| // 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_RENDERER_BACKEND_METAL_TEXTURE_MTL_H_ |
| #define FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_TEXTURE_MTL_H_ |
| |
| #include <Metal/Metal.h> |
| |
| #include "flutter/fml/macros.h" |
| #include "impeller/base/backend_cast.h" |
| #include "impeller/core/texture.h" |
| |
| namespace impeller { |
| |
| class TextureMTL final : public Texture, |
| public BackendCast<TextureMTL, Texture> { |
| public: |
| /// @brief This callback needs to always return the same texture when called |
| /// multiple times. |
| using AcquireTextureProc = std::function<id<MTLTexture>()>; |
| |
| TextureMTL(TextureDescriptor desc, |
| const AcquireTextureProc& aquire_proc, |
| bool wrapped = false, |
| bool drawable = false); |
| |
| static std::shared_ptr<TextureMTL> Wrapper( |
| TextureDescriptor desc, |
| id<MTLTexture> texture, |
| std::function<void()> deletion_proc = nullptr); |
| |
| static std::shared_ptr<TextureMTL> Create(TextureDescriptor desc, |
| id<MTLTexture> texture); |
| |
| // |Texture| |
| ~TextureMTL() override; |
| |
| id<MTLTexture> GetMTLTexture() const; |
| |
| bool IsWrapped() const; |
| |
| /// @brief Whether or not this texture is wrapping a Metal drawable. |
| bool IsDrawable() const; |
| |
| // |Texture| |
| bool IsValid() const override; |
| |
| bool GenerateMipmap(id<MTLBlitCommandEncoder> encoder); |
| |
| private: |
| AcquireTextureProc aquire_proc_ = {}; |
| bool is_valid_ = false; |
| bool is_wrapped_ = false; |
| bool is_drawable_ = false; |
| |
| // |Texture| |
| void SetLabel(std::string_view label) override; |
| |
| // |Texture| |
| bool OnSetContents(const uint8_t* contents, |
| size_t length, |
| size_t slice) override; |
| |
| // |Texture| |
| bool OnSetContents(std::shared_ptr<const fml::Mapping> mapping, |
| size_t slice) override; |
| // |Texture| |
| ISize GetSize() const override; |
| |
| TextureMTL(const TextureMTL&) = delete; |
| |
| TextureMTL& operator=(const TextureMTL&) = delete; |
| }; |
| |
| } // namespace impeller |
| |
| #endif // FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_TEXTURE_MTL_H_ |