27 tile_mode_ = tile_mode;
31 colors_ = std::move(colors);
35 stops_ = std::move(stops);
50 for (
auto color : colors_) {
51 if (!
color.IsOpaque()) {
61 if (renderer.GetDeviceCapabilities().SupportsSSBO()) {
62 return RenderSSBO(renderer, entity, pass);
64 return RenderTexture(renderer, entity, pass);
67bool RadialGradientContents::RenderSSBO(
const ContentContext& renderer,
73 VS::FrameInfo frame_info;
78 return renderer.GetRadialGradientSSBOFillPipeline(
options);
80 return ColorSourceContents::DrawGeometry<VS>(
81 renderer, entity, pass, pipeline_callback, frame_info,
82 [
this, &renderer](RenderPass& pass) {
83 FS::FragInfo frag_info;
84 frag_info.center = center_;
85 frag_info.radius = radius_;
86 frag_info.tile_mode =
static_cast<Scalar>(tile_mode_);
87 frag_info.decal_border_color = decal_border_color_;
90 auto& host_buffer = renderer.GetTransientsBuffer();
93 frag_info.colors_length = colors.size();
95 host_buffer.Emplace(colors.data(), colors.size() *
sizeof(StopData),
98 pass.SetCommandLabel(
"RadialGradientSSBOFill");
100 pass, renderer.GetTransientsBuffer().EmplaceUniform(frag_info));
101 FS::BindColorData(pass, color_buffer);
107bool RadialGradientContents::RenderTexture(
const ContentContext& renderer,
108 const Entity& entity,
109 RenderPass& pass)
const {
114 auto gradient_texture =
116 if (gradient_texture ==
nullptr) {
120 VS::FrameInfo frame_info;
127 return ColorSourceContents::DrawGeometry<VS>(
128 renderer, entity, pass, pipeline_callback, frame_info,
129 [
this, &renderer, &gradient_texture](RenderPass& pass) {
130 FS::FragInfo frag_info;
131 frag_info.center = center_;
132 frag_info.radius = radius_;
133 frag_info.tile_mode =
static_cast<Scalar>(tile_mode_);
134 frag_info.decal_border_color = decal_border_color_;
135 frag_info.texture_sampler_y_coord_scale =
136 gradient_texture->GetYCoordScale();
138 frag_info.half_texel =
139 Vector2(0.5 / gradient_texture->GetSize().width,
140 0.5 / gradient_texture->GetSize().height);
142 SamplerDescriptor sampler_desc;
146 pass.SetCommandLabel(
"RadialGradientFill");
149 pass,
renderer.GetTransientsBuffer().EmplaceUniform(frag_info));
150 FS::BindTextureSampler(
151 pass, gradient_texture,
152 renderer.GetContext()->GetSamplerLibrary()->GetSampler(
164 decal_border_color_ = color_filter_proc(decal_border_color_);
static SkScalar center(float pos0, float pos1)
Scalar GetOpacityFactor() const
Get the opacity factor for this color source.
std::function< std::shared_ptr< Pipeline< PipelineDescriptor > >(ContentContextOptions)> PipelineBuilderCallback
const Matrix & GetInverseEffectTransform() const
Set the inverted effect transform for this color source.
std::function< Color(Color)> ColorFilterProc
void SetTileMode(Entity::TileMode tile_mode)
~RadialGradientContents() override
bool Render(const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override
void SetCenterAndRadius(Point center, Scalar radius)
bool IsOpaque() const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
void SetStops(std::vector< Scalar > stops)
bool ApplyColorFilter(const ColorFilterProc &color_filter_proc) override
If possible, applies a color filter to this contents inputs on the CPU.
void SetColors(std::vector< Color > colors)
const std::vector< Scalar > & GetStops() const
const std::vector< Color > & GetColors() const
Render passes encode render commands directed as one specific render target into an underlying comman...
VertexShader_ VertexShader
FragmentShader_ FragmentShader
std::vector< StopData > CreateGradientColors(const std::vector< Color > &colors, const std::vector< Scalar > &stops)
Populate a vector with the color and stop data for a gradient.
std::shared_ptr< Texture > CreateGradientTexture(const GradientData &gradient_data, const std::shared_ptr< impeller::Context > &context)
Create a host visible texture that contains the gradient defined by the provided gradient data.
GradientData CreateGradientBuffer(const std::vector< Color > &colors, const std::vector< Scalar > &stops)
Populate a vector with the interpolated color bytes for the linear gradient described by colors and s...
constexpr size_t DefaultUniformAlignment()