OpenSpace/modules/fieldlines/shaders/fieldline_fs.glsl

/*****************************************************************************************
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 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2022                                                               *
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#include "fragment.glsl"
#include "PowerScaling/powerScaling_fs.hglsl"

in vec4 gs_color;
in vec4 gs_position;
in vec3 gs_normal;

uniform bool classification;
uniform vec4 fieldLineColor;


Fragment getFragment() {
    float alpha = 1 - length(gs_normal) * length(gs_normal);

    Fragment frag;
    if (classification) {
        frag.color = vec4(gs_color.rgb * alpha, 1.0);
    }
    else {
        frag.color = vec4(fieldLineColor.rgb * fieldLineColor.a * alpha, 1.0);
    }

    frag.depth = pscDepth(gs_position);
        
    // G-Buffer
    frag.gPosition  = vec4(0.0);//vs_gPosition;
    // There is no normal here
    // TODO: Add the correct normal if necessary (JCC)
    frag.gNormal = vec4(0.0, 0.0, -1.0, 1.0);

    return frag;
}