| Flutter Impeller |

canvas_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 <unordered_map>
6
7 #include "flutter/display_list/dl_tile_mode.h"
8 #include "flutter/display_list/effects/dl_image_filter.h"
9 #include "flutter/display_list/geometry/dl_geometry_types.h"
10 #include "flutter/testing/testing.h"
11 #include "gtest/gtest.h"
12 #include "impeller/core/formats.h"
13 #include "impeller/core/texture_descriptor.h"
14 #include "impeller/display_list/aiks_unittests.h"
15 #include "impeller/display_list/canvas.h"
16 #include "impeller/display_list/dl_vertices_geometry.h"
17 #include "impeller/geometry/geometry_asserts.h"
18 #include "impeller/playground/playground.h"
19 #include "impeller/playground/widgets.h"
20 #include "impeller/renderer/render_target.h"
21
22 namespace impeller {
23 namespace testing {
24
25 std::unique_ptr<Canvas> CreateTestCanvas(
26 ContentContext& context,
27 std::optional<Rect> cull_rect = std::nullopt,
28 bool requires_readback = false) {
29 TextureDescriptor onscreen_desc;
30 onscreen_desc.size = {100, 100};
31 onscreen_desc.format =
32 context.GetDeviceCapabilities().GetDefaultColorFormat();
33 onscreen_desc.usage = TextureUsage::kRenderTarget;
34 onscreen_desc.storage_mode = StorageMode::kDevicePrivate;
35 onscreen_desc.sample_count = SampleCount::kCount1;
36 std::shared_ptr<Texture> onscreen =
37 context.GetContext()->GetResourceAllocator()->CreateTexture(
38 onscreen_desc);
39
40 ColorAttachment color0;
41 color0.load_action = LoadAction::kClear;
42 if (context.GetContext()->GetCapabilities()->SupportsOffscreenMSAA()) {
43 TextureDescriptor onscreen_msaa_desc = onscreen_desc;
44 onscreen_msaa_desc.sample_count = SampleCount::kCount4;
45 onscreen_msaa_desc.storage_mode = StorageMode::kDeviceTransient;
46 onscreen_msaa_desc.type = TextureType::kTexture2DMultisample;
47
48 std::shared_ptr<Texture> onscreen_msaa =
49 context.GetContext()->GetResourceAllocator()->CreateTexture(
50 onscreen_msaa_desc);
51 color0.resolve_texture = onscreen;
52 color0.texture = onscreen_msaa;
53 color0.store_action = StoreAction::kMultisampleResolve;
54 } else {
55 color0.texture = onscreen;
56 }
57
58 RenderTarget render_target;
59 render_target.SetColorAttachment(color0, 0);
60
61 if (cull_rect.has_value()) {
62 return std::make_unique<Canvas>(
63 context, render_target, /*is_onscreen=*/false,
64 /*requires_readback=*/requires_readback, cull_rect.value());
65 }
66 return std::make_unique<Canvas>(context, render_target, /*is_onscreen=*/false,
67 /*requires_readback=*/requires_readback);
68 }
69
70 TEST_P(AiksTest, TransformMultipliesCorrectly) {
71 ContentContext context(GetContext(), nullptr);
72 auto canvas = CreateTestCanvas(context);
73
74 ASSERT_MATRIX_NEAR(canvas->GetCurrentTransform(), Matrix());
75
76 // clang-format off
77 canvas->Translate(Vector3(100, 200));
78 ASSERT_MATRIX_NEAR(
79 canvas->GetCurrentTransform(),
80 Matrix( 1, 0, 0, 0,
81 0, 1, 0, 0,
82 0, 0, 1, 0,
83 100, 200, 0, 1));
84
85 canvas->Rotate(Radians(kPiOver2));
86 ASSERT_MATRIX_NEAR(
87 canvas->GetCurrentTransform(),
88 Matrix( 0, 1, 0, 0,
89 -1, 0, 0, 0,
90 0, 0, 1, 0,
91 100, 200, 0, 1));
92
93 canvas->Scale(Vector3(2, 3));
94 ASSERT_MATRIX_NEAR(
95 canvas->GetCurrentTransform(),
96 Matrix( 0, 2, 0, 0,
97 -3, 0, 0, 0,
98 0, 0, 0, 0,
99 100, 200, 0, 1));
100
101 canvas->Translate(Vector3(100, 200));
102 ASSERT_MATRIX_NEAR(
103 canvas->GetCurrentTransform(),
104 Matrix( 0, 2, 0, 0,
105 -3, 0, 0, 0,
106 0, 0, 0, 0,
107 -500, 400, 0, 1));
108 // clang-format on
109 }
110
111 TEST_P(AiksTest, CanvasCanPushPopCTM) {
112 ContentContext context(GetContext(), nullptr);
113 auto canvas = CreateTestCanvas(context);
114
115 ASSERT_EQ(canvas->GetSaveCount(), 1u);
116 ASSERT_EQ(canvas->Restore(), false);
117
118 canvas->Translate(Size{100, 100});
119 canvas->Save(10);
120 ASSERT_EQ(canvas->GetSaveCount(), 2u);
121 ASSERT_MATRIX_NEAR(canvas->GetCurrentTransform(),
122 Matrix::MakeTranslation({100.0, 100.0, 0.0}));
123 ASSERT_TRUE(canvas->Restore());
124 ASSERT_EQ(canvas->GetSaveCount(), 1u);
125 ASSERT_MATRIX_NEAR(canvas->GetCurrentTransform(),
126 Matrix::MakeTranslation({100.0, 100.0, 0.0}));
127 }
128
129 TEST_P(AiksTest, CanvasCTMCanBeUpdated) {
130 ContentContext context(GetContext(), nullptr);
131 auto canvas = CreateTestCanvas(context);
132
133 Matrix identity;
134 ASSERT_MATRIX_NEAR(canvas->GetCurrentTransform(), identity);
135 canvas->Translate(Size{100, 100});
136 ASSERT_MATRIX_NEAR(canvas->GetCurrentTransform(),
137 Matrix::MakeTranslation({100.0, 100.0, 0.0}));
138 }
139
140 TEST_P(AiksTest, BackdropCountDownNormal) {
141 ContentContext context(GetContext(), nullptr);
142 if (!context.GetDeviceCapabilities().SupportsFramebufferFetch()) {
143 GTEST_SKIP() << "Test requires device with framebuffer fetch";
144 }
145 auto canvas = CreateTestCanvas(context, Rect::MakeLTRB(0, 0, 100, 100),
146 /*requires_readback=*/true);
147 // 3 backdrop filters
148 canvas->SetBackdropData({}, 3);
149
150 auto blur =
151 flutter::DlImageFilter::MakeBlur(4, 4, flutter::DlTileMode::kClamp);
152 flutter::DlRect rect = flutter::DlRect::MakeLTRB(0, 0, 50, 50);
153
154 EXPECT_TRUE(canvas->RequiresReadback());
155 canvas->DrawRect(rect, {.color = Color::Azure()});
156 canvas->SaveLayer({}, rect, blur.get(),
157 ContentBoundsPromise::kContainsContents,
158 /*total_content_depth=*/1);
159 canvas->Restore();
160 EXPECT_TRUE(canvas->RequiresReadback());
161
162 canvas->SaveLayer({}, rect, blur.get(),
163 ContentBoundsPromise::kContainsContents,
164 /*total_content_depth=*/1);
165 canvas->Restore();
166 EXPECT_TRUE(canvas->RequiresReadback());
167
168 canvas->SaveLayer({}, rect, blur.get(),
169 ContentBoundsPromise::kContainsContents,
170 /*total_content_depth=*/1);
171 canvas->Restore();
172 EXPECT_FALSE(canvas->RequiresReadback());
173 }
174
175 TEST_P(AiksTest, BackdropCountDownBackdropId) {
176 ContentContext context(GetContext(), nullptr);
177 if (!context.GetDeviceCapabilities().SupportsFramebufferFetch()) {
178 GTEST_SKIP() << "Test requires device with framebuffer fetch";
179 }
180 auto canvas = CreateTestCanvas(context, Rect::MakeLTRB(0, 0, 100, 100),
181 /*requires_readback=*/true);
182 // 3 backdrop filters all with same id.
183 std::unordered_map<int64_t, BackdropData> data;
184 data[1] = BackdropData{.backdrop_count = 3};
185 canvas->SetBackdropData(data, 3);
186
187 auto blur =
188 flutter::DlImageFilter::MakeBlur(4, 4, flutter::DlTileMode::kClamp);
189
190 EXPECT_TRUE(canvas->RequiresReadback());
191 canvas->DrawRect(flutter::DlRect::MakeLTRB(0, 0, 50, 50),
192 {.color = Color::Azure()});
193 canvas->SaveLayer({}, std::nullopt, blur.get(),
194 ContentBoundsPromise::kContainsContents,
195 /*total_content_depth=*/1, /*can_distribute_opacity=*/false,
196 /*backdrop_id=*/1);
197 canvas->Restore();
198 EXPECT_FALSE(canvas->RequiresReadback());
199
200 canvas->SaveLayer({}, std::nullopt, blur.get(),
201 ContentBoundsPromise::kContainsContents,
202 /*total_content_depth=*/1, /*can_distribute_opacity=*/false,
203 /*backdrop_id=*/1);
204 canvas->Restore();
205 EXPECT_FALSE(canvas->RequiresReadback());
206
207 canvas->SaveLayer({}, std::nullopt, blur.get(),
208 ContentBoundsPromise::kContainsContents,
209 /*total_content_depth=*/1, /*can_distribute_opacity=*/false,
210 /*backdrop_id=*/1);
211 canvas->Restore();
212 EXPECT_FALSE(canvas->RequiresReadback());
213 }
214
215 TEST_P(AiksTest, BackdropCountDownBackdropIdMixed) {
216 ContentContext context(GetContext(), nullptr);
217 if (!context.GetDeviceCapabilities().SupportsFramebufferFetch()) {
218 GTEST_SKIP() << "Test requires device with framebuffer fetch";
219 }
220 auto canvas = CreateTestCanvas(context, Rect::MakeLTRB(0, 0, 100, 100),
221 /*requires_readback=*/true);
222 // 3 backdrop filters, 2 with same id.
223 std::unordered_map<int64_t, BackdropData> data;
224 data[1] = BackdropData{.backdrop_count = 2};
225 canvas->SetBackdropData(data, 3);
226
227 auto blur =
228 flutter::DlImageFilter::MakeBlur(4, 4, flutter::DlTileMode::kClamp);
229
230 EXPECT_TRUE(canvas->RequiresReadback());
231 canvas->DrawRect(flutter::DlRect::MakeLTRB(0, 0, 50, 50),
232 {.color = Color::Azure()});
233 canvas->SaveLayer({}, std::nullopt, blur.get(),
234 ContentBoundsPromise::kContainsContents, 1, false);
235 canvas->Restore();
236 EXPECT_TRUE(canvas->RequiresReadback());
237
238 canvas->SaveLayer({}, std::nullopt, blur.get(),
239 ContentBoundsPromise::kContainsContents, 1, false, 1);
240 canvas->Restore();
241 EXPECT_FALSE(canvas->RequiresReadback());
242
243 canvas->SaveLayer({}, std::nullopt, blur.get(),
244 ContentBoundsPromise::kContainsContents, 1, false, 1);
245 canvas->Restore();
246 EXPECT_FALSE(canvas->RequiresReadback());
247 }
248
249 // We only know the total number of backdrop filters, not the number of backdrop
250 // filters in the root pass. If we reach a count of 0 while in a nested
251 // saveLayer, we should not restore to the onscreen.
252 TEST_P(AiksTest, BackdropCountDownWithNestedSaveLayers) {
253 ContentContext context(GetContext(), nullptr);
254 if (!context.GetDeviceCapabilities().SupportsFramebufferFetch()) {
255 GTEST_SKIP() << "Test requires device with framebuffer fetch";
256 }
257 auto canvas = CreateTestCanvas(context, Rect::MakeLTRB(0, 0, 100, 100),
258 /*requires_readback=*/true);
259
260 canvas->SetBackdropData({}, 2);
261
262 auto blur =
263 flutter::DlImageFilter::MakeBlur(4, 4, flutter::DlTileMode::kClamp);
264
265 EXPECT_TRUE(canvas->RequiresReadback());
266 canvas->DrawRect(flutter::DlRect::MakeLTRB(0, 0, 50, 50),
267 {.color = Color::Azure()});
268 canvas->SaveLayer({}, std::nullopt, blur.get(),
269 ContentBoundsPromise::kContainsContents,
270 /*total_content_depth=*/3);
271
272 // This filter is nested in the first saveLayer. We cannot restore to onscreen
273 // here.
274 canvas->SaveLayer({}, std::nullopt, blur.get(),
275 ContentBoundsPromise::kContainsContents,
276 /*total_content_depth=*/1);
277 canvas->Restore();
278 EXPECT_TRUE(canvas->RequiresReadback());
279
280 canvas->Restore();
281 EXPECT_TRUE(canvas->RequiresReadback());
282 }
283
284 TEST_P(AiksTest, DrawVerticesLinearGradientWithEmptySize) {
285 RenderCallback callback = [&](RenderTarget& render_target) {
286 ContentContext context(GetContext(), nullptr);
287 Canvas canvas(context, render_target, true, false);
288
289 std::vector<flutter::DlPoint> vertex_coordinates = {
290 flutter::DlPoint(0, 0),
291 flutter::DlPoint(600, 0),
292 flutter::DlPoint(0, 600),
293 };
294 std::vector<flutter::DlPoint> texture_coordinates = {
295 flutter::DlPoint(0, 0),
296 flutter::DlPoint(500, 0),
297 flutter::DlPoint(0, 500),
298 };
299 std::vector<uint16_t> indices = {0, 1, 2};
300 flutter::DlVertices::Builder vertices_builder(
301 flutter::DlVertexMode::kTriangleStrip, vertex_coordinates.size(),
302 flutter::DlVertices::Builder::kHasTextureCoordinates, indices.size());
303 vertices_builder.store_vertices(vertex_coordinates.data());
304 vertices_builder.store_indices(indices.data());
305 vertices_builder.store_texture_coordinates(texture_coordinates.data());
306 auto vertices = vertices_builder.build();
307
308 // The start and end points of the gradient form an empty rectangle.
309 std::vector<flutter::DlColor> colors = {flutter::DlColor::kBlue(),
310 flutter::DlColor::kRed()};
311 std::vector<Scalar> stops = {0.0, 1.0};
312 auto gradient = flutter::DlColorSource::MakeLinear(
313 {0, 0}, {0, 600}, 2, colors.data(), stops.data(),
314 flutter::DlTileMode::kClamp);
315
316 Paint paint;
317 paint.color_source = gradient.get();
318 canvas.DrawVertices(std::make_shared<DlVerticesGeometry>(vertices, context),
319 BlendMode::kSrcOver, paint);
320
321 canvas.EndReplay();
322 return true;
323 };
324
325 ASSERT_TRUE(Playground::OpenPlaygroundHere(callback));
326 }
327
328 TEST_P(AiksTest, DrawVerticesWithEmptyTextureCoordinates) {
329 auto runtime_stages =
330 OpenAssetAsRuntimeStage("runtime_stage_simple.frag.iplr");
331
332 auto runtime_stage =
333 runtime_stages[PlaygroundBackendToRuntimeStageBackend(GetBackend())];
334 ASSERT_TRUE(runtime_stage);
335
336 auto runtime_effect = flutter::DlRuntimeEffect::MakeImpeller(runtime_stage);
337 auto uniform_data = std::make_shared<std::vector<uint8_t>>();
338 auto color_source = flutter::DlColorSource::MakeRuntimeEffect(
339 runtime_effect, {}, uniform_data);
340
341 RenderCallback callback = [&](RenderTarget& render_target) {
342 ContentContext context(GetContext(), nullptr);
343 Canvas canvas(context, render_target, true, false);
344
345 std::vector<flutter::DlPoint> vertex_coordinates = {
346 flutter::DlPoint(100, 100),
347 flutter::DlPoint(300, 100),
348 flutter::DlPoint(100, 300),
349 };
350 // The bounding box of the texture coordinates is empty.
351 std::vector<flutter::DlPoint> texture_coordinates = {
352 flutter::DlPoint(0, 0),
353 flutter::DlPoint(0, 100),
354 flutter::DlPoint(0, 0),
355 };
356 std::vector<uint16_t> indices = {0, 1, 2};
357 flutter::DlVertices::Builder vertices_builder(
358 flutter::DlVertexMode::kTriangleStrip, vertex_coordinates.size(),
359 flutter::DlVertices::Builder::kHasTextureCoordinates, indices.size());
360 vertices_builder.store_vertices(vertex_coordinates.data());
361 vertices_builder.store_indices(indices.data());
362 vertices_builder.store_texture_coordinates(texture_coordinates.data());
363 auto vertices = vertices_builder.build();
364
365 Paint paint;
366 paint.color_source = color_source.get();
367 canvas.DrawVertices(std::make_shared<DlVerticesGeometry>(vertices, context),
368 BlendMode::kSrcOver, paint);
369
370 canvas.EndReplay();
371 return true;
372 };
373
374 ASSERT_TRUE(Playground::OpenPlaygroundHere(callback));
375 }
376
377 TEST_P(AiksTest, SupportsBlitToOnscreen) {
378 ContentContext context(GetContext(), nullptr);
379 auto canvas = CreateTestCanvas(context, Rect::MakeLTRB(0, 0, 100, 100),
380 /*requires_readback=*/true);
381
382 if (GetBackend() != PlaygroundBackend::kMetal) {
383 EXPECT_FALSE(canvas->SupportsBlitToOnscreen());
384 } else {
385 EXPECT_TRUE(canvas->SupportsBlitToOnscreen());
386 }
387 }
388
389 TEST_P(AiksTest, RoundSuperellipseShadowComparison) {
390 // Config
391 Size default_size(600, 400);
392 Point left_center(400, 700);
393 Point right_center(1300, 700);
394 Color color = Color::Red();
395
396 // Convert `color` to a `color_source`. This forces
397 // `canvas.DrawRoundSuperellipse` to use the regular shadow algorithm
398 // (blurring) instead of the fast shadow algorithm.
399 std::shared_ptr<flutter::DlColorSource> color_source;
400 {
401 flutter::DlColor dl_color = flutter::DlColor(color.ToARGB());
402 std::vector<flutter::DlColor> colors = {dl_color, dl_color};
403 std::vector<Scalar> stops = {0.0, 1.0};
404 color_source = flutter::DlColorSource::MakeLinear(
405 {0, 0}, {1000, 1000}, 2, colors.data(), stops.data(),
406 flutter::DlTileMode::kClamp);
407 }
408
409 auto RectMakeCenterHalfSize = [](Point center, Point half_size) {
410 Size size(half_size.x * 2, half_size.y * 2);
411 return Rect::MakeOriginSize(center - half_size, size);
412 };
413
414 RenderCallback callback = [&](RenderTarget& render_target) {
415 ContentContext context(GetContext(), nullptr);
416 Canvas canvas(context, render_target, true, false);
417 // Somehow there's a scaling factor between PlaygroundPoint and Canvas.
418 Matrix ctm = Matrix::MakeScale(Vector2(1, 1) * 0.5);
419 Matrix i_ctm = ctm.Invert();
420
421 static Scalar sigma = 0.05;
422 static Scalar radius = 200;
423
424 // Define the ImGui
425 ImGui::Begin("Shadow", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
426 {
427 ImGui::SliderFloat("Sigma", &sigma, 0, 100);
428 ImGui::SliderFloat("Radius", &radius, 0, 1000);
429 }
430 ImGui::End();
431
432 static PlaygroundPoint right_reference_var(
433 ctm * (right_center + default_size / 2), 30, Color::White());
434 Point right_reference = i_ctm * DrawPlaygroundPoint(right_reference_var);
435 Point half_size = (right_reference - right_center).Abs();
436 Rect left_bounds = RectMakeCenterHalfSize(left_center, half_size);
437 Rect right_bounds = RectMakeCenterHalfSize(right_center, half_size);
438
439 Paint paint{
440 .color = color,
441 .mask_blur_descriptor =
442 Paint::MaskBlurDescriptor{
443 .sigma = Sigma(sigma),
444 },
445 };
446
447 // Left: Draw with canvas
448 canvas.DrawRoundSuperellipse(
449 RoundSuperellipse::MakeRectRadius(left_bounds, radius), paint);
450
451 // Right: Direct draw
452 paint.color_source = color_source.get();
453 canvas.DrawRoundSuperellipse(
454 RoundSuperellipse::MakeRectRadius(right_bounds, radius), paint);
455
456 canvas.EndReplay();
457 return true;
458 };
459
460 ASSERT_TRUE(Playground::OpenPlaygroundHere(callback));
461 }
462
463 } // namespace testing
464 } // namespace impeller
aiks_unittests.h
canvas.h
impeller::AiksPlayground
Definition: aiks_playground.h:16
impeller::Canvas
Definition: canvas.h:120
impeller::Canvas::DrawRoundSuperellipse
void DrawRoundSuperellipse(const RoundSuperellipse &rse, const Paint &paint)
Definition: canvas.cc:782
impeller::Canvas::DrawVertices
void DrawVertices(const std::shared_ptr< VerticesGeometry > &vertices, BlendMode blend_mode, const Paint &paint)
Definition: canvas.cc:1005
impeller::Canvas::EndReplay
void EndReplay()
Definition: canvas.cc:2093
impeller::Capabilities::SupportsFramebufferFetch
virtual bool SupportsFramebufferFetch() const =0
Whether the context backend is able to support pipelines with shaders that read from the framebuffer ...
impeller::Capabilities::GetDefaultColorFormat
virtual PixelFormat GetDefaultColorFormat() const =0
Returns a supported PixelFormat for textures that store 4-channel colors (red/green/blue/alpha).
impeller::ContentContext
Definition: content_context.h:138
impeller::ContentContext::GetDeviceCapabilities
const Capabilities & GetDeviceCapabilities() const
Definition: content_context.cc:943
impeller::ContentContext::GetContext
std::shared_ptr< Context > GetContext() const
Definition: content_context.cc:939
impeller::Playground::OpenPlaygroundHere
bool OpenPlaygroundHere(const RenderCallback &render_callback)
Definition: playground.cc:201
impeller::RenderTarget
Definition: render_target.h:38
impeller::RenderTarget::SetColorAttachment
RenderTarget & SetColorAttachment(const ColorAttachment &attachment, size_t index)
Definition: render_target.cc:199
formats.h
dl_vertices_geometry.h
geometry_asserts.h
ASSERT_MATRIX_NEAR
#define ASSERT_MATRIX_NEAR(a, b)
Definition: geometry_asserts.h:189
impeller::testing::CreateTestCanvas
std::unique_ptr< Canvas > CreateTestCanvas(ContentContext &context, std::optional< Rect > cull_rect=std::nullopt, bool requires_readback=false)
Definition: canvas_unittests.cc:25
impeller::testing::TEST_P
TEST_P(AiksTest, DrawAtlasNoColor)
Definition: aiks_dl_atlas_unittests.cc:60
impeller
Definition: allocation.cc:12
impeller::Vector2
Point Vector2
Definition: point.h:331
impeller::DlRect
flutter::DlRect DlRect
Definition: dl_dispatcher.h:25
impeller::Scalar
float Scalar
Definition: scalar.h:19
impeller::DrawPlaygroundPoint
Point DrawPlaygroundPoint(PlaygroundPoint &point)
Definition: widgets.cc:9
impeller::PlaygroundBackendToRuntimeStageBackend
constexpr RuntimeStageBackend PlaygroundBackendToRuntimeStageBackend(PlaygroundBackend backend)
Definition: playground.h:33
impeller::StorageMode::kDevicePrivate
@ kDevicePrivate
impeller::StorageMode::kDeviceTransient
@ kDeviceTransient
impeller::DlPoint
flutter::DlPoint DlPoint
Definition: dl_dispatcher.h:24
impeller::kPiOver2
constexpr float kPiOver2
Definition: constants.h:32
impeller::TextureType::kTexture2DMultisample
@ kTexture2DMultisample
impeller::BlendMode::kSrcOver
@ kSrcOver
impeller::ContentBoundsPromise::kContainsContents
@ kContainsContents
The caller claims the bounds are a reasonably tight estimate of the coverage of the contents and shou...
impeller::PlaygroundBackend::kMetal
@ kMetal
impeller::LoadAction::kClear
@ kClear
impeller::StoreAction::kMultisampleResolve
@ kMultisampleResolve
impeller::TextureUsage::kRenderTarget
@ kRenderTarget
impeller::SampleCount::kCount4
@ kCount4
impeller::SampleCount::kCount1
@ kCount1
playground.h
render_target.h
impeller::Attachment::resolve_texture
std::shared_ptr< Texture > resolve_texture
Definition: formats.h:658
impeller::Attachment::load_action
LoadAction load_action
Definition: formats.h:659
impeller::Attachment::texture
std::shared_ptr< Texture > texture
Definition: formats.h:657
impeller::Attachment::store_action
StoreAction store_action
Definition: formats.h:660
impeller::BackdropData
Definition: canvas.h:40
impeller::BackdropData::backdrop_count
size_t backdrop_count
Definition: canvas.h:41
impeller::ColorAttachment
Definition: formats.h:665
impeller::Color
Definition: color.h:124
impeller::Color::ToARGB
uint32_t ToARGB() const
Convert to ARGB 32 bit color.
Definition: color.h:259
impeller::Color::Azure
static constexpr Color Azure()
Definition: color.h:298
impeller::Color::White
static constexpr Color White()
Definition: color.h:264
impeller::Color::Red
static constexpr Color Red()
Definition: color.h:272
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::Invert
Matrix Invert() const
Definition: matrix.cc:99
impeller::Matrix::MakeScale
static constexpr Matrix MakeScale(const Vector3 &s)
Definition: matrix.h:104
impeller::Paint::MaskBlurDescriptor
Definition: paint.h:52
impeller::Paint::MaskBlurDescriptor::sigma
Sigma sigma
Definition: paint.h:54
impeller::Paint
Definition: paint.h:27
impeller::Paint::color_source
const flutter::DlColorSource * color_source
Definition: paint.h:76
impeller::Paint::color
Color color
Definition: paint.h:75
impeller::PlaygroundPoint
Definition: widgets.h:21
impeller::Radians
Definition: scalar.h:44
impeller::RoundSuperellipse::MakeRectRadius
static RoundSuperellipse MakeRectRadius(const Rect &rect, Scalar radius)
Definition: round_superellipse.h:29
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::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 >::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::usage
TextureUsageMask usage
Definition: texture_descriptor.h:44
impeller::TextureDescriptor::type
TextureType type
Definition: texture_descriptor.h:40
impeller::TextureDescriptor::size
ISize size
Definition: texture_descriptor.h:42
impeller::TextureDescriptor::storage_mode
StorageMode storage_mode
Definition: texture_descriptor.h:39
impeller::TextureDescriptor::sample_count
SampleCount sample_count
Definition: texture_descriptor.h:45
impeller::TextureDescriptor::format
PixelFormat format
Definition: texture_descriptor.h:41
impeller::Vector3
Definition: vector.h:20
texture_descriptor.h
data
std::shared_ptr< const fml::Mapping > data
Definition: texture_gles.cc:68
widgets.h