Godot Sprite with Parallax Shader

parallax-sprite.shader

shader_type canvas_item;
//render_mode unshaded;

uniform float upScale = 1.0f;
uniform float bottomScale = 1.5f;
uniform float clampY = 0.0f;
uniform float expFactor = 0.0f;

void fragment(){
    
	float height = UV.y;
	float heightClamped = clamp((height - clampY) / (1.0 - clampY), 0., 1.0);
	float heightFactor = mix(upScale, bottomScale, heightClamped);
	
	float textureOffsetXNorm = (UV.x - 0.5) * 2.;  // from texture center better :?
	
	float screenOffsetXNorm = ((SCREEN_UV.x - 0.5) * 2.);
	float screenOffsetXNormParallax = screenOffsetXNorm * heightFactor;
	float offsetX = screenOffsetXNorm - screenOffsetXNormParallax;
	
	offsetX = offsetX * exp(heightFactor * expFactor);
	
	vec4 color = texture(TEXTURE, vec2(mod(UV.x + offsetX, 1.0), UV.y));

	COLOR = color;

}