void CreateMeshConstantsBuffer(ID3D11Device *device)
{
std::vector<MeshConstants> meshConstants(GetMeshCount());
for (int i = 0; i < GetMeshCount(); ++i)
{
meshConstants[i].faceCount = meshes_[i]->faceCount;
meshConstants[i].indexOffset = meshes_[i]->indexOffset;
meshConstants[i].vertexCount = meshes_[i]->vertexCount;
meshConstants[i].vertexOffset = meshes_[i]->vertexOffset;
}
D3D11_BUFFER_DESC bufferDesc = {};
bufferDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
bufferDesc.ByteWidth = static_cast<UINT>(meshConstants.size() * sizeof(MeshConstants));
bufferDesc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;
bufferDesc.StructureByteStride = sizeof(MeshConstants);
bufferDesc.Usage = D3D11_USAGE_IMMUTABLE;
D3D11_SUBRESOURCE_DATA initialData;
initialData.pSysMem = meshConstants.data();
initialData.SysMemPitch = bufferDesc.ByteWidth;
initialData.SysMemSlicePitch = bufferDesc.ByteWidth;
device->CreateBuffer(&bufferDesc, &initialData, &meshConstantsBuffer_);
SetDebugName(meshConstantsBuffer_.Get(), "Mesh constants buffer");
for (std::vector<std::unique_ptr<StaticMesh>>::iterator it = meshes_.begin(),
end = meshes_.end();
it != end; ++it)
{
(*it)->meshConstantsBuffer = meshConstantsBuffer_;
}
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
srvDesc.Format = DXGI_FORMAT_UNKNOWN;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_BUFFER;
srvDesc.Buffer.ElementOffset = 0;
srvDesc.Buffer.ElementWidth = GetMeshCount();
device->CreateShaderResourceView(
meshConstantsBuffer_.Get(), &srvDesc, &meshConstantsBufferView_);
SetDebugName(meshConstantsBufferView_.Get(), "Mesh constants buffer view");
}
bool NvModelExtVK::InitVertexState() {
uint32_t meshCount = GetMeshCount();
for (uint32_t meshIndex = 0; meshIndex < meshCount; ++meshIndex)
{
if (!GetMesh(meshIndex)->InitVertexState())
return false;
}
return true;
}
bool NvModelExtVK::AddInstanceData(uint32_t location, VkFormat format, uint32_t offset) {
uint32_t meshCount = GetMeshCount();
for (uint32_t meshIndex = 0; meshIndex < meshCount; ++meshIndex)
{
if (!GetMesh(meshIndex)->AddInstanceData(location, format, offset))
return false;
}
return true;
}
void NvModelExtGL::DrawElements(uint32_t instanceCount, GLint positionHandle, GLint normalHandle, GLint texcoordHandle, GLint tangentHandle)
{
uint32_t numMeshes = GetMeshCount();
for (uint32_t meshIndex = 0; meshIndex < numMeshes; ++meshIndex)
{
Nv::NvMeshExtGL* pMesh = GetMesh(meshIndex);
uint32_t matId = pMesh->GetMaterialID();
ActivateMaterial(matId);
pMesh->DrawElements(instanceCount, positionHandle, normalHandle, texcoordHandle, tangentHandle);
}
}
bool NvModelExtVK::EnableInstanceData(uint32_t instanceVertSize) {
uint32_t meshCount = GetMeshCount();
for (uint32_t meshIndex = 0; meshIndex < meshCount; ++meshIndex)
{
if (!GetMesh(meshIndex)->EnableInstanceData(instanceVertSize))
return false;
}
m_instanced = true;
return true;
}
bool KX_NavMeshObject::BuildNavMesh()
{
if (m_navMesh)
{
delete m_navMesh;
m_navMesh = NULL;
}
if (GetMeshCount()==0)
{
printf("Can't find mesh for navmesh object: %s\n", m_name.ReadPtr());
return false;
}
float *vertices = NULL, *dvertices = NULL;
unsigned short *polys = NULL, *dtris = NULL, *dmeshes = NULL;
int nverts = 0, npolys = 0, ndvertsuniq = 0, ndtris = 0;
int vertsPerPoly = 0;
if (!BuildVertIndArrays(vertices, nverts, polys, npolys,
dmeshes, dvertices, ndvertsuniq, dtris, ndtris, vertsPerPoly )
|| vertsPerPoly<3)
{
printf("Can't build navigation mesh data for object:%s\n", m_name.ReadPtr());
if (vertices) delete[] vertices;
return false;
}
MT_Point3 pos;
if (dmeshes==NULL)
{
for (int i=0; i<nverts; i++)
{
flipAxes(&vertices[i*3]);
}
for (int i=0; i<ndvertsuniq; i++)
{
flipAxes(&dvertices[i*3]);
}
}
buildMeshAdjacency(polys, npolys, nverts, vertsPerPoly);
float cs = 0.2f;
if (!nverts || !npolys)
{
if (vertices) delete[] vertices;
return false;
}
float bmin[3], bmax[3];
calcMeshBounds(vertices, nverts, bmin, bmax);
//quantize vertex pos
unsigned short* vertsi = new unsigned short[3*nverts];
float ics = 1.f/cs;
for (int i=0; i<nverts; i++)
{
vertsi[3*i+0] = static_cast<unsigned short>((vertices[3*i+0]-bmin[0])*ics);
vertsi[3*i+1] = static_cast<unsigned short>((vertices[3*i+1]-bmin[1])*ics);
vertsi[3*i+2] = static_cast<unsigned short>((vertices[3*i+2]-bmin[2])*ics);
}
// Calculate data size
const int headerSize = sizeof(dtStatNavMeshHeader);
const int vertsSize = sizeof(float)*3*nverts;
const int polysSize = sizeof(dtStatPoly)*npolys;
const int nodesSize = sizeof(dtStatBVNode)*npolys*2;
const int detailMeshesSize = sizeof(dtStatPolyDetail)*npolys;
const int detailVertsSize = sizeof(float)*3*ndvertsuniq;
const int detailTrisSize = sizeof(unsigned char)*4*ndtris;
const int dataSize = headerSize + vertsSize + polysSize + nodesSize +
detailMeshesSize + detailVertsSize + detailTrisSize;
unsigned char* data = new unsigned char[dataSize];
if (!data)
return false;
memset(data, 0, dataSize);
unsigned char* d = data;
dtStatNavMeshHeader* header = (dtStatNavMeshHeader*)d; d += headerSize;
float* navVerts = (float*)d; d += vertsSize;
dtStatPoly* navPolys = (dtStatPoly*)d; d += polysSize;
dtStatBVNode* navNodes = (dtStatBVNode*)d; d += nodesSize;
dtStatPolyDetail* navDMeshes = (dtStatPolyDetail*)d; d += detailMeshesSize;
float* navDVerts = (float*)d; d += detailVertsSize;
unsigned char* navDTris = (unsigned char*)d; d += detailTrisSize;
// Store header
header->magic = DT_STAT_NAVMESH_MAGIC;
header->version = DT_STAT_NAVMESH_VERSION;
header->npolys = npolys;
header->nverts = nverts;
header->cs = cs;
header->bmin[0] = bmin[0];
header->bmin[1] = bmin[1];
header->bmin[2] = bmin[2];
header->bmax[0] = bmax[0];
header->bmax[1] = bmax[1];
header->bmax[2] = bmax[2];
header->ndmeshes = npolys;
header->ndverts = ndvertsuniq;
header->ndtris = ndtris;
// Store vertices
for (int i = 0; i < nverts; ++i)
{
const unsigned short* iv = &vertsi[i*3];
float* v = &navVerts[i*3];
v[0] = bmin[0] + iv[0] * cs;
v[1] = bmin[1] + iv[1] * cs;
v[2] = bmin[2] + iv[2] * cs;
}
//memcpy(navVerts, vertices, nverts*3*sizeof(float));
// Store polygons
const unsigned short* src = polys;
for (int i = 0; i < npolys; ++i)
{
dtStatPoly* p = &navPolys[i];
p->nv = 0;
for (int j = 0; j < vertsPerPoly; ++j)
{
if (src[j] == 0xffff) break;
p->v[j] = src[j];
p->n[j] = src[vertsPerPoly+j]+1;
p->nv++;
}
src += vertsPerPoly*2;
}
header->nnodes = createBVTree(vertsi, nverts, polys, npolys, vertsPerPoly,
cs, cs, npolys*2, navNodes);
if (dmeshes==NULL)
{
//create fake detail meshes
for (int i = 0; i < npolys; ++i)
{
dtStatPolyDetail& dtl = navDMeshes[i];
dtl.vbase = 0;
dtl.nverts = 0;
dtl.tbase = i;
dtl.ntris = 1;
}
// setup triangles.
unsigned char* tri = navDTris;
for (size_t i=0; i<ndtris; i++)
{
for (size_t j=0; j<3; j++)
tri[4*i+j] = j;
}
}
else
{
//verts
memcpy(navDVerts, dvertices, ndvertsuniq*3*sizeof(float));
//tris
unsigned char* tri = navDTris;
for (size_t i=0; i<ndtris; i++)
{
for (size_t j=0; j<3; j++)
tri[4*i+j] = dtris[6*i+j];
}
//detailed meshes
for (int i = 0; i < npolys; ++i)
{
dtStatPolyDetail& dtl = navDMeshes[i];
dtl.vbase = dmeshes[i*4+0];
dtl.nverts = dmeshes[i*4+1];
dtl.tbase = dmeshes[i*4+2];
dtl.ntris = dmeshes[i*4+3];
}
}
m_navMesh = new dtStatNavMesh;
m_navMesh->init(data, dataSize, true);
delete [] vertices;
/* navmesh conversion is using C guarded alloc for memory allocaitons */
MEM_freeN(polys);
if (dmeshes) MEM_freeN(dmeshes);
if (dtris) MEM_freeN(dtris);
if (dvertices)
delete [] dvertices;
if (vertsi)
delete [] vertsi;
return true;
}
