eic-opticks/sysrap/SCUDA_MeshGroup.h

0001 #pragma once
0002
0003 /**
0004 SCUDA_MeshGroup.h : collect vectors of NP from each SMeshGroup sub, upload together with SCU_BufferView
0005 =========================================================================================================
0006
0007 Try following the pattern of SGLFW_Mesh.h
0008
0009 **/
0010
0011 #include "SMeshGroup.h"
0012 #include "SCU_BufferView.h"
0013
0014 struct SCUDA_MeshGroup
0015 {
0016     static SCUDA_MeshGroup* Upload( const SMeshGroup* mg );
0017
0018     static constexpr const int INST_ELEM = 4*4 ;
0019
0020     std::vector<const NP*> _vtx ;
0021     std::vector<const NP*> _nrm ;
0022     std::vector<const NP*> _idx ;
0023
0024     SCU_BufferView<float> vtx = {} ;
0025     SCU_BufferView<float> nrm = {} ;
0026     SCU_BufferView<int>   idx = {} ;
0027
0028     size_t num_part() const ;
0029     void free();
0030     std::string desc() const ;
0031
0032     SCUDA_MeshGroup(const SMeshGroup* mg ) ;
0033 };
0034
0035 inline SCUDA_MeshGroup* SCUDA_MeshGroup::Upload( const SMeshGroup* mg ) // static
0036 {
0037     return new SCUDA_MeshGroup(mg);
0038 }
0039
0040 inline size_t SCUDA_MeshGroup::num_part() const
0041 {
0042     return vtx.num_part();
0043 }
0044
0045 inline void SCUDA_MeshGroup::free()
0046 {
0047     vtx.free();
0048     nrm.free();
0049     idx.free();
0050 }
0051
0052 inline std::string SCUDA_MeshGroup::desc() const
0053 {
0054     std::stringstream ss ;
0055     ss << "[SCUDA_MeshGroup::desc\n" ;
0056     ss << vtx.desc() ;
0057     ss << nrm.desc() ;
0058     ss << idx.desc() ;
0059     ss << "]SCUDA_MeshGroup::desc\n" ;
0060     std::string str = ss.str();
0061     return str ;
0062 }
0063
0064
0065 inline SCUDA_MeshGroup::SCUDA_MeshGroup(const SMeshGroup* mg )
0066 {
0067     int num_sub = mg->subs.size() ;
0068     for(int i=0 ; i < num_sub ; i++)
0069     {
0070         const SMesh* m = mg->subs[i] ;
0071         _vtx.push_back(m->vtx);
0072         _nrm.push_back(m->nrm);
0073         _idx.push_back(m->tri);
0074     }
0075
0076     vtx.upload(_vtx);
0077     nrm.upload(_nrm);
0078     idx.upload(_idx);
0079     //std::cout << "SCUDA_MeshGroup::SCUDA_MeshGroup\n" << desc() ;
0080 }
0081
0082