/// <summary>
/// Begins a new sprite batch using the appropriate settings for rendering UPF.
/// </summary>
/// <param name="sortMode">The sorting mode to use when rendering interface elements.</param>
/// <param name="blendState">The blend state to apply to the rendered elements.</param>
/// <param name="samplerState">The sampler state to apply to the rendered interface elements.</param>
/// <param name="effect">The custom effect to apply to the rendered interface elements.</param>
/// <param name="localTransform">The transform matrix to apply to the rendered interface elements.</param>
public void Begin(SpriteSortMode sortMode, BlendState blendState, SamplerState samplerState, Effect effect, Matrix localTransform)
{
if (SpriteBatch == null)
throw new InvalidOperationException(PresentationStrings.DrawingContextDoesNotHaveSpriteBatch);
this.localTransform = localTransform;
this.combinedTransform = Matrix.Identity;
Matrix.Concat(ref localTransform, ref globalTransform, out combinedTransform);
SpriteBatch.Begin(sortMode,
blendState ?? BlendState.AlphaBlend,
samplerState ?? SamplerState.LinearClamp,
StencilReadDepthState, RasterizerState.CullCounterClockwise, effect, combinedTransform);
}
/// <inheritdoc/>
public void SetBlendState(BlendState state)
{
Contract.EnsureNotDisposed(this, Disposed);
}
/// <inheritdoc/>
public void SetBlendState(BlendState state)
{
Contract.Require(state, "state");
Contract.EnsureNotDisposed(this, Disposed);
Ultraviolet.ValidateResource(state);
if (this.blendState != state)
{
this.blendState = (OpenGLBlendState)state;
this.blendState.Apply();
}
}
