Home Forums Programming transparency question

  • This topic has 2 replies, 2 voices, and was last updated 16 years ago by Anonymous.
Viewing 2 reply threads
  • Author
    Posts
    • #4357
      Anonymous
      Inactive

      been a while since i did any 2d stuff especially with dx9, mostly did it with 7\8.

      Can any of ye tell me for the colorkey to work in loading a bitmap to a IDirect3DSurface9 surface does alpha blending need to be switched on in the renderstate of the direct3d device? coz i banged together a bit of code the other night, but seems that all my bitmaps have a black box around them, even though i set a colorkey (transparency on pink), backgrounds of the bitmaps are pink because its a colour which is used no where else in the game. but still get a black box around the bitmap.. really screwing up the effect of my aliens and ray gun particles.. :)

      Anyway if anyone can shed a light twould be nice.

    • #23191
      Anonymous
      Inactive

      Is colour keying supported with IDirect3DSurface9? Last time I did anything in 2D I used Direct Draw 7 surfaces. And didn’t need to do anything aside from setting the color key per surface…

      My understanding is that after 7 the directx dev group stopped supporting a proper 2D pipeline, and expected you to switch over to using alpha channels and all that to suit the hardware they now assumed everyone would have, infuriating quite a few developers in the casual market. (There’s something of a rant about it in Game Coding Complete)

    • #23216
      Anonymous
      Inactive

      cheers ill check that up. i do know though that colokeys are supported in directx8. ill have to check 9 so.

Viewing 2 reply threads
  • The forum ‘Programming’ is closed to new topics and replies.