Flutter Impeller
content_context.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 "impeller/entity/contents/content_context.h"
6 
7 #include <memory>
8 
9 #include "impeller/base/strings.h"
10 #include "impeller/core/formats.h"
11 #include "impeller/entity/contents/framebuffer_blend_contents.h"
12 #include "impeller/entity/entity.h"
13 #include "impeller/entity/render_target_cache.h"
14 #include "impeller/renderer/command_buffer.h"
15 #include "impeller/renderer/pipeline_descriptor.h"
16 #include "impeller/renderer/pipeline_library.h"
17 #include "impeller/renderer/render_target.h"
18 #include "impeller/tessellator/tessellator.h"
19 #include "impeller/typographer/typographer_context.h"
20 
21 namespace impeller {
22 
23 void ContentContextOptions::ApplyToPipelineDescriptor(
24  PipelineDescriptor& desc) const {
25  auto pipeline_blend = blend_mode;
26  if (blend_mode > Entity::kLastPipelineBlendMode) {
27  VALIDATION_LOG << "Cannot use blend mode " << static_cast<int>(blend_mode)
28  << " as a pipeline blend.";
29  pipeline_blend = BlendMode::kSourceOver;
30  }
31 
32  desc.SetSampleCount(sample_count);
33 
34  ColorAttachmentDescriptor color0 = *desc.GetColorAttachmentDescriptor(0u);
35  color0.format = color_attachment_pixel_format;
36  color0.alpha_blend_op = BlendOperation::kAdd;
37  color0.color_blend_op = BlendOperation::kAdd;
38 
39  switch (pipeline_blend) {
40  case BlendMode::kClear:
41  if (is_for_rrect_blur_clear) {
42  color0.alpha_blend_op = BlendOperation::kReverseSubtract;
43  color0.color_blend_op = BlendOperation::kReverseSubtract;
44  color0.dst_alpha_blend_factor = BlendFactor::kOne;
45  color0.dst_color_blend_factor = BlendFactor::kOne;
46  color0.src_alpha_blend_factor = BlendFactor::kDestinationColor;
47  color0.src_color_blend_factor = BlendFactor::kDestinationColor;
48  } else {
49  color0.dst_alpha_blend_factor = BlendFactor::kZero;
50  color0.dst_color_blend_factor = BlendFactor::kZero;
51  color0.src_alpha_blend_factor = BlendFactor::kZero;
52  color0.src_color_blend_factor = BlendFactor::kZero;
53  }
54  break;
55  case BlendMode::kSource:
56  color0.blending_enabled = false;
57  color0.dst_alpha_blend_factor = BlendFactor::kZero;
58  color0.dst_color_blend_factor = BlendFactor::kZero;
59  color0.src_alpha_blend_factor = BlendFactor::kOne;
60  color0.src_color_blend_factor = BlendFactor::kOne;
61  break;
62  case BlendMode::kDestination:
63  color0.dst_alpha_blend_factor = BlendFactor::kOne;
64  color0.dst_color_blend_factor = BlendFactor::kOne;
65  color0.src_alpha_blend_factor = BlendFactor::kZero;
66  color0.src_color_blend_factor = BlendFactor::kZero;
67  break;
68  case BlendMode::kSourceOver:
69  color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
70  color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
71  color0.src_alpha_blend_factor = BlendFactor::kOne;
72  color0.src_color_blend_factor = BlendFactor::kOne;
73  break;
74  case BlendMode::kDestinationOver:
75  color0.dst_alpha_blend_factor = BlendFactor::kOne;
76  color0.dst_color_blend_factor = BlendFactor::kOne;
77  color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
78  color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
79  break;
80  case BlendMode::kSourceIn:
81  color0.dst_alpha_blend_factor = BlendFactor::kZero;
82  color0.dst_color_blend_factor = BlendFactor::kZero;
83  color0.src_alpha_blend_factor = BlendFactor::kDestinationAlpha;
84  color0.src_color_blend_factor = BlendFactor::kDestinationAlpha;
85  break;
86  case BlendMode::kDestinationIn:
87  color0.dst_alpha_blend_factor = BlendFactor::kSourceAlpha;
88  color0.dst_color_blend_factor = BlendFactor::kSourceAlpha;
89  color0.src_alpha_blend_factor = BlendFactor::kZero;
90  color0.src_color_blend_factor = BlendFactor::kZero;
91  break;
92  case BlendMode::kSourceOut:
93  color0.dst_alpha_blend_factor = BlendFactor::kZero;
94  color0.dst_color_blend_factor = BlendFactor::kZero;
95  color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
96  color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
97  break;
98  case BlendMode::kDestinationOut:
99  color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
100  color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
101  color0.src_alpha_blend_factor = BlendFactor::kZero;
102  color0.src_color_blend_factor = BlendFactor::kZero;
103  break;
104  case BlendMode::kSourceATop:
105  color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
106  color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
107  color0.src_alpha_blend_factor = BlendFactor::kDestinationAlpha;
108  color0.src_color_blend_factor = BlendFactor::kDestinationAlpha;
109  break;
110  case BlendMode::kDestinationATop:
111  color0.dst_alpha_blend_factor = BlendFactor::kSourceAlpha;
112  color0.dst_color_blend_factor = BlendFactor::kSourceAlpha;
113  color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
114  color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
115  break;
116  case BlendMode::kXor:
117  color0.dst_alpha_blend_factor = BlendFactor::kOneMinusSourceAlpha;
118  color0.dst_color_blend_factor = BlendFactor::kOneMinusSourceAlpha;
119  color0.src_alpha_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
120  color0.src_color_blend_factor = BlendFactor::kOneMinusDestinationAlpha;
121  break;
122  case BlendMode::kPlus:
123  color0.dst_alpha_blend_factor = BlendFactor::kOne;
124  color0.dst_color_blend_factor = BlendFactor::kOne;
125  color0.src_alpha_blend_factor = BlendFactor::kOne;
126  color0.src_color_blend_factor = BlendFactor::kOne;
127  break;
128  case BlendMode::kModulate:
129  color0.dst_alpha_blend_factor = BlendFactor::kSourceAlpha;
130  color0.dst_color_blend_factor = BlendFactor::kSourceColor;
131  color0.src_alpha_blend_factor = BlendFactor::kZero;
132  color0.src_color_blend_factor = BlendFactor::kZero;
133  break;
134  default:
135  FML_UNREACHABLE();
136  }
137  desc.SetColorAttachmentDescriptor(0u, color0);
138 
139  if (!has_stencil_attachment) {
140  desc.ClearStencilAttachments();
141  }
142 
143  auto maybe_stencil = desc.GetFrontStencilAttachmentDescriptor();
144  if (maybe_stencil.has_value()) {
145  StencilAttachmentDescriptor stencil = maybe_stencil.value();
146  stencil.stencil_compare = stencil_compare;
147  stencil.depth_stencil_pass = stencil_operation;
148  desc.SetStencilAttachmentDescriptors(stencil);
149  }
150 
151  desc.SetPrimitiveType(primitive_type);
152 
153  desc.SetPolygonMode(wireframe ? PolygonMode::kLine : PolygonMode::kFill);
154 }
155 
156 template <typename PipelineT>
157 static std::unique_ptr<PipelineT> CreateDefaultPipeline(
158  const Context& context) {
159  auto desc = PipelineT::Builder::MakeDefaultPipelineDescriptor(context);
160  if (!desc.has_value()) {
161  return nullptr;
162  }
163  // Apply default ContentContextOptions to the descriptor.
164  const auto default_color_format =
165  context.GetCapabilities()->GetDefaultColorFormat();
166  ContentContextOptions{.sample_count = SampleCount::kCount4,
167  .primitive_type = PrimitiveType::kTriangleStrip,
168  .color_attachment_pixel_format = default_color_format}
169  .ApplyToPipelineDescriptor(*desc);
170  return std::make_unique<PipelineT>(context, desc);
171 }
172 
173 ContentContext::ContentContext(
174  std::shared_ptr<Context> context,
175  std::shared_ptr<TypographerContext> typographer_context,
176  std::shared_ptr<RenderTargetAllocator> render_target_allocator)
177  : context_(std::move(context)),
178  lazy_glyph_atlas_(
179  std::make_shared<LazyGlyphAtlas>(std::move(typographer_context))),
180  tessellator_(std::make_shared<Tessellator>()),
181 #if IMPELLER_ENABLE_3D
182  scene_context_(std::make_shared<scene::SceneContext>(context_)),
183 #endif // IMPELLER_ENABLE_3D
184  render_target_cache_(render_target_allocator == nullptr
185  ? std::make_shared<RenderTargetCache>(
186  context_->GetResourceAllocator())
187  : std::move(render_target_allocator)) {
188  if (!context_ || !context_->IsValid()) {
189  return;
190  }
191  auto options = ContentContextOptions{
192  .sample_count = SampleCount::kCount4,
193  .color_attachment_pixel_format =
194  context_->GetCapabilities()->GetDefaultColorFormat()};
195  auto options_trianglestrip = ContentContextOptions{
196  .sample_count = SampleCount::kCount4,
197  .primitive_type = PrimitiveType::kTriangleStrip,
198  .color_attachment_pixel_format =
199  context_->GetCapabilities()->GetDefaultColorFormat()};
200  const auto supports_decal = static_cast<Scalar>(
201  context_->GetCapabilities()->SupportsDecalSamplerAddressMode());
202 
203 #ifdef IMPELLER_DEBUG
204  checkerboard_pipelines_.CreateDefault(*context_, options);
205 #endif // IMPELLER_DEBUG
206 
207  solid_fill_pipelines_.CreateDefault(*context_, options);
208 
209  if (context_->GetCapabilities()->SupportsSSBO()) {
210  linear_gradient_ssbo_fill_pipelines_.CreateDefault(*context_, options);
211  radial_gradient_ssbo_fill_pipelines_.CreateDefault(*context_, options);
212  conical_gradient_ssbo_fill_pipelines_.CreateDefault(*context_, options);
213  sweep_gradient_ssbo_fill_pipelines_.CreateDefault(*context_, options);
214  } else {
215  linear_gradient_fill_pipelines_.CreateDefault(*context_, options);
216  radial_gradient_fill_pipelines_.CreateDefault(*context_, options);
217  conical_gradient_fill_pipelines_.CreateDefault(*context_, options);
218  sweep_gradient_fill_pipelines_.CreateDefault(*context_, options);
219  }
220 
221  if (context_->GetCapabilities()->SupportsFramebufferFetch()) {
222  framebuffer_blend_color_pipelines_.CreateDefault(
223  *context_, options_trianglestrip,
224  {static_cast<Scalar>(BlendSelectValues::kColor), supports_decal},
225  UseSubpassInput::kYes);
226  framebuffer_blend_colorburn_pipelines_.CreateDefault(
227  *context_, options_trianglestrip,
228  {static_cast<Scalar>(BlendSelectValues::kColorBurn), supports_decal},
229  UseSubpassInput::kYes);
230  framebuffer_blend_colordodge_pipelines_.CreateDefault(
231  *context_, options_trianglestrip,
232  {static_cast<Scalar>(BlendSelectValues::kColorDodge), supports_decal},
233  UseSubpassInput::kYes);
234  framebuffer_blend_darken_pipelines_.CreateDefault(
235  *context_, options_trianglestrip,
236  {static_cast<Scalar>(BlendSelectValues::kDarken), supports_decal},
237  UseSubpassInput::kYes);
238  framebuffer_blend_difference_pipelines_.CreateDefault(
239  *context_, options_trianglestrip,
240  {static_cast<Scalar>(BlendSelectValues::kDifference), supports_decal},
241  UseSubpassInput::kYes);
242  framebuffer_blend_exclusion_pipelines_.CreateDefault(
243  *context_, options_trianglestrip,
244  {static_cast<Scalar>(BlendSelectValues::kExclusion), supports_decal},
245  UseSubpassInput::kYes);
246  framebuffer_blend_hardlight_pipelines_.CreateDefault(
247  *context_, options_trianglestrip,
248  {static_cast<Scalar>(BlendSelectValues::kHardLight), supports_decal},
249  UseSubpassInput::kYes);
250  framebuffer_blend_hue_pipelines_.CreateDefault(
251  *context_, options_trianglestrip,
252  {static_cast<Scalar>(BlendSelectValues::kHue), supports_decal},
253  UseSubpassInput::kYes);
254  framebuffer_blend_lighten_pipelines_.CreateDefault(
255  *context_, options_trianglestrip,
256  {static_cast<Scalar>(BlendSelectValues::kLighten), supports_decal},
257  UseSubpassInput::kYes);
258  framebuffer_blend_luminosity_pipelines_.CreateDefault(
259  *context_, options_trianglestrip,
260  {static_cast<Scalar>(BlendSelectValues::kLuminosity), supports_decal},
261  UseSubpassInput::kYes);
262  framebuffer_blend_multiply_pipelines_.CreateDefault(
263  *context_, options_trianglestrip,
264  {static_cast<Scalar>(BlendSelectValues::kMultiply), supports_decal},
265  UseSubpassInput::kYes);
266  framebuffer_blend_overlay_pipelines_.CreateDefault(
267  *context_, options_trianglestrip,
268  {static_cast<Scalar>(BlendSelectValues::kOverlay), supports_decal},
269  UseSubpassInput::kYes);
270  framebuffer_blend_saturation_pipelines_.CreateDefault(
271  *context_, options_trianglestrip,
272  {static_cast<Scalar>(BlendSelectValues::kSaturation), supports_decal},
273  UseSubpassInput::kYes);
274  framebuffer_blend_screen_pipelines_.CreateDefault(
275  *context_, options_trianglestrip,
276  {static_cast<Scalar>(BlendSelectValues::kScreen), supports_decal},
277  UseSubpassInput::kYes);
278  framebuffer_blend_softlight_pipelines_.CreateDefault(
279  *context_, options_trianglestrip,
280  {static_cast<Scalar>(BlendSelectValues::kSoftLight), supports_decal},
281  UseSubpassInput::kYes);
282  }
283 
284  blend_color_pipelines_.CreateDefault(
285  *context_, options_trianglestrip,
286  {static_cast<Scalar>(BlendSelectValues::kColor), supports_decal});
287  blend_colorburn_pipelines_.CreateDefault(
288  *context_, options_trianglestrip,
289  {static_cast<Scalar>(BlendSelectValues::kColorBurn), supports_decal});
290  blend_colordodge_pipelines_.CreateDefault(
291  *context_, options_trianglestrip,
292  {static_cast<Scalar>(BlendSelectValues::kColorDodge), supports_decal});
293  blend_darken_pipelines_.CreateDefault(
294  *context_, options_trianglestrip,
295  {static_cast<Scalar>(BlendSelectValues::kDarken), supports_decal});
296  blend_difference_pipelines_.CreateDefault(
297  *context_, options_trianglestrip,
298  {static_cast<Scalar>(BlendSelectValues::kDifference), supports_decal});
299  blend_exclusion_pipelines_.CreateDefault(
300  *context_, options_trianglestrip,
301  {static_cast<Scalar>(BlendSelectValues::kExclusion), supports_decal});
302  blend_hardlight_pipelines_.CreateDefault(
303  *context_, options_trianglestrip,
304  {static_cast<Scalar>(BlendSelectValues::kHardLight), supports_decal});
305  blend_hue_pipelines_.CreateDefault(
306  *context_, options_trianglestrip,
307  {static_cast<Scalar>(BlendSelectValues::kHue), supports_decal});
308  blend_lighten_pipelines_.CreateDefault(
309  *context_, options_trianglestrip,
310  {static_cast<Scalar>(BlendSelectValues::kLighten), supports_decal});
311  blend_luminosity_pipelines_.CreateDefault(
312  *context_, options_trianglestrip,
313  {static_cast<Scalar>(BlendSelectValues::kLuminosity), supports_decal});
314  blend_multiply_pipelines_.CreateDefault(
315  *context_, options_trianglestrip,
316  {static_cast<Scalar>(BlendSelectValues::kMultiply), supports_decal});
317  blend_overlay_pipelines_.CreateDefault(
318  *context_, options_trianglestrip,
319  {static_cast<Scalar>(BlendSelectValues::kOverlay), supports_decal});
320  blend_saturation_pipelines_.CreateDefault(
321  *context_, options_trianglestrip,
322  {static_cast<Scalar>(BlendSelectValues::kSaturation), supports_decal});
323  blend_screen_pipelines_.CreateDefault(
324  *context_, options_trianglestrip,
325  {static_cast<Scalar>(BlendSelectValues::kScreen), supports_decal});
326  blend_softlight_pipelines_.CreateDefault(
327  *context_, options_trianglestrip,
328  {static_cast<Scalar>(BlendSelectValues::kSoftLight), supports_decal});
329 
330  rrect_blur_pipelines_.CreateDefault(*context_, options_trianglestrip);
331  texture_blend_pipelines_.CreateDefault(*context_, options);
332  texture_pipelines_.CreateDefault(*context_, options);
333  position_uv_pipelines_.CreateDefault(*context_, options);
334  tiled_texture_pipelines_.CreateDefault(*context_, options);
335  gaussian_blur_noalpha_decal_pipelines_.CreateDefault(*context_,
336  options_trianglestrip);
337  gaussian_blur_noalpha_nodecal_pipelines_.CreateDefault(*context_,
338  options_trianglestrip);
339  kernel_decal_pipelines_.CreateDefault(*context_, options_trianglestrip);
340  kernel_nodecal_pipelines_.CreateDefault(*context_, options_trianglestrip);
341  border_mask_blur_pipelines_.CreateDefault(*context_, options_trianglestrip);
342  morphology_filter_pipelines_.CreateDefault(*context_, options_trianglestrip,
343  {supports_decal});
344  color_matrix_color_filter_pipelines_.CreateDefault(*context_,
345  options_trianglestrip);
346  linear_to_srgb_filter_pipelines_.CreateDefault(*context_,
347  options_trianglestrip);
348  srgb_to_linear_filter_pipelines_.CreateDefault(*context_,
349  options_trianglestrip);
350  glyph_atlas_pipelines_.CreateDefault(*context_, options);
351  glyph_atlas_color_pipelines_.CreateDefault(*context_, options);
352  geometry_color_pipelines_.CreateDefault(*context_, options);
353  yuv_to_rgb_filter_pipelines_.CreateDefault(*context_, options_trianglestrip);
354  porter_duff_blend_pipelines_.CreateDefault(*context_, options_trianglestrip,
355  {supports_decal});
356  // GLES only shader that is unsupported on macOS.
357 #if defined(IMPELLER_ENABLE_OPENGLES) && !defined(FML_OS_MACOSX)
358  if (GetContext()->GetBackendType() == Context::BackendType::kOpenGLES) {
359  texture_external_pipelines_.CreateDefault(*context_, options);
360  }
361  if (GetContext()->GetBackendType() == Context::BackendType::kOpenGLES) {
362  tiled_texture_external_pipelines_.CreateDefault(*context_, options);
363  }
364 #endif // IMPELLER_ENABLE_OPENGLES
365  if (context_->GetCapabilities()->SupportsCompute()) {
366  auto pipeline_desc =
367  PointsComputeShaderPipeline::MakeDefaultPipelineDescriptor(*context_);
368  point_field_compute_pipelines_ =
369  context_->GetPipelineLibrary()->GetPipeline(pipeline_desc).Get();
370 
371  auto uv_pipeline_desc =
372  UvComputeShaderPipeline::MakeDefaultPipelineDescriptor(*context_);
373  uv_compute_pipelines_ =
374  context_->GetPipelineLibrary()->GetPipeline(uv_pipeline_desc).Get();
375  }
376 
377  /// Setup default clip pipeline.
378 
379  auto clip_pipeline_descriptor =
380  ClipPipeline::Builder::MakeDefaultPipelineDescriptor(*context_);
381  if (!clip_pipeline_descriptor.has_value()) {
382  return;
383  }
384  ContentContextOptions{
385  .sample_count = SampleCount::kCount4,
386  .color_attachment_pixel_format =
387  context_->GetCapabilities()->GetDefaultColorFormat()}
388  .ApplyToPipelineDescriptor(*clip_pipeline_descriptor);
389  // Disable write to all color attachments.
390  auto clip_color_attachments =
391  clip_pipeline_descriptor->GetColorAttachmentDescriptors();
392  for (auto& color_attachment : clip_color_attachments) {
393  color_attachment.second.write_mask =
394  static_cast<uint64_t>(ColorWriteMask::kNone);
395  }
396  clip_pipeline_descriptor->SetColorAttachmentDescriptors(
397  std::move(clip_color_attachments));
398  clip_pipelines_.SetDefault(options, std::make_unique<ClipPipeline>(
399  *context_, clip_pipeline_descriptor));
400 
401  is_valid_ = true;
402 }
403 
404 ContentContext::~ContentContext() = default;
405 
406 bool ContentContext::IsValid() const {
407  return is_valid_;
408 }
409 
410 fml::StatusOr<RenderTarget> ContentContext::MakeSubpass(
411  const std::string& label,
412  ISize texture_size,
413  const SubpassCallback& subpass_callback,
414  bool msaa_enabled) const {
415  std::shared_ptr<Context> context = GetContext();
416  RenderTarget subpass_target;
417  if (context->GetCapabilities()->SupportsOffscreenMSAA() && msaa_enabled) {
418  subpass_target = RenderTarget::CreateOffscreenMSAA(
419  *context, *GetRenderTargetCache(), texture_size,
420  SPrintF("%s Offscreen", label.c_str()),
421  RenderTarget::kDefaultColorAttachmentConfigMSAA,
422  std::nullopt // stencil_attachment_config
423  );
424  } else {
425  subpass_target = RenderTarget::CreateOffscreen(
426  *context, *GetRenderTargetCache(), texture_size,
427  SPrintF("%s Offscreen", label.c_str()),
428  RenderTarget::kDefaultColorAttachmentConfig, //
429  std::nullopt // stencil_attachment_config
430  );
431  }
432  return MakeSubpass(label, subpass_target, subpass_callback);
433 }
434 
435 fml::StatusOr<RenderTarget> ContentContext::MakeSubpass(
436  const std::string& label,
437  const RenderTarget& subpass_target,
438  const SubpassCallback& subpass_callback) const {
439  std::shared_ptr<Context> context = GetContext();
440 
441  auto subpass_texture = subpass_target.GetRenderTargetTexture();
442  if (!subpass_texture) {
443  return fml::Status(fml::StatusCode::kUnknown, "");
444  }
445 
446  auto sub_command_buffer = context->CreateCommandBuffer();
447  sub_command_buffer->SetLabel(SPrintF("%s CommandBuffer", label.c_str()));
448  if (!sub_command_buffer) {
449  return fml::Status(fml::StatusCode::kUnknown, "");
450  }
451 
452  auto sub_renderpass = sub_command_buffer->CreateRenderPass(subpass_target);
453  if (!sub_renderpass) {
454  return fml::Status(fml::StatusCode::kUnknown, "");
455  }
456  sub_renderpass->SetLabel(SPrintF("%s RenderPass", label.c_str()));
457 
458  if (!subpass_callback(*this, *sub_renderpass)) {
459  return fml::Status(fml::StatusCode::kUnknown, "");
460  }
461 
462  if (!sub_command_buffer->EncodeAndSubmit(sub_renderpass)) {
463  return fml::Status(fml::StatusCode::kUnknown, "");
464  }
465 
466  return subpass_target;
467 }
468 
469 #if IMPELLER_ENABLE_3D
470 std::shared_ptr<scene::SceneContext> ContentContext::GetSceneContext() const {
471  return scene_context_;
472 }
473 #endif // IMPELLER_ENABLE_3D
474 
475 std::shared_ptr<Tessellator> ContentContext::GetTessellator() const {
476  return tessellator_;
477 }
478 
479 std::shared_ptr<Context> ContentContext::GetContext() const {
480  return context_;
481 }
482 
483 const Capabilities& ContentContext::GetDeviceCapabilities() const {
484  return *context_->GetCapabilities();
485 }
486 
487 void ContentContext::SetWireframe(bool wireframe) {
488  wireframe_ = wireframe;
489 }
490 
491 } // namespace impeller
impeller::PipelineDescriptor
Definition: pipeline_descriptor.h:29
impeller::BlendSelectValues::kSaturation
@ kSaturation
impeller::ColorAttachmentDescriptor::src_color_blend_factor
BlendFactor src_color_blend_factor
Definition: formats.h:498
impeller::PipelineDescriptor::SetPolygonMode
void SetPolygonMode(PolygonMode mode)
Definition: pipeline_descriptor.cc:278
impeller::kColor
@ kColor
impeller::Entity::kLastPipelineBlendMode
static constexpr BlendMode kLastPipelineBlendMode
Definition: entity.h:23
impeller::BlendMode::kDestinationATop
@ kDestinationATop
impeller::Scalar
float Scalar
Definition: scalar.h:18
impeller::BlendSelectValues::kColorBurn
@ kColorBurn
impeller::RenderTarget::kDefaultColorAttachmentConfig
static constexpr AttachmentConfig kDefaultColorAttachmentConfig
Definition: render_target.h:66
impeller::StencilAttachmentDescriptor::stencil_compare
CompareFunction stencil_compare
Definition: formats.h:593
impeller::ContentContext::ContentContext
ContentContext(std::shared_ptr< Context > context, std::shared_ptr< TypographerContext > typographer_context, std::shared_ptr< RenderTargetAllocator > render_target_allocator=nullptr)
Definition: content_context.cc:173
impeller::BlendSelectValues::kMultiply
@ kMultiply
impeller::PipelineDescriptor::SetStencilAttachmentDescriptors
PipelineDescriptor & SetStencilAttachmentDescriptors(std::optional< StencilAttachmentDescriptor > front_and_back)
Definition: pipeline_descriptor.cc:159
entity.h
impeller::PipelineDescriptor::SetColorAttachmentDescriptor
PipelineDescriptor & SetColorAttachmentDescriptor(size_t index, ColorAttachmentDescriptor desc)
Definition: pipeline_descriptor.cc:112
impeller::Tessellator
A utility that generates triangles of the specified fill type given a polyline. This happens on the C...
Definition: tessellator.h:39
impeller::BlendFactor::kOneMinusSourceAlpha
@ kOneMinusSourceAlpha
impeller::Context::GetCapabilities
virtual const std::shared_ptr< const Capabilities > & GetCapabilities() const =0
Get the capabilities of Impeller context. All optionally supported feature of the platform,...
impeller::PipelineDescriptor::GetColorAttachmentDescriptor
const ColorAttachmentDescriptor * GetColorAttachmentDescriptor(size_t index) const
Definition: pipeline_descriptor.cc:126
impeller::BlendMode::kSource
@ kSource
impeller::PipelineDescriptor::SetPrimitiveType
void SetPrimitiveType(PrimitiveType type)
Definition: pipeline_descriptor.cc:270
impeller::ContentContext::MakeSubpass
fml::StatusOr< RenderTarget > MakeSubpass(const std::string &label, ISize texture_size, const SubpassCallback &subpass_callback, bool msaa_enabled=true) const
Creates a new texture of size texture_size and calls subpass_callback with a RenderPass for drawing t...
Definition: content_context.cc:410
impeller::BlendMode::kDestination
@ kDestination
impeller::RenderTarget::kDefaultColorAttachmentConfigMSAA
static constexpr AttachmentConfigMSAA kDefaultColorAttachmentConfigMSAA
Definition: render_target.h:72
formats.h
impeller::ColorAttachmentDescriptor::alpha_blend_op
BlendOperation alpha_blend_op
Definition: formats.h:503
impeller::BlendMode::kDestinationOver
@ kDestinationOver
impeller::BlendMode::kPlus
@ kPlus
impeller::BlendSelectValues::kSoftLight
@ kSoftLight
impeller::ContentContextOptions::blend_mode
BlendMode blend_mode
Definition: content_context.h:278
typographer_context.h
impeller::BlendFactor::kDestinationAlpha
@ kDestinationAlpha
impeller::BlendSelectValues::kDifference
@ kDifference
impeller::ContentContextOptions::ApplyToPipelineDescriptor
void ApplyToPipelineDescriptor(PipelineDescriptor &desc) const
Definition: content_context.cc:23
framebuffer_blend_contents.h
impeller::BlendMode::kModulate
@ kModulate
impeller::PolygonMode::kFill
@ kFill
impeller::ContentContextOptions::wireframe
bool wireframe
Definition: content_context.h:284
impeller::BlendFactor::kSourceColor
@ kSourceColor
impeller::BlendMode::kSourceOut
@ kSourceOut
tessellator.h
impeller::BlendFactor::kDestinationColor
@ kDestinationColor
impeller::ContentContextOptions::stencil_compare
CompareFunction stencil_compare
Definition: content_context.h:279
impeller::BlendSelectValues::kDarken
@ kDarken
impeller::BlendSelectValues::kExclusion
@ kExclusion
impeller::BlendFactor::kZero
@ kZero
impeller::Capabilities
Definition: capabilities.h:15
impeller::TSize< int64_t >
impeller::PrimitiveType::kTriangleStrip
@ kTriangleStrip
impeller::ComputePipelineBuilder::MakeDefaultPipelineDescriptor
static std::optional< ComputePipelineDescriptor > MakeDefaultPipelineDescriptor(const Context &context)
Create a default pipeline descriptor using the combination reflected shader information....
Definition: compute_pipeline_builder.h:40
impeller::ContentContextOptions::color_attachment_pixel_format
PixelFormat color_attachment_pixel_format
Definition: content_context.h:282
impeller::ContentContext::~ContentContext
~ContentContext()
impeller::RenderTarget::GetRenderTargetTexture
std::shared_ptr< Texture > GetRenderTargetTexture() const
Definition: render_target.cc:155
impeller::BlendOperation::kReverseSubtract
@ kReverseSubtract
impeller::Context::BackendType::kOpenGLES
@ kOpenGLES
impeller::SPrintF
std::string SPrintF(const char *format,...)
Definition: strings.cc:12
impeller::BlendMode::kClear
@ kClear
impeller::ContentContext::GetContext
std::shared_ptr< Context > GetContext() const
Definition: content_context.cc:479
impeller::BlendOperation::kAdd
@ kAdd
impeller::ColorWriteMask::kNone
@ kNone
impeller::ContentContext::GetRenderTargetCache
std::shared_ptr< RenderTargetAllocator > GetRenderTargetCache() const
Definition: content_context.h:728
impeller::ColorAttachmentDescriptor::format
PixelFormat format
Definition: formats.h:495
impeller::StencilAttachmentDescriptor::depth_stencil_pass
StencilOperation depth_stencil_pass
Definition: formats.h:606
impeller::RenderTarget
Definition: render_target.h:49
impeller::ContentContextOptions::has_stencil_attachment
bool has_stencil_attachment
Definition: content_context.h:283
impeller::BlendFactor::kOne
@ kOne
impeller::ContentContextOptions::is_for_rrect_blur_clear
bool is_for_rrect_blur_clear
Definition: content_context.h:285
strings.h
impeller::ContentContext::GetTessellator
std::shared_ptr< Tessellator > GetTessellator() const
Definition: content_context.cc:475
impeller::ContentContextOptions::primitive_type
PrimitiveType primitive_type
Definition: content_context.h:281
pipeline_library.h
impeller::ContentContext::SubpassCallback
std::function< bool(const ContentContext &, RenderPass &)> SubpassCallback
Definition: content_context.h:708
impeller::PipelineDescriptor::SetSampleCount
PipelineDescriptor & SetSampleCount(SampleCount samples)
Definition: pipeline_descriptor.cc:78
impeller::ColorAttachmentDescriptor::src_alpha_blend_factor
BlendFactor src_alpha_blend_factor
Definition: formats.h:502
impeller::RenderTarget::CreateOffscreen
static RenderTarget CreateOffscreen(const Context &context, RenderTargetAllocator &allocator, ISize size, const std::string &label="Offscreen", AttachmentConfig color_attachment_config=kDefaultColorAttachmentConfig, std::optional< AttachmentConfig > stencil_attachment_config=kDefaultStencilAttachmentConfig)
Definition: render_target.cc:223
impeller::BlendMode::kDestinationIn
@ kDestinationIn
VALIDATION_LOG
#define VALIDATION_LOG
Definition: validation.h:67
command_buffer.h
impeller::ColorAttachmentDescriptor::dst_color_blend_factor
BlendFactor dst_color_blend_factor
Definition: formats.h:500
content_context.h
impeller::BlendMode::kDestinationOut
@ kDestinationOut
impeller::PipelineDescriptor::GetFrontStencilAttachmentDescriptor
std::optional< StencilAttachmentDescriptor > GetFrontStencilAttachmentDescriptor() const
Definition: pipeline_descriptor.cc:204
impeller::ColorAttachmentDescriptor::dst_alpha_blend_factor
BlendFactor dst_alpha_blend_factor
Definition: formats.h:504
impeller::ContentContext::GetDeviceCapabilities
const Capabilities & GetDeviceCapabilities() const
Definition: content_context.cc:483
impeller::Context
To do anything rendering related with Impeller, you need a context.
Definition: context.h:47
std
Definition: comparable.h:95
impeller::BlendSelectValues::kHardLight
@ kHardLight
impeller::ContentContextOptions::sample_count
SampleCount sample_count
Definition: content_context.h:277
impeller::BlendSelectValues::kScreen
@ kScreen
impeller::RenderTargetCache
An implementation of the [RenderTargetAllocator] that caches all allocated texture data for one frame...
Definition: render_target_cache.h:16
impeller::StencilAttachmentDescriptor
Definition: formats.h:587
impeller::BlendSelectValues::kLighten
@ kLighten
impeller::BlendMode::kSourceIn
@ kSourceIn
impeller::ContentContext::SetWireframe
void SetWireframe(bool wireframe)
Definition: content_context.cc:487
impeller::BlendSelectValues::kHue
@ kHue
impeller::SampleCount::kCount4
@ kCount4
impeller::PolygonMode::kLine
@ kLine
impeller::BlendSelectValues::kLuminosity
@ kLuminosity
impeller::UseSubpassInput::kYes
@ kYes
pipeline_descriptor.h
impeller::ColorAttachmentDescriptor::color_blend_op
BlendOperation color_blend_op
Definition: formats.h:499
render_target.h
impeller::BlendMode::kXor
@ kXor
impeller::PipelineBuilder::MakeDefaultPipelineDescriptor
static std::optional< PipelineDescriptor > MakeDefaultPipelineDescriptor(const Context &context, const std::vector< Scalar > &constants={})
Create a default pipeline descriptor using the combination reflected shader information....
Definition: pipeline_builder.h:51
render_target_cache.h
impeller::BlendFactor::kSourceAlpha
@ kSourceAlpha
impeller::ContentContextOptions
Definition: content_context.h:276
impeller::LazyGlyphAtlas
Definition: lazy_glyph_atlas.h:18
impeller::PipelineDescriptor::ClearStencilAttachments
void ClearStencilAttachments()
Definition: pipeline_descriptor.cc:172
impeller
Definition: aiks_context.cc:10
impeller::ContentContext::IsValid
bool IsValid() const
Definition: content_context.cc:406
impeller::BlendMode::kSourceATop
@ kSourceATop
impeller::ColorAttachmentDescriptor::blending_enabled
bool blending_enabled
Definition: formats.h:496
impeller::RenderTarget::CreateOffscreenMSAA
static RenderTarget CreateOffscreenMSAA(const Context &context, RenderTargetAllocator &allocator, ISize size, const std::string &label="Offscreen MSAA", AttachmentConfigMSAA color_attachment_config=kDefaultColorAttachmentConfigMSAA, std::optional< AttachmentConfig > stencil_attachment_config=kDefaultStencilAttachmentConfig)
Definition: render_target.cc:265
impeller::BlendSelectValues::kColorDodge
@ kColorDodge
impeller::CreateDefaultPipeline
static std::unique_ptr< PipelineT > CreateDefaultPipeline(const Context &context)
Definition: content_context.cc:157
impeller::BlendMode::kSourceOver
@ kSourceOver
impeller::BlendSelectValues::kOverlay
@ kOverlay
impeller::BlendFactor::kOneMinusDestinationAlpha
@ kOneMinusDestinationAlpha
impeller::ContentContextOptions::stencil_operation
StencilOperation stencil_operation
Definition: content_context.h:280
impeller::ColorAttachmentDescriptor
Describe the color attachment that will be used with this pipeline.
Definition: formats.h:494