ref: 659f503804a1e9fbfef23bcac74acdf2f06458fd
parent: e2161c3c4260b8f83e80cb4b6b9fbe139666f66b
author: rodri <rgl@antares-labs.eu>
date: Fri Jan 2 10:36:43 EST 2026
vnc: implement devdraw affinewarp protocol message 'a'
--- a/sys/src/cmd/vnc/devdraw.c
+++ b/sys/src/cmd/vnc/devdraw.c
@@ -870,6 +870,14 @@
p->y = BGLONG(a+1*4);
}
+void
+drawwarp(Warp w, uchar *a)
+{+ w[0][0] = BGLONG(a+0*3*4+0*4); w[0][1] = BGLONG(a+0*3*4+1*4); w[0][2] = BGLONG(a+0*3*4+2*4);
+ w[1][0] = BGLONG(a+1*3*4+0*4); w[1][1] = BGLONG(a+1*3*4+1*4); w[1][2] = BGLONG(a+1*3*4+2*4);
+ w[2][0] = BGLONG(a+2*3*4+0*4); w[2][1] = BGLONG(a+2*3*4+1*4); w[2][2] = BGLONG(a+2*3*4+2*4);
+}
+
Point
drawchar(Memimage *dst, Memimage *rdst, Point p, Memimage *src, Point *sp, DImage *font, int index, int op)
{@@ -1389,6 +1397,13 @@
q += sprint(q, " [%d %d]", BGLONG(a), BGLONG(a+4));
a += 8;
break;
+ case 'M':
+ q += sprint(q, " [[%d %d %d][%d %d %d][%d %d %d]]",
+ BGLONG(a), BGLONG(a+ 4), BGLONG(a+ 8),
+ BGLONG(a+12), BGLONG(a+16), BGLONG(a+20),
+ BGLONG(a+24), BGLONG(a+28), BGLONG(a+32));
+ a += 36;
+ break;
case 'b':
q += sprint(q, " %d", *a++);
break;
@@ -1426,6 +1441,7 @@
Refx *refx;
CScreen *cs;
Refreshfn reffn;
+ Warp w;
a = av;
m = 0;
@@ -1514,6 +1530,22 @@
error(Edrawmem);
}
memfillcolor(i, value);
+ continue;
+
+ /* apply affine transform: 'a' dstid[4] R[4*4] srcid[4] P[2*4] M[3*3*4] smooth[1] */
+ case 'a':
+ printmesg(fmt="LRLPMb", a, 0);
+ m = 1+4+4*4+4+2*4+3*3*4+1;
+ if(n < m)
+ error(Eshortdraw);
+ dst = drawimage(client, a+1);
+ dstid = BGLONG(a+1);
+ drawrectangle(&r, a+5);
+ src = drawimage(client, a+21);
+ drawpoint(&p, a+25);
+ drawwarp(w, a+33);
+ memlaffinewarp(dst, r, src, p, w, a[33+3*3*4]);
+ dstflush(dstid, dst, r);
continue;
/* allocate screen: 'A' id[4] imageid[4] fillid[4] public[1] */
--
⑨