diff --git a/RT b/RT
deleted file mode 100644
index 6b7d682..0000000
Binary files a/RT and /dev/null differ
diff --git a/includes/RT/Window.hpp b/includes/RT/Window.hpp
index 6a0e23f..d6392e1 100644
--- a/includes/RT/Window.hpp
+++ b/includes/RT/Window.hpp
@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/13 16:15:41 by TheRed            #+#    #+#             */
-/*   Updated: 2024/12/23 18:35:35 by ycontre          ###   ########.fr       */
+/*   Updated: 2025/01/11 16:14:11 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -37,8 +37,7 @@ class Window
 		float		getFps(void) const;
 		int			getFrameCount(void) const;
 
-		int			&getPixelisationAmount(void);
-		int			isPixelated(void);
+		int			getPixelisation(void);
 
 		bool		&getAccumulate(void);
 
@@ -49,10 +48,9 @@ class Window
 		float		_fps;
 		float		_delta;
 		int			_frameCount;
+		int			_pixelisation;
 
 		bool		accumulate = true;
-		int			pixelisation_amount = 5;
-
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..117df0c
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,5 @@
+{ pkgs ? import <nixpkgs> {} }:
+  pkgs.mkShell {
+    nativeBuildInputs = with pkgs; [ libGL xorg.libX11 libGLU glfw];
+}
+
diff --git a/srcs/RT.cpp b/srcs/RT.cpp
index b900535..735965c 100644
--- a/srcs/RT.cpp
+++ b/srcs/RT.cpp
@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/09/27 14:51:49 by TheRed            #+#    #+#             */
-/*   Updated: 2025/01/10 19:12:40 by ycontre          ###   ########.fr       */
+/*   Updated: 2025/01/11 16:14:24 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -79,7 +79,7 @@ int main(int argc, char **argv)
 
 		shader.set_int("u_frameCount", window.getFrameCount());
 		shader.set_int("u_objectsNum", object_data.size());
-		shader.set_int("u_pixelisation", window.isPixelated() * window.getPixelisationAmount() + 1);
+		shader.set_int("u_pixelisation", window.getPixelisation());
 		shader.set_float("u_time", (float)(glfwGetTime()));
 		shader.set_vec2("u_resolution", glm::vec2(WIDTH, HEIGHT));
 		
@@ -97,7 +97,6 @@ int main(int argc, char **argv)
 
 		ImGui::Begin("Settings");
 		ImGui::Text("Fps: %d", int(window.getFps()));
-		ImGui::SliderInt("Pixelisation", &window.getPixelisationAmount(), 0, 30);
 		ImGui::Checkbox("Accumulate", &window.getAccumulate());
 		ImGui::End();
 
diff --git a/srcs/class/Window.cpp b/srcs/class/Window.cpp
index f31edeb..345feae 100644
--- a/srcs/class/Window.cpp
+++ b/srcs/class/Window.cpp
@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/13 16:16:24 by TheRed            #+#    #+#             */
-/*   Updated: 2025/01/09 16:34:48 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/01/11 16:13:40 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -16,6 +16,7 @@ Window::Window(Scene *scene, int width, int height, const char *title, int sleep
 {
 	_scene = scene;
 	_frameCount = 0;
+	_pixelisation = 0;
 	
 	if (!glfwInit())
 	{
@@ -54,7 +55,6 @@ Window::~Window(void)
 
 void Window::process_input()
 {
-
 	bool forward = glfwGetKey(_window, GLFW_KEY_W) == GLFW_PRESS;
 	bool backward = glfwGetKey(_window, GLFW_KEY_S) == GLFW_PRESS;
 	bool left = glfwGetKey(_window, GLFW_KEY_A) == GLFW_PRESS;
@@ -166,22 +166,24 @@ int			Window::getFrameCount(void) const
 	return (_frameCount);
 }
 
-int			&Window::getPixelisationAmount(void)
-{
-	return (pixelisation_amount);
-}
-
 bool		&Window::getAccumulate(void)
 {
 	return (accumulate);
 }
 
-int			Window::isPixelated(void)
+int			Window::getPixelisation(void)
 {
 	bool mouse = glfwGetMouseButton(_window, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS;
 	bool movement = _scene->getCamera()->getVelocity() > 0.0f;
 
 	if (mouse || movement)
-		return (1);
-	return (0);
-}
\ No newline at end of file
+	{
+		if(_fps < 60 && _pixelisation < 16)	
+			_pixelisation++;
+		if(_fps > 90 && _pixelisation > 0)
+			_pixelisation--;
+	}
+	else if(_pixelisation)
+		_pixelisation = 0;
+	return (_pixelisation + 1);
+}