Fix: Clean up lines for rendering even when the Layer is disabled (pl…

…aycanvas#6353)

* Fix: Clean up lines for rendering even when the Layer is disabled

* Update src/scene/immediate/immediate-batch.js

Co-authored-by: Will Eastcott <will@playcanvas.com>

---------

Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>
Co-authored-by: Will Eastcott <will@playcanvas.com>

src/scene/immediate/immediate-batch.js

@@ -91,14 +91,16 @@ class ImmediateBatch {
                 this.meshInstance = new MeshInstance(this.mesh, this.material, identityGraphNode);
             }
 
-            // clear lines when after they were rendered as their lifetime is one frame
-            this.positions.length = 0;
-            this.colors.length = 0;
-
             // inject mesh instance into visible list to be rendered
             visibleList.push(this.meshInstance);
         }
     }
+
+    clear() {
+        // clear lines after they are rendered as their lifetime is one frame
+        this.positions.length = 0;
+        this.colors.length = 0;
+    }
 }
 
 export { ImmediateBatch };

src/scene/immediate/immediate-batches.js

@@ -23,6 +23,10 @@ class ImmediateBatches {
             batch.onPreRender(visibleList, transparent);
         });
     }
+
+    clear() {
+        this.map.forEach(batch => batch.clear());
+    }
 }
 
 export { ImmediateBatches };

src/scene/immediate/immediate.js

@@ -275,6 +275,7 @@ class Immediate {
     onPostRender() {
 
         // clean up line batches
+        this.allBatches.forEach(batch => batch.clear());
         this.allBatches.clear();
 
         // all batches need updating next frame