defold-mesh-binary

Export mesh of any complexity from Blender to Defold game engine.

The code was rewritten with C++ for better performance, previous version is in lua-mesh branch

demo on github pages

Usage

1. Use defold_mesh_bin.py to export scene from Blender (tested only in 3.0.0)
2. Add def-mesh/binary.go into the scene
3. Require module "def-mesh.binary" and call binary.load(url_to_binary_go, path_to_bin_file_in_resources)
4. For transparent materials, add "trans" predicate and render it after "model" predicate:

	render.set_depth_mask(false)
	render.disable_state(render.STATE_CULL_FACE)
	render.draw(self.trans_pred)
	render.set_depth_mask(true)

Features

• Binary format
• Half precision floats
• Exports all the meshes
• Base color, specular power, roughness and texture for every material (so far only "Principled BSDF")
• Normal map, reflection map, roughness map
• Blend shapes
• Multiple materials per mesh
• Bones
• Bone animations on GPU
• Blend shape animations
• Transparent materials
• Animation tracks
• Animations baked in textures (for performance)
• Editor script to generate animation masks
• Editor script to extract material list

Experimental

• Root Motion (only on based track)
• GameObjects can be attached to bones

Drawbacks

• Meshes are not visible in Editor, only in runtime There is a dummy model in binary.go, so any mesh can be set on it to make scene more obvious in editor. Dummy model is disabled in runtime.

• It looks like animations (mostly Root Motion ones) should be (optionally) interpolated between frames to avoid jitter.

---