runtime_effect_filter_contents.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_RUNTIME_EFFECT_FILTER_CONTENTS_H_
#define FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_RUNTIME_EFFECT_FILTER_CONTENTS_H_
 
#include "impeller/entity/contents/filters/filter_contents.h"
 
namespace impeller {
 
/// A filter that applies a runtime effect shader
class RuntimeEffectFilterContents final : public FilterContents {
 public:
  RuntimeEffectFilterContents() {}
 
  ~RuntimeEffectFilterContents() = default;
 
  void SetRuntimeStage(std::shared_ptr<RuntimeStage> runtime_stage);
 
  void SetUniforms(std::shared_ptr<std::vector<uint8_t>> uniforms);
 
  void SetTextureInputs(
      std::vector<RuntimeEffectContents::TextureInput> texture_inputs);
 
 private:
  std::shared_ptr<RuntimeStage> runtime_stage_;
  std::shared_ptr<std::vector<uint8_t>> uniforms_;
  std::vector<RuntimeEffectContents::TextureInput> texture_inputs_;
 
  // |FilterContents|
  std::optional<Entity> RenderFilter(
      const FilterInput::Vector& input_textures,
      const ContentContext& renderer,
      const Entity& entity,
      const Matrix& effect_transform,
      const Rect& coverage,
      const std::optional<Rect>& coverage_hint) const override;
 
  // |FilterContents|
  std::optional<Rect> GetFilterSourceCoverage(
      const Matrix& effect_transform,
      const Rect& output_limit) const override;
 
  RuntimeEffectFilterContents(const RuntimeEffectFilterContents&) = delete;
 
  RuntimeEffectFilterContents& operator=(const RuntimeEffectFilterContents&) =
      delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_RUNTIME_EFFECT_FILTER_CONTENTS_H_