexpr Color Coral()
Definition: color.h:337
impeller::Color::Red
static constexpr Color Red()
Definition: color.h:271
impeller::Color::Premultiply
constexpr Color Premultiply() const
Definition: color.h:211
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:275
impeller::Color::Green
static constexpr Color Green()
Definition: color.h:273
impeller::ColorMatrix
Definition: color.h:116
impeller::ColorMatrix::array
Scalar array[20]
Definition: color.h:117
impeller::ContentContextOptions
Definition: content_context.h:279
impeller::ContentContextOptions::primitive_type
PrimitiveType primitive_type
Definition: content_context.h:336
impeller::ContentContextOptions::has_depth_stencil_attachments
bool has_depth_stencil_attachments
Definition: content_context.h:338
impeller::ContentContextOptions::blend_mode
BlendMode blend_mode
Definition: content_context.h:333
impeller::ContentContextOptions::ToKey
constexpr uint64_t ToKey() const
Definition: content_context.h:343
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:401
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:17
impeller::Radians
Definition: scalar.h:43
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::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 >::MakeOriginSize
constexpr static TRect MakeOriginSize(const TPoint< Type > &origin, const TSize< Type > &size)
Definition: rect.h:144
impeller::TRect< Scalar >::MakeXYWH
constexpr static TRect MakeXYWH(Type x, Type y, Type width, Type height)
Definition: rect.h:136
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
text_contents.h
texture_contents.h
texture_descriptor.h
tiled_texture_contents.h
vector.h
vertex_buffer_builder.h
widgets.h