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 #include <sstream>
9 
10 #include "impeller/base/strings.h"
11 #include "impeller/core/formats.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_library.h"
16 #include "impeller/renderer/render_pass.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  .color_attachment_pixel_format = default_color_format}
168  .ApplyToPipelineDescriptor(*desc);
169  return std::make_unique<PipelineT>(context, desc);
170 }
171 
172 ContentContext::ContentContext(
173  std::shared_ptr<Context> context,
174  std::shared_ptr<TypographerContext> typographer_context,
175  std::shared_ptr<RenderTargetAllocator> render_target_allocator)
176  : context_(std::move(context)),
177  lazy_glyph_atlas_(
178  std::make_shared<LazyGlyphAtlas>(std::move(typographer_context))),
179  tessellator_(std::make_shared<Tessellator>()),
180 #if IMPELLER_ENABLE_3D
181  scene_context_(std::make_shared<scene::SceneContext>(context_)),
182 #endif // IMPELLER_ENABLE_3D
183  render_target_cache_(render_target_allocator == nullptr
184  ? std::make_shared<RenderTargetCache>(
185  context_->GetResourceAllocator())
186  : std::move(render_target_allocator)) {
187  if (!context_ || !context_->IsValid()) {
188  return;
189  }
190  default_options_ = ContentContextOptions{
191  .sample_count = SampleCount::kCount4,
192  .color_attachment_pixel_format =
193  context_->GetCapabilities()->GetDefaultColorFormat()};
194 
195 #ifdef IMPELLER_DEBUG
196  checkerboard_pipelines_[default_options_] =
197  CreateDefaultPipeline<CheckerboardPipeline>(*context_);
198 #endif // IMPELLER_DEBUG
199 
200  solid_fill_pipelines_[default_options_] =
201  CreateDefaultPipeline<SolidFillPipeline>(*context_);
202 
203  if (context_->GetCapabilities()->SupportsSSBO()) {
204  linear_gradient_ssbo_fill_pipelines_[default_options_] =
205  CreateDefaultPipeline<LinearGradientSSBOFillPipeline>(*context_);
206  radial_gradient_ssbo_fill_pipelines_[default_options_] =
207  CreateDefaultPipeline<RadialGradientSSBOFillPipeline>(*context_);
208  conical_gradient_ssbo_fill_pipelines_[default_options_] =
209  CreateDefaultPipeline<ConicalGradientSSBOFillPipeline>(*context_);
210  sweep_gradient_ssbo_fill_pipelines_[default_options_] =
211  CreateDefaultPipeline<SweepGradientSSBOFillPipeline>(*context_);
212  } else {
213  linear_gradient_fill_pipelines_[default_options_] =
214  CreateDefaultPipeline<LinearGradientFillPipeline>(*context_);
215  radial_gradient_fill_pipelines_[default_options_] =
216  CreateDefaultPipeline<RadialGradientFillPipeline>(*context_);
217  conical_gradient_fill_pipelines_[default_options_] =
218  CreateDefaultPipeline<ConicalGradientFillPipeline>(*context_);
219  sweep_gradient_fill_pipelines_[default_options_] =
220  CreateDefaultPipeline<SweepGradientFillPipeline>(*context_);
221  }
222 
223  if (context_->GetCapabilities()->SupportsFramebufferFetch()) {
224  framebuffer_blend_color_pipelines_[default_options_] =
225  CreateDefaultPipeline<FramebufferBlendColorPipeline>(*context_);
226  framebuffer_blend_colorburn_pipelines_[default_options_] =
227  CreateDefaultPipeline<FramebufferBlendColorBurnPipeline>(*context_);
228  framebuffer_blend_colordodge_pipelines_[default_options_] =
229  CreateDefaultPipeline<FramebufferBlendColorDodgePipeline>(*context_);
230  framebuffer_blend_darken_pipelines_[default_options_] =
231  CreateDefaultPipeline<FramebufferBlendDarkenPipeline>(*context_);
232  framebuffer_blend_difference_pipelines_[default_options_] =
233  CreateDefaultPipeline<FramebufferBlendDifferencePipeline>(*context_);
234  framebuffer_blend_exclusion_pipelines_[default_options_] =
235  CreateDefaultPipeline<FramebufferBlendExclusionPipeline>(*context_);
236  framebuffer_blend_hardlight_pipelines_[default_options_] =
237  CreateDefaultPipeline<FramebufferBlendHardLightPipeline>(*context_);
238  framebuffer_blend_hue_pipelines_[default_options_] =
239  CreateDefaultPipeline<FramebufferBlendHuePipeline>(*context_);
240  framebuffer_blend_lighten_pipelines_[default_options_] =
241  CreateDefaultPipeline<FramebufferBlendLightenPipeline>(*context_);
242  framebuffer_blend_luminosity_pipelines_[default_options_] =
243  CreateDefaultPipeline<FramebufferBlendLuminosityPipeline>(*context_);
244  framebuffer_blend_multiply_pipelines_[default_options_] =
245  CreateDefaultPipeline<FramebufferBlendMultiplyPipeline>(*context_);
246  framebuffer_blend_overlay_pipelines_[default_options_] =
247  CreateDefaultPipeline<FramebufferBlendOverlayPipeline>(*context_);
248  framebuffer_blend_saturation_pipelines_[default_options_] =
249  CreateDefaultPipeline<FramebufferBlendSaturationPipeline>(*context_);
250  framebuffer_blend_screen_pipelines_[default_options_] =
251  CreateDefaultPipeline<FramebufferBlendScreenPipeline>(*context_);
252  framebuffer_blend_softlight_pipelines_[default_options_] =
253  CreateDefaultPipeline<FramebufferBlendSoftLightPipeline>(*context_);
254  }
255 
256  blend_color_pipelines_[default_options_] =
257  CreateDefaultPipeline<BlendColorPipeline>(*context_);
258  blend_colorburn_pipelines_[default_options_] =
259  CreateDefaultPipeline<BlendColorBurnPipeline>(*context_);
260  blend_colordodge_pipelines_[default_options_] =
261  CreateDefaultPipeline<BlendColorDodgePipeline>(*context_);
262  blend_darken_pipelines_[default_options_] =
263  CreateDefaultPipeline<BlendDarkenPipeline>(*context_);
264  blend_difference_pipelines_[default_options_] =
265  CreateDefaultPipeline<BlendDifferencePipeline>(*context_);
266  blend_exclusion_pipelines_[default_options_] =
267  CreateDefaultPipeline<BlendExclusionPipeline>(*context_);
268  blend_hardlight_pipelines_[default_options_] =
269  CreateDefaultPipeline<BlendHardLightPipeline>(*context_);
270  blend_hue_pipelines_[default_options_] =
271  CreateDefaultPipeline<BlendHuePipeline>(*context_);
272  blend_lighten_pipelines_[default_options_] =
273  CreateDefaultPipeline<BlendLightenPipeline>(*context_);
274  blend_luminosity_pipelines_[default_options_] =
275  CreateDefaultPipeline<BlendLuminosityPipeline>(*context_);
276  blend_multiply_pipelines_[default_options_] =
277  CreateDefaultPipeline<BlendMultiplyPipeline>(*context_);
278  blend_overlay_pipelines_[default_options_] =
279  CreateDefaultPipeline<BlendOverlayPipeline>(*context_);
280  blend_saturation_pipelines_[default_options_] =
281  CreateDefaultPipeline<BlendSaturationPipeline>(*context_);
282  blend_screen_pipelines_[default_options_] =
283  CreateDefaultPipeline<BlendScreenPipeline>(*context_);
284  blend_softlight_pipelines_[default_options_] =
285  CreateDefaultPipeline<BlendSoftLightPipeline>(*context_);
286 
287  rrect_blur_pipelines_[default_options_] =
288  CreateDefaultPipeline<RRectBlurPipeline>(*context_);
289  texture_blend_pipelines_[default_options_] =
290  CreateDefaultPipeline<BlendPipeline>(*context_);
291  texture_pipelines_[default_options_] =
292  CreateDefaultPipeline<TexturePipeline>(*context_);
293  position_uv_pipelines_[default_options_] =
294  CreateDefaultPipeline<PositionUVPipeline>(*context_);
295  tiled_texture_pipelines_[default_options_] =
296  CreateDefaultPipeline<TiledTexturePipeline>(*context_);
297  gaussian_blur_noalpha_decal_pipelines_[default_options_] =
298  CreateDefaultPipeline<GaussianBlurDecalPipeline>(*context_);
299  gaussian_blur_noalpha_nodecal_pipelines_[default_options_] =
300  CreateDefaultPipeline<GaussianBlurPipeline>(*context_);
301  border_mask_blur_pipelines_[default_options_] =
302  CreateDefaultPipeline<BorderMaskBlurPipeline>(*context_);
303  morphology_filter_pipelines_[default_options_] =
304  CreateDefaultPipeline<MorphologyFilterPipeline>(*context_);
305  color_matrix_color_filter_pipelines_[default_options_] =
306  CreateDefaultPipeline<ColorMatrixColorFilterPipeline>(*context_);
307  linear_to_srgb_filter_pipelines_[default_options_] =
308  CreateDefaultPipeline<LinearToSrgbFilterPipeline>(*context_);
309  srgb_to_linear_filter_pipelines_[default_options_] =
310  CreateDefaultPipeline<SrgbToLinearFilterPipeline>(*context_);
311  glyph_atlas_pipelines_[default_options_] =
312  CreateDefaultPipeline<GlyphAtlasPipeline>(*context_);
313  glyph_atlas_color_pipelines_[default_options_] =
314  CreateDefaultPipeline<GlyphAtlasColorPipeline>(*context_);
315  geometry_color_pipelines_[default_options_] =
316  CreateDefaultPipeline<GeometryColorPipeline>(*context_);
317  yuv_to_rgb_filter_pipelines_[default_options_] =
318  CreateDefaultPipeline<YUVToRGBFilterPipeline>(*context_);
319  porter_duff_blend_pipelines_[default_options_] =
320  CreateDefaultPipeline<PorterDuffBlendPipeline>(*context_);
321  // GLES only shader.
322 #ifdef IMPELLER_ENABLE_OPENGLES
323  if (GetContext()->GetBackendType() == Context::BackendType::kOpenGLES) {
324  texture_external_pipelines_[default_options_] =
325  CreateDefaultPipeline<TextureExternalPipeline>(*context_);
326  }
327 #endif // IMPELLER_ENABLE_OPENGLES
328  if (context_->GetCapabilities()->SupportsCompute()) {
329  auto pipeline_desc =
330  PointsComputeShaderPipeline::MakeDefaultPipelineDescriptor(*context_);
331  point_field_compute_pipelines_ =
332  context_->GetPipelineLibrary()->GetPipeline(pipeline_desc).Get();
333 
334  auto uv_pipeline_desc =
335  UvComputeShaderPipeline::MakeDefaultPipelineDescriptor(*context_);
336  uv_compute_pipelines_ =
337  context_->GetPipelineLibrary()->GetPipeline(uv_pipeline_desc).Get();
338  }
339 
340  /// Setup default clip pipeline.
341 
342  auto clip_pipeline_descriptor =
343  ClipPipeline::Builder::MakeDefaultPipelineDescriptor(*context_);
344  if (!clip_pipeline_descriptor.has_value()) {
345  return;
346  }
347  ContentContextOptions{
348  .sample_count = SampleCount::kCount4,
349  .color_attachment_pixel_format =
350  context_->GetCapabilities()->GetDefaultColorFormat()}
351  .ApplyToPipelineDescriptor(*clip_pipeline_descriptor);
352  // Disable write to all color attachments.
353  auto clip_color_attachments =
354  clip_pipeline_descriptor->GetColorAttachmentDescriptors();
355  for (auto& color_attachment : clip_color_attachments) {
356  color_attachment.second.write_mask =
357  static_cast<uint64_t>(ColorWriteMask::kNone);
358  }
359  clip_pipeline_descriptor->SetColorAttachmentDescriptors(
360  std::move(clip_color_attachments));
361  clip_pipelines_[default_options_] =
362  std::make_unique<ClipPipeline>(*context_, clip_pipeline_descriptor);
363 
364  is_valid_ = true;
365 }
366 
367 ContentContext::~ContentContext() = default;
368 
369 bool ContentContext::IsValid() const {
370  return is_valid_;
371 }
372 
373 std::shared_ptr<Texture> ContentContext::MakeSubpass(
374  const std::string& label,
375  ISize texture_size,
376  const SubpassCallback& subpass_callback,
377  bool msaa_enabled) const {
378  auto context = GetContext();
379 
380  RenderTarget subpass_target;
381  if (context->GetCapabilities()->SupportsOffscreenMSAA() && msaa_enabled) {
382  subpass_target = RenderTarget::CreateOffscreenMSAA(
383  *context, *GetRenderTargetCache(), texture_size,
384  SPrintF("%s Offscreen", label.c_str()),
385  RenderTarget::kDefaultColorAttachmentConfigMSAA //
386 #ifndef FML_OS_ANDROID // Reduce PSO variants for Vulkan.
387  ,
388  std::nullopt // stencil_attachment_config
389 #endif // FML_OS_ANDROID
390  );
391  } else {
392  subpass_target = RenderTarget::CreateOffscreen(
393  *context, *GetRenderTargetCache(), texture_size,
394  SPrintF("%s Offscreen", label.c_str()),
395  RenderTarget::kDefaultColorAttachmentConfig //
396 #ifndef FML_OS_ANDROID // Reduce PSO variants for Vulkan.
397  ,
398  std::nullopt // stencil_attachment_config
399 #endif // FML_OS_ANDROID
400  );
401  }
402  auto subpass_texture = subpass_target.GetRenderTargetTexture();
403  if (!subpass_texture) {
404  return nullptr;
405  }
406 
407  auto sub_command_buffer = context->CreateCommandBuffer();
408  sub_command_buffer->SetLabel(SPrintF("%s CommandBuffer", label.c_str()));
409  if (!sub_command_buffer) {
410  return nullptr;
411  }
412 
413  auto sub_renderpass = sub_command_buffer->CreateRenderPass(subpass_target);
414  if (!sub_renderpass) {
415  return nullptr;
416  }
417  sub_renderpass->SetLabel(SPrintF("%s RenderPass", label.c_str()));
418 
419  if (!subpass_callback(*this, *sub_renderpass)) {
420  return nullptr;
421  }
422 
423  if (!sub_command_buffer->SubmitCommandsAsync(std::move(sub_renderpass))) {
424  return nullptr;
425  }
426 
427  return subpass_texture;
428 }
429 
430 #if IMPELLER_ENABLE_3D
431 std::shared_ptr<scene::SceneContext> ContentContext::GetSceneContext() const {
432  return scene_context_;
433 }
434 #endif // IMPELLER_ENABLE_3D
435 
436 std::shared_ptr<Tessellator> ContentContext::GetTessellator() const {
437  return tessellator_;
438 }
439 
440 std::shared_ptr<Context> ContentContext::GetContext() const {
441  return context_;
442 }
443 
444 const Capabilities& ContentContext::GetDeviceCapabilities() const {
445  return *context_->GetCapabilities();
446 }
447 
448 void ContentContext::SetWireframe(bool wireframe) {
449  wireframe_ = wireframe;
450 }
451 
452 } // namespace impeller
impeller::PipelineDescriptor
Definition: pipeline_descriptor.h:30
impeller::ColorAttachmentDescriptor::src_color_blend_factor
BlendFactor src_color_blend_factor
Definition: formats.h:455
impeller::PipelineDescriptor::SetPolygonMode
void SetPolygonMode(PolygonMode mode)
Definition: pipeline_descriptor.cc:272
impeller::Entity::kLastPipelineBlendMode
static constexpr BlendMode kLastPipelineBlendMode
Definition: entity.h:23
impeller::RenderTarget::kDefaultColorAttachmentConfig
static constexpr AttachmentConfig kDefaultColorAttachmentConfig
Definition: render_target.h:65
impeller::StencilAttachmentDescriptor::stencil_compare
CompareFunction stencil_compare
Definition: formats.h:550
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:172
impeller::PipelineDescriptor::SetStencilAttachmentDescriptors
PipelineDescriptor & SetStencilAttachmentDescriptors(std::optional< StencilAttachmentDescriptor > front_and_back)
Definition: pipeline_descriptor.cc:153
entity.h
impeller::PipelineDescriptor::SetColorAttachmentDescriptor
PipelineDescriptor & SetColorAttachmentDescriptor(size_t index, ColorAttachmentDescriptor desc)
Definition: pipeline_descriptor.cc:106
impeller::Tessellator
A utility that generates triangles of the specified fill type given a polyline. This happens on the C...
Definition: tessellator.h:35
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:120
impeller::PipelineDescriptor::SetPrimitiveType
void SetPrimitiveType(PrimitiveType type)
Definition: pipeline_descriptor.cc:264
impeller::RenderTarget::kDefaultColorAttachmentConfigMSAA
static constexpr AttachmentConfigMSAA kDefaultColorAttachmentConfigMSAA
Definition: render_target.h:71
formats.h
impeller::BlendMode::kSourceIn
@ kSourceIn
impeller::ColorAttachmentDescriptor::alpha_blend_op
BlendOperation alpha_blend_op
Definition: formats.h:460
impeller::ContentContextOptions::blend_mode
BlendMode blend_mode
Definition: content_context.h:304
typographer_context.h
impeller::BlendFactor::kDestinationAlpha
@ kDestinationAlpha
impeller::ContentContextOptions::ApplyToPipelineDescriptor
void ApplyToPipelineDescriptor(PipelineDescriptor &desc) const
Definition: content_context.cc:23
impeller::BlendMode::kDestinationIn
@ kDestinationIn
impeller::SampleCount::kCount4
@ kCount4
impeller::PolygonMode::kFill
@ kFill
impeller::ContentContextOptions::wireframe
bool wireframe
Definition: content_context.h:310
impeller::BlendFactor::kSourceColor
@ kSourceColor
impeller::BlendMode::kXor
@ kXor
tessellator.h
impeller::BlendFactor::kDestinationColor
@ kDestinationColor
impeller::ContentContextOptions::stencil_compare
CompareFunction stencil_compare
Definition: content_context.h:305
impeller::BlendFactor::kZero
@ kZero
impeller::Capabilities
Definition: capabilities.h:14
impeller::TSize< int64_t >
impeller::ContentContext::MakeSubpass
std::shared_ptr< Texture > 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:373
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:43
impeller::ContentContextOptions::color_attachment_pixel_format
PixelFormat color_attachment_pixel_format
Definition: content_context.h:308
impeller::ContentContext::~ContentContext
~ContentContext()
render_pass.h
impeller::RenderTarget::GetRenderTargetTexture
std::shared_ptr< Texture > GetRenderTargetTexture() const
Definition: render_target.cc:155
impeller::BlendMode::kSourceOver
@ kSourceOver
impeller::BlendOperation::kReverseSubtract
@ kReverseSubtract
impeller::Context::BackendType::kOpenGLES
@ kOpenGLES
impeller::BlendMode::kPlus
@ kPlus
impeller::SPrintF
std::string SPrintF(const char *format,...)
Definition: strings.cc:12
impeller::BlendMode::kDestination
@ kDestination
impeller::ContentContext::GetContext
std::shared_ptr< Context > GetContext() const
Definition: content_context.cc:440
impeller::BlendOperation::kAdd
@ kAdd
impeller::ColorWriteMask::kNone
@ kNone
impeller::ContentContext::GetRenderTargetCache
std::shared_ptr< RenderTargetAllocator > GetRenderTargetCache() const
Definition: content_context.h:716
impeller::BlendMode::kDestinationATop
@ kDestinationATop
impeller::ColorAttachmentDescriptor::format
PixelFormat format
Definition: formats.h:452
impeller::StencilAttachmentDescriptor::depth_stencil_pass
StencilOperation depth_stencil_pass
Definition: formats.h:563
impeller::RenderTarget
Definition: render_target.h:48
impeller::ContentContextOptions::has_stencil_attachment
bool has_stencil_attachment
Definition: content_context.h:309
impeller::BlendFactor::kOne
@ kOne
impeller::ContentContextOptions::is_for_rrect_blur_clear
bool is_for_rrect_blur_clear
Definition: content_context.h:311
strings.h
impeller::BlendMode::kDestinationOut
@ kDestinationOut
impeller::ContentContext::GetTessellator
std::shared_ptr< Tessellator > GetTessellator() const
Definition: content_context.cc:436
impeller::ContentContextOptions::primitive_type
PrimitiveType primitive_type
Definition: content_context.h:307
pipeline_library.h
impeller::ContentContext::SubpassCallback
std::function< bool(const ContentContext &, RenderPass &)> SubpassCallback
Definition: content_context.h:703
impeller::PipelineDescriptor::SetSampleCount
PipelineDescriptor & SetSampleCount(SampleCount samples)
Definition: pipeline_descriptor.cc:72
impeller::ColorAttachmentDescriptor::src_alpha_blend_factor
BlendFactor src_alpha_blend_factor
Definition: formats.h:459
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
VALIDATION_LOG
#define VALIDATION_LOG
Definition: validation.h:60
command_buffer.h
impeller::ColorAttachmentDescriptor::dst_color_blend_factor
BlendFactor dst_color_blend_factor
Definition: formats.h:457
content_context.h
impeller::PipelineDescriptor::GetFrontStencilAttachmentDescriptor
std::optional< StencilAttachmentDescriptor > GetFrontStencilAttachmentDescriptor() const
Definition: pipeline_descriptor.cc:198
impeller::ColorAttachmentDescriptor::dst_alpha_blend_factor
BlendFactor dst_alpha_blend_factor
Definition: formats.h:461
impeller::ContentContext::GetDeviceCapabilities
const Capabilities & GetDeviceCapabilities() const
Definition: content_context.cc:444
impeller::PipelineBuilder::MakeDefaultPipelineDescriptor
static std::optional< PipelineDescriptor > MakeDefaultPipelineDescriptor(const Context &context)
Create a default pipeline descriptor using the combination reflected shader information....
Definition: pipeline_builder.h:50
impeller::Context
To do anything rendering related with Impeller, you need a context.
Definition: context.h:47
std
Definition: comparable.h:98
impeller::BlendMode::kDestinationOver
@ kDestinationOver
impeller::ContentContextOptions::sample_count
SampleCount sample_count
Definition: content_context.h:303
impeller::RenderTargetCache
An implementation of the [RenderTargetAllocator] that caches all allocated texture data for one frame...
Definition: render_target_cache.h:15
impeller::StencilAttachmentDescriptor
Definition: formats.h:544
impeller::BlendMode::kClear
@ kClear
impeller::ContentContext::SetWireframe
void SetWireframe(bool wireframe)
Definition: content_context.cc:448
impeller::PolygonMode::kLine
@ kLine
impeller::ColorAttachmentDescriptor::color_blend_op
BlendOperation color_blend_op
Definition: formats.h:456
impeller::BlendMode::kSourceATop
@ kSourceATop
render_target.h
impeller::BlendMode::kModulate
@ kModulate
render_target_cache.h
impeller::BlendFactor::kSourceAlpha
@ kSourceAlpha
impeller::ContentContextOptions
Definition: content_context.h:302
impeller::LazyGlyphAtlas
Definition: lazy_glyph_atlas.h:17
impeller::PipelineDescriptor::ClearStencilAttachments
void ClearStencilAttachments()
Definition: pipeline_descriptor.cc:166
impeller
Definition: aiks_context.cc:10
impeller::ContentContext::IsValid
bool IsValid() const
Definition: content_context.cc:369
impeller::ColorAttachmentDescriptor::blending_enabled
bool blending_enabled
Definition: formats.h:453
impeller::BlendMode::kSourceOut
@ kSourceOut
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:270
impeller::BlendMode::kSource
@ kSource
impeller::CreateDefaultPipeline
static std::unique_ptr< PipelineT > CreateDefaultPipeline(const Context &context)
Definition: content_context.cc:157
impeller::BlendFactor::kOneMinusDestinationAlpha
@ kOneMinusDestinationAlpha
impeller::ContentContextOptions::stencil_operation
StencilOperation stencil_operation
Definition: content_context.h:306
impeller::ColorAttachmentDescriptor
Describe the color attachment that will be used with this pipeline.
Definition: formats.h:451