1 #include <u.h>
2 #include "x11-inc.h"
3 #include <libc.h>
4 #include <draw.h>
5 #include <memdraw.h>
6 #include "x11-memdraw.h"
7 
8 static int xdraw(Memdrawparam*);
9 
10 /*
11  * The X acceleration doesn't fit into the standard hwaccel
12  * model because we have the extra steps of pulling the image
13  * data off the server and putting it back when we're done.
14  */
15 void
16 memimagedraw(Memimage *dst, Rectangle r, Memimage *src, Point sp,
17 	Memimage *mask, Point mp, int op)
18 {
19 	Memdrawparam *par;
20 
21 	if((par = _memimagedrawsetup(dst, r, src, sp, mask, mp, op)) == nil)
22 		return;
23 
24 	/* only fetch dst data if we need it */
25 	if((par->state&(Simplemask|Fullmask)) != (Simplemask|Fullmask))
26 		_xgetxdata(par->dst, par->r);
27 
28 	/* always fetch source and mask */
29 	_xgetxdata(par->src, par->sr);
30 	_xgetxdata(par->mask, par->mr);
31 
32 	/* now can run memimagedraw on the in-memory bits */
33 	_memimagedraw(par);
34 
35 	if(xdraw(par))
36 		return;
37 
38 	/* put bits back on x server */
39 	_xputxdata(par->dst, par->r);
40 }
41 
42 static int
43 xdraw(Memdrawparam *par)
44 {
45 	u32int sdval;
46 	uint m, state;
47 	Memimage *src, *dst, *mask;
48 	Point dp, mp, sp;
49 	Rectangle r;
50 	Xmem *xdst, *xmask, *xsrc;
51 	XGC gc;
52 
53 	if(par->dst->X == nil)
54 		return 0;
55 
56 	dst   = par->dst;
57 	mask  = par->mask;
58 	r     = par->r;
59 	src   = par->src;
60 	state = par->state;
61 
62 	/*
63 	 * If we have an opaque mask and source is one opaque pixel,
64 	 * we can convert to the destination format and just XFillRectangle.
65 	 */
66 	m = Simplesrc|Simplemask|Fullmask;
67 	if((state&m) == m){
68 		_xfillcolor(dst, r, par->sdval);
69 	//	xdirtyxdata(dst, r);
70 		return 1;
71 	}
72 
73 	/*
74 	 * If no source alpha and an opaque mask, we can just copy
75 	 * the source onto the destination.  If the channels are the
76 	 * same and the source is not replicated, XCopyArea works.
77 	 */
78 	m = Simplemask|Fullmask;
79 	if((state&(m|Replsrc))==m && src->chan==dst->chan && src->X){
80 		xdst = dst->X;
81 		xsrc = src->X;
82 		dp = subpt(r.min,       dst->r.min);
83 		sp = subpt(par->sr.min, src->r.min);
84 		gc = dst->chan==GREY1 ?  _x.gccopy0 : _x.gccopy;
85 
86 		XCopyArea(_x.display, xsrc->pixmap, xdst->pixmap, gc,
87 			sp.x, sp.y, Dx(r), Dy(r), dp.x, dp.y);
88 	//	xdirtyxdata(dst, r);
89 		return 1;
90 	}
91 
92 	/*
93 	 * If no source alpha, a 1-bit mask, and a simple source,
94 	 * we can copy through the mask onto the destination.
95 	 */
96 	if(dst->X && mask->X && !(mask->flags&Frepl)
97 	&& mask->chan==GREY1 && (state&Simplesrc)){
98 		xdst = dst->X;
99 		xmask = mask->X;
100 		sdval = par->sdval;
101 
102 		dp = subpt(r.min, dst->r.min);
103 		mp = subpt(r.min, subpt(par->mr.min, mask->r.min));
104 
105 		if(dst->chan == GREY1){
106 			gc = _x.gcsimplesrc0;
107 			if(_x.gcsimplesrc0color != sdval){
108 				XSetForeground(_x.display, gc, sdval);
109 				_x.gcsimplesrc0color = sdval;
110 			}
111 			if(_x.gcsimplesrc0pixmap != xmask->pixmap){
112 				XSetStipple(_x.display, gc, xmask->pixmap);
113 				_x.gcsimplesrc0pixmap = xmask->pixmap;
114 			}
115 		}else{
116 			/* this doesn't work on rob's mac?  */
117 			return 0;
118 			/* gc = _x.gcsimplesrc;
119 			if(dst->chan == CMAP8 && _x.usetable)
120 				sdval = _x.tox11[sdval];
121 
122 			if(_x.gcsimplesrccolor != sdval){
123 				XSetForeground(_x.display, gc, sdval);
124 				_x.gcsimplesrccolor = sdval;
125 			}
126 			if(_x.gcsimplesrcpixmap != xmask->pixmap){
127 				XSetStipple(_x.display, gc, xmask->pixmap);
128 				_x.gcsimplesrcpixmap = xmask->pixmap;
129 			}
130 			*/
131 		}
132 		XSetTSOrigin(_x.display, gc, mp.x, mp.y);
133 		XFillRectangle(_x.display, xdst->pixmap, gc, dp.x, dp.y,
134 			Dx(r), Dy(r));
135 	//	xdirtyxdata(dst, r);
136 		return 1;
137 	}
138 
139 	/*
140 	 * Can't accelerate.
141 	 */
142 	return 0;
143 }
144