World layers, editing of node references

What's new:

• World layers support via new NodeLayer: they are stored in separate files, which is more convenient way for collaborative work on a project.
• In-place editing of NodeReference from the editor.
• Reduced memory consumption by NormalMapper and AmbientMapper.
• Fixed WorldCluster crashes.
• Fixed wrong texture coordinates in volumetric clouds.
• New flag for ImageDDS: -a allows to downsample a large source image into smaller one with preserving alpha-testing accuracy (don't use this for alpha-blending).
• Fixed buffer overflow in dynamic meshes.
• Correct playback of skinned mesh animation with negative speed.
• Optimized performance of sectors and portals.
• Added engine.editor.releaseNode() function, which removes a node from the editor list, but doesn't delete it.
• Aspect ratio for grass instead of separate width/height settings.
• Material of multi-layer paint (mesh_paint_base).
• Fixed editing of shapes and joints in UnigineEditor.
• Adjustable shadow offset for billboard leaves.

Here you can see the difference in alpha-testing with enhanced downsampling via ImageDDS:

Multi-layer paint material is good for car paint:

Some additional landscape improvements in our game in development (grass everywhere, massive tree arrays):

PS: We are also to announce the next major step forward, which we made recently, so stay tuned.