Amélioration de l'ambiance de Aqua

common/vfx/materials/shaders/caustics.gdshader

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+shader_type spatial;
+
+uniform float scale : hint_range(0.1, 2.0, 0.1) = 1.0;
+uniform float speed : hint_range(0.1, 2.0, 0.1) = 0.2;
+uniform float strenght : hint_range(10., 500., 10.) = 100.;
+uniform sampler2D color_ramp;
+varying vec3 world_position;
+
+vec2 random(vec2 uv) {
+	return vec2(fract(sin(dot(uv.xy,
+		vec2(12.9898,78.233))) * 43758.5453123));
+}
+
+float worley(vec2 uv, float columns, float rows) {
+	
+	vec2 index_uv = floor(vec2(uv.x * columns, uv.y * rows));
+	vec2 fract_uv = fract(vec2(uv.x * columns, uv.y * rows));
+	
+	float minimum_dist = 1.0;  
+	
+	for (int y= -1; y <= 1; y++) {
+		for (int x= -1; x <= 1; x++) {
+			vec2 neighbor = vec2(float(x),float(y));
+			vec2 point = random(index_uv + neighbor);
+			
+			vec2 diff = neighbor + point - fract_uv;
+			float dist = length(diff);
+			minimum_dist = min(minimum_dist, dist);
+		}
+	}
+	
+	return minimum_dist;
+}
+
+void vertex(){
+    world_position = (MODEL_MATRIX * vec4(VERTEX, 1.0)).xyz;
+}
+
+void fragment(){
+    float worley_value = worley(world_position.xz * scale + TIME * speed, 3.0, 3.0);
+    float worley_value_2 = worley(world_position.xz * scale * 2. - TIME * speed, 3.0, 3.0);
+    
+    float color = texture(color_ramp, vec2(worley_value*worley_value_2)).r;
+    color = min(0.99, color);
+    color = log(0.999)/log(color);
+    color *= strenght;
+    ALPHA = color;
+    EMISSION = vec3(color);
+}

common/vfx/materials/shaders/caustics.gdshader.uid

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+uid://740mg4jlufyc