Blit Flags
Blit flags are bit flags which can be passed to some map functions, to specify a certain effect when blitting a graphic. These functions are:
They can also be used to specify a certain effect for the blitting of the graphic of a process, by assigning blit flags to its local variable flags.
Blitting is the operation of drawing one graph onto another, using so-called bit blitting operations (see Wikipedia on bit blitting).
List
| Constant | Value | Description |
|---|---|---|
B_HMIRROR | 1 | Blit the graph horizontally mirrored. |
B_VMIRROR | 2 | Blit the graph vertically mirrored. |
B_TRANSLUCENT | 4 | Blit the graph with half transparency. |
B_ALPHA | 8 | Blit the graph in some way. (What does this do exactly?) |
B_ABLEND | 16 | Blit the graph using additive blending. Nice effect for fire. |
B_SBLEND | 32 | Blit the graph using subtractive blending. Nice effect for ghosting. |
B_NOCOLORKEY | 128 | Blit the transparent parts of the graph as black (color 0). |