protected void ReadVertexBuffer(XmlNode node, VertexData vertexData, XmlVertexData xmlVertexData)
{
bool positions = false;
bool normals = false;
bool colours_diffuse = false;
bool colours_specular = false;
int texture_coords = 0;
foreach (XmlAttribute attr in node.Attributes)
{
switch (attr.Name)
{
case "positions":
if (attr.Value == "true")
{
positions = true;
xmlVertexData.positionData = new float[xmlVertexData.vertexCount, 3];
}
break;
case "normals":
if (attr.Value == "true")
{
normals = true;
xmlVertexData.normalData = new float[xmlVertexData.vertexCount, 3];
}
break;
case "colours_diffuse":
if (attr.Value == "true")
{
colours_diffuse = true;
xmlVertexData.diffuseData = new uint[xmlVertexData.vertexCount];
}
break;
case "colours_specular":
if (attr.Value == "true")
{
colours_specular = true;
xmlVertexData.specularData = new uint[xmlVertexData.vertexCount];
}
break;
case "texture_coords":
texture_coords = int.Parse(attr.Value);
break;
case "texture_coord_dimensions_0":
case "texture_coord_dimensions_1":
case "texture_coord_dimensions_2":
case "texture_coord_dimensions_3":
case "texture_coord_dimensions_4":
case "texture_coord_dimensions_5":
case "texture_coord_dimensions_6":
case "texture_coord_dimensions_7":
break;
default:
DebugMessage(node, attr);
break;
}
}
for (int i = 0; i < texture_coords; ++i)
{
string key = string.Format("texture_coord_dimensions_{0}", i);
XmlNode attrNode = node.Attributes.GetNamedItem(key);
if (attrNode != null)
{
xmlVertexData.AddTexture(int.Parse(attrNode.Value));
}
else
{
xmlVertexData.AddTexture(2);
}
}
int vertexIndex = 0;
foreach (XmlNode childNode in node.ChildNodes)
{
switch (childNode.Name)
{
case "vertex":
ReadVertex(childNode, xmlVertexData, vertexIndex++);
break;
default:
DebugMessage(childNode);
break;
}
}
if (positions)
{
AllocateBuffer(vertexData, VertexElementType.Float3,
VertexElementSemantic.Position, xmlVertexData.bindIdx++,
0, xmlVertexData.positionData);
}
if (normals)
{
AllocateBuffer(vertexData, VertexElementType.Float3,
VertexElementSemantic.Normal, xmlVertexData.bindIdx++,
0, xmlVertexData.normalData);
}
if (colours_diffuse)
{
AllocateBuffer(vertexData, VertexElementType.Color,
VertexElementSemantic.Diffuse, xmlVertexData.bindIdx++,
0, xmlVertexData.diffuseData);
}
if (colours_specular)
{
AllocateBuffer(vertexData, VertexElementType.Color,
VertexElementSemantic.Specular, xmlVertexData.bindIdx++,
0, xmlVertexData.specularData);
}
for (int i = 0; i < texture_coords; ++i)
{
int dim = xmlVertexData.GetTextureData(i).GetLength(1);
AllocateBuffer(vertexData,
VertexElement.MultiplyTypeCount(VertexElementType.Float1, dim),
VertexElementSemantic.TexCoords, xmlVertexData.bindIdx++,
i, xmlVertexData.GetTextureData(i));
}
// We have read the textures for this vertex buffer node.
xmlVertexData.textureOffset += texture_coords;
}