diff --git a/sources/PPU/Background.cpp b/sources/PPU/Background.cpp
index bc2131e..07285e6 100644
--- a/sources/PPU/Background.cpp
+++ b/sources/PPU/Background.cpp
@@ -57,15 +57,8 @@ namespace ComSquare::PPU
 		}
 	}
 
-	void Background::_drawBgTile(uint16_t data, Vector2<int> pos)
+	void Background::_drawTileFromMemoryToTileBuffer(const Utils::TileData &tileData)
 	{
-		union Utils::TileMapData tileData;
-
-		tileData.raw = data;
-
-		if (tileData.tilePriority != this->_priority)
-			return;
-
 		uint16_t graphicAddress;
 		Vector2i tileOffset = {0, 0};
 		// X horizontal
@@ -84,6 +77,17 @@ namespace ComSquare::PPU
 			tileOffset.x = 0;
 			tileOffset.y++;
 		}
+	}
+
+	void Background::_drawTile(uint16_t data, Vector2<int> pos)
+	{
+		union Utils::TileData tileData;
+
+		tileData.raw = data;
+
+		//if (tileData.tilePriority != this->_priority)
+		//	return;
+		this->_drawTileFromMemoryToTileBuffer(tileData);
 
 		// todo check why i need to invert vertical and horizontal flips
 		if (tileData.verticalFlip)
@@ -107,8 +111,8 @@ namespace ComSquare::PPU
 			// TODO function to read 2 bytes (LSB order or bits reversed)
 			tileMapValue = this->_vram->read(vramAddress);
 			tileMapValue += this->_vram->read(vramAddress + 1) << 8U;
-			_drawBgTile(tileMapValue, {(pos.x * this->_characterNbPixels.x) + offset.x,
-			                           (pos.y * this->_characterNbPixels.y) + offset.y});
+			this->_drawTile(tileMapValue, {(pos.x * this->_characterNbPixels.x) + offset.x,
+			                               (pos.y * this->_characterNbPixels.y) + offset.y});
 			vramAddress += 2;
 			if (pos.x % 31 == 0 && pos.x) {
 				pos.y++;
@@ -162,4 +166,9 @@ namespace ComSquare::PPU
 	{
 		return this->_priority;
 	}
+
+	bool Background::isPriorityPixel(int y, int x) const
+	{
+		return this->tilesPriority[y / this->_characterNbPixels.y][x / this->_characterNbPixels.x];
+	}
 }
\ No newline at end of file
diff --git a/sources/PPU/Background.hpp b/sources/PPU/Background.hpp
index 11e7246..175efe2 100644
--- a/sources/PPU/Background.hpp
+++ b/sources/PPU/Background.hpp
@@ -11,6 +11,7 @@
 #include "TileRenderer.hpp"
 #include "../Ram/Ram.hpp"
 #include "PPU.hpp"
+#include "PPUUtils.hpp"
 
 namespace ComSquare::PPU
 {
@@ -33,7 +34,7 @@ namespace ComSquare::PPU
 		//! @brief The tilemap configuration nb of tileMap vertically and horizontally
 		//! @note members are set to true if the tilemap is expended in their direction
 		Vector2<bool> _tileMapMirroring;
-		//! @brief The number of pixels of a character (x: width, y:height)
+		//! @brief The number of pixels of a character (x: height, y:width)
 		Vector2<int> _characterNbPixels;
 		//! @brief The number of bits per pixels to currently look for each pixel
 		int _bpp;
@@ -59,7 +60,9 @@ namespace ComSquare::PPU
 		//! @brief The access to cgram
 		std::shared_ptr<Ram::Ram> _cgram;
 		//! @brief Draw a tile on the screen at x y pos
-		void _drawBgTile(uint16_t data, Vector2<int> pos);
+		void _drawTile(uint16_t data, Vector2<int> pos);
+		//! @brief Draw the tile to the tile Buffer
+		void _drawTileFromMemoryToTileBuffer(const union Utils::TileData &tileData);
 		//! @brief draw a tileMap 32x32 starting at baseAddress
 		//! @param baseAddress The starting address of the tileMap
 		//! @param offset The rendering offeset in pixels
@@ -70,6 +73,10 @@ namespace ComSquare::PPU
 		//! @brief The output buffer (pixels are written on it)
 		std::array<std::array<uint32_t, 1024>, 1024> buffer;
 
+		std::array<std::array<bool, 64>, 64> tilesPriority;
+
+		bool isPriorityPixel(int x, int y) const;
+
 		//! @brief Render a background on his internal buffer
 		void renderBackground();
 		//! @brief Set the tileMap start address
diff --git a/sources/PPU/PPU.cpp b/sources/PPU/PPU.cpp
index a0e58c8..89c6325 100644
--- a/sources/PPU/PPU.cpp
+++ b/sources/PPU/PPU.cpp
@@ -36,7 +36,7 @@ namespace ComSquare::PPU
 	{
 		this->_registers._isLowByte = true;
 
-		//Utils::Debug::populateEnvironment(*this, 0);
+		Utils::Debug::populateEnvironment(*this, 1);
 	}
 
 	uint8_t PPU::read(uint24_t addr)
diff --git a/sources/PPU/PPUUtils.hpp b/sources/PPU/PPUUtils.hpp
index 106f350..4faa8c2 100644
--- a/sources/PPU/PPUUtils.hpp
+++ b/sources/PPU/PPUUtils.hpp
@@ -22,7 +22,7 @@ namespace ComSquare::PPU::Utils
 	//! @brief Transform SNES color code BGR to uint32_t RGB
 	uint32_t getRealColor(uint16_t color);
 	//! @brief Used to parse easily VRAM Tile information
-	union TileMapData {
+	union TileData {
 		struct {
 			//! @brief Tile X offset
 			uint16_t posX: 4;