| 1 | // Copyright 2013 The Flutter Authors. All rights reserved. |
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| 2 | // Use of this source code is governed by a BSD-style license that can be |
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| 3 | // found in the LICENSE file. |
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| 4 | |
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| 5 | #pragma once |
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| 6 | |
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| 7 | #include "fml/macros.h" |
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| 8 | #include "impeller/renderer/render_target.h" |
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| 9 | |
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| 10 | namespace impeller { |
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| 11 | |
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| 12 | class InlinePassContext; |
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| 13 | |
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| 14 | class EntityPassTarget { |
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| 15 | public: |
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| 16 | explicit EntityPassTarget(const RenderTarget& render_target, |
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| 17 | bool supports_read_from_resolve); |
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| 18 | |
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| 19 | /// @brief Flips the backdrop and returns a readable texture that can be |
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| 20 | /// bound/sampled to restore the previous pass. |
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| 21 | /// |
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| 22 | /// After this method is called, a new `RenderPass` that attaches the |
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| 23 | /// result of `GetRenderTarget` is guaranteed to be able to read the |
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| 24 | /// previous pass's backdrop texture (which is returned by this |
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| 25 | /// method). |
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| 26 | std::shared_ptr<Texture> Flip(Allocator& allocator); |
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| 27 | |
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| 28 | const RenderTarget& GetRenderTarget() const; |
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| 29 | |
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| 30 | bool IsValid() const; |
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| 31 | |
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| 32 | private: |
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| 33 | RenderTarget target_; |
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| 34 | std::shared_ptr<Texture> secondary_color_texture_; |
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| 35 | |
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| 36 | bool supports_read_from_resolve_; |
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| 37 | |
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| 38 | friend InlinePassContext; |
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| 39 | |
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| 40 | FML_DISALLOW_ASSIGN(EntityPassTarget); |
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| 41 | }; |
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| 42 | |
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| 43 | } // namespace impeller |
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| 44 | |
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