OpenSubdiv/opensubdiv/osd/mesh.cpp

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#include <string.h>

#include "../version.h"
#include "../osd/mesh.h"
#include "../osd/local.h"
#include "../osd/dump.cpp"
#include "../osd/kernelDispatcher.h"
#include "../osd/cpuDispatcher.h"

#include "../far/meshFactory.h"

namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {

OsdMesh::OsdMesh()
    : _mMesh(NULL), _dispatcher(NULL) {
    
}

OsdMesh::~OsdMesh() {

    if(_dispatcher) delete _dispatcher;
    if(_mMesh) delete _mMesh;

}

bool
OsdMesh::Create(OsdHbrMesh *hbrMesh, int level, const std::string &kernel) {

    if (_dispatcher)
        delete _dispatcher;
    _dispatcher = OsdKernelDispatcher::CreateKernelDispatcher(kernel, level);
    if(_dispatcher == NULL){
        OSD_ERROR("Unknown kernel %s\n", kernel.c_str());
        return false;
    }

    _level = level;
        
    // create Far mesh
    OSD_DEBUG("Create MeshFactory\n");

    FarMeshFactory<OsdVertex> meshFactory(hbrMesh, _level);

    _mMesh = meshFactory.Create(_dispatcher);
    
    OSD_DEBUG("PREP: NumCoarseVertex = %d\n", _mMesh->GetNumCoarseVertices());
    OSD_DEBUG("PREP: NumVertex = %d\n", _mMesh->GetNumVertices());

    const FarSubdivisionTables<OsdVertex>* table = _mMesh->GetSubdivision();

    _dispatcher->UpdateTable(OsdKernelDispatcher::E_IT, table->Get_E_IT());
    _dispatcher->UpdateTable(OsdKernelDispatcher::V_IT, table->Get_V_IT());
    _dispatcher->UpdateTable(OsdKernelDispatcher::V_ITa, table->Get_V_ITa());
    _dispatcher->UpdateTable(OsdKernelDispatcher::E_W, table->Get_E_W());
    _dispatcher->UpdateTable(OsdKernelDispatcher::V_W, table->Get_V_W());

    if ( const FarCatmarkSubdivisionTables<OsdVertex> * cctable = 
       dynamic_cast<const FarCatmarkSubdivisionTables<OsdVertex>*>(table) ) {
        // catmark
        _dispatcher->UpdateTable(OsdKernelDispatcher::F_IT, cctable->Get_F_IT());
        _dispatcher->UpdateTable(OsdKernelDispatcher::F_ITa, cctable->Get_F_ITa());
    } else if ( const FarBilinearSubdivisionTables<OsdVertex> * btable = 
       dynamic_cast<const FarBilinearSubdivisionTables<OsdVertex>*>(table) ) {
        // bilinear
        _dispatcher->UpdateTable(OsdKernelDispatcher::F_IT, btable->Get_F_IT());
        _dispatcher->UpdateTable(OsdKernelDispatcher::F_ITa, btable->Get_F_ITa());
    } else {
        // XXX for glsl shader...
        _dispatcher->CopyTable(OsdKernelDispatcher::F_IT, 0, NULL);
        _dispatcher->CopyTable(OsdKernelDispatcher::F_ITa, 0, NULL);
    }

    CHECK_GL_ERROR("Mesh, update tables\n");

    return true;
}

OsdVertexBuffer *
OsdMesh::InitializeVertexBuffer(int numElements)
{
    if (!_dispatcher) return NULL;
    return _dispatcher->InitializeVertexBuffer(numElements, GetTotalVertices());
}

void
OsdMesh::Subdivide(OsdVertexBuffer *vertex, OsdVertexBuffer *varying) {

    _dispatcher->BindVertexBuffer(vertex, varying);

    _dispatcher->OnKernelLaunch();

    _mMesh->Subdivide(_level+1);

    _dispatcher->OnKernelFinish();

    _dispatcher->UnbindVertexBuffer();
}

void
OsdMesh::Synchronize() {

    _dispatcher->Synchronize();
}

} // end namespace OPENSUBDIV_VERSION
} // end namespace OpenSubdiv