/// <summary>
/// Gets a blend state which corresponds to the specified emitter blend mode.
/// </summary>
/// <param name="blendMode">The blend mode of the emitter.</param>
/// <returns>A blend state instance.</returns>
static public BlendState GetBlendState(EmitterBlendMode blendMode)
{
switch (blendMode)
{
case EmitterBlendMode.Add:
return(BlendStateFactory.Add);
case EmitterBlendMode.Alpha:
return(BlendStateFactory.Alpha);
#if !WINDOWS_PHONE
case EmitterBlendMode.Compare:
return(BlendStateFactory.Compare);
case EmitterBlendMode.Contrast:
return(BlendStateFactory.Contrast);
case EmitterBlendMode.Screen:
return(BlendStateFactory.Screen);
case EmitterBlendMode.Subtract:
return(BlendStateFactory.Subtract);
#endif
default:
#if WINRT
throw new ArgumentException(String.Format("blendMode {0} {1}", (Int32)blendMode, typeof(EmitterBlendMode)));
#else
throw new InvalidEnumArgumentException("blendMode", (Int32)blendMode, typeof(EmitterBlendMode));
#endif
}
}
/// <summary>
/// Gets the BlendState object corresponding to the specified EmitterBlendMode value.
/// </summary>
/// <param name="emitterBlendMode">The EmitterBlendMode value.</param>
/// <returns>A BlendState object.</returns>
private BlendState GetBlendState(EmitterBlendMode emitterBlendMode)
{
switch (emitterBlendMode)
{
case EmitterBlendMode.Alpha:
{
return(BlendState.NonPremultiplied);
}
case EmitterBlendMode.Add:
{
return(this.NonPremultipliedAdditive);
}
default:
{
throw new InvalidEnumArgumentException("emitterBlendMode", (int)emitterBlendMode, typeof(EmitterBlendMode));
}
}
}
/// <summary>
/// Gets a blend state which corresponds to the specified emitter blend mode.
/// </summary>
/// <param name="blendMode">The blend mode of the emitter.</param>
/// <returns>A blend state instance.</returns>
static public BlendState GetBlendState(EmitterBlendMode blendMode)
{
switch (blendMode)
{
case EmitterBlendMode.Alpha:
{
return BlendState.NonPremultiplied;
}
case EmitterBlendMode.Add:
{
return BlendStateFactory.NonPremultipliedAdditive;
}
default:
{
#if WINDOWS
throw new InvalidEnumArgumentException("blendMode", (int)blendMode, typeof(EmitterBlendMode));
#elif XBOX
throw new ArgumentException((int)blendMode + " is not a valid value for EmitterBlendMode!");
#endif
}
}
}
private static BlendState GetBlendState(EmitterBlendMode emitterBlendMode)
{
switch (emitterBlendMode)
{
case EmitterBlendMode.Alpha:
{
return(BlendState.NonPremultiplied);
}
case EmitterBlendMode.Add:
{
return(new BlendState
{
AlphaBlendFunction = BlendFunction.Add,
AlphaDestinationBlend = Blend.One,
AlphaSourceBlend = Blend.SourceAlpha,
ColorBlendFunction = BlendFunction.Add,
ColorDestinationBlend = Blend.One,
ColorSourceBlend = Blend.SourceAlpha,
});;
}
}
return(BlendState.AlphaBlend);
}
/// <summary>
/// Gets the BlendState object corresponding to the specified EmitterBlendMode value.
/// </summary>
/// <param name="emitterBlendMode">The EmitterBlendMode value.</param>
/// <returns>A BlendState object.</returns>
private BlendState GetBlendState(EmitterBlendMode emitterBlendMode)
{
switch (emitterBlendMode)
{
case EmitterBlendMode.Alpha:
{
return BlendState.NonPremultiplied;
}
case EmitterBlendMode.Add:
{
return this.NonPremultipliedAdditive;
}
default:
{
throw new InvalidEnumArgumentException("emitterBlendMode", (int)emitterBlendMode, typeof(EmitterBlendMode));
}
}
}
/// <summary>
/// Gets a blend state which corresponds to the specified emitter blend mode.
/// </summary>
/// <param name="blendMode">The blend mode of the emitter.</param>
/// <returns>A blend state instance.</returns>
static public BlendState GetBlendState(EmitterBlendMode blendMode)
{
switch (blendMode)
{
case EmitterBlendMode.Add:
return BlendStateFactory.Add;
case EmitterBlendMode.Alpha:
return BlendStateFactory.Alpha;
#if !WINDOWS_PHONE
case EmitterBlendMode.Compare:
return BlendStateFactory.Compare;
case EmitterBlendMode.Contrast:
return BlendStateFactory.Contrast;
case EmitterBlendMode.Screen:
return BlendStateFactory.Screen;
case EmitterBlendMode.Subtract:
return BlendStateFactory.Subtract;
#endif
default:
throw new InvalidEnumArgumentException("blendMode", (Int32)blendMode, typeof(EmitterBlendMode));
}
}
private static BlendType ToCoreBlend(EmitterBlendMode mercury)
{
BlendType blend;
switch (mercury)
{
case EmitterBlendMode.Add: blend = BlendType.Add; break;
case EmitterBlendMode.Alpha: blend = BlendType.Alpha; break;
case EmitterBlendMode.None: blend = BlendType.None; break;
default: blend = BlendType.Add; break;
}
return blend;
}
