25 lines
705 B
Plaintext
25 lines
705 B
Plaintext
shader_type canvas_item;
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uniform vec4 orb_color : source_color = vec4(0.2, 1.0, 0.5, 1.0); // base orb color
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uniform float glow_strength : hint_range(0.0, 2.0) = 1.2;
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uniform float pulse_speed : hint_range(0.0, 10.0) = 2.0;
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void fragment() {
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// Centered UV (0,0 in middle, -1..1 range)
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vec2 uv = (UV - vec2(0.5)) * 2.0;
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float dist = length(uv);
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// Soft circular mask
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float circle = smoothstep(0.8, 0.0, dist);
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// Glow falloff
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float glow = smoothstep(0.5, 0.0, dist) * glow_strength;
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// Pulsing
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float pulse = 0.5 + 0.5 * sin(TIME * pulse_speed);
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vec3 color = orb_color.rgb * (circle + glow * pulse);
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COLOR = vec4(color, circle); // alpha fades at edges
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}
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