xbl.h

/*
 * Fermat
 *
 * Copyright (c) 2016-2019, 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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 */

#pragma once

#include "framebuffer.h"
#include "filters.h"
#include "tiled_sequence.h"



struct XBLParams
{
    float   phi_normal;
    float   phi_position;   // must take into account the scene size
    float   phi_color;      // must take into account the maximum intensity
    uint32  taps;           // number of stochastic taps

    cugar::Vector3f E;
    cugar::Vector3f U;
    cugar::Vector3f V;
    cugar::Vector3f W;
};

void XBL(
    FBufferChannelView          dst,
    const FilterOp              op,
    const FBufferChannelView    w_img,
    const float                 w_min,
    const FBufferChannelView    img,
    const GBufferView           gb,
    const float*                var,
    const XBLParams             params,
    const uint32                filter_radius,
    const uint32                step_size,
    const TiledSequenceView     sequence);