mandelbulb

src/main.rs

@@ -30,6 +30,9 @@ fn setup(
         mesh_translation: transform.translation,
         sphere_radius: 1.0,
         color: Vec4::default(),
+        model_inverse: transform.compute_matrix().inverse(),
+        power: 8.0,
+        iterations: 32,
     }));
 
     commands.spawn((
@@ -49,6 +52,7 @@ fn setup(
     commands.spawn((
         DirectionalLight::default(),
         Transform::from_xyz(1.0, 1.0, 1.0).looking_at(Vec3::ZERO, Vec3::Y),
+        Rotate,
     ));
 
     commands.spawn((
@@ -67,14 +71,12 @@ fn rotate_things(mut q: Query<&mut Transform, With<Rotate>>, time: Res<Time>) {
 }
 
 fn update_volu_material(
-    mut q: Query<(&mut Transform, &MeshMaterial3d<VoluMaterial>), Changed<Transform>>,
+    q: Query<(&Transform, &MeshMaterial3d<VoluMaterial>), Changed<Transform>>,
     mut volu_materials: ResMut<Assets<VoluMaterial>>,
     mut buffers: ResMut<Assets<ShaderStorageBuffer>>,
     time: Res<Time>,
 ) {
-    for (mut transform, material) in q.iter_mut() {
-        transform.translation.y = time.elapsed_secs().sin();
-
+    for (transform, material) in q.iter() {
         let volu_material = volu_materials.get_mut(material.0.id()).unwrap();
 
         let buffer = buffers
@@ -87,6 +89,9 @@ fn update_volu_material(
             mesh_translation: transform.translation,
             sphere_radius: (elapsed.sin() + 3.) / 4.,
             color: vec4((elapsed.sin() + 1.) / 2., 0.0, 0.0, 1.0),
+            model_inverse: transform.compute_matrix(),
+            power: 8.0,
+            iterations: 32,
         };
 
         buffer.set_data(volu_storage);
@@ -110,4 +115,7 @@ pub struct VoluStorage {
     mesh_translation: Vec3,
     sphere_radius: f32,
     color: Vec4,
+    model_inverse: Mat4,
+    power: f32,
+    iterations: i32,
 }