/// <summary>
/// Basic stencil clipping. Depth disabled.
/// This assumes the stencil was cleared with 'RenderPassDepthStencilDesc.stencilValue = 1'
/// </summary>
/// <param name="stencilClip">True to clip or false to write clipping mask</param>
/// <param name="doubleSidedFacing">False to only use front-faces or True for both front and back faces</param>
public static DepthStencilDesc BasicStencilTesting(bool stencilClip, bool doubleSidedFacing)
{
var result = new DepthStencilDesc()
{
stencilTestEnable = stencilClip,
stencilWriteEnable = !stencilClip
};
result.stencilFrontFacingDesc.stencilTestFunction = stencilClip ? DepthStencilTestFunction.LessThan : DepthStencilTestFunction.Always;
result.stencilFrontFacingDesc.stencilFailOperation = StencilOperation.Keep;
result.stencilFrontFacingDesc.stencilDepthFailOperation = StencilOperation.Keep;
result.stencilFrontFacingDesc.stencilPassOperation = stencilClip ? StencilOperation.Keep : StencilOperation.Zero;
if (doubleSidedFacing)
{
result.stencilBackFacingDesc = result.stencilFrontFacingDesc;
}
else
{
result.stencilBackFacingDesc.stencilTestFunction = DepthStencilTestFunction.Never;
result.stencilBackFacingDesc.stencilFailOperation = StencilOperation.Keep;
result.stencilBackFacingDesc.stencilDepthFailOperation = StencilOperation.Keep;
result.stencilBackFacingDesc.stencilPassOperation = StencilOperation.Keep;
}
return(result);
}
/// <summary>
/// Standard depth testing. Stencil disabled.
/// </summary>
public static DepthStencilDesc StandardDepthTesting()
{
var result = new DepthStencilDesc()
{
depthTestEnable = true,
depthWriteEnable = true,
depthTestFunction = DepthStencilTestFunction.LessThan
};
return(result);
}