void Model::CreateFromSDKMeshFile(ID3D11Device* device, LPCWSTR fileName)
{
_ASSERT(FileExists(fileName));
// Use the SDKMesh class to load in the data
SDKMesh sdkMesh;
sdkMesh.Create(fileName);
wstring directory = GetDirectoryFromFileName(fileName);
// Make materials
UINT numMaterials = sdkMesh.GetNumMaterials();
for (UINT i = 0; i < numMaterials; ++i)
{
MeshMaterial material;
SDKMESH_MATERIAL* mat = sdkMesh.GetMaterial(i);
memcpy(&material.AmbientAlbedo, &mat->Ambient, sizeof(D3DXVECTOR4));
memcpy(&material.DiffuseAlbedo, &mat->Diffuse, sizeof(D3DXVECTOR4));
memcpy(&material.SpecularAlbedo, &mat->Specular, sizeof(D3DXVECTOR4));
memcpy(&material.Emissive, &mat->Emissive, sizeof(D3DXVECTOR4));
material.Alpha = mat->Diffuse.w;
material.SpecularPower = mat->Power;
material.DiffuseMapName = AnsiToWString(mat->DiffuseTexture);
material.NormalMapName = AnsiToWString(mat->NormalTexture);
LoadMaterialResources(material, directory, device);
meshMaterials.push_back(material);
}
// Make a D3D9 device
IDirect3DDevice9Ptr d3d9Device = CreateD3D9Device();
UINT numMeshes = sdkMesh.GetNumMeshes();
for (UINT meshIdx = 0; meshIdx < numMeshes; ++meshIdx)
{
// Figure out the index type
UINT ops = D3DXMESH_MANAGED;
UINT indexSize = 2;
Mesh::IndexType indexType = Mesh::Index16Bit;
if (sdkMesh.GetIndexType(meshIdx) == IT_32BIT)
{
ops |= D3DXMESH_32BIT;
indexSize = 4;
indexType = Mesh::Index32Bit;
}
// Make a D3DX mesh
ID3DXMesh* d3dxMesh = NULL;
UINT numPrims = static_cast<UINT>(sdkMesh.GetNumIndices(meshIdx) / 3);
UINT numVerts = static_cast<UINT>(sdkMesh.GetNumVertices(meshIdx, 0));
UINT vbIndex = sdkMesh.GetMesh(meshIdx)->VertexBuffers[0];
UINT ibIndex = sdkMesh.GetMesh(meshIdx)->IndexBuffer;
const D3DVERTEXELEMENT9* vbElements = sdkMesh.VBElements(vbIndex);
DXCall(D3DXCreateMesh(numPrims, numVerts, ops, vbElements, d3d9Device, &d3dxMesh));
IUnknownReleaser<ID3DXMesh> meshReleaser(d3dxMesh);
// Copy in vertex data
BYTE* verts = NULL;
BYTE* srcVerts = reinterpret_cast<BYTE*>(sdkMesh.GetRawVerticesAt(vbIndex));
UINT vbStride = sdkMesh.GetVertexStride(meshIdx, 0);
UINT declStride = D3DXGetDeclVertexSize(vbElements, 0);
DXCall(d3dxMesh->LockVertexBuffer(0, reinterpret_cast<void**>(&verts)));
for (UINT vertIdx = 0; vertIdx < numVerts; ++vertIdx)
{
memcpy(verts, srcVerts, declStride);
verts += declStride;
srcVerts += vbStride;
}
DXCall(d3dxMesh->UnlockVertexBuffer());
// Copy in index data
void* indices = NULL;
void* srcIndices = sdkMesh.GetRawIndicesAt(ibIndex);
DXCall(d3dxMesh->LockIndexBuffer(0, &indices));
memcpy(indices, srcIndices, numPrims * 3 * indexSize);
DXCall(d3dxMesh->UnlockIndexBuffer());
// Set up the attribute table
DWORD* attributeBuffer = NULL;
DXCall(d3dxMesh->LockAttributeBuffer(0, &attributeBuffer));
UINT numSubsets = sdkMesh.GetNumSubsets(meshIdx);
D3DXATTRIBUTERANGE* attributes = new D3DXATTRIBUTERANGE[numSubsets];
ArrayDeleter<D3DXATTRIBUTERANGE> attributeDeleter(attributes);
for (UINT i = 0; i < numSubsets; ++i)
{
SDKMESH_SUBSET* subset = sdkMesh.GetSubset(meshIdx, i);
attributes[i].AttribId = subset->MaterialID;
attributes[i].FaceStart = static_cast<DWORD>(subset->IndexStart / 3);
attributes[i].FaceCount = static_cast<DWORD>(subset->IndexCount / 3);
attributes[i].VertexStart = static_cast<DWORD>(subset->VertexStart);
// attributes[i].VertexCount = static_cast<DWORD>(subset->VertexCount);
attributes[i].VertexCount = numVerts;
for (UINT faceIdx = attributes[i].FaceStart; faceIdx < attributes[i].FaceStart + attributes[i].FaceCount; ++faceIdx)
attributeBuffer[faceIdx] = subset->MaterialID;
}
DXCall(d3dxMesh->UnlockAttributeBuffer());
d3dxMesh->SetAttributeTable(attributes, numSubsets);
// Generate initial adjacency
vector<DWORD> initialAdjacency;
initialAdjacency.resize(d3dxMesh->GetNumFaces() * 3);
DXCall(d3dxMesh->GenerateAdjacency(0.0001f, &initialAdjacency[0]));
// Make the mesh
Mesh mesh;
mesh.CreateFromD3DXMesh(directory, device, d3d9Device, d3dxMesh, false, false, &initialAdjacency[0], indexType);
meshes.push_back(mesh);
}
}
