18 lines
530 B
Plaintext
18 lines
530 B
Plaintext
shader_type canvas_item;
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uniform float glow_interval : hint_range(0.0, 1.0, 0.00001) = 1.0;
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uniform float glow_radius : hint_range(0.0, 1.0, 0.00001) = 1.0;
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uniform float travel_time : hint_range(0.0, 100.0, 1) = 5.0;
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float get_alpha(vec2 uv, float offset) {
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float progress = fract(mod(TIME, travel_time)/travel_time + offset);
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return step(distance(progress, uv.x), glow_radius);
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}
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void fragment() {
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COLOR.a = 0.0;
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for (float offset = 0.0; offset <= 1.0; offset += glow_interval) {
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COLOR.a += get_alpha(UV, offset);
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}
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}
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