29 lines
827 B
GLSL
Executable File
29 lines
827 B
GLSL
Executable File
//SHADER ORIGINALY CREADED BY "jcant0n" FROM SHADERTOY
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//MODIFIED AND PORTED TO GODOT BY AHOPNESS (@ahopness)
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//LICENSE : CC0
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//COMATIBLE WITH : GLES2, GLES3, WEBGL
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//SHADERTOY LINK : https://www.shadertoy.com/view/4sSSzz
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shader_type canvas_item;
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uniform float strength :hint_range(-0.035, 0.035) = 0.0;
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void fragment(){
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vec2 Resolution = 1.0 / SCREEN_PIXEL_SIZE;
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vec2 uv = FRAGCOORD.xy / Resolution.xy;
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float aspectRatio = Resolution.x / Resolution.y;
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vec2 intensity = vec2(strength * aspectRatio);
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vec2 coords = uv;
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coords = (coords - 0.5) * 2.0;
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vec2 realCoordOffs;
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realCoordOffs.x = (1.0 - coords.y * coords.y) * intensity.y * (coords.x);
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realCoordOffs.y = (1.0 - coords.x * coords.x) * intensity.x * (coords.y);
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vec4 color = texture(SCREEN_TEXTURE, uv - realCoordOffs);
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COLOR = vec4(color);
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} |