/// <summary>
/// Initializes a new instance of the <see cref="ShaderResourceViewDescription"/> struct.
/// </summary>
/// <param name="viewDimension">The <see cref="ShaderResourceViewDimension"/></param>
/// <param name="format">The <see cref="DXGI.Format"/> to use or <see cref="Format.Unknown"/>.</param>
/// <param name="mostDetailedMip">Index of the most detailed mipmap level to use or first element for <see cref="ShaderResourceViewDimension.Buffer"/> or <see cref="ShaderResourceViewDimension.BufferExtended"/>.</param>
/// <param name="mipLevels">The maximum number of mipmap levels for the view of the texture or num elements for <see cref="ShaderResourceViewDimension.Buffer"/> or <see cref="ShaderResourceViewDimension.BufferExtended"/>.</param>
/// <param name="firstArraySlice">The index of the first texture to use in an array of textures or First2DArrayFace for <see cref="ShaderResourceViewDimension.TextureCubeArray"/>. </param>
/// <param name="arraySize">Number of textures in the array or num cubes for <see cref="ShaderResourceViewDimension.TextureCubeArray"/>. </param>
/// <param name="flags"><see cref="BufferExtendedShaderResourceViewFlag"/> for <see cref="ShaderResourceViewDimension.BufferExtended"/>.</param>
public ShaderResourceViewDescription(
ShaderResourceViewDimension viewDimension,
Format format = Format.Unknown,
int mostDetailedMip = 0,
int mipLevels = -1,
int firstArraySlice = 0,
int arraySize = -1,
BufferExtendedShaderResourceViewFlag flags = BufferExtendedShaderResourceViewFlag.None) : this()
{
Format = format;
ViewDimension = viewDimension;
switch (viewDimension)
{
case ShaderResourceViewDimension.Buffer:
Buffer.FirstElement = mostDetailedMip;
Buffer.NumElements = mipLevels;
break;
case ShaderResourceViewDimension.Texture1D:
Texture1D.MostDetailedMip = mostDetailedMip;
Texture1D.MipLevels = mipLevels;
break;
case ShaderResourceViewDimension.Texture1DArray:
Texture1DArray.MostDetailedMip = mostDetailedMip;
Texture1DArray.MipLevels = mipLevels;
Texture1DArray.FirstArraySlice = firstArraySlice;
Texture1DArray.ArraySize = arraySize;
break;
case ShaderResourceViewDimension.Texture2D:
Texture2D.MostDetailedMip = mostDetailedMip;
Texture2D.MipLevels = mipLevels;
break;
case ShaderResourceViewDimension.Texture2DArray:
Texture2DArray.MostDetailedMip = mostDetailedMip;
Texture2DArray.MipLevels = mipLevels;
Texture2DArray.FirstArraySlice = firstArraySlice;
Texture2DArray.ArraySize = arraySize;
break;
case ShaderResourceViewDimension.Texture2DMultisampled:
break;
case ShaderResourceViewDimension.Texture2DMultisampledArray:
Texture2DMSArray.FirstArraySlice = firstArraySlice;
Texture2DMSArray.ArraySize = arraySize;
break;
case ShaderResourceViewDimension.Texture3D:
Texture3D.MostDetailedMip = mostDetailedMip;
Texture3D.MipLevels = mipLevels;
break;
case ShaderResourceViewDimension.TextureCube:
TextureCube.MostDetailedMip = mostDetailedMip;
TextureCube.MipLevels = mipLevels;
break;
case ShaderResourceViewDimension.TextureCubeArray:
TextureCubeArray.MostDetailedMip = mostDetailedMip;
TextureCubeArray.MipLevels = mipLevels;
TextureCubeArray.First2DArrayFace = firstArraySlice;
TextureCubeArray.NumCubes = arraySize;
break;
case ShaderResourceViewDimension.BufferExtended:
BufferEx.FirstElement = mostDetailedMip;
BufferEx.NumElements = mipLevels;
BufferEx.Flags = flags;
break;
default:
break;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ShaderResourceViewDescription"/> struct.
/// </summary>
/// <param name="buffer">Unused <see cref="ID3D11Buffer"/> </param>
/// <param name="format"></param>
/// <param name="firstElement"></param>
/// <param name="numElements"></param>
/// <param name="flags"></param>
public ShaderResourceViewDescription(ID3D11Buffer buffer, Format format, int firstElement, int numElements, BufferExtendedShaderResourceViewFlag flags = BufferExtendedShaderResourceViewFlag.None)
: this()
{
Format = format;
ViewDimension = ShaderResourceViewDimension.BufferExtended;
BufferEx.FirstElement = firstElement;
BufferEx.NumElements = numElements;
BufferEx.Flags = flags;
}
