private void BuildFFPSubRenderState( int subRenderStateOrder, string subRenderStateType,
ShaderGenerator.SGPass sgPass, TargetRenderState renderState )
{
if ( subRenderStateOrder == -1 )
{
throw new Exception( "Actual sub render type needs to be declared" );
}
SubRenderState subRenderState;
subRenderState = sgPass.GetCustomFFPSubState( subRenderStateOrder );
if ( subRenderState == null )
{
subRenderState = ShaderGenerator.Instance.CreateSubRenderState( subRenderStateType );
}
if ( subRenderState.PreAddToRenderState( renderState, sgPass.SrcPass, sgPass.DstPass ) )
{
renderState.AddSubRenderStateInstance( subRenderState );
}
else
{
ShaderGenerator.Instance.DestroySubRenderState( subRenderState );
}
}