141 lines
3.0 KiB
C#
141 lines
3.0 KiB
C#
using Ghost.Graphics.Data;
|
|
using Ghost.Graphics.RHI;
|
|
using Win32;
|
|
using Win32.Graphics.Direct3D12;
|
|
|
|
namespace Ghost.Graphics.D3D12;
|
|
|
|
/// <summary>
|
|
/// D3D12 implementation of texture interface using resource handles
|
|
/// </summary>
|
|
internal unsafe class D3D12Texture : ITexture
|
|
{
|
|
private readonly TextureHandle _handle;
|
|
private readonly ComPtr<ID3D12Resource> _externalResource;
|
|
private ResourceState _currentState;
|
|
private bool _disposed;
|
|
|
|
public uint Width
|
|
{
|
|
get;
|
|
}
|
|
|
|
public uint Height
|
|
{
|
|
get;
|
|
}
|
|
|
|
public uint Slice
|
|
{
|
|
get;
|
|
}
|
|
|
|
public TextureFormat Format
|
|
{
|
|
get;
|
|
}
|
|
|
|
public uint MipLevels
|
|
{
|
|
get;
|
|
}
|
|
|
|
public string Name
|
|
{
|
|
get; set;
|
|
} = string.Empty;
|
|
|
|
public ulong Size
|
|
{
|
|
get;
|
|
}
|
|
|
|
public ResourceState CurrentState => _currentState;
|
|
|
|
public ID3D12Resource* NativeResource => _handle.IsValid ? _handle.ResourceHandle.GetAllocation().Resource : _externalResource.Get();
|
|
|
|
public D3D12Texture(ComPtr<ID3D12Resource> resource, uint width, uint height, uint slice, TextureFormat format, uint mipLevels = 1)
|
|
{
|
|
_handle = TextureHandle.Invalid;
|
|
_externalResource = resource.Move();
|
|
|
|
Width = width;
|
|
Height = height;
|
|
Slice = slice;
|
|
Format = format;
|
|
MipLevels = mipLevels;
|
|
_currentState = ResourceState.Common;
|
|
Size = Width * Height * GetBytesPerPixel(Format);
|
|
}
|
|
|
|
public D3D12Texture(TextureHandle handle, ref readonly TextureDesc desc)
|
|
{
|
|
_handle = handle;
|
|
_externalResource = default;
|
|
|
|
Width = desc.Width;
|
|
Height = desc.Height;
|
|
Slice = desc.Slice;
|
|
Format = desc.Format;
|
|
|
|
var mipLevels = desc.MipLevels;
|
|
if (mipLevels <= 0)
|
|
{
|
|
mipLevels = (uint)(Math.Floor(Math.Log2(Math.Max(Width, Height))) + 1);
|
|
}
|
|
|
|
MipLevels = mipLevels;
|
|
_currentState = ResourceState.Common;
|
|
Size = Width * Height * GetBytesPerPixel(Format);
|
|
}
|
|
|
|
~D3D12Texture()
|
|
{
|
|
Dispose(false);
|
|
}
|
|
|
|
private static uint GetBytesPerPixel(TextureFormat format)
|
|
{
|
|
return format switch
|
|
{
|
|
TextureFormat.R8G8B8A8_UNorm => 4,
|
|
TextureFormat.B8G8R8A8_UNorm => 4,
|
|
TextureFormat.R16G16B16A16_Float => 8,
|
|
TextureFormat.R32G32B32A32_Float => 16,
|
|
TextureFormat.D24_UNorm_S8_UInt => 4,
|
|
TextureFormat.D32_Float => 4,
|
|
_ => 4
|
|
};
|
|
}
|
|
|
|
public void SetCurrentState(ResourceState state)
|
|
{
|
|
_currentState = state;
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
protected virtual void Dispose(bool disposing)
|
|
{
|
|
if (_disposed)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (_handle.IsValid)
|
|
{
|
|
_handle.Dispose();
|
|
}
|
|
else
|
|
{
|
|
_externalResource.Dispose();
|
|
}
|
|
|
|
_disposed = true;
|
|
}
|
|
}
|