shader_type spatial;
render_mode blend_add,unshaded,depth_test_disabled,cull_disabled;

uniform sampler2D tex_main : source_color;
uniform sampler2D tex_noise : source_color;
uniform sampler2D tex_mask : source_color;
uniform sampler2D tex_gradient : source_color;
uniform sampler2D screenTexture : hint_screen_texture;

void fragment() {
	vec4 col_main = texture(tex_main, UV);
	vec4 col_noise = texture(tex_noise, UV + 0.5 * vec2(0, mod(TIME * 5.0, 2.0) - 1.0));
	vec4 col_mask = texture(tex_mask, UV);
	vec4 col = (col_noise + col_main) * col_mask;
	col = texture(tex_gradient, vec2(clamp(col.r,0.0,1.0),0.5));

	ALBEDO = col.rgb;
	ALPHA = col_noise.r * col_mask.r * COLOR.a;
}