18 lines
472 B
GLSL
18 lines
472 B
GLSL
#version 330 core
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// Colors the trail geometry by age: newest samples are red and old samples
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// fade toward brown before they expire from the CPU-side trail window.
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out vec4 FragColor;
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in float TrailTimestamp;
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uniform float currentTime;
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uniform float maxAge;
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uniform vec3 recentColor;
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uniform vec3 oldColor;
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void main()
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{
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float ageRatio = clamp((currentTime - TrailTimestamp) / maxAge, 0.0, 1.0);
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FragColor = vec4(mix(recentColor, oldColor, ageRatio), 1.0);
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}
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