mirror of
https://github.com/marinho/godot-visual-effects.git
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22 lines
756 B
Plaintext
22 lines
756 B
Plaintext
shader_type canvas_item;
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// based on https://www.youtube.com/watch?v=aVzY6n3e19A
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uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear;
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uniform float strength = 20.0;
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uniform float focus_radius : hint_range(0.0, 1.0) = 0.0;
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uniform float focus_edge : hint_range(0.0, 1.0) = 0.0;
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void fragment() {
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vec2 CENTER = vec2(0.5, 0.5);
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float d = distance(SCREEN_UV, CENTER);
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float within_radius = smoothstep(focus_radius, focus_radius + focus_edge, d);
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vec2 offset = vec2(strength * within_radius, 0.0) * SCREEN_PIXEL_SIZE;
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float red = texture(SCREEN_TEXTURE, SCREEN_UV - offset).r;
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float green = texture(SCREEN_TEXTURE, SCREEN_UV).g;
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float blue = texture(SCREEN_TEXTURE, SCREEN_UV + offset).b;
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COLOR = vec4(red, green, blue, 1.0);
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}
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