texture_vk.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_RENDERER_BACKEND_VULKAN_TEXTURE_VK_H_
#define FLUTTER_IMPELLER_RENDERER_BACKEND_VULKAN_TEXTURE_VK_H_
 
#include "impeller/base/backend_cast.h"
#include "impeller/core/formats.h"
#include "impeller/core/texture.h"
#include "impeller/renderer/backend/vulkan/context_vk.h"
#include "impeller/renderer/backend/vulkan/device_buffer_vk.h"
#include "impeller/renderer/backend/vulkan/formats_vk.h"
#include "impeller/renderer/backend/vulkan/sampler_vk.h"
#include "impeller/renderer/backend/vulkan/texture_source_vk.h"
#include "impeller/renderer/backend/vulkan/vk.h"
 
namespace impeller {
 
class TextureVK final : public Texture, public BackendCast<TextureVK, Texture> {
 public:
  TextureVK(std::weak_ptr<Context> context,
            std::shared_ptr<TextureSourceVK> source);
 
  // |Texture|
  ~TextureVK() override;
 
  vk::Image GetImage() const;
 
  vk::ImageView GetImageView() const;
 
  vk::ImageView GetRenderTargetView(uint32_t mip_level = 0,
                                    uint32_t array_layer = 0) const;
 
  bool SetLayout(const BarrierVK& barrier) const;
 
  vk::ImageLayout SetLayoutWithoutEncoding(vk::ImageLayout layout) const;
 
  vk::ImageLayout GetLayout() const;
 
  std::shared_ptr<const TextureSourceVK> GetTextureSource() const;
 
  // |Texture|
  ISize GetSize() const override;
 
  void SetMipMapGenerated();
 
  bool IsSwapchainImage() const;
 
  std::shared_ptr<SamplerVK> GetImmutableSamplerVariant(
      const SamplerVK& sampler) const;
 
  /// Store the framebuffer and render pass last used to render into the
  /// `(sample_count, mip_level, slice)` subresource of this texture.
  ///
  /// Only called when this texture is being used as the resolve (or
  /// non-MSAA color) target of a render pass.
  void SetCachedFrameData(const FramebufferAndRenderPass& data,
                          SampleCount sample_count,
                          uint32_t mip_level = 0u,
                          uint32_t slice = 0u);
 
  /// Retrieve the cached framebuffer and render pass for the given
  /// `(sample_count, mip_level, slice)` subresource. Returns an empty
  /// `FramebufferAndRenderPass` if no entry exists.
  FramebufferAndRenderPass GetCachedFrameData(SampleCount sample_count,
                                              uint32_t mip_level = 0u,
                                              uint32_t slice = 0u) const;
 
 private:
  std::weak_ptr<Context> context_;
  std::shared_ptr<TextureSourceVK> source_;
  bool has_validation_layers_ = false;
 
  // |Texture|
  void SetLabel(std::string_view label) override;
 
  // |Texture|
  void SetLabel(std::string_view label, std::string_view trailing) 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|
  bool IsValid() const override;
 
  TextureVK(const TextureVK&) = delete;
 
  TextureVK& operator=(const TextureVK&) = delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_RENDERER_BACKEND_VULKAN_TEXTURE_VK_H_