git: 9front

ref: 8e322e5a5b60c290f6a7cc65f8113bafae36a1e7
dir: /sys/src/libdraw/debug.c/

View raw version 
#include <u.h>
#include <libc.h>
#include <draw.h>

void
drawsetdebug(int v)
{
	uchar *a;

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