git: 9front

ref: 84f6061a92d92f6f0136f7d6ab42fa03c38d5a78
dir: /sys/src/libdraw/debug.c/

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#include <u.h>
#include <libc.h>
#include <draw.h>

void
drawsetdebug(int v)
{
	uchar *a;
	a = bufimage(display, 1+1);
	if(a == 0){
		fprint(2, "drawsetdebug: %r\n");
		return;
	}
	a[0] = 'D';
	a[1] = v;
}