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25 lines
553 B
Plaintext
25 lines
553 B
Plaintext
shader_type canvas_item;
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uniform vec4 in_color:source_color;
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uniform float position:hint_range(-2,1.) = 0.856;
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uniform vec2 size = vec2(32., 32.);
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uniform vec2 screen_size = vec2(640., 360.);
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void fragment(){
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vec2 a = screen_size / size;
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vec2 uv=UV*a;
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vec2 i_uv = floor(uv);
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vec2 f_uv = fract(uv);
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float rate = (i_uv.x+i_uv.y)/(a.x+a.y) - position;
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rate = pow(rate,3);
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float wave = max(0.,rate);
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vec2 center = f_uv*2.-1.;
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float circle = abs(center.x)+abs(center.y);
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circle = 1. - step(wave,circle);
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COLOR=vec4(circle) * in_color;
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}
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