export your tree texture as PNG or TGA with alpha and load in to your game with LoadTexture("MyTex.png",2) and apply to your model and it will work
way i do is to export texture as a DDS with 1 bit alpha (DX3) and then just load that texture with MASK flag(4) and its working like a charm..
way i do is to export texture as a DDS with 1 bit alpha (DX3) and then just load that texture with MASK flag(4) and its working like a charm..