internal static VertexLayoutId GetLayout(params MyVertexInputComponent[] components)
{
if (components == null || components.Length == 0)
{
return(Empty);
}
var hash = 0;
foreach (var c in components)
{
MyHashHelper.Combine(ref hash, c.GetHashCode());
}
if (HashIndex.ContainsKey(hash))
{
return(HashIndex[hash]);
}
var id = new VertexLayoutId {
Index = Layouts.Allocate()
};
HashIndex[hash] = id;
var declarationBuilder = new StringBuilder();
var sourceBuilder = new StringBuilder();
var semanticDict = new Dictionary <string, int>();
// Might save some allocations when each AddComponent only adds one element as then we can use GetInternalArray and Capacity set does nothing
var elementsList = new List <InputElement>(components.Length);
foreach (var component in components)
{
MyVertexInputLayout.m_mapComponent[component.Type].AddComponent(component, elementsList, semanticDict, declarationBuilder, sourceBuilder);
}
elementsList.Capacity = elementsList.Count;
Debug.Assert(elementsList.Count == elementsList.Capacity);
Layouts.Data[id.Index] = new MyVertexLayoutInfo {
Components = components,
Elements = elementsList.GetInternalArray(),
Macros = MyComponent.GetComponentMacros(declarationBuilder.ToString(), sourceBuilder.ToString()),
HasBonesInfo = components.Any(x => x.Type == MyVertexInputComponentType.BLEND_INDICES)
};
return(id);
}
private void Build()
{
var declarationBuilder = new StringBuilder();
var sourceBuilder = new StringBuilder();
var elementsList = new List <InputElement>();
var semanticDict = new Dictionary <string, int>();
foreach (var component in m_components)
{
m_mapComponent[component.Type].AddComponent(component, elementsList, semanticDict, declarationBuilder, sourceBuilder);
}
m_elements = elementsList.ToArray();
m_macros = MyComponent.GetComponentMacros(declarationBuilder.ToString(), sourceBuilder.ToString());
}
