diff --git a/boutons.c b/boutons.c
index f689388a..d30cb189 100644
--- a/boutons.c
+++ b/boutons.c
@@ -4799,6 +4799,7 @@ void Dessiner_trame_zoomee(short Orig_X, short Orig_Y)
   for (Pos_Y=0; Pos_Y<Taille_Y; Pos_Y++)
     for (Pos_X=0; Pos_X<Taille_X; Pos_X++)
       Pixel(Debut_X+Pos_X,Debut_Y+Pos_Y,(Trame[Pos_X%Trame_Largeur][Pos_Y%Trame_Hauteur])?CM_Blanc:CM_Noir);
+  SDL_UpdateRect(Ecran_SDL,Debut_X,Debut_Y,Taille_X,Taille_Y);
 }
 
 
@@ -4812,6 +4813,7 @@ void Dessiner_trames_predefinies(void)
       for (i=0; i<16; i++)
         Pixel_dans_fenetre((Indice*23)+10+i,22+j,
                            ((TRAME_PREDEFINIE[Indice][j]>>(15-i))&1)?CM_Blanc:CM_Noir);
+  SDL_UpdateRect(Ecran_SDL,ToWinX(10),ToWinY(22),ToWinL(12*23+16),ToWinH(16));
 }
 
 
diff --git a/divers.c b/divers.c
index 5eb5825f..12cf17a8 100644
--- a/divers.c
+++ b/divers.c
@@ -451,8 +451,7 @@ void Copier_une_partie_d_image_dans_une_autre(byte * Source,word S_Pos_X,word S_
 
 byte Lit_pixel_dans_ecran_brouillon(word X,word Y)
 {
-        UNIMPLEMENTED
-        return 0;
+	return *(Brouillon_Ecran+Y*Brouillon_Largeur_image+X);
 }
 
 void Rotate_90_deg_LOWLEVEL(byte * Source,byte * Destination)
@@ -535,8 +534,7 @@ dword Round_div(dword Numerateur,dword Diviseur)
 
 byte Effet_Trame(word X,word Y)
 {
-        UNIMPLEMENTED
-        return 0;
+	return Trame[X % Trame_Largeur][Y % Trame_Hauteur];
 }
 
 void Set_mouse_position(void)
diff --git a/gfx2.cfg b/gfx2.cfg
index b9bb826e..8f3f184e 100644
Binary files a/gfx2.cfg and b/gfx2.cfg differ