rt.h

/*
 * Fermat
 *
 * Copyright (c) 2018-2019, 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;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * 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 <types.h>
#include <ray.h>

#include <internal/optix_declarations.h>



enum ERayGenPrograms
{
    NULL_RAY_GEN                    = 0,
    TMIN_INTERSECTION_RAY_GEN       = 1,
    MASKED_INTERSECTION_RAY_GEN     = 2
};

struct RTContextImpl;

struct FERMAT_API RTContext
{
    RTContext();
    ~RTContext();

    void create_geometry(
        const uint32    triCount,
        const int*      index_ptr,
        const uint32    vertex_count,
        const float*    vertex_ptr,
        const int*      normal_index_ptr,
        const float*    normal_vertex_ptr,
        const int*      tex_index_ptr,
        const float*    tex_vertex_ptr,
        const int*      material_index_ptr);

    void bind_buffer(
        const char*     name,
        const uint32    size,
        const uint32    element_size,
        void*           ptr,
        const RTformat  format);

    void bind_var(
        const char*     name,
        const uint32    size,
        void*           ptr);

    template <typename T>
    void bind_var(const char* name, const T value) { bind_var(name, sizeof(T), (void*)&value); }

    void bind_var(const char* name, const int32 value);
    void bind_var(const char* name, const uint32 value);
    void bind_var(const char* name, const float value);

    uint32 create_program(
        const char*     filename,
        const char*     program_name);

    uint32 add_ray_generation_program(const uint32 program);

    void launch(const uint32 index, const uint32 width);
    void launch(const uint32 index, const uint32 width, const uint32 height);

    void trace(const uint32 count, const Ray* rays, Hit* hits);
    void trace(const uint32 count, const MaskedRay* rays, Hit* hits);
    void trace_shadow(const uint32 count, const MaskedRay* rays, Hit* hits);
    void trace_shadow(const uint32 count, const MaskedRay* rays, uint32* binary_hits);

    RTContextImpl* impl;
};

///@} Fermat