JFK is correct. Here is an example showing some trees I have made.
The only difference is the following line.
leaves = LoadTexture ("leaves2_mask.png",1+4);mask version
leaves = LoadTexture ("leaves2_alpha.png",1+2);alpha version
note that the alpha version does not have correct z-depth,... this needs to be done in an extra step when using alpha blending.
The only difference is the following line.
leaves = LoadTexture ("leaves2_mask.png",1+4);mask version
leaves = LoadTexture ("leaves2_alpha.png",1+2);alpha version
note that the alpha version does not have correct z-depth,... this needs to be done in an extra step when using alpha blending.