/// <summary>
/// Sets the blending function to draw with.
/// </summary>
/// <param name="blendingInfo">The infor we should use to update the active state.</param>
public static void SetBlend(BlendingInfo blendingInfo)
{
if (lastBlendingInfo.Equals(blendingInfo))
{
return;
}
FlushCurrentBatch();
if (blendingInfo.IsDisabled)
{
if (!lastBlendingEnabledState.HasValue || lastBlendingEnabledState.Value)
{
GL.Disable(EnableCap.Blend);
}
lastBlendingEnabledState = false;
}
else
{
if (!lastBlendingEnabledState.HasValue || !lastBlendingEnabledState.Value)
{
GL.Enable(EnableCap.Blend);
}
lastBlendingEnabledState = true;
GL.BlendEquationSeparate(blendingInfo.RGBEquation, blendingInfo.AlphaEquation);
GL.BlendFuncSeparate(blendingInfo.Source, blendingInfo.Destination, blendingInfo.SourceAlpha, blendingInfo.DestinationAlpha);
}
lastBlendingInfo = blendingInfo;
}
