Detail Textures on Atlas2 terrains (sorta)

Hello everyone,
After weeks of working trying to get detail textures (and normal maps by simple extension) working on Atlas2, here is how you do it.
Thanks to Dave Young for most of this code (except for any broken parts, those are my fault :)
In atlas/runtime/clipmapBatcher.cpp add this function

void AtlasClipMapBatcher::renderDetail()
{
   PROFILE_START(AtlasClipMapBatcher_renderDetail);

   // Grab the shader for this pass - replaceme w/ real code.
   GFXShader *s;
   ShaderData *sd;
   if(!Sim::findObject("AtlasShader", sd))
   {
      Con::errorf("AtlasClipMapBatcher::renderDetail - no shader 'AtlasSurface");
      return;
   }

   // Set up the fog shader and texture.
   GFX->setShader(sd->shader);


   GFX->setTexture(2, mClipMap->getDetailTex());
   GFX->setTextureStageAddressModeU(0, GFXAddressClamp);
   GFX->setTextureStageAddressModeV(0, GFXAddressClamp);

   GFX->setTexture(3, mClipMap->getDetailTex());
   GFX->setTextureStageAddressModeU(0, GFXAddressClamp);
   GFX->setTextureStageAddressModeV(0, GFXAddressClamp);

   // We need the eye pos but AtlasInstance2 deals with setting this up.

   // Set blend mode and alpha test as well.
   GFX->setAlphaBlendEnable(true);
   GFX->setSrcBlend(GFXBlendSrcAlpha);
   GFX->setDestBlend(GFXBlendInvSrcAlpha);

   GFX->setAlphaTestEnable(true);
   GFX->setAlphaFunc(GFXCmpGreaterEqual);
   GFX->setAlphaRef(2);


   // And render all the detail chunks - all for now.
   //not sure which constants we need set for the normal surface/detail render

   for(S32 i=0; i<mDetailList.size(); i++)
   {
      // Grab the render note.
      const RenderNote *rn = mDetailList[i];

      // Pass morph constant to the chunk.
      Point4F chunkConsts(rn->morph, 0, 0, 0);
      GFX->setVertexShaderConstF(49, &chunkConsts.x, 1);

      rn->chunk->render();
   }

   GFX->setAlphaBlendEnable(false);
   GFX->setAlphaTestEnable(false);

   // Don't forget to clean up.
   for(S32 i=0; i<4; i++)
      GFX->setTexture(0, NULL);

   PROFILE_END();

}

The rest is elementary, just add in atlasClipMap.cpp a function called

getDetailTex()

All it needs to do is return the current DetailTextureHandle.

Next just modify your materials.cs to include an atlas shader.

Now here's the wierd thing.
This appears to work good for the most part, however I have noticed that if I have more than 1 Atlas terrain instance it fails to render the detailTexture, but will do a nice smoothing pass that does make the whole thing look a whole lot better. but sadly in this case no detail texture gets rendered.

I'm hoping someone can look at this and point me in the right direction.

Regards,
Dreamer