public static void Init([NativeTypeName("D3D12_DESCRIPTOR_RANGE1 &")] out D3D12_DESCRIPTOR_RANGE1 range, D3D12_DESCRIPTOR_RANGE_TYPE rangeType, uint numDescriptors, uint baseShaderRegister, uint registerSpace = 0, D3D12_DESCRIPTOR_RANGE_FLAGS flags = D3D12_DESCRIPTOR_RANGE_FLAG_NONE, uint offsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND)
{
range.RangeType = rangeType;
range.NumDescriptors = numDescriptors;
range.BaseShaderRegister = baseShaderRegister;
range.RegisterSpace = registerSpace;
range.Flags = flags;
range.OffsetInDescriptorsFromTableStart = offsetInDescriptorsFromTableStart;
}
/// <summary>
/// Creates a new descriptor table root parameter
/// </summary>
/// <param name="ranges">The <see cref="DescriptorRangeParameter"/>s to bind</param>
/// <param name="visibility">Indicates which shaders have access to this parameter</param>
/// <returns>A new <see cref="RootParameter"/> representing a descriptor table</returns>
public static RootParameter CreateDescriptorTable(DescriptorRangeParameter[] ranges, ShaderVisibility visibility = ShaderVisibility.All)
{
// do NOT make this a not pinned array. RootSignature.TranslateRootParameters relies on it
var d3d12Ranges = GC.AllocateArray <D3D12_DESCRIPTOR_RANGE1>(ranges.Length, pinned: true);
for (var i = 0; i < ranges.Length; i++)
{
var range = ranges[i];
d3d12Ranges[i] = new D3D12_DESCRIPTOR_RANGE1(
(D3D12_DESCRIPTOR_RANGE_TYPE)range.Type,
range.DescriptorCount,
range.BaseShaderRegister,
range.RegisterSpace,
D3D12_DESCRIPTOR_RANGE_FLAGS.D3D12_DESCRIPTOR_RANGE_FLAG_NONE,
range.DescriptorOffset
);
}
return(new RootParameter(d3d12Ranges, visibility));
}