diff --git a/renderer2/hrend/math.go b/renderer2/hrend/math.go
index 972aaf7..aeeddff 100644
--- a/renderer2/hrend/math.go
+++ b/renderer2/hrend/math.go
@@ -149,6 +149,13 @@ func (m *Mat44f) SetViewport(tl Vec3f, br Vec3f) { //width, height, depth int) {
 	//m.Set(2, 3, (br.Z+tl.Z)/2)
 }
 
+// Convert the point to a viewport point
+func (v *Vec3f) ViewportSelf(width, height int) {
+	v.X = (v.X + 1) / 2 * float32(width)
+	v.Y = (1 - (v.Y+1)/2) * float32(height)
+	// Don't touch Z
+}
+
 func (m *Mat44f) SetViewportSimple(width, height, depth int) {
 	var tl Vec3f // All zero
 	br := Vec3f{
diff --git a/renderer2/main.go b/renderer2/main.go
index 8b0b460..8e09d6e 100644
--- a/renderer2/main.go
+++ b/renderer2/main.go
@@ -210,9 +210,9 @@ func main() {
 	objects[len(objects)-1].Pos.Z -= 2
 
 	// These don't really change
-	var projection, viewport hrend.Mat44f
+	var projection hrend.Mat44f //, viewport hrend.Mat44f
 	projection.SetProjection(float32(*fov), float32(Width)/float32(Height), NearClip, FarClip)
-	viewport.SetViewportSimple(int(Width), int(Height), 1) //65535)
+	//viewport.SetViewportSimple(int(Width), int(Height), 1) //65535)
 
 	var camera hrend.Mat44f
 	var newcamtrans hrend.Vec3f
@@ -234,7 +234,7 @@ func main() {
 		camtrans = *camtrans.Add(&newcamtrans)
 		_ = camera.SetCamera(&camtrans, yaw, pitch, &camup)
 		screenmat := camera.Inverse().Multiply(&projection)
-		screenmat = screenmat.Multiply(&viewport)
+		//screenmat = screenmat.Multiply(&viewport)
 
 		rb.ResetZBuffer()
 		for y := range Height {
@@ -253,7 +253,6 @@ func main() {
 			modelmat.SetLookAt(&o.Pos, o.Pos.Add(&o.LookVec), &camup)
 			modelmat.ScaleSelf(o.Scale)
 			matrix3d := modelmat.Multiply(screenmat)
-			//matrix3d.ScaleSelf(o.Scale)
 			for _, f := range o.Model.Faces {
 				for i := range 3 {
 					sc[i] = f[i]
@@ -264,6 +263,10 @@ func main() {
 				log.Print(o.Model.Faces[0][0].Pos, o.Model.Faces[0][1].Pos, o.Model.Faces[0][2].Pos)
 				log.Print(sc[0].Pos, sc[1].Pos, sc[2].Pos)
 				log.Print(matrix3d)
+				for i := range 3 {
+					// Perspective divide (?) and screen coord
+					sc[i].Pos.ViewportSelf(*width, *height)
+				}
 				//log.Print(sc[0].Pos, sc[1].Pos, sc[2].Pos, matrix3d)
 				if o.Lighting {
 					l1 := f[2].Pos.Sub(&f[0].Pos)