//-----------------------------------------------------------------------
VertexDeclaration* HardwareBufferManagerBase::createVertexDeclarationImpl(void)
{
return OGRE_NEW VertexDeclaration();
}
//разбор вершинного потока
void ParseVertexStream (Parser::Iterator vs_iter)
{
//чтение идентификатора потока
const char* id = get<const char*> (*vs_iter, "id");
//определение числа вершин и размера вершины
unsigned int vertices_count = get<unsigned int> (*vs_iter, "vertices_count"),
vertex_size = get<unsigned int> (*vs_iter, "vertex_size");
VertexFormat vertex_format;
//разбор вершинного формата
for_each_child (*vs_iter, "channel", xtl::bind (&XmlMeshLibraryLoader::ParseVertexFormatChannel, this, _1, xtl::ref (vertex_format)));
//создание вершинного потока
VertexStream vs (vertices_count, VertexDeclaration (vertex_format, vertex_size));
//чтение данных
Parser::NamesakeIterator channel_iter = vs_iter->First ("channel");
for (uint32_t i=0, channel_count=vertex_format.AttributesCount (); i<channel_count; i++, ++channel_iter)
{
const VertexAttribute& attribute = vertex_format.Attribute (i);
for (;channel_iter && get<size_t> (*channel_iter, "offset", (size_t)-1) != attribute.offset; ++channel_iter);
if (!channel_iter)
return;
switch (attribute.type)
{
case VertexAttributeType_Float2:
read (*channel_iter, "#text", MakeVertexAttributeIterator<math::vec2f> (vs, attribute.offset), vertices_count);
break;
case VertexAttributeType_Float3:
read (*channel_iter, "#text", MakeVertexAttributeIterator<math::vec3f> (vs, attribute.offset), vertices_count);
break;
case VertexAttributeType_Float4:
read (*channel_iter,"#text", MakeVertexAttributeIterator<math::vec4f> (vs, attribute.offset), vertices_count);
break;
case VertexAttributeType_Short2:
read (*channel_iter, "#text", MakeVertexAttributeIterator<math::vec2s> (vs, attribute.offset), vertices_count);
break;
case VertexAttributeType_Short3:
read (*channel_iter, "#text", MakeVertexAttributeIterator<math::vec3s> (vs, attribute.offset), vertices_count);
break;
case VertexAttributeType_Short4:
read (*channel_iter,"#text", MakeVertexAttributeIterator<math::vec4s> (vs, attribute.offset), vertices_count);
break;
case VertexAttributeType_UByte4:
read (*channel_iter, "#text", MakeVertexAttributeIterator<math::vec4ub> (vs, attribute.offset), vertices_count);
break;
case VertexAttributeType_Influence:
read (*channel_iter, "#text", MakeVertexAttributeIterator<VertexInfluence> (vs, attribute.offset), vertices_count);
break;
default:
return;
}
}
//регистрация потока
vertex_streams.insert_pair (id, vs);
}
