diff --git a/src/main.c b/src/main.c
index 72d5951..4338210 100644
--- a/src/main.c
+++ b/src/main.c
@@ -118,15 +118,26 @@ int main(){
 
   prof_init();
 
-  if(dgray(DGRAY_ON))
-    goto c3d_abort;
-  dupdate();
-
-  dimage(0,0,&briques0);
-  dimage(63,0,&buisson0);
+  dtext(0,0,C_BLACK,"Activer le mode de gris ?");
+  dtext(0,10,C_BLACK,"Enable grayscale ?");
+  dtext(0,20,C_BLACK,"F1 : Oui/Yes");
+  dtext(0,30,C_BLACK,"F2 : Non/No");
 
   dupdate();
-  getkey();
+  key_event_t keyev = getkey();
+  if(keyev.key == KEY_F1){
+    if(dgray(DGRAY_ON))
+      goto c3d_abort;
+    dupdate();
+
+    dimage(0,0,tex_index[0]);
+    dimage(32,0,tex_index[1]);
+    dimage(64,0,tex_index[2]);
+    dimage(96,0,tex_index[3]);
+
+    dupdate();
+    getkey();
+  }
 
   #if debug
   EngineTimers timers;
diff --git a/src/moteur.c b/src/moteur.c
index 7cd8161..d9c613a 100644
--- a/src/moteur.c
+++ b/src/moteur.c
@@ -178,7 +178,7 @@ inline void __attribute__((always_inline)) draw_stripe(bopti_image_t *tex, int t
     dgray_getvram(&light,&dark);
 
     struct rbox pxbox = {
-      .x = x-texX,
+      .x = (texX&31)-(x&31),
       .visual_x = x,
       .width = 1,
       .left = texX,
@@ -195,7 +195,7 @@ inline void __attribute__((always_inline)) draw_stripe(bopti_image_t *tex, int t
           if(screenPos >= fix(viewport_h))
             return;
           pxbox.y = ffloor(oldPos);
-          bopti_render(tex,&pxbox,light,dark);
+          bopti_render_scsp(tex,&pxbox,light,dark);
           oldPos += 0xFFFF;
         } while(oldPos < screenPos+texSize);
       }