Hmm.. On A7 and A8, when I open the mtlFX.c, at line 494 there's a mtl_terraintex3 material and fx_terraintex3 action. That's what I use. It worked fine on A7, but when I shifted my game to A8 and compiled the code, the shader doesn't appear already. It's rly weird, cuz I didn't change anything - the action is attached to the terrain, the skins are in the folder, the terrain skin_1 is the RGB map...