Frosty Rotative Deformation

This shader has to be applied directly on a sprite or colorrect. It uses a noise texture to perform a deformation of the texture.

The uniform **noise** must be a noise texture, set as a normal map and with precise value (see screenshot down below).

Shader code

shader_type canvas_item;

uniform sampler2D noise;

void fragment() {
	float angle = TIME;
	vec2 dist = vec2(.5) - UV;
	float s = sin(angle);
	float c = cos(angle);
	mat2 m = mat2(vec2(c, -s), vec2(s, c));
	dist *= m;
	vec4 coord = texture(noise, dist);
	coord.x -= .5;
	coord.y -= .5;
	vec4 lens_color = texture(TEXTURE, UV + coord.xy);
    COLOR = lens_color;
}

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