/// <summary>
/// Returns default values for <see cref="D3D11.BlendDescription"/>.
/// Original code from https://github.com/sharpdx/SharpDX/blob/master/Source/SharpDX.Direct3D11/BlendStateDescription.cs
/// </summary>
private static D3D11.BlendDescription CreateDefaultBlendDescription()
{
var description = new D3D11.BlendDescription()
{
AlphaToCoverageEnable = false,
IndependentBlendEnable = false,
};
var renderTargets = description.RenderTarget;
for (var i = 0; i < renderTargets.Length; i++)
{
renderTargets[i].IsBlendEnabled = false;
renderTargets[i].SourceBlend = D3D11.Blend.One;
renderTargets[i].DestinationBlend = D3D11.Blend.Zero;
renderTargets[i].BlendOperation = D3D11.BlendOperation.Add;
renderTargets[i].SourceBlendAlpha = D3D11.Blend.One;
renderTargets[i].DestinationBlendAlpha = D3D11.Blend.Zero;
renderTargets[i].BlendOperationAlpha = D3D11.BlendOperation.Add;
renderTargets[i].RenderTargetWriteMask = D3D11.ColorWriteEnable.All;
}
return(description);
}
private ID3D11BlendState CreateNewBlendState(ref BlendStateDescription description)
{
BlendAttachmentDescription[] attachmentStates = description.AttachmentStates;
Vortice.Direct3D11.BlendDescription d3dBlendStateDesc = new Vortice.Direct3D11.BlendDescription();
for (int i = 0; i < attachmentStates.Length; i++)
{
BlendAttachmentDescription state = attachmentStates[i];
d3dBlendStateDesc.RenderTarget[i].IsBlendEnabled = state.BlendEnabled;
d3dBlendStateDesc.RenderTarget[i].RenderTargetWriteMask = ColorWriteEnable.All;
d3dBlendStateDesc.RenderTarget[i].SourceBlend = D3D11Formats.VdToD3D11Blend(state.SourceColorFactor);
d3dBlendStateDesc.RenderTarget[i].DestinationBlend = D3D11Formats.VdToD3D11Blend(state.DestinationColorFactor);
d3dBlendStateDesc.RenderTarget[i].BlendOperation = D3D11Formats.VdToD3D11BlendOperation(state.ColorFunction);
d3dBlendStateDesc.RenderTarget[i].SourceBlendAlpha = D3D11Formats.VdToD3D11Blend(state.SourceAlphaFactor);
d3dBlendStateDesc.RenderTarget[i].DestinationBlendAlpha = D3D11Formats.VdToD3D11Blend(state.DestinationAlphaFactor);
d3dBlendStateDesc.RenderTarget[i].BlendOperationAlpha = D3D11Formats.VdToD3D11BlendOperation(state.AlphaFunction);
}
d3dBlendStateDesc.AlphaToCoverageEnable = description.AlphaToCoverageEnabled;
return(_device.CreateBlendState(d3dBlendStateDesc));
}
