internal EffectConstantBuffer(string name, int size, EffectParameterDescription[] paramDescription)
: base(size)
{
_device = GraphicManager.Device;
Name = name;
Size = size;
_hashCode = GetHashCode(name, size, paramDescription);
if (paramDescription != null)
{
Parameters = new Dictionary<string, EffectParameter>(paramDescription.Length);
for (int i = 0; i < paramDescription.Length; i++)
{
EffectParameter parameter = new EffectParameter(paramDescription[i], this);
Parameters.Add(parameter.Name, parameter);
}
}
Clear();
_nativeBuffer = Buffer.NewConstantBuffer(size);
IsDirty = true;
}
int GetHashCode(string name, int size, EffectParameterDescription[] paramDescription)
{
return 0;
}
EffectConstantBuffer CreateCBuffer(XmlNode node)
{
string name = node.Attributes["name"].Value;
List<EffectParameterDescription> descriptions = new List<EffectParameterDescription>();
int currentOffset = 0;
foreach (XmlNode child in node)
{
EffectParameterDescription description = new EffectParameterDescription();
int attributeSize;
description.Name = child.Attributes["name"].Value;
description.Offset = currentOffset;
switch (child.Attributes["type"].Value.ToLower())
{
case "matrix":
description.Class = ParamClass.MatrixRows;
description.Type = ParamType.Float;
description.RowCount = 4;
description.ColumnCount = 4;
description.ElementCount = 16;
description.ElementSize = Utilities.SizeOf<float>();
attributeSize = Utilities.SizeOf<Matrix>();
descriptions.Add(description);
break;
case "struct":
description.Class = ParamClass.Struct;
description.ElementCount = 1;
description.ElementSize = Convert.ToInt32(child.Attributes["size"].Value);
attributeSize = Convert.ToInt32(child.Attributes["size"].Value);;
descriptions.Add(description);
break;
case "vector3":
description.Class = ParamClass.Vector;
description.Type = ParamType.Float;
description.RowCount = 1;
description.ColumnCount = 3;
description.ElementCount = 3;
description.ElementSize = Utilities.SizeOf<float>();
attributeSize = Utilities.SizeOf<Vector3>();
descriptions.Add(description);
break;
case "vector4":
description.Class = ParamClass.Vector;
description.Type = ParamType.Float;
description.RowCount = 1;
description.ColumnCount = 4;
description.ElementCount = 4;
description.ElementSize = Utilities.SizeOf<float>();
attributeSize = Utilities.SizeOf<Vector4>();
descriptions.Add(description);
break;
default:
throw new Exception("Uknown type for CBuffer Attribute");
}
currentOffset += attributeSize;
}
// El tamaño del cbuffer tiene que ser multiplo de 16
int size = (currentOffset % 16) != 0 ? ((currentOffset / 16) + 1) * 16 : currentOffset;
EffectConstantBuffer cb = new EffectConstantBuffer(name, size, descriptions.ToArray());
return cb;
}
