diff --git a/CMakeLists.txt b/CMakeLists.txt
index a666cb1..65a6fb6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ set(ASSETS
 fxconv_declare_assets(${ASSETS} ${ASSETS_fx} ${ASSETS_cg} WITH_METADATA)
 
 add_executable(myaddin ${SOURCES} ${ASSETS} ${ASSETS_${FXSDK_PLATFORM}})
-target_compile_options(myaddin PRIVATE -Wall -Wextra -Ofast)
+target_compile_options(myaddin PRIVATE -Wall -Wextra -O3 -fira-region=all )
 target_link_libraries(myaddin Gint::Gint )
 target_link_libraries(myaddin LibProf::LibProf)
 target_link_options(myaddin PRIVATE -Wl,--print-memory-usage)
diff --git a/src/.main.c.swp b/src/.main.c.swp
new file mode 100644
index 0000000..c28ecf0
Binary files /dev/null and b/src/.main.c.swp differ
diff --git a/src/main.c b/src/main.c
index 66f2e02..98bd03e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -19,7 +19,7 @@
 #include "map_test.h"
 
 //====== Maze3D V0.2 =====
-// Git du moteur : https://github.com/attilavs2/Raycaster_prealpha
+// Git du moteur : https://github.com/attilavs2/Raycaster_G90
 // Git du jeu : https://gitea.planet-casio.com/Fcalva/Maze3D
 //
 // Page du jeu : https://www.planet-casio.com/Fr/programmes/programme4355-1-maze3d-fcalva-jeux-reflexion.html
@@ -43,7 +43,7 @@ void USB_capture() {
 }
 #endif
 
-#define debug //pour afficher les infos de debug
+//#define debug //pour afficher les infos de debug
 
 extern char map_test[map_w][map_h];
 
@@ -110,8 +110,8 @@ int main(){
 
 	load_map();
 
-	image_t frame_buffer = *image_alloc(viewport_w, viewport_h, IMAGE_RGB565A);
-	
+	image_t *frame_buffer = image_create_vram();
+
 	image_t sky_tex = *image_alloc(64, 64, IMAGE_RGB565);
 	image_t WXOR_tex = *image_alloc(64, 64, IMAGE_RGB565);
 	image_t D_tex = *image_alloc(64, 64, IMAGE_RGB565);
@@ -126,35 +126,33 @@ int main(){
 	}
 	image_fill(&D_tex, 0x4228);
 	image_fill(&sky_tex, 0x9dbd);
-	
+
 	prof_init();
 
     	#ifdef USB
     	usb_interface_t const *interfaces[] = {&usb_ff_bulk, NULL};
     	usb_open(interfaces, GINT_CALL_NULL);
     	#endif
-	
+
 	while (exit_game == 0) {
 		prof_t frame = prof_make();
 		prof_enter(frame);
-		
+
 		drect(0, 0, 395, 112, 0x9dbd);
 		drect(0,112, 395, 243, 0xc4c9);
 
-		image_clear(&frame_buffer);
+		image_clear(frame_buffer);
 
-		draw_walls(&buisson0, &briques0, &sky_tex, &WXOR_tex, &D_tex, &frame_buffer);
-
-		dimage(0, 0, &frame_buffer);
+		draw_walls(&buisson0, &briques0, &sky_tex, &WXOR_tex, &D_tex, frame_buffer);
 
 		if(first_frame == 1) main_menu();
-		
+
 		keys_get();
 
 		logic();
 
 		if (disp_frame_time == 1) dprint( 1, 10, C_BLACK, "Frame time : %d ms", frame_time);
-		
+
 		#ifdef debug
 		dprint( 1, 20, C_BLACK, "planeX : %d", planeX);
 		dprint( 1, 30, C_BLACK, "planeY : %d", planeY);
@@ -171,12 +169,13 @@ int main(){
 	}
 
 	prof_quit();
+	#ifdef USB
 	usb_close();
+	#endif
 
 	free(&sky_tex);
 	free(&WXOR_tex);
 	free(&D_tex);
-	free(&frame_buffer);
 
 	return 1;
 }
diff --git a/src/moteur.c b/src/moteur.c
index 0d99fc7..9a74f34 100644
--- a/src/moteur.c
+++ b/src/moteur.c
@@ -345,13 +345,14 @@ void draw_walls(image_t *tex_1, image_t *tex_2, image_t *tex_3, image_t *tex_4,
       fixed_t texSize = fix(lineHeight) / 64; //taille proportionelle de la ligne a la tex
       if (texSize < 0x400) texSize = 0x400; //0x400 = 1/64 * 2^16
       if (texSize > 0x3D000) { //0x3D000 = 3.8125 * 2^16, 3.8125 = viewport_h/64
-        texSample = ffloor(fdiv(fix(viewport_h), texSize));
+        texSample = fceil(fdiv(fix(viewport_h), texSize));
         texSampleY  = 32 - (int)texSample * 0.5 + 1;
       }
       else {
         texSample = 64;
         texSampleY = 0; 
       }
+      
 
       image_t texStripe;
       image_clear(&texStripe);
@@ -365,8 +366,6 @@ void draw_walls(image_t *tex_1, image_t *tex_2, image_t *tex_3, image_t *tex_4,
       }
 
       image_scale(&texStripe, 0xFFFF, texSize, &temp);
-      temp.src_stride = 1;
-      temp.dst_stride = 1;
       image_linear(&texStripe, image_at(frame_buffer, x, (int)(viewport_h * 0.5 - lineHeight * 0.5) + v_offset), &temp); 
     }
 }