[gd_resource type="ShaderMaterial" load_steps=3 format=3 uid="uid://bv06fr71bp0mr"]

[sub_resource type="Shader" id="Shader_n7650"]
code = "shader_type canvas_item;
render_mode world_vertex_coords;

uniform float foamHeight = 0.2;
uniform float speed = 1.0;
uniform sampler2D foamTex;
uniform float amplitude = 0.2;
uniform float frequency = 1.0;
uniform int waveCount = 5;
uniform float amplitudeScaleFactor = 0.82;
uniform float frequencyScaleFactor = 1.18;
uniform float dirs[40];
uniform sampler2D tex;

varying float yOffset;

float calcHeight(float x, float y){
	float amp = 1.0;
	float freq = 1.0;
	float offset = 0.0;
	for (int i = 0; i < waveCount; i++){
		offset += amplitude * amp * pow(E, sin(frequency * freq * (speed * TIME + (dirs[2 * i] * x) + (dirs[2 * i + 1] * y))));
		amp *= amplitudeScaleFactor;
		freq *= frequencyScaleFactor;
	}
	return offset;
}

void vertex() {
	yOffset = VERTEX.y;
	VERTEX.y += calcHeight(VERTEX.x, VERTEX.y);
	yOffset += VERTEX.y;
}

void fragment() {
	COLOR = vec4(1.0, 1.0, 1.0, 0.5);
}
"

[sub_resource type="CanvasTexture" id="CanvasTexture_n7650"]

[resource]
resource_local_to_scene = true
shader = SubResource("Shader_n7650")
shader_parameter/foamHeight = 0.2
shader_parameter/speed = 1.0
shader_parameter/amplitude = 0.2
shader_parameter/frequency = 1.0
shader_parameter/waveCount = 5
shader_parameter/amplitudeScaleFactor = 0.82
shader_parameter/frequencyScaleFactor = 1.18
shader_parameter/dirs = PackedFloat32Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
shader_parameter/tex = SubResource("CanvasTexture_n7650")