text: /*
   * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
   * Copyright (c) 2022, Jelle Raaijmakers <jelle@gmta.nl>
   *
   * SPDX-License-Identifier: BSD-2-Clause
   */
  
  #pragma once
  
  #include <AK/FixedArray.h>
  #include <AK/RefCounted.h>
  #include <AK/RefPtr.h>
  #include <LibGfx/Vector3.h>
  #include <LibGfx/Vector4.h>
  #include <LibSoftGPU/Buffer/Typed3DBuffer.h>
  #include <LibSoftGPU/Enums.h>
  #include <LibSoftGPU/ImageDataLayout.h>
  #include <LibSoftGPU/ImageFormat.h>
  
  namespace SoftGPU {
  
  class Image final : public RefCounted<Image> {
  public:
      Image(unsigned width, unsigned height, unsigned depth, unsigned max_levels, unsigned layers);
  
      unsigned level_width(unsigned level) const { return m_mipmap_buffers[level]->width(); }
      unsigned level_height(unsigned level) const { return m_mipmap_buffers[level]->height(); }
      unsigned level_depth(unsigned level) const { return m_mipmap_buffers[level]->depth(); }
      unsigned num_levels() const { return m_num_levels; }
      unsigned num_layers() const { return m_num_layers; }
      bool width_is_power_of_two() const { return m_width_is_power_of_two; }
      bool height_is_power_of_two() const { return m_height_is_power_of_two; }
      bool depth_is_power_of_two() const { return m_depth_is_power_of_two; }
  
      FloatVector4 texel(unsigned layer, unsigned level, int x, int y, int z) const
      {
          return unpack_color(texel_pointer(layer, level, x, y, z), ImageFormat::BGRA8888);
      }
  
      void set_texel(unsigned layer, unsigned level, int x, int y, int z, FloatVector4 const& color)
      {
          pack_color(color, texel_pointer(layer, level, x, y, z), ImageFormat::BGRA8888);
      }
  
      void write_texels(unsigned layer, unsigned level, Vector3<unsigned> const& offset, Vector3<unsigned> const& size, void const* data, ImageDataLayout const& layout);
      void read_texels(unsigned layer, unsigned level, Vector3<unsigned> const& offset, Vector3<unsigned> const& size, void* data, ImageDataLayout const& layout) const;
      void copy_texels(Image const& source, unsigned source_layer, unsigned source_level, Vector3<unsigned> const& source_offset, Vector3<unsigned> const& size, unsigned destination_layer, unsigned destination_level, Vector3<unsigned> const& destination_offset);
  
  private:
      void const* texel_pointer(unsigned layer, unsigned level, int x, int y, int z) const
      {
          return m_mipmap_buffers[layer * m_num_layers + level]->buffer_pointer(x, y, z);
      }
  
      void* texel_pointer(unsigned layer, unsigned level, int x, int y, int z)
      {
          return m_mipmap_buffers[layer * m_num_layers + level]->buffer_pointer(x, y, z);
      }
  
  private:
      unsigned m_num_levels { 0 };
      unsigned m_num_layers { 0 };
  
      FixedArray<RefPtr<Typed3DBuffer<ColorType>>> m_mipmap_buffers;
  
      bool m_width_is_power_of_two { false };
      bool m_height_is_power_of_two { false };
      bool m_depth_is_power_of_two { false };
  };
  
  }
  