direct_lighting_mesh.h

/*
 * Fermat
 *
 * Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *    * Neither the name of the NVIDIA CORPORATION nor the
 *      names of its contributors may be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include <lights.h>



struct DirectLightingMesh
{
    static const uint32 INVALID_SLOT    = 0xFFFFFFFF;
    static const uint32 INVALID_SAMPLE  = 0xFFFFFFFF;

    FERMAT_HOST_DEVICE
    DirectLightingMesh() {}

    FERMAT_HOST_DEVICE
    DirectLightingMesh(const MeshLight _mesh_light) : mesh_light(_mesh_light) {}

    FERMAT_DEVICE
    uint32 preprocess_vertex(
        const RenderingContextView& renderer,
        const EyeVertex&    ev,
        const uint32        pixel,
        const uint32        bounce,
        const bool          is_secondary_diffuse,
        const float         cone_radius,
        const cugar::Bbox3f scene_bbox)
    {
        return INVALID_SLOT;
    }

    FERMAT_DEVICE
    uint32 sample(
        const uint32        nee_slot,
        const float         z[3],
        VertexGeometryId*   light_vertex,
        VertexGeometry*     light_vertex_geom,
        float*              light_pdf,
        Edf*                light_edf)
    {
        mesh_light.sample(z, &light_vertex->prim_id, &light_vertex->uv, light_vertex_geom, light_pdf, light_edf);
        return INVALID_SAMPLE;
    }

    FERMAT_DEVICE
    void map(
        const uint32            prev_nee_slot,
        const uint32            triId,
        const cugar::Vector2f   uv,
        const VertexGeometry    light_vertex_geom,
        float*                  light_pdf,
        Edf*                    light_edf)
    {
        mesh_light.map(triId, uv, light_vertex_geom, light_pdf, light_edf);
    }

    FERMAT_DEVICE
    void update(
        const uint32            nee_slot,
        const uint32            nee_sample,
        const cugar::Vector3f   w,
        const bool              occluded)
    {}

    MeshLight   mesh_light;
};