Colin Geniet:

There are 3 relevant render bins for aircraft models:
- 0: default
- 10: depth sorted, automatically selected for transparent objects.
- 111: depth sorted, explicitly set by some transparent effects (hud, glass)

The model-default effect does not set <render-bin> on purpose, to allow
automatic selection of bin 0 or 10. So my second patch which added <render-bin>
to model-default is wrong.
It is only model-transparent which should explicitly set bin 111
to interact well with hud/glass effects.

Effects/model-transparent.eff

@@ -13,8 +13,45 @@
       <wrap-t>clamp-to-edge</wrap-t>
       <internal-format>normalized</internal-format>
     </texture>
+    <rendering-hint>transparent</rendering-hint>
+    <render-bin>
+      <bin-number>111</bin-number>
+      <bin-name>DepthSortedBin</bin-name>
+    </render-bin>
   </parameters>
 
+  <!-- Place objects in render bin 111 (frontmost transparent objects).
+
+       Remark: <render-bin> parameter is not set in Effects/model-default
+       to allow adjusting the bin based on material alpha. -->
+  <technique n="5">
+    <!-- ALS -->
+    <pass>
+      <render-bin>
+        <bin-number><use>render-bin/bin-number</use></bin-number>
+        <bin-name><use>render-bin/bin-name</use></bin-name>
+      </render-bin>
+    </pass>
+  </technique>
+  <technique n="11">
+    <!-- Non-ALS shaders -->
+    <pass>
+      <render-bin>
+        <bin-number><use>render-bin/bin-number</use></bin-number>
+        <bin-name><use>render-bin/bin-name</use></bin-name>
+      </render-bin>
+    </pass>
+  </technique>
+  <technique n="13">
+    <!-- Fallback (no shaders) -->
+    <pass>
+      <render-bin>
+        <bin-number><use>render-bin/bin-number</use></bin-number>
+        <bin-name><use>render-bin/bin-name</use></bin-name>
+      </render-bin>
+    </pass>
+  </technique>
+
   <technique n="108">
     <scheme>hdr-geometry</scheme>
   </technique>