/// <summary>
/// Merge this state with another one.
/// </summary>
/// <param name="state">
/// A <see cref="IGraphicsState"/> having the same <see cref="StateIdentifier"/> of this state.
/// </param>
public override void Merge(IGraphicsState state)
{
if (state == null)
{
throw new ArgumentNullException("state");
}
RenderBufferState otherState = state as RenderBufferState;
if (otherState == null)
{
throw new ArgumentException("not a RenderBufferState", "state");
}
// The actual binding name
mDrawBinding = otherState.mDrawBinding;
// The framebuffer object
mDrawFramebuffer = otherState.mDrawFramebuffer;
if (mDrawFramebuffer != null)
{
mDrawFramebuffer.IncRef();
}
// The draw buffers
if (otherState.mDrawBuffers != null)
{
mDrawBuffers = new int[otherState.mDrawBuffers.Length];
Array.Copy(otherState.mDrawBuffers, mDrawBuffers, mDrawBuffers.Length);
}
else
{
mDrawBuffers = null;
}
}
/// <summary>
/// Performs a deep copy of this <see cref="IGraphicsState"/>.
/// </summary>
/// <returns>
/// It returns the equivalent of this <see cref="IGraphicsState"/>, but all objects referenced
/// are not referred by both instances.
/// </returns>
public override IGraphicsState Copy()
{
RenderBufferState copy = base.Copy() as RenderBufferState;
copy.mDrawBuffers = new int[mDrawBuffers.Length];
Array.Copy(mDrawBuffers, copy.mDrawBuffers, mDrawBuffers.Length);
return(copy);
}
/// <summary>
/// Indicates whether the current object is equal to another object of the same type.
/// </summary>
/// <param name="other">
/// A <see cref="GraphicsState"/> to compare to this GraphicsState.
/// </param>
/// <returns>
/// It returns true if the current object is equal to <paramref name="other"/>.
/// </returns>
/// <remarks>
/// <para>
/// This method test only whether <paramref name="other"/> type equals to this type.
/// </para>
/// </remarks>
/// <exception cref="ArgumentNullException">
/// This exception is thrown if the parameter <paramref name="other"/> is null.
/// </exception>
public override bool Equals(IGraphicsState other)
{
if (base.Equals(other) == false)
{
return(false);
}
Debug.Assert(other is RenderBufferState);
RenderBufferState otherState = (RenderBufferState)other;
if (mDrawBinding != otherState.mDrawBinding)
{
return(false);
}
return(true);
}