/// <summary>
/// Copy all properties that are marked as inherited from a parent <see cref="BlendingParameters"/> object.
/// </summary>
/// <param name="parent">The parent <see cref="BlendingParameters"/> from which to copy inherited properties.</param>
public void CopyFromParent(BlendingParameters parent)
{
if (Source == BlendingType.Inherit)
{
Source = parent.Source;
}
if (Destination == BlendingType.Inherit)
{
Destination = parent.Destination;
}
if (SourceAlpha == BlendingType.Inherit)
{
SourceAlpha = parent.SourceAlpha;
}
if (DestinationAlpha == BlendingType.Inherit)
{
DestinationAlpha = parent.DestinationAlpha;
}
if (RGBEquation == BlendingEquation.Inherit)
{
RGBEquation = parent.RGBEquation;
}
if (AlphaEquation == BlendingEquation.Inherit)
{
AlphaEquation = parent.AlphaEquation;
}
}
/// <summary>
/// Any properties marked as inherited will have their blending mode changed to the default type. This can occur when a root element is set to inherited.
/// </summary>
public void ApplyDefaultToInherited()
{
if (Source == BlendingType.Inherit)
{
Source = BlendingType.SrcAlpha;
}
if (Destination == BlendingType.Inherit)
{
Destination = BlendingType.OneMinusSrcAlpha;
}
if (SourceAlpha == BlendingType.Inherit)
{
SourceAlpha = BlendingType.One;
}
if (DestinationAlpha == BlendingType.Inherit)
{
DestinationAlpha = BlendingType.One;
}
if (RGBEquation == BlendingEquation.Inherit)
{
RGBEquation = BlendingEquation.Add;
}
if (AlphaEquation == BlendingEquation.Inherit)
{
AlphaEquation = BlendingEquation.Add;
}
}
public void TestOpaqueBoxWithNonAddAlphaEquation(BlendingEquation equationMode)
{
createBox(b =>
{
var blending = BlendingParameters.Inherit;
blending.AlphaEquation = equationMode;
b.Blending = blending;
});
AddAssert("doesn't render interior", () => !blendedBox.CanDrawOpaqueInterior);
}
public void TestOpaqueBoxWithNonAddAlphaEquation(BlendingEquation equationMode)
{
createBox(b =>
{
b.Blending = new BlendingParameters
{
Mode = BlendingMode.Inherit,
AlphaEquation = equationMode,
RGBEquation = BlendingEquation.Inherit
};
});
AddAssert("doesn't render interior", () => !blendedBox.CanDrawOpaqueInterior);
}
private static BlendEquationMode translateEquation(BlendingEquation blendingEquation)
{
switch (blendingEquation)
{
default:
case BlendingEquation.Inherit:
case BlendingEquation.Add:
return(BlendEquationMode.FuncAdd);
case BlendingEquation.Min:
return(BlendEquationMode.Min);
case BlendingEquation.Max:
return(BlendEquationMode.Max);
case BlendingEquation.Subtract:
return(BlendEquationMode.FuncSubtract);
case BlendingEquation.ReverseSubtract:
return(BlendEquationMode.FuncReverseSubtract);
}
}
public void BlendEquationSeparate(BlendingEquation modeRGB, BlendingEquation modeAlpha) => this.CallMethod <object>(BLEND_EQUATION_SEPARATE, modeRGB, modeAlpha);
public void BlendEquation(BlendingEquation equation) => this.CallMethod <object>(BLEND_EQUATION, equation);