diff --git a/polymer/eduke32/source/premap.c b/polymer/eduke32/source/premap.c
index 3fd63b3eb..f732f18c2 100644
--- a/polymer/eduke32/source/premap.c
+++ b/polymer/eduke32/source/premap.c
@@ -560,7 +560,11 @@ void G_SetupCamTile(int32_t i,int32_t wn)
     //if (waloff[wn] == 0) loadtile(wn);
     setviewtotile(wn,tilesizy[wn],tilesizx[wn]);
 
+    yax_preparedrawrooms();
     drawrooms(SX,SY,SZ,SA,100+sprite[i].shade,SECT);
+    // g_yax_smoothratio?
+    yax_drawrooms(G_AnalyzeSprites, 100+sprite[i].shade, SECT);
+
     display_mirror = 1;
     G_DoSpriteAnimations(SX,SY,SA,65536L);
     display_mirror = 0;
diff --git a/polymer/eduke32/source/sector.c b/polymer/eduke32/source/sector.c
index 5f9b65424..c48f3f9dc 100644
--- a/polymer/eduke32/source/sector.c
+++ b/polymer/eduke32/source/sector.c
@@ -383,6 +383,11 @@ void G_AnimateCamSprite(void)
                 allocatepermanenttile(TILE_VIEWSCR,tilesizx[PN],tilesizy[PN]);
             else walock[TILE_VIEWSCR] = 255;
             G_SetupCamTile(OW,/*PN*/TILE_VIEWSCR);
+#ifdef POLYMER
+            // HACK: force texture update on viewscreen sprite in Polymer!
+            if (rendmode==4)
+                sprite[i].filler ^= (1<<1);
+#endif
         }
     }
     else T1++;