/// <summary>
/// Deserializes the object and populates it from the input.
/// </summary>
/// <param name="input">Savable input</param>
/// <exception cref="Tesla.Core.TeslaException">Thrown if creating the underlying state implementation fails or the render
/// system is not set.</exception>
public override void Read(Content.ISavableReader input)
{
IRenderSystemProvider renderSystem = input.RenderSystem;
if (renderSystem == null)
{
Dispose();
throw new TeslaException("Render system provider not set, cannot create graphics resource implementation.");
}
base.RenderSystem = renderSystem;
try {
_impl = renderSystem.CreateBlendStateImplementation();
} catch (Exception e) {
Dispose();
throw new TeslaException("Error creating underlying implementation, see inner exception for details.", e);
}
_impl.AlphaBlendFunction = input.ReadEnum <BlendFunction>();
_impl.AlphaSourceBlend = input.ReadEnum <Blend>();
_impl.AlphaDestinationBlend = input.ReadEnum <Blend>();
_impl.ColorBlendFunction = input.ReadEnum <BlendFunction>();
_impl.ColorSourceBlend = input.ReadEnum <Blend>();
_impl.ColorDestinationBlend = input.ReadEnum <Blend>();
_impl.BlendFactor = input.ReadColor();
_impl.MultiSampleMask = input.ReadInt();
int numBlends = _impl.BlendEnableCount;
int numMasks = _impl.ColorWriteChannelsCount;
//Need to be careful here, this can change across different implementations. Just read in what we can and move on.
int readNumBlends = input.ReadInt();
for (int i = 0; i < numBlends; i++)
{
_impl.SetBlendEnable(i, input.ReadBoolean());
}
int readNumMasks = input.ReadInt();
for (int i = 0; i < numMasks; i++)
{
_impl.SetWriteChannels(i, (ColorWriteChannels)input.ReadInt());
}
}
/// <summary>
/// Sets the write mask used by the render target specified by its index.
/// </summary>
/// <param name="index">Render target index</param>
/// <param name="mask">Color write mask to use</param>
public void SetWriteChannels(int index, ColorWriteChannels mask)
{
_impl.SetWriteChannels(index, mask);
}