void SkinController::OnFirstUpdate()
{
// Get access to the vertex buffer positions to store the blended targets.
Visual* visual = reinterpret_cast<Visual*>(mObject);
VertexBuffer* vbuffer = visual->GetVertexBuffer().get();
if (mNumVertices == static_cast<int>(vbuffer->GetNumElements()))
{
// Get the position data.
VertexFormat vformat = vbuffer->GetFormat();
int const numAttributes = vformat.GetNumAttributes();
for (int i = 0; i < numAttributes; ++i)
{
VASemantic semantic;
DFType type;
unsigned int unit, offset;
if (vformat.GetAttribute(i, semantic, type, unit, offset))
{
if (semantic == VA_POSITION && (type == DF_R32G32B32_FLOAT
|| type == DF_R32G32B32A32_FLOAT))
{
mPosition = vbuffer->GetData() + offset;
mStride = vformat.GetVertexSize();
mCanUpdate = true;
break;
}
}
}
}
mCanUpdate = (mPosition != nullptr);
}