28 lines
735 B
Plaintext
28 lines
735 B
Plaintext
shader_type canvas_item;
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#include "res://game/shaders/random_color.gdshaderinc"
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uniform float corruption_x = 0.0;
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uniform float edge_width = 50.0;
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uniform mat4 screen_to_world;
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uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_nearest_mipmap;
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void fragment() {
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vec4 screen_color = texture(SCREEN_TEXTURE, SCREEN_UV);
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float gray = dot(screen_color.rgb, vec3(0.299, 0.587, 0.114));
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vec3 bw = vec3(gray);
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vec4 world_pos = screen_to_world * vec4(FRAGCOORD.xy, 0.0, 1.0);
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float dist = world_pos.x - corruption_x;
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float t = smoothstep(-edge_width, edge_width, dist);
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COLOR.rgb = mix(bw, screen_color.rgb, t);
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COLOR.a = screen_color.a;
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float chance = (1.0 - t)/8.0;
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COLOR = random_color(COLOR, UV, chance);
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}
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