OpenSpace/modules/galaxy/shaders/points.fs

/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2016                                                               *
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uniform float emittanceFactor;

in vec3 vsPosition;
in vec3 vsColor;

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

Fragment getFragment() {
    vec4 color = vec4(vsColor, 1.0);
    
    Fragment frag;
    float depth = pscDepth(vec4(vsPosition, 0.0));

    float coefficient = exp(1.38 * log(emittanceFactor) - 2*log(depth));

    frag.color = vec4(vsColor.rgb * coefficient, 1.0);

    
    frag.depth = depth;

    return frag;
}