shader_type spatial;
render_mode cull_front, depth_draw_never, blend_mix;

uniform vec3 surface_color : source_color = vec3(0.15, 0.45, 0.65);
uniform float wave_speed = 0.3;
uniform float wave_amplitude = 0.15;

void vertex() {
	float wave1 = sin(VERTEX.x * 0.5 + TIME * wave_speed) * wave_amplitude;
	float wave2 = cos(VERTEX.z * 0.4 + TIME * wave_speed * 1.3) * wave_amplitude * 0.7;
	VERTEX.y += wave1 + wave2;
}

void fragment() {
	ALBEDO = surface_color;
	float fresnel = pow(1.0 - dot(NORMAL, VIEW), 2.0);
	ALPHA = 0.4 + fresnel * 0.4;
	METALLIC = 0.2;
	ROUGHNESS = 0.3;
	EMISSION = surface_color * 0.1;
}