diff --git a/basegraph.cpp b/basegraph.cpp
index 767f8cba..6224201e 100644
--- a/basegraph.cpp
+++ b/basegraph.cpp
@@ -58,7 +58,7 @@ struct display_data {
   transmatrix radar_transform_post;
 
   ld eyewidth();
-  bool stereo_active();
+  bool separate_eyes();
   bool in_anaglyph();
 
   void set_viewport(int ed);
@@ -108,7 +108,7 @@ EX int get_sightrange_ambush() {
   }
 
 bool display_data::in_anaglyph() { return vid.stereo_mode == sAnaglyph; }
-bool display_data::stereo_active() { return vid.stereo_mode != sOFF; }
+bool display_data::separate_eyes() { return among(vid.stereo_mode, sAnaglyph, sLR); }
 
 ld display_data::eyewidth() { 
   switch(vid.stereo_mode) {
diff --git a/drawing.cpp b/drawing.cpp
index 0a48a6ea..0d6b9791 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -229,7 +229,7 @@ EX void glflush() {
     
     else
     #endif
-    for(int ed = (current_display->stereo_active() && text_shift)?-1:0; ed<2; ed+=2) {
+    for(int ed = (current_display->separate_eyes() && text_shift)?-1:0; ed<2; ed+=2) {
       glhr::set_modelview(glhr::translate(-ed*text_shift-current_display->xcenter,-current_display->ycenter, 0));
       current_display->set_mask(ed);
       drawer();
@@ -237,7 +237,7 @@ EX void glflush() {
       GLERR("print");
       }
 
-    if(current_display->stereo_active() && text_shift && !svg::in) current_display->set_mask(0);
+    if(current_display->separate_eyes() && text_shift && !svg::in) current_display->set_mask(0);
  
     texts_merged = 0;
     text_vertices.clear();
@@ -474,7 +474,7 @@ void addpoint(const shiftpoint& H) {
 void coords_to_poly() {
   polyi = isize(glcoords);
   for(int i=0; i<polyi; i++) {
-    if(!current_display->stereo_active()) glcoords[i][2] = 0;
+    if(!current_display->separate_eyes()) glcoords[i][2] = 0;
 
     polyx[i]  = current_display->xcenter + glcoords[i][0] - glcoords[i][2]; 
     polyxr[i] = current_display->xcenter + glcoords[i][0] + glcoords[i][2]; 
@@ -663,7 +663,7 @@ void dqi_poly::gldraw() {
   int ioffset = offset;
   
 #if MINIMIZE_GL_CALLS  
-  if(current_display->stereo_active() == 0 && !tinf && (color == 0 || ((flags & (POLY_VCONVEX | POLY_CCONVEX)) && !(flags & (POLY_INVERSE | POLY_FORCE_INVERTED))))) {
+  if(current_display->separate_eyes() == 0 && !tinf && (color == 0 || ((flags & (POLY_VCONVEX | POLY_CCONVEX)) && !(flags & (POLY_INVERSE | POLY_FORCE_INVERTED))))) {
     if(lprio != prio || texts_merged || m_shift != V.shift) {
       glflush();
       lprio = prio;
@@ -717,7 +717,7 @@ void dqi_poly::gldraw() {
   
   next_slr:
 
-  for(int ed = current_display->stereo_active() ? -1 : 0; ed<2; ed+=2) {
+  for(int ed = current_display->separate_eyes() ? -1 : 0; ed<2; ed+=2) {
     if(global_projection && global_projection != ed) continue;
 
     if(min_slr < max_slr) {
@@ -2136,10 +2136,10 @@ void dqi_poly::draw() {
     else
       filledPolygonColorI(srend, polyx, polyy, polyi, color);
   
-    if(current_display->stereo_active()) filledPolygonColorI(auxrend, polyxr, polyy, polyi, color);
+    if(current_display->separate_eyes()) filledPolygonColorI(auxrend, polyxr, polyy, polyi, color);
     
     ((vid.antialias & AA_NOGL) ?aapolylineColor:polylineColor)(srend, polyx, polyy, polyi, outline);
-    if(current_display->stereo_active()) aapolylineColor(auxrend, polyxr, polyy, polyi, outline);
+    if(current_display->separate_eyes()) aapolylineColor(auxrend, polyxr, polyy, polyi, outline);
     
     if(vid.xres >= 2000 || fatborder) {
       int xmi = 3000, xma = -3000;
@@ -2623,7 +2623,7 @@ EX void drawqueue() {
     }
 
 #if CAP_SDL
-  if(current_display->stereo_active() && !vid.usingGL) {
+  if(current_display->separate_eyes() && !vid.usingGL) {
 
     if(aux && (aux->w != s->w || aux->h != s->h)) {
       SDL_FreeSurface(aux);
@@ -2651,7 +2651,7 @@ EX void drawqueue() {
   reset_projection();
   
   #if CAP_GL
-  if(model_needs_depth() && current_display->stereo_active()) {
+  if(model_needs_depth() && current_display->separate_eyes()) {
     global_projection = -1;
     draw_main();
     #if CAP_GL
diff --git a/hypgraph.cpp b/hypgraph.cpp
index ec3516b2..b1deea27 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -167,7 +167,7 @@ bool use_z_coordinate() {
   #if CAP_VR
   if(vrhr::rendering()) return true;
   #endif
-  return current_display->stereo_active();
+  return current_display->separate_eyes();
   }
 
 void apply_depth(hyperpoint &f, ld z) {
@@ -2783,7 +2783,7 @@ EX void draw_boundary(int w) {
   switch(pmodel) {
   
     case mdTwoPoint: {
-      if(twopoint_do_flips || current_display->stereo_active() || !sphere) return;
+      if(twopoint_do_flips || current_display->separate_eyes() || !sphere) return;
       queuereset(mdPixel, p);
   
       for(int b=-1; b<=1; b+=2)
diff --git a/sky.cpp b/sky.cpp
index 9f6254f9..58846d7d 100644
--- a/sky.cpp
+++ b/sky.cpp
@@ -315,7 +315,7 @@ void dqi_sky::draw() {
     
   be_euclidean_infinity(s);
 
-  for(int ed = current_display->stereo_active() ? -1 : 0; ed<2; ed+=2) {
+  for(int ed = current_display->separate_eyes() ? -1 : 0; ed<2; ed+=2) {
     if(global_projection && global_projection != ed) continue;
     current_display->next_shader_flags = GF_VARCOLOR;
     current_display->set_all(ed, 0);