overte/libraries/render-utils/src/Haze.slh

<!
//  Haze.slh
//
//  Created by Nissim Hadar on 9/13/2017
//  Copyright 2013 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
!>
<@if not HAZE_SLH@>
<@def HAZE_SLH@>

const int HAZE_MODE_IS_ACTIVE = 1 << 0;
const int HAZE_MODE_IS_ALTITUDE_BASED = 1 << 1;
const int HAZE_MODE_IS_DIRECTIONAL_LIGHT_ATTENUATED = 1 << 2;
const int HAZE_MODE_IS_MODULATE_COLOR = 1 << 3;

struct HazeParams {
    vec3 hazeColor;
    float directionalLightBlend;

    vec3 directionalLightColor;
    float hazeBaseReference;

    vec3 colorModulationFactor;
    int hazeMode;

    float hazeRangeFactor;
    float hazeAltitudeFactor;

    float hazeRangeFactorKeyLight;
    float hazeAltitudeFactorKeyLight;

    float backgroundBlendValue;
};

layout(std140) uniform hazeBuffer {
    HazeParams hazeParams;
};

uniform sampler2D linearDepthMap;

<@endif@>