diff --git a/config.cpp b/config.cpp
index 04ed948c..8f2f1fcb 100644
--- a/config.cpp
+++ b/config.cpp
@@ -1185,6 +1185,15 @@ void show3D() {
   using namespace geom3;
   dialog::init(XLAT("3D configuration"));
 
+  if(WDIM == 2) {
+    dialog::addBoolItem(XLAT("use the full 3D models"), geom3::always3, 'U');
+    dialog::add_action([] {
+      geom3::always3 = !geom3::always3;
+      need_reset_geometry = true;
+      callhooks(hooks_swapdim);
+      });
+    }
+
   if(vid.use_smart_range == 0 && DIM == 2) {
     dialog::addSelItem(XLAT("High detail range"), fts(highdetail), 'n');
     dialog::addSelItem(XLAT("Mid detail range"), fts(middetail), 'm');
@@ -1218,7 +1227,7 @@ void show3D() {
       dialog::editNumber(mouseaim_sensitivity, -1, 1, 0.002, 0.01, XLAT("mouse aiming sensitivity"), "set to 0 to disable");
       });
     }
-  if(DIM == 2) dialog::addSelItem(XLAT("camera rotation"), fts3(vid.camera_angle), 's');
+  dialog::addSelItem(XLAT("camera rotation"), fts3(vid.camera_angle), 's');
   if(DIM == 2) {
     dialog::addSelItem(XLAT("fixed facing"), vid.fixed_facing ? fts(vid.fixed_facing_dir) : XLAT("OFF"), 'f');
     dialog::add_action([] () { vid.fixed_facing = !vid.fixed_facing; 
@@ -1228,7 +1237,7 @@ void show3D() {
         }
       });
     }
-  if(DIM == 2) {
+  if(true) {
     dialog::addBreak(50);
     dialog::addSelItem(XLAT("projection"), current_proj_name(), 'M');
     }
diff --git a/floorshapes.cpp b/floorshapes.cpp
index b5115334..d9f868e3 100644
--- a/floorshapes.cpp
+++ b/floorshapes.cpp
@@ -890,7 +890,6 @@ void make_floor_textures() {
     dynamicval<bool> a3(geom3::always3, false);
     dynamicval<bool> hq(inHighQual, true);
     dynamicval<int> hd(darken, 0);
-    dynamicval<ld> ga(vid.alpha, 1);
     dynamicval<ld> gd(geom3::depth, 1);
     dynamicval<ld> gc(geom3::camera, 1);
   
@@ -899,6 +898,8 @@ void make_floor_textures() {
     vid.xres = FLOORTEXTURESIZE;
     vid.yres = FLOORTEXTURESIZE;
     vid.scale = 0.25;
+    vid.camera_angle = 0;
+    vid.alpha = 1;
     dynamicval<ld> lw(vid.linewidth, 2);
 
     floor_textures = new renderbuffer(vid.xres, vid.yres, vid.usingGL);
diff --git a/geometry.cpp b/geometry.cpp
index 30676926..d344be4a 100644
--- a/geometry.cpp
+++ b/geometry.cpp
@@ -250,7 +250,7 @@ namespace geom3 {
   
   ld lev_to_factor(ld lev) { 
     if(WDIM == 3) return lev;
-    if(GDIM == 3) return lev - depth;
+    if(GDIM == 3) return depth - lev;
     return projection_to_factor(lev_to_projection(lev)); 
     }
   ld factor_to_lev(ld fac) { 
@@ -335,7 +335,7 @@ namespace geom3 {
       BIRD = 1.20;
       }
     else {
-      INFDEEP = GDIM == 3 ? -10 : (euclid || sphere) ? 0.01 : lev_to_projection(0) * tanh(camera);
+      INFDEEP = GDIM == 3 ? +10 : (euclid || sphere) ? 0.01 : lev_to_projection(0) * tanh(camera);
       ld wh = actual_wall_height();
       WALL = lev_to_factor(wh);
       FLOOR = lev_to_factor(0);
diff --git a/graph.cpp b/graph.cpp
index fe2add8f..e400eeac 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -3723,7 +3723,7 @@ void pushdown(cell *c, int& q, const transmatrix &V, double down, bool rezoom, b
       auto pp = dynamic_cast<dqi_poly*> (&*ptds[q++]);
       if(!pp) continue;
       auto& ptd = *pp;
-      ptd.V = ptd.V * zpush(-down);
+      ptd.V = ptd.V * zpush(+down);
       }
     return;
     }
@@ -6100,6 +6100,7 @@ void make_actual_view() {
   if(WDIM == 3) { actual_view_transform = Id; return; }
   if(sphereflipped()) sphereflip[DIM][DIM] = -1;
   actual_view_transform = ypush(vid.yshift) * sphereflip;  
+  if(geom3::always3) actual_view_transform = zpush(+geom3::camera) * actual_view_transform;
   }
 
 transmatrix cview() {