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Flutter Engine
The Flutter Engine
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Flutter Engine
The Flutter Engine
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#include <blend_filter_contents.h>
Public Types | |
| using | AdvancedBlendProc = std::function< std::optional< Entity >(const FilterInput::Vector &inputs, const ContentContext &renderer, const Entity &entity, const Rect &coverage, BlendMode blend_mode, std::optional< Color > foreground_color, ColorFilterContents::AbsorbOpacity absorb_opacity, std::optional< Scalar > alpha)> |
 Public Types inherited from impeller::ColorFilterContents | |
| enum class | AbsorbOpacity { kYes , kNo } |
| Public Types inherited from impeller::FilterContents | |
| enum class | BlurStyle { kNormal , kSolid , kOuter , kInner } |
| enum class | MorphType { kDilate , kErode } |
| Public Types inherited from impeller::Contents | |
| using | ColorFilterProc = std::function< Color(Color)> |
| using | RenderProc = std::function< bool(const ContentContext &renderer, const Entity &entity, RenderPass &pass)> |
| using | CoverageProc = std::function< std::optional< Rect >(const Entity &entity)> |
Public Member Functions | |
| BlendFilterContents () | |
| ~BlendFilterContents () override | |
| void | SetBlendMode (BlendMode blend_mode) |
| void | SetForegroundColor (std::optional< Color > color) |
| Sets a source color which is blended after all of the inputs have been blended. More... | |
| Public Member Functions inherited from impeller::ColorFilterContents | |
| ColorFilterContents () | |
| ~ColorFilterContents () override | |
| void | SetAbsorbOpacity (AbsorbOpacity absorb_opacity) |
| AbsorbOpacity | GetAbsorbOpacity () const |
| void | SetAlpha (Scalar alpha) |
| Sets an alpha that is applied to the final blended result. More... | |
| std::optional< Scalar > | GetAlpha () const |
| std::optional< Rect > | GetFilterSourceCoverage (const Matrix &effect_transform, const Rect &output_limit) const override |
| Internal utility method for |GetSourceCoverage| that computes the inverse effect of this transform on the specified output coverage, ignoring the inputs which will be accommodated by the caller. More... | |
| Public Member Functions inherited from impeller::FilterContents | |
| FilterContents () | |
| ~FilterContents () override | |
| void | SetInputs (FilterInput::Vector inputs) |
| The input texture sources for this filter. Each input's emitted texture is expected to have premultiplied alpha colors. More... | |
| void | SetEffectTransform (const Matrix &effect_transform) |
| Sets the transform which gets appended to the effect of this filter. Note that this is in addition to the entity's transform. More... | |
| std::optional< Entity > | GetEntity (const ContentContext &renderer, const Entity &entity, const std::optional< Rect > &coverage_hint) const |
| Create an Entity that renders this filter's output. More... | |
| bool | Render (const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override |
| std::optional< Rect > | GetCoverage (const Entity &entity) const override |
| Get the area of the render pass that will be affected when this contents is rendered. More... | |
| void | PopulateGlyphAtlas (const std::shared_ptr< LazyGlyphAtlas > &lazy_glyph_atlas, Scalar scale) override |
| Add any text data to the specified lazy atlas. The scale parameter must be used again later when drawing the text. More... | |
| std::optional< Snapshot > | RenderToSnapshot (const ContentContext &renderer, const Entity &entity, std::optional< Rect > coverage_limit=std::nullopt, const std::optional< SamplerDescriptor > &sampler_descriptor=std::nullopt, bool msaa_enabled=true, int32_t mip_count=1, const std::string &label="Filter Snapshot") const override |
Render this contents to a snapshot, respecting the entity's transform, path, clip depth, and blend mode. The result texture size is always the size of GetCoverage(entity). More... | |
| const FilterContents * | AsFilter () const override |
Cast to a filter. Returns nullptr if this Contents is not a filter. More... | |
| std::optional< Rect > | GetSourceCoverage (const Matrix &effect_transform, const Rect &output_limit) const |
| Determines the coverage of source pixels that will be needed to produce results for the specified |output_limit| under the specified |effect_transform|. This is essentially a reverse of the |GetCoverage| method computing a source coverage from an intended |output_limit| coverage. More... | |
| virtual Matrix | GetLocalTransform (const Matrix &parent_transform) const |
| Matrix | GetTransform (const Matrix &parent_transform) const |
| virtual bool | IsTranslationOnly () const |
| Returns true if this filter graph doesn't perform any basis transforms to the filtered content. For example: Rotating, scaling, and skewing are all basis transforms, but translating is not. More... | |
| bool | IsLeaf () const |
Returns true if this filter does not have any FilterInput children. More... | |
| void | SetLeafInputs (const FilterInput::Vector &inputs) |
Replaces the set of all leaf FilterContents with a new set of FilterInputs. More... | |
| virtual void | SetRenderingMode (Entity::RenderingMode rendering_mode) |
| Marks this filter chain as applying in a subpass scenario. More... | |
| Public Member Functions inherited from impeller::Contents | |
| Contents () | |
| virtual | ~Contents () |
| virtual void | PopulateGlyphAtlas (const std::shared_ptr< LazyGlyphAtlas > &lazy_glyph_atlas, Scalar scale) |
| Add any text data to the specified lazy atlas. The scale parameter must be used again later when drawing the text. More... | |
| virtual bool | Render (const ContentContext &renderer, const Entity &entity, RenderPass &pass) const =0 |
| virtual std::optional< Rect > | GetCoverage (const Entity &entity) const =0 |
| Get the area of the render pass that will be affected when this contents is rendered. More... | |
| void | SetCoverageHint (std::optional< Rect > coverage_hint) |
Hint that specifies the coverage area of this Contents that will actually be used during rendering. This is for optimization purposes only and can not be relied on as a clip. May optionally affect the result of GetCoverage(). More... | |
| const std::optional< Rect > & | GetCoverageHint () const |
| virtual bool | IsOpaque () const |
| Whether this Contents only emits opaque source colors from the fragment stage. This value does not account for any entity properties (e.g. the blend mode), clips/visibility culling, or inherited opacity. More... | |
| virtual ClipCoverage | GetClipCoverage (const Entity &entity, const std::optional< Rect > ¤t_clip_coverage) const |
| Given the current pass space bounding rectangle of the clip buffer, return the expected clip coverage after this draw call. This should only be implemented for contents that may write to the clip buffer. More... | |
| virtual std::optional< Snapshot > | RenderToSnapshot (const ContentContext &renderer, const Entity &entity, std::optional< Rect > coverage_limit=std::nullopt, const std::optional< SamplerDescriptor > &sampler_descriptor=std::nullopt, bool msaa_enabled=true, int32_t mip_count=1, const std::string &label="Snapshot") const |
Render this contents to a snapshot, respecting the entity's transform, path, clip depth, and blend mode. The result texture size is always the size of GetCoverage(entity). More... | |
| virtual bool | ShouldRender (const Entity &entity, const std::optional< Rect > clip_coverage) const |
| std::optional< Size > | GetColorSourceSize () const |
| Return the color source's intrinsic size, if available. More... | |
| void | SetColorSourceSize (Size size) |
| virtual bool | CanInheritOpacity (const Entity &entity) const |
| Whether or not this contents can accept the opacity peephole optimization. More... | |
| virtual void | SetInheritedOpacity (Scalar opacity) |
| Inherit the provided opacity. More... | |
| virtual std::optional< Color > | AsBackgroundColor (const Entity &entity, ISize target_size) const |
Returns a color if this Contents will flood the given target_size with a color. This output color is the "Source" color that will be used for the Entity's blend operation. More... | |
| virtual const FilterContents * | AsFilter () const |
Cast to a filter. Returns nullptr if this Contents is not a filter. More... | |
| virtual bool | ApplyColorFilter (const ColorFilterProc &color_filter_proc) |
| If possible, applies a color filter to this contents inputs on the CPU. More... | |
Additional Inherited Members | |
| Static Public Member Functions inherited from impeller::ColorFilterContents | |
| 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. More... | |
| static std::shared_ptr< ColorFilterContents > | MakeColorMatrix (FilterInput::Ref input, const ColorMatrix &color_matrix) |
| static std::shared_ptr< ColorFilterContents > | MakeLinearToSrgbFilter (FilterInput::Ref input) |
| static std::shared_ptr< ColorFilterContents > | MakeSrgbToLinearFilter (FilterInput::Ref input) |
| Static Public Member Functions inherited from impeller::FilterContents | |
| 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 std::shared_ptr< Geometry > &mask_geometry=nullptr) |
| static std::shared_ptr< FilterContents > | MakeBorderMaskBlur (FilterInput::Ref input, Sigma sigma_x, Sigma sigma_y, BlurStyle blur_style=BlurStyle::kNormal) |
| static std::shared_ptr< FilterContents > | MakeDirectionalMorphology (FilterInput::Ref input, Radius radius, Vector2 direction, MorphType morph_type) |
| static std::shared_ptr< FilterContents > | MakeMorphology (FilterInput::Ref input, Radius radius_x, Radius radius_y, MorphType morph_type) |
| static std::shared_ptr< FilterContents > | MakeMatrixFilter (FilterInput::Ref input, const Matrix &matrix, const SamplerDescriptor &desc) |
| static std::shared_ptr< FilterContents > | MakeLocalMatrixFilter (FilterInput::Ref input, const Matrix &matrix) |
| static std::shared_ptr< FilterContents > | MakeYUVToRGBFilter (std::shared_ptr< Texture > y_texture, std::shared_ptr< Texture > uv_texture, YUVColorSpace yuv_color_space) |
| Static Public Member Functions inherited from impeller::Contents | |
| static std::shared_ptr< Contents > | MakeAnonymous (RenderProc render_proc, CoverageProc coverage_proc) |
| Static Public Attributes inherited from impeller::FilterContents | |
| static const int32_t | kBlurFilterRequiredMipCount |
Definition at line 35 of file blend_filter_contents.h.
| using impeller::BlendFilterContents::AdvancedBlendProc = std::function<std::optional<Entity>( const FilterInput::Vector& inputs, const ContentContext& renderer, const Entity& entity, const Rect& coverage, BlendMode blend_mode, std::optional<Color> foreground_color, ColorFilterContents::AbsorbOpacity absorb_opacity, std::optional<Scalar> alpha)> |
Definition at line 37 of file blend_filter_contents.h.
| impeller::BlendFilterContents::BlendFilterContents | ( | ) |
Definition at line 66 of file blend_filter_contents.cc.
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overridedefault |
| void impeller::BlendFilterContents::SetBlendMode | ( | BlendMode | blend_mode | ) |
Definition at line 924 of file blend_filter_contents.cc.
| void impeller::BlendFilterContents::SetForegroundColor | ( | std::optional< Color > | color | ) |
Sets a source color which is blended after all of the inputs have been blended.
Definition at line 955 of file blend_filter_contents.cc.
1.9.4