803ce07701
We no longer use the hardcoded objectUniform UBO name, instead, we access the object uniforms through the new getObjectUniforms(). Because it's not possible to return a "Uniform Block" from a function in GLSL, a large part of this change, is to replace the interface block by a structure. Note: getObjectUniforms() is not public, but it is used by gltfio to access the userData field, which is also not public at the moment.