private ConstParameterBinding <T> GetParameterBinding <T>(bool useDetailPass, string parameterName)
{
string renderPass = useDetailPass ? "Detail" : "Base";
EffectBinding effectBinding;
if (!Material.TryGet(renderPass, out effectBinding))
{
throw new GraphicsException(
string.Format(
CultureInfo.InvariantCulture,
"Cannot access effect parameter '{0}' from the layer material because the material " +
"material does not have a render pass '{1}'.", parameterName, renderPass));
}
var parameterBindingUntyped = effectBinding.ParameterBindings[parameterName];
if (parameterBindingUntyped == null)
{
throw new GraphicsException(
string.Format(
CultureInfo.InvariantCulture,
"Cannot access effect parameter '{0}' from the layer material because the effect " +
"does not have this parameter.", parameterName));
}
var parameterBinding = parameterBindingUntyped as ConstParameterBinding <T>;
if (parameterBinding == null)
{
// Special handling of Texture2D which is often stored as Texture:
// Replace ConstParameterBinding<Texture> with ConstParameterBinding<Texture2D>.
if (typeof(T) == typeof(Texture2D))
{
var parameterBinding2 = effectBinding.ParameterBindings[parameterName] as ConstParameterBinding <Texture>;
if (parameterBinding2 != null)
{
var value = (T)(object)parameterBinding2.Value;
parameterBinding = effectBinding.Set(parameterBinding2.Parameter, value);
}
}
}
if (parameterBinding == null)
{
throw new GraphicsException(
string.Format(
CultureInfo.InvariantCulture,
"Cannot access effect parameter '{0}' (expected type: '{1}') from the layer material " +
"because the parameter binding is not a ConstParameterBinding or the effect parameter is " +
"of a different type.", parameterName, typeof(T).Name));
}
return(parameterBinding);
}
private ConstParameterBinding <T> TryGetParameterBinding <T>(bool useDetailPass, string parameterName)
{
string renderPass = useDetailPass ? "Detail" : "Base";
EffectBinding effectBinding;
if (!Material.TryGet(renderPass, out effectBinding))
{
return(null);
}
var parameterBindingUntyped = effectBinding.ParameterBindings[parameterName];
if (parameterBindingUntyped == null)
{
return(null);
}
var parameterBinding = parameterBindingUntyped as ConstParameterBinding <T>;
if (parameterBinding == null)
{
// Special handling of Texture2D which is often stored as Texture:
// Replace ConstParameterBinding<Texture> with ConstParameterBinding<Texture2D>.
if (typeof(T) == typeof(Texture2D))
{
var parameterBinding2 = effectBinding.ParameterBindings[parameterName] as ConstParameterBinding <Texture>;
if (parameterBinding2 != null)
{
var value = (T)(object)parameterBinding2.Value;
parameterBinding = effectBinding.Set(parameterBinding2.Parameter, value);
}
}
}
return(parameterBinding);
}