OpenSpace/modules/fieldlines/shaders/fieldline_fs.glsl

/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014                                                                    *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
 * software and associated documentation files (the "Software"), to deal in the Software *
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 * or substantial portions of the Software.                                              *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
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in vec4 gs_color;
in vec4 gs_position;
in vec3 gs_normal;

uniform bool classification;
uniform vec4 fieldLineColor;



#include "fragment.glsl"
#include "PowerScaling/powerScaling_fs.hglsl"


Fragment getFragment()
{
    float alpha = 1-length(gs_normal)*length(gs_normal);
    vec4 fragColor;
    if (classification)
        fragColor = vec4(gs_color.rgb * alpha, 1.0);
    else
        fragColor = vec4(fieldLineColor.rgb * fieldLineColor.a * alpha, 1.0);

    float depth = pscDepth(gs_position);

    Fragment frag;
    frag.depth = depth;
    frag.color = fragColor;
    return frag;
}



// #include "ABuffer/abufferStruct.hglsl"
// #include "ABuffer/abufferAddToBuffer.hglsl"
// #include "PowerScaling/powerScaling_fs.hglsl"

// void main() {
//     float alpha = 1-length(gs_normal)*length(gs_normal);
//     vec4 fragColor;
//     if (classification)
//         fragColor = vec4(gs_color.rgb, alpha);
//     else
//         fragColor = vec4(fieldLineColor.rgb, fieldLineColor.a * alpha);

//     float depth = pscDepth(gs_position);
//     ABufferStruct_t frag = createGeometryFragment(fragColor, gs_position, depth);
//     addToBuffer(frag);
// }