public VertexBufferImp(int[] buffer, VertexBufferDesc description) : base(buffer)
{
this.Description = description;
}
private void Setup(LmGeometry geometry)
{
// Create index buffer
var indexBufferDescription = new IndexBufferDesc(geometry.IdxBufferSize, geometry.IdxType);
this.IndexBuffer = new IndexBuffer(geometry.IdxBuffer, indexBufferDescription);
// Create vertex buffers
this.VertexCount = geometry.VtxNum;
this.TotalTriangleCount = geometry.IdxNum / 3;
this.TriangleCount = this.VertexCount;
var meshVertexDeclaration = new MeshVertexDeclaration();
var readFunctions = MakeReadFunctions();
for (byte i = 0; i < geometry.VtxStreamGroupDesc.VtxStreamDescs.Count; i++)
{
var vtxStreamDesc = geometry.VtxStreamGroupDesc.VtxStreamDescs[i];
var structuredVBDesc = vtxStreamDesc.StructuredVBDesc;
var vtxBufferDesc = new VertexBufferDesc(structuredVBDesc.Stride * this.VertexCount);
// Ugly hack
var vtxBuffer = new VertexBuffer(null, vtxBufferDesc); // new VertexBuffer(new ArraySegment<byte>(geometry.VtxBuffer, (int)structuredVBDesc.StartOffset, (int)vtxBufferDesc.Size), vtxBufferDesc);
this.VertexBuffers.Add(vtxBuffer);
if (i >= 8)
{
DefaultPrintFunction.Write("i<EBONY_COUNTOF(this->bufferStrides)");
}
// Add vertex elements
foreach (var vtxElementDesc in structuredVBDesc.VtxElementDescs)
{
var usage = LmVertexElementDesc.GetUsageFromSemantic(vtxElementDesc.Semantic);
var size = LmVertexElementDesc.FormatToVertexComponentCount(vtxElementDesc.Format);
var type = LmVertexElementDesc.FormatToVertexType(vtxElementDesc.Format);
var vertexElement = new VertexElement(i, type, usage, 0, (ushort)vtxElementDesc.Offset, (ushort)size, vtxElementDesc.Semantic, 0);
meshVertexDeclaration.AddVertexElement(vertexElement, vtxBuffer);
}
// Parse vertex buffer
//var vertexElementArrays = new Dictionary<string, IList>();
foreach (var vtxElementDesc in structuredVBDesc.VtxElementDescs)
{
var values = CreateVertexElementArray(vtxElementDesc.Format);
VertexElementArrays.Add(vtxElementDesc.Semantic, values);
}
var vertexBufferPosition = (int)structuredVBDesc.StartOffset;
for (var j = 0; j < vtxBufferDesc.Size / structuredVBDesc.Stride; j++)
{
foreach (var vtxElementDesc in structuredVBDesc.VtxElementDescs)
{
var readFunction = readFunctions[vtxElementDesc.Format];
var size = LmVertexElementDesc.FormatToVertexComponentCount(vtxElementDesc.Format);
for (var _ = 0; _ < size; _++)
{
var value = readFunction(geometry.VtxBuffer, vertexBufferPosition, out int componentSize);
VertexElementArrays[vtxElementDesc.Semantic].Add(value);
vertexBufferPosition += componentSize;
}
}
}
this.MainStreamSet = meshVertexDeclaration;
this.BoneInstanceCount = geometry.InstanceNum;
if (this.BoneInstanceCount != 0)
{
// TODO instance buffer
}
}
}
