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- #include "lib9.h"
- #include "draw.h"
- Image*
- allocimagemix(Display *d, ulong color1, ulong color3)
- {
- Image *t, *b;
- static Image *qmask;
- if(qmask == nil)
- qmask = allocimage(d, Rect(0,0,1,1), GREY8, 1, 0x3F3F3FFF);
-
- if(d->depth <= 8){ /* create a 2×2 texture */
- t = allocimage(d, Rect(0,0,1,1), d->chan, 0, color1);
- if(t == nil)
- return nil;
- b = allocimage(d, Rect(0,0,2,2), d->chan, 1, color3);
- if(b == nil){
- freeimage(t);
- return nil;
- }
- draw(b, Rect(0,0,1,1), t, nil, ZP);
- freeimage(t);
- return b;
- }else{ /* use a solid color, blended using alpha */
- t = allocimage(d, Rect(0,0,1,1), d->chan, 1, color1);
- if(t == nil)
- return nil;
- b = allocimage(d, Rect(0,0,1,1), d->chan, 1, color3);
- if(b == nil){
- freeimage(t);
- return nil;
- }
- draw(b, b->r, t, qmask, ZP);
- freeimage(t);
- return b;
- }
- }
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