/// <summary>
///
/// </summary>
/// <param name="vertexArrayType"></param>
public ArrayBufferItemAttribute(ArrayBufferItemType vertexArrayType)
{
ArrayType = vertexArrayType;
ArrayBaseType = vertexArrayType.GetVertexBaseType();
ArrayLength = vertexArrayType.GetArrayLength();
ArrayRank = vertexArrayType.GetArrayRank();
}
/// <summary>
/// Get the size of a vertex array buffer item, in bytes.
/// </summary>
/// <param name="vertexArrayType">
/// A <see cref="ArrayBufferItemType"/> that describe the vertex array buffer item.
/// </param>
/// <returns>
/// It returns the size of the vertex array buffer type having the type <paramref name="vertexArrayType"/>, in bytes.
/// </returns>
public static uint GetItemSize(this ArrayBufferItemType vertexArrayType)
{
uint baseTypeSize = vertexArrayType.GetVertexBaseType().GetSize();
uint length = vertexArrayType.GetArrayLength();
uint rank = vertexArrayType.GetArrayRank();
return(baseTypeSize * length * rank);
}
/// <summary>
/// Get whether a <see cref="ArrayBufferItemType"/> is a vector type (vec2, vec3, ...).
/// </summary>
/// <param name="vertexArrayType">
/// A <see cref="ArrayBufferItemType"/> that describe the vertex array buffer item.
/// </param>
/// <returns>
/// It returns a boolean value indicating whether <paramref name="vertexArrayType"/> is a vector type.
/// </returns>
public static bool IsArrayVectorType(this ArrayBufferItemType vertexArrayType)
{
return((vertexArrayType.GetArrayLength() > 1) && (vertexArrayType.GetArrayRank() == 1));
}
/// <summary>
/// Get whether a <see cref="ArrayBufferItemType"/> is a simple type (float, int, ...).
/// </summary>
/// <param name="vertexArrayType">
/// A <see cref="ArrayBufferItemType"/> that describe the vertex array buffer item.
/// </param>
/// <returns>
/// It returns a boolean value indicating whether <paramref name="vertexArrayType"/> is a simple type.
/// </returns>
public static bool IsArraySimpleType(this ArrayBufferItemType vertexArrayType)
{
return(vertexArrayType.GetArrayLength() == 1 && vertexArrayType.GetArrayRank() == 1);
}