/// <summary>
/// Common gather texture function.
/// </summary>
/// <param name="node">The node to look into.</param>
/// <param name="materialContext">The visitor context.</param>
/// <returns>A collection of MaterialTextureNode.</returns>
private IEnumerable <MaterialTextureNode> GatherTextures(IMaterialNode node, MaterialContext materialContext)
{
var textureValues = new List <MaterialTextureNode>();
node.VisitNodes((context, nodeEntry) =>
{
var textureValue = nodeEntry.Node as MaterialTextureNode;
if (textureValue != null)
{
textureValues.Add(textureValue);
}
}, materialContext);
return(textureValues);
}
/// <summary>
/// Gather all the parameters in the node hierarchy.
/// </summary>
/// <param name="node">The node to look into.</param>
/// <param name="parameters">The parameter collection to fill.</param>
private void GetParametersFromNode(IMaterialNode node, ParameterCollectionData parameters)
{
if (node == null)
{
return;
}
node.VisitNodes((context, nodeEntry) =>
{
var shaderNode = nodeEntry.Node as MaterialShaderClassNode;
if (shaderNode != null)
{
//foreach (var member in shaderNode.Members)
foreach (var member in shaderNode.GetParameters(context))
{
parameters.Set(member.Key, member.Value);
}
}
}, new MaterialContext {
Material = Material, ExploreGenerics = false
});
}
/// <summary>
/// Gather all the sampler generics in the node hierarchy.
/// </summary>
/// <param name="node">The node to look into.</param>
/// <returns>A collection of NodeParameterSampler.</returns>
private IEnumerable <NodeParameterSampler> GatherSamplerValues(IMaterialNode node)
{
var samplerValues = new List <NodeParameterSampler>();
node.VisitNodes((context, nodeEntry) =>
{
var shaderClassNode = nodeEntry.Node as MaterialShaderClassNode;
if (shaderClassNode != null)
{
foreach (var gen in shaderClassNode.Generics)
{
var genSampler = gen.Value as NodeParameterSampler;
if (genSampler != null)
{
samplerValues.Add(genSampler);
}
}
}
}, new MaterialContext {
Material = Material, ExploreGenerics = false
});
return(samplerValues);
}