NanoRT_Geom.h

// ======================================================================== //
// Copyright 2009-2015 Intel Corporation                                    //
//                                                                          //
// Licensed under the Apache License, Version 2.0 (the "License");          //
// you may not use this file except in compliance with the License.         //
// You may obtain a copy of the License at                                  //
//                                                                          //
//     http://www.apache.org/licenses/LICENSE-2.0                           //
//                                                                          //
// Unless required by applicable law or agreed to in writing, software      //
// distributed under the License is distributed on an "AS IS" BASIS,        //
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
// See the License for the specific language governing permissions and      //
// limitations under the License.                                           //
// ======================================================================== //

#pragma once

#ifdef USE_CPP_INTERFACE
# include "../cpp_renderer/geometry/Geometry.h"
#else
# include "geometry/Geometry.h"
#endif
#include "ospray/common/Data.h"

#include "nanort.h"

#include <memory>

namespace ospray {

  struct NanoRT : public Geometry
  {
    NanoRT();
    std::string toString() const override;
    void finalize(Model *model) override;

    size_t numTris{-1};
    size_t idxSize{0};
    size_t vtxSize{0};
    size_t norSize{0};

    const int    *index;  //!< mesh's triangle index array
    const float  *vertex; //!< mesh's vertex array
    const float  *normal; //!< mesh's vertex normal array
    const vec4f  *color;  //!< mesh's vertex color array
    const vec2f  *texcoord; //!< mesh's vertex texcoord array
    const uint32 *prim_materialID; //!< per-primitive material ID
    Material **materialList; //!< per-primitive material list
    int geom_materialID;

    Ref<Data> indexData;  /*!< triangle indices (A,B,C,materialID) */
    Ref<Data> vertexData; /*!< vertex position (vec3fa) */
    Ref<Data> normalData; /*!< vertex normal array (vec3fa) */
    Ref<Data> colorData;  /*!< vertex color array (vec3fa) */
    Ref<Data> texcoordData; /*!< vertex texcoord array (vec2f) */
    Ref<Data> prim_materialIDData;  /*!< data array for per-prim material ID (uint32) */
    Ref<Data> materialListData; /*!< data array for per-prim materials */
    uint32    eMesh;   /*!< embree triangle mesh handle */

    void** ispcMaterialPtrs; /*!< pointers to ISPC equivalent materials */

    // NanoRT stuff //

    std::unique_ptr<unsigned int> uindex;

    std::unique_ptr<nanort::TriangleMesh<float>> triangle_mesh;
    nanort::BVHAccel<float,
                     nanort::TriangleMesh<float>,
                     nanort::TriangleSAHPred<float>,
                     nanort::TriangleIntersector<>> accel;
  };

} // ::ospray