Flutter Impeller
entity_pass_target.h
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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 #ifndef FLUTTER_IMPELLER_ENTITY_ENTITY_PASS_TARGET_H_
6 #define FLUTTER_IMPELLER_ENTITY_ENTITY_PASS_TARGET_H_
7 
10 
11 namespace impeller {
12 
13 class InlinePassContext;
14 
16  public:
17  explicit EntityPassTarget(const RenderTarget& render_target,
18  bool supports_read_from_resolve,
19  bool supports_implicit_msaa);
20 
21  /// @brief Flips the backdrop and returns a readable texture that can be
22  /// bound/sampled to restore the previous pass.
23  ///
24  /// After this method is called, a new `RenderPass` that attaches the
25  /// result of `GetRenderTarget` is guaranteed to be able to read the
26  /// previous pass's backdrop texture (which is returned by this
27  /// method).
28  std::shared_ptr<Texture> Flip(const ContentContext& renderer);
29 
31 
32  /// @brief Remove the cached secondary color texture.
33  void RemoveSecondary();
34 
35  bool IsValid() const;
36 
37  private:
38  RenderTarget target_;
39  std::shared_ptr<Texture> secondary_color_texture_;
40 
41  bool supports_read_from_resolve_;
42  bool supports_implicit_msaa_;
43 
44  friend InlinePassContext;
45 
46  EntityPassTarget& operator=(const EntityPassTarget&) = delete;
47 };
48 
49 } // namespace impeller
50 
51 #endif // FLUTTER_IMPELLER_ENTITY_ENTITY_PASS_TARGET_H_
void RemoveSecondary()
Remove the cached secondary color texture.
EntityPassTarget(const RenderTarget &render_target, bool supports_read_from_resolve, bool supports_implicit_msaa)
std::shared_ptr< Texture > Flip(const ContentContext &renderer)
Flips the backdrop and returns a readable texture that can be bound/sampled to restore the previous p...