White-Black screen

[whiteblXK]

Hello, i want to do somethink like this: http://prntscr.com/3puhpv
I have file game_shader and when i use buffl, opcodes must send to client information about change shaders for cid, when i deactivated buff opcode must restore to normal shaders, how to do this?

 

[whiteblXK]

bump

 

[Summ]

Register opcode and send opcode with shader name / id as the buffer from your server when the player enters the area.