git: 9front

ref: 1e8a9ebb0f76b0ebe8eb31d79c44324c1c1ed70f
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;
}