void MeshCollector::append(const TileSpec &tile,
		const video::S3DVertex *vertices, u32 numVertices,
		const u16 *indices, u32 numIndices,
		v3f pos, float visual_scale, video::SColor c)
{
	if(numIndices > 65535)
	{
		dstream<<"FIXME: MeshCollector::append() called with numIndices="<<numIndices<<" (limit 65535)"<<std::endl;
		return;
	}

	PreMeshBuffer *p = NULL;
	for(u32 i=0; i<prebuffers.size(); i++)
	{
		PreMeshBuffer &pp = prebuffers[i];
		if(pp.tile != tile)
			continue;
		if(pp.indices.size() + numIndices > 65535)
			continue;

		p = &pp;
		break;
	}

	if(p == NULL)
	{
		PreMeshBuffer pp;
		pp.tile = tile;
		prebuffers.push_back(pp);
		p = &prebuffers[prebuffers.size()-1];
	}

	u32 vertex_count = p->vertices.size();
	for(u32 i=0; i<numIndices; i++)
	{
		u32 j = indices[i] + vertex_count;
		p->indices.push_back(j);
	}
	for(u32 i=0; i<numVertices; i++)
	{
		video::S3DVertex vert = vertices[i];
		vert.Pos *= visual_scale;
		vert.Pos += pos;
		vert.Color = c;
		p->vertices.push_back(vert);
	}
}