shithub: 3dee

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vis: don't allow peeking outside the framebuffer.

--- a/vis.c

+++ b/vis.c

@@ -597,6 +597,8 @@

 		p₂ = Pt2(p.x, p.y, 1);

 		p₂ = rframexform(p₂, *maincam->view);

 		p = Pt(p₂.x, p₂.y);

+		if(!ptinrect(p, maincam->view->r))

+			return;

 		qlock(maincam->view->fbctl);

 		fb = maincam->view->getfb(maincam->view);

 		c = ul2col(fb->cb[p.y*Dx(fb->r) + p.x]);