Original Post
Hi, I have a question about DirectDraw's raster operations. I'm writing a 2D game using DirectDraw and I would like to use some raster operations for some special effects (like inverting colors) via DDBLTFX::dwRop or DDBLTFX::dwDDRop. I'm having trouble finding any help on which raster operations DirectDraw supports and where they are defined. I did a google search on raster operations and I found some information on ROP2 and ROP3 here The raster operation I'm interested in is the Source Invert ROP. Do I use ROP2 or ROP3? Thanks.