more

src/pipelines/eraser/eraser-agent.wgsl

@@ -3,6 +3,8 @@ struct Settings {
   eraserMaskAlphaThreshold: f32,
   maskWidth: u32,
   maskHeight: u32,
+  boundsMin: vec2<f32>,
+  boundsMax: vec2<f32>,
 };
 
 @group(1) @binding(0) var<uniform> settings: Settings;
@@ -23,9 +25,18 @@ fn main(
     return;
   }
 
+  let position = agents[id].position;
+  let outsideBounds = position.x < settings.boundsMin.x ||
+    position.y < settings.boundsMin.y ||
+    position.x > settings.boundsMax.x ||
+    position.y > settings.boundsMax.y;
+  if outsideBounds {
+    return;
+  }
+
   let maskSize = vec2<i32>(i32(settings.maskWidth), i32(settings.maskHeight));
   let maskPosition = clamp(
-    vec2<i32>(agents[id].position),
+    vec2<i32>(position),
     vec2<i32>(0, 0),
     maskSize - vec2<i32>(1, 1)
   );