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Magical trail shader

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This may fail if your GPU isn't strong enough. My first fragment shader attempt! Move the mouse to create particles. Hold the middle mouse button to fade away particles. Press the right mouse button to display the underlying particle system.
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{{$t('general.eg',["mouse, keyboard"])}}
{{$t('general.eg',["visualization, fractal, mouse"])}}
{{$t('general.learnMoreAbout')}} Creative Commons
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