//------------------------------------------------------------------------------
static int
checkMeshCPU( OpenSubdiv::FarMesh<OpenSubdiv::OsdVertex>* farmesh,
const std::vector<float>& coarseverts,
xyzmesh * refmesh,
const std::vector<int>& remap) {
static OpenSubdiv::OsdCpuComputeController *controller = new OpenSubdiv::OsdCpuComputeController();
OpenSubdiv::OsdCpuComputeContext *context = OpenSubdiv::OsdCpuComputeContext::Create(farmesh->GetSubdivisionTables(), farmesh->GetVertexEditTables());
OpenSubdiv::OsdCpuVertexBuffer * vb = OpenSubdiv::OsdCpuVertexBuffer::Create(3, farmesh->GetNumVertices());
vb->UpdateData( & coarseverts[0], 0, (int)coarseverts.size()/3 );
controller->Refine( context, farmesh->GetKernelBatches(), vb );
return checkVertexBuffer(refmesh, vb->BindCpuBuffer(), vb->GetNumElements(), remap);
}
void
OsdMeshData::updateGeometry(const MHWRender::MVertexBuffer *points, const MHWRender::MVertexBuffer *normals)
{
// Update coarse vertex
if (!_positionBuffer) return;
if (!_normalBuffer) return;
int nCoarsePoints = _pointArray.length();
OpenSubdiv::OsdCpuVertexBuffer *cpuPos = dynamic_cast<OpenSubdiv::OsdCpuVertexBuffer*>(_positionBuffer);
OpenSubdiv::OsdCpuVertexBuffer *cpuNormal = dynamic_cast<OpenSubdiv::OsdCpuVertexBuffer*>(_normalBuffer);
if (cpuPos) {
// I know, this is very inefficient...
float *d_pos = cpuPos->GetCpuBuffer();
float *d_normal = cpuNormal->GetCpuBuffer();
glBindBuffer(GL_ARRAY_BUFFER, *(GLuint*)points->resourceHandle());
glGetBufferSubData(GL_ARRAY_BUFFER, 0, nCoarsePoints*3*sizeof(float), d_pos);
glBindBuffer(GL_ARRAY_BUFFER, *(GLuint*)normals->resourceHandle());
glGetBufferSubData(GL_ARRAY_BUFFER, 0, nCoarsePoints*3*sizeof(float), d_normal);
glBindBuffer(GL_ARRAY_BUFFER, 0);
} else {
glBindBuffer(GL_COPY_READ_BUFFER, *(GLuint*)points->resourceHandle());
glBindBuffer(GL_COPY_WRITE_BUFFER, _positionBuffer->GetGpuBuffer());
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, 0, 0, nCoarsePoints*3*sizeof(float));
glBindBuffer(GL_COPY_READ_BUFFER, *(GLuint*)normals->resourceHandle());
glBindBuffer(GL_COPY_WRITE_BUFFER, _normalBuffer->GetGpuBuffer());
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, 0, 0, nCoarsePoints*3*sizeof(float));
glBindBuffer(GL_COPY_READ_BUFFER, 0);
glBindBuffer(GL_COPY_WRITE_BUFFER, 0);
}
_osdmesh->Subdivide(_positionBuffer, NULL);
_osdmesh->Subdivide(_normalBuffer, NULL);
_needsUpdate = false;
}
//------------------------------------------------------------------------------
int checkMesh( char const * msg, char const * shape, int levels, Scheme scheme=kCatmark ) {
int result =0;
printf("- %s (scheme=%d)\n", msg, scheme);
xyzmesh * refmesh = simpleHbr<xyzVV>(shape, scheme, 0);
refine( refmesh, levels );
std::vector<float> coarseverts;
OpenSubdiv::OsdHbrMesh * hmesh = simpleHbr<OpenSubdiv::OsdVertex>(shape, scheme, coarseverts);
OpenSubdiv::OsdMesh * omesh = new OpenSubdiv::OsdMesh();
std::vector<int> remap;
{
omesh->Create(hmesh, levels, (int)OpenSubdiv::OsdKernelDispatcher::kCPU, /* exact= */ 0, &remap);
OpenSubdiv::OsdCpuVertexBuffer * vb =
dynamic_cast<OpenSubdiv::OsdCpuVertexBuffer *>(omesh->InitializeVertexBuffer(3));
vb->UpdateData( & coarseverts[0], (int)coarseverts.size()/3 );
omesh->Subdivide( vb, NULL );
omesh->Synchronize();
checkVertexBuffer(refmesh, vb, remap);
}
delete hmesh;
return result;
}
// ====================================
// Compute
// ====================================
//
// Description:
// This method computes the value of the given output plug based
// on the values of the input attributes.
//
// Arguments:
// plug - the plug to compute
// data - object that provides access to the attributes for this node
//
MStatus OsdPolySmooth::compute( const MPlug& plug, MDataBlock& data ) {
MStatus returnStatus;
// Check which output attribute we have been asked to compute. If this
// node doesn't know how to compute it, we must return
// MS::kUnknownParameter.
//
if( plug == a_output ) {
bool createdSubdMesh = false;
int subdivisionLevel = data.inputValue(a_subdivisionLevels).asInt();
short stateH = data.inputValue(state).asShort();
if ((subdivisionLevel > 0) and (stateH !=1)) {
// == Retrieve input mesh ====================================
// Get attr values
MObject inMeshObj = data.inputValue(a_inputPolymesh).asMesh();
short vertBoundaryMethod = data.inputValue(a_vertBoundaryMethod).asShort();
short fvarBoundaryMethod = data.inputValue(a_fvarBoundaryMethod).asShort();
bool fvarPropCorners = data.inputValue(a_fvarPropagateCorners).asBool();
bool smoothTriangles = data.inputValue(a_smoothTriangles).asBool();
short creaseMethodVal = data.inputValue(a_creaseMethod).asShort();
// Convert attr values to OSD enums
HMesh::InterpolateBoundaryMethod vertInterpBoundaryMethod =
ConvertMayaBoundaryMethodShortToOsdInterpolateBoundaryMethod(vertBoundaryMethod);
HMesh::InterpolateBoundaryMethod fvarInterpBoundaryMethod =
ConvertMayaBoundaryMethodShortToOsdInterpolateBoundaryMethod(fvarBoundaryMethod);
HCatmark::CreaseSubdivision creaseMethod =
(creaseMethodVal == k_creaseMethod_chaikin) ?
HCatmark::k_CreaseChaikin : HCatmark::k_CreaseNormal;
HCatmark::TriangleSubdivision triangleSubdivision =
smoothTriangles ? HCatmark::k_New : HCatmark::k_Normal;
// == Get Mesh Functions and Iterators ==========================
MFnMeshData inMeshDat(inMeshObj);
MFnMesh inMeshFn(inMeshObj, &returnStatus);
MCHECKERR(returnStatus, "ERROR getting inMeshFn\n");
MItMeshPolygon inMeshItPolygon(inMeshObj, &returnStatus);
MCHECKERR(returnStatus, "ERROR getting inMeshItPolygon\n");
// == Convert MFnMesh to OpenSubdiv =============================
// Create the hbrMesh
// Note: These fvar values only need to be kept alive through the life of the farMesh
std::vector<int> fvarIndices;
std::vector<int> fvarWidths;
HMesh *hbrMesh = createOsdHbrFromPoly(
inMeshFn, inMeshItPolygon, fvarIndices, fvarWidths);
assert(hbrMesh);
// Create the farMesh if successfully created the hbrMesh
if (hbrMesh) {
// Set Boundary methods and other hbr paramters
hbrMesh->SetInterpolateBoundaryMethod( vertInterpBoundaryMethod );
hbrMesh->SetFVarInterpolateBoundaryMethod( fvarInterpBoundaryMethod );
hbrMesh->SetFVarPropagateCorners(fvarPropCorners);
hbrMesh->GetSubdivision()->SetCreaseSubdivisionMethod(creaseMethod);
// Set HBR Catmark Subdivision parameters
HCatmark *catmarkSubdivision = dynamic_cast<HCatmark *>(hbrMesh->GetSubdivision());
if (catmarkSubdivision) {
catmarkSubdivision->SetTriangleSubdivisionMethod(triangleSubdivision);
}
// Finalize subd calculations -- apply boundary interpolation rules and resolves singular verts, etc.
// NOTE: This HAS to be called after all HBR parameters are set
hbrMesh->Finish();
int ncoarseverts = hbrMesh->GetNumVertices();
// Create a FarMesh from the HBR mesh and pass into
// It will be owned by the OsdMesh and deleted in the ~OsdMesh()
FMeshFactory meshFactory(hbrMesh, subdivisionLevel, false);
FMesh *farMesh = meshFactory.Create((hbrMesh->GetTotalFVarWidth() > 0));
// == Setup OSD Data Structures =========================
int numVertexElements = 3; // only track vertex positions
int numVaryingElements = 0; // XXX Future: Revise to include varying ColorSets
int numVertices = inMeshFn.numVertices();
int numFarVerts = farMesh->GetNumVertices();
static OpenSubdiv::OsdCpuComputeController computeController = OpenSubdiv::OsdCpuComputeController();
OpenSubdiv::OsdCpuComputeController::ComputeContext *computeContext =
OpenSubdiv::OsdCpuComputeController::ComputeContext::Create(farMesh);
OpenSubdiv::OsdCpuVertexBuffer *vertexBuffer =
OpenSubdiv::OsdCpuVertexBuffer::Create(numVertexElements, numFarVerts );
OpenSubdiv::OsdCpuVertexBuffer *varyingBuffer =
(numVaryingElements) ? OpenSubdiv::OsdCpuVertexBuffer::Create(numVaryingElements, numFarVerts) : NULL;
// == UPDATE VERTICES (can be done after farMesh generated from topology) ==
float const * vertex3fArray = inMeshFn.getRawPoints(&returnStatus);
vertexBuffer->UpdateData(vertex3fArray, 0, numVertices );
// Hbr dupes singular vertices during Mesh::Finish() - we need
// to duplicate their positions in the vertex buffer.
if (ncoarseverts > numVertices) {
MIntArray polyverts;
for (int i=numVertices; i<ncoarseverts; ++i) {
HVertex const * v = hbrMesh->GetVertex(i);
HFace const * f = v->GetIncidentEdge()->GetFace();
int vidx = -1;
for (int j=0; j<f->GetNumVertices(); ++j) {
if (f->GetVertex(j)==v) {
vidx = j;
break;
}
}
assert(vidx>-1);
inMeshFn.getPolygonVertices(f->GetID(), polyverts);
int vert = polyverts[vidx];
vertexBuffer->UpdateData(&vertex3fArray[0]+vert*numVertexElements, i, 1);
}
}
// == Delete HBR
// Can now delete the hbrMesh as we will only be referencing the farMesh from this point on
delete hbrMesh;
hbrMesh = NULL;
// == Subdivide OpenSubdiv mesh ==========================
computeController.Refine(computeContext, farMesh->GetKernelBatches(), vertexBuffer, varyingBuffer);
computeController.Synchronize();
// == Convert subdivided OpenSubdiv mesh to MFnMesh Data outputMesh =============
// Create New Mesh Data Object
MFnMeshData newMeshData;
MObject newMeshDataObj = newMeshData.create(&returnStatus);
MCHECKERR(returnStatus, "ERROR creating outputData");
// Create out mesh
returnStatus = convertOsdFarToMayaMeshData(farMesh, vertexBuffer, subdivisionLevel, inMeshFn, newMeshDataObj);
MCHECKERR(returnStatus, "ERROR convertOsdFarToMayaMesh");
// Propagate objectGroups from inMesh to outMesh (for per-facet shading, etc)
returnStatus = createSmoothMesh_objectGroups(inMeshDat, subdivisionLevel, newMeshData );
// Write to output plug
MDataHandle outMeshH = data.outputValue(a_output, &returnStatus);
MCHECKERR(returnStatus, "ERROR getting polygon data handle\n");
outMeshH.set(newMeshDataObj);
// == Cleanup OSD ============================================
// REVISIT: Re-add these deletes
delete(vertexBuffer);
delete(varyingBuffer);
delete(computeContext);
delete(farMesh);
// note that the subd mesh was created (see the section below if !createdSubdMesh)
createdSubdMesh = true;
}
}
// Pass-through inMesh to outMesh if not created the subd mesh
if (!createdSubdMesh) {
MDataHandle outMeshH = data.outputValue(a_output, &returnStatus);
returnStatus = outMeshH.copy(data.outputValue(a_inputPolymesh, &returnStatus));
MCHECKERR(returnStatus, "ERROR getting polygon data handle\n");
}
// Clean up Maya Plugs
data.setClean(plug);
}
else {
// Unhandled parameter in this compute function, so return MS::kUnknownParameter
// so it is handled in a parent compute() function.
return MS::kUnknownParameter;
}
return MS::kSuccess;
}
