squash shader

squash.shader

shader_type canvas_item; 

render_mode blend_mix; 

uniform float squash_power = 0.0; 
uniform float squash_position = 0.0; 

void fragment() { 
	vec2 uv = SCREEN_UV; 
	float PI = 3.14159; 
	float squash = cos((uv.y + (squash_position)) * PI * 2.0 + PI * 0.5) * squash_power; 
	uv.x = uv.x * (1.0 - squash) + .5 * squash; 
	
	COLOR = texture(SCREEN_TEXTURE, uv); 
	
}