[FLEET] anti corner dvd remake idea

@doi
https://meliplug.info/dvd.html

godot으로
Art-Michel/Flowerwall-CRT-shader-for-Godot + Simple CRT Bulge

@doi

shader_type canvas_item;  
uniform float intensity: hint_range(-1.0, 1.0, 0.001) = 0.065;  
uniform sampler2D ST : hint_screen_texture, filter_nearest;  
  
void fragment() {  
    float map = distance(SCREEN_UV, vec2(0.5));  
    COLOR = texture(ST, vec2(  
        SCREEN_UV.x - (map - 0.5) * intensity * (0.5 - SCREEN_UV.x),  
        SCREEN_UV.y - (map - 0.5) * intensity * (0.5 - SCREEN_UV.y))  
    );  
}