unit uvkuBufferFactory;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils,
  Vulkan, uvkuBuffer, uvkuTypes, uvkuFactoryBase;

type
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  TvkuBufferFactory = class(TvkuDeviceObjFactory)
  private
    fFlags: VkBufferCreateFlags;
    fSize: VkDeviceSize;
    fUsage: VkBufferUsageFlags;
    fSharingMode: TVkSharingMode;
    fQueueFamilyIndices: TVkUint32List;
  public
    property Flags:               VkBufferCreateFlags     read fFlags         write fFlags;
    property Size:                VkDeviceSize            read fSize          write fSize;
    property Usage:               VkBufferUsageFlags      read fUsage         write fUsage;
    property SharingMode:         TVkSharingMode          read fSharingMode   write fSharingMode;
    property QueueFamilyIndices:  TVkUint32List           read fQueueFamilyIndices;

    function GetStructure: TVkBufferCreateInfo;
    procedure SetStructure(const aData: TVkBufferCreateInfo);

    function CreateBuffer: TvkuBuffer;

    procedure AfterConstruction; override;
    procedure BeforeDestruction; override;
  end;

implementation

uses
  uvkuUtils;

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//TvkuBufferFactory//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function TvkuBufferFactory.GetStructure: TVkBufferCreateInfo;
begin
  FillByte(result, SizeOf(result), 0);
  result.sType                 := VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
  result.pNext                 := nil;
  result.flags                 := fFlags;
  result.size                  := fSize;
  result.usage                 := fUsage;
  result.sharingMode           := fSharingMode;
  result.queueFamilyIndexCount := fQueueFamilyIndices.Length;
  result.pQueueFamilyIndices   := fQueueFamilyIndices.PData;
end;

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
procedure TvkuBufferFactory.SetStructure(const aData: TVkBufferCreateInfo);
var i: Integer;
begin
  fFlags       := aData.flags;
  fSize        := aData.size;
  fUsage       := aData.usage;
  fSharingMode := aData.sharingMode;
  fQueueFamilyIndices.SetData(aData.pQueueFamilyIndices, aData.queueFamilyIndexCount);
end;

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function TvkuBufferFactory.CreateBuffer: TvkuBuffer;
begin
  result := TvkuBuffer.Create(GetStructure, DeviceCommands, AllocCallbacks);
end;

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
procedure TvkuBufferFactory.AfterConstruction;
begin
  inherited AfterConstruction;
  fQueueFamilyIndices := TVkUint32List.Create;
end;

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
procedure TvkuBufferFactory.BeforeDestruction;
begin
  FreeAndNil(fQueueFamilyIndices);
  inherited BeforeDestruction;
end;

end.