diff --git a/Makefile b/Makefile
index 36f0451..6c3de0b 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@
 target ?= sh3eb-elf
 
 cflags := -m3 -mb -D FX9860G -ffreestanding -nostdlib -fstrict-volatile-bitfields -Wall \
-          -Wextra -Os -I .
+          -Wextra -Os -Iinclude -I  .
 
 lib    := libfxengine.a
 header := include/
@@ -31,15 +31,19 @@ build/%.c.o: %.c
 	@ mkdir -p $(dir $@)
 	$(target)-gcc -c $< -o $@ $(cflags)
 
-clear:
+clean:
 	@ rm -rf build
 	@ rm -f $(lib)
 
 %/:
 	mkdir -p $@
 
+reinstall:
+	@ make clean
+	@ make
+	@ make install
 
 install:
 	sh3eb-elf-ar -t $(lib)
 	cp $(lib) $(prefix)
-	cp -r $(header) $(prefix)include/fxengine
\ No newline at end of file
+	cp -r $(header) $(prefix)/include/fxengine
diff --git a/build/src/render/zbuffer.c.o b/build/src/render/zbuffer.c.o
index cc01f0e..94e41bf 100644
Binary files a/build/src/render/zbuffer.c.o and b/build/src/render/zbuffer.c.o differ
diff --git a/include/render/bitmap.h b/include/render/bitmap.h
index a5afb4b..b65d66c 100644
--- a/include/render/bitmap.h
+++ b/include/render/bitmap.h
@@ -5,46 +5,47 @@
    0 dans layout -> transparent
    1 dans layout -> 1 dans color -> noir
    					0 dans color -> blanc */
-
-struct bitmap_rich_8
+/** bitmap rich type
+* @warning Monochrome only !
+* transparency is in the layout
+*/
+struct bitmap_rich
 {
-	uint32_t size_px_x; // largeur en pixels
-	uint32_t size_px_y; // hauteur en pixels
-	uint32_t size_o_y; // taille en octets d'une rangée
+    uint32_t size_px_x;
+    uint32_t size_px_y;
+    uint32_t size_o_y;
 
-	uint8_t * color; // bitmap monochrome
-	uint8_t * layout; // transparence
+    uint32_t * color;
+    uint32_t * layout;
 };
-typedef struct bitmap_rich_16 bitmap_rich_16;
+typedef struct bitmap_rich bitmap_rich;
 
-struct bitmap_rich_16
-{
-	uint32_t size_px_x;
-	uint32_t size_px_y;
-	uint32_t size_o_y;
+/** get the color of pixel from rich bitmap
+* @return the color coded in a unsigned char :
+*  if (color >> 1)
+*      switch (color%2)
+*      {
+*      case 0:
+*          // WHITE
+*          break;
+*      case 1:
+*          // BLACK
+*      }
+*  else
+*      // TRANSPARENT
+* @param the bitmap
+* @param x coordinate
+* @param y coordinate
+*/
+inline uint8_t bitmap_get_pixel_r(const bitmap_rich * bmp, uint32_t x, uint32_t y);
 
-	uint16_t * color;
-	uint16_t * layout;
-};
-typedef struct bitmap_rich_16 bitmap_rich_16;
-
-struct bitmap_rich_32
-{
-	uint32_t size_px_x;
-	uint32_t size_px_y;
-	uint32_t size_o_y;
-
-	uint32_t * color;
-	uint32_t * layout;
-};
-typedef struct bitmap_rich_32 bitmap_rich_32;
+/** display a pixel from rich bitmap
+*      // TRANSPARENT
+* @param the bitmap
+* @param x coordinate
+* @param y coordinate
+*/
+void bitmap_display_pixel_r(const bitmap_rich * bmp, uint32_t bmp_x, uint32_t bmp_y, uint32_t x, uint32_t y);
 
 
-/* bitmap_get_color_<type>(int x, int y)
-   returns a color coded in 2 bytes
-   byte 7 -> layout (visible, invisible)
-   byte 6 -> color (N || B) */
 
-inline uint8_t bitmap_get_color_8(const bitmap_rich_8 * bmp,uint32_t x, uint32_t y);
-inline uint8_t bitmap_get_color_16(const bitmap_rich_16 * bmp,uint32_t x, uint32_t y);
-inline uint8_t bitmap_get_color_32(const bitmap_rich_32 * bmp,uint32_t x, uint32_t y);
\ No newline at end of file
diff --git a/libfxengine.a b/libfxengine.a
index bc44935..259779f 100644
Binary files a/libfxengine.a and b/libfxengine.a differ
diff --git a/src/render/bitmap.c b/src/render/bitmap.c
index 8fb688a..f953449 100644
--- a/src/render/bitmap.c
+++ b/src/render/bitmap.c
@@ -1,28 +1,22 @@
-#include <bitmap.h>
+#include <gint/display.h>
+#include <render/bitmap.h>
 
-inline uint8_t bitmap_get_color_8(const bitmap_rich_8 * bmp, uint32_t x, uint32_t y)
+inline uint8_t bitmap_get_pixel_r(const bitmap_rich * bmp, uint32_t x, uint32_t y)
 {
-	if (x >= bmp->size_px_x || y >= bmp->size_px_y)
-	const uint32_t indice = y * bmp.size_o_y + x >> 3;
-	const uint32_t numero_bit = 7 - x % 8;
+    if (x >= bmp->size_px_x || y >= bmp->size_px_y)
+        return 0;
 
-	return  ( bmp.layout[indice] | 1 << numero_bit ) << 1 + ( bmp.color[indice] | 1 << numero_bit );
+    const uint32_t indice = y * bmp->size_o_y + x >> 5;
+
+    const uint32_t numero_bit = 31 - x % 32;
+
+    return  ( bmp->layout[indice] | 1 << numero_bit ) << 1 + ( bmp->color[indice] | 1 << numero_bit );
 }
 
-inline uint8_t bitmap_get_color_16(const bitmap_rich_16 * bmp, uint32_t x, uint32_t y)
-{
-	if (x >= bmp->size_px_x || y >= bmp->size_px_y)
-	const uint32_t indice = y * bmp.size_o_y + x >> 4;
-	const uint32_t numero_bit = 15 - x % 16;
 
-	return  ( bmp.layout[indice] | 1 << numero_bit ) << 1 + ( bmp.color[indice] | 1 << numero_bit );
+void bitmap_display_pixel_r(const bitmap_rich * bmp, uint32_t bmp_x, uint32_t bmp_y, uint32_t x, uint32_t y)
+{
+    uint8_t color = bitmap_get_pixel_r(bmp, bmp_x, bmp_y);
+    if (color >> 1)
+        dpixel(x, y, 3 * (color % 2));
 }
-
-inline uint8_t bitmap_get_color_32(const bitmap_rich_32 * bmp, uint32_t x, uint32_t y)
-{
-	if (x >= bmp->size_px_x || y >= bmp->size_px_y)
-	const uint32_t indice = y * bmp.size_o_y + x >> 5;
-	const uint32_t numero_bit = 31 - x % 32;
-
-	return  ( bmp.layout[indice] | 1 << numero_bit ) << 1 + ( bmp.color[indice] | 1 << numero_bit );
-}
\ No newline at end of file