Fuck yes we got a good approximation of the effect working!

assets/examples/shaders/dissolve.wgsl

@@ -11,6 +11,7 @@
 
 struct MatExt {
 	step: u32,
+	// Cutoff (for animation)
 }
 
 @group(1) @binding(100)
@@ -24,7 +25,7 @@ fn random(st: vec2<f32>) -> f32 {
 
 fn noise(st: vec2<f32>) -> f32 {
 	var i = floor(st);
-	var f = floor(st);
+	var f = fract(st);
 
 	var a = random(i);
 	var b = random(i + vec2(1.0, 0.0));
@@ -36,22 +37,48 @@ fn noise(st: vec2<f32>) -> f32 {
 	return mix(a, b, u.x) + (c - a) * u.y * (1.0 - u.x) + (d - b) * u.x * u.y;
 }
 
+const octaves: i32 = 6;
+
+fn fbm(st: vec2<f32>) -> f32 {
+	var _st       = st;
+	var value     = 0.0;
+	var amplitude = 0.5;
+	var frequency = 0.0;
+
+	for (var i = 0 ; i < octaves; i++) {
+		value += amplitude * noise(_st);
+		_st *= 2.0;
+		amplitude *= 0.5;
+	}
+
+	return value;
+}
+
 @fragment
 fn fragment(
 	in: VertexOutput,
 	@builtin(front_facing) is_front: bool,
 ) -> FragmentOutput {
 	var pbr_input = pbr_input_from_standard_material(in, is_front);
-	pbr_input.material.base_color.b = pbr_input.material.base_color.r;
 
 	var out: FragmentOutput;
 	out.color = apply_pbr_lighting(pbr_input);
 
-	var pos = vec2(in.uv * 5.0) + vec2(globals.time);
+	var pos = vec2(in.uv * 2.0);
+
+	var n = fbm(pos);
+
+	// out.color *= n;
+
+	var cutoff = abs(sin(globals.time));
 
-	var n = noise(pos);
+	if n > cutoff {
+		discard;
+	}
 
-	out.color = vec4(vec3(n), abs(sin(globals.time)));
+	if n > (cutoff - 0.01) {
+        out.color = vec4(0.0, 1.0, 1.0, 1.0);
+	}
 
 	return out;
 }

examples/shaders.rs

@@ -25,8 +25,7 @@ fn setup(
 ) {
 	commands.spawn(MaterialMeshBundle {
 		mesh: meshes.add(
-			Mesh::try_from(shape::UVSphere {
+			Mesh::try_from(shape::Box {
-				radius: 1.0,
 				..default()
 			}).unwrap(),
 		),
@@ -34,7 +33,7 @@ fn setup(
 		material: materials.add(ExtendedMaterial {
 			base: StandardMaterial {
 				base_color: Color::RED,
-				opaque_render_method: OpaqueRendererMethod::Forward,
+				opaque_render_method: OpaqueRendererMethod::Auto,
 				alpha_mode: AlphaMode::Mask(0.5),
 				..default()
 			},
@@ -68,9 +67,6 @@ impl MaterialExtension for MatExt {
 	fn fragment_shader() -> ShaderRef {
 		"examples/shaders/dissolve.wgsl".into()
 	}
-	fn deferred_fragment_shader() -> ShaderRef {
-		"examples/shaders/dissolve.wgsl".into()
-	}
 }
 
 fn rotate(