Drawing a cube with Rlgl using 2 textures

CubeTexture1.cs

using System.Numerics;
using Raylib_cs;

namespace Testing
{
    public class CubeTexture1
    {
        // Draw cube with multiple textures for different faces
        // NOTE: Cube position is the center position
        static void DrawCubeCustom(Texture2D texture1, Texture2D texture2, Vector3 position, float width, float height, float length, Color color)
        {
            float x = position.X;
            float y = position.Y;
            float z = position.Z;

            if (Rlgl.rlCheckBufferLimit(36))
            {
                Rlgl.rlglDraw();
            }

            Rlgl.rlBegin(Rlgl.RL_QUADS);
            Rlgl.rlColor4ub(color.r, color.g, color.b, color.a);

            // NOTE: Enable texture 1 for Front, Back
            Rlgl.rlEnableTexture(texture1.id);

            // Front Face
            // Normal Pointing Towards Viewer
            Rlgl.rlNormal3f(0.0f, 0.0f, 1.0f);

            // Bottom Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 0.0f);
            Rlgl.rlVertex3f(x - width / 2, y - height / 2, z + length / 2);

            // Bottom Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 0.0f);
            Rlgl.rlVertex3f(x + width / 2, y - height / 2, z + length / 2);

            // Top Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 1.0f);
            Rlgl.rlVertex3f(x + width / 2, y + height / 2, z + length / 2);

            // Top Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 1.0f);
            Rlgl.rlVertex3f(x - width / 2, y + height / 2, z + length / 2);

            // Back Face
            // Normal Pointing Away From Viewer
            Rlgl.rlNormal3f(0.0f, 0.0f, -1.0f);

            // Bottom Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 0.0f);
            Rlgl.rlVertex3f(x - width / 2, y - height / 2, z - length / 2);

            // Top Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 1.0f);
            Rlgl.rlVertex3f(x - width / 2, y + height / 2, z - length / 2);

            // Top Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 1.0f);
            Rlgl.rlVertex3f(x + width / 2, y + height / 2, z - length / 2);

            // Bottom Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 0.0f);
            Rlgl.rlVertex3f(x + width / 2, y - height / 2, z - length / 2);

            // NOTE: Enable texture 2 for Top, Bottom, Left and Right
            Rlgl.rlEnableTexture(texture2.id);

            // Top Face
            // Normal Pointing Up
            Rlgl.rlNormal3f(0.0f, 1.0f, 0.0f);

            // Top Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 1.0f);
            Rlgl.rlVertex3f(x - width / 2, y + height / 2, z - length / 2);

            // Bottom Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 0.0f);
            Rlgl.rlVertex3f(x - width / 2, y + height / 2, z + length / 2);

            // Bottom Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 0.0f);
            Rlgl.rlVertex3f(x + width / 2, y + height / 2, z + length / 2);

            // Top Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 1.0f);
            Rlgl.rlVertex3f(x + width / 2, y + height / 2, z - length / 2);

            // Bottom Face
            // Normal Pointing Down
            Rlgl.rlNormal3f(0.0f, -1.0f, 0.0f);

            // Top Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 1.0f);
            Rlgl.rlVertex3f(x - width / 2, y - height / 2, z - length / 2);

            // Top Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 1.0f);
            Rlgl.rlVertex3f(x + width / 2, y - height / 2, z - length / 2);

            // Bottom Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 0.0f);
            Rlgl.rlVertex3f(x + width / 2, y - height / 2, z + length / 2);

            // Bottom Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 0.0f);
            Rlgl.rlVertex3f(x - width / 2, y - height / 2, z + length / 2);

            // Right face
            // Normal Pointing Right
            Rlgl.rlNormal3f(1.0f, 0.0f, 0.0f);

            // Bottom Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 0.0f);
            Rlgl.rlVertex3f(x + width / 2, y - height / 2, z - length / 2);

            // Top Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 1.0f);
            Rlgl.rlVertex3f(x + width / 2, y + height / 2, z - length / 2);

            // Top Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 1.0f);
            Rlgl.rlVertex3f(x + width / 2, y + height / 2, z + length / 2);

            // Bottom Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 0.0f);
            Rlgl.rlVertex3f(x + width / 2, y - height / 2, z + length / 2);

            // Left Face
            // Normal Pointing Left
            Rlgl.rlNormal3f(-1.0f, 0.0f, 0.0f);

            // Bottom Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 0.0f);
            Rlgl.rlVertex3f(x - width / 2, y - height / 2, z - length / 2);

            // Bottom Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 0.0f);
            Rlgl.rlVertex3f(x - width / 2, y - height / 2, z + length / 2);

            // Top Right Of The Texture and Quad
            Rlgl.rlTexCoord2f(1.0f, 1.0f);
            Rlgl.rlVertex3f(x - width / 2, y + height / 2, z + length / 2);

            // Top Left Of The Texture and Quad
            Rlgl.rlTexCoord2f(0.0f, 1.0f);
            Rlgl.rlVertex3f(x - width / 2, y + height / 2, z - length / 2);
            Rlgl.rlEnd();

            Rlgl.rlDisableTexture();
        }

        public static int Main()
        {
            // Initialization
            //--------------------------------------------------------------------------------------
            Raylib.SetConfigFlags(ConfigFlag.FLAG_MSAA_4X_HINT);
            Raylib.InitWindow(800, 450, "CubemapTexture1");

            // Define the camera to look into our 3d world
            Camera3D camera = new Camera3D
            {
                position = new Vector3(10.0f, 10.0f, 10.0f),
                target = new Vector3(0.0f, 0.0f, 0.0f),
                up = new Vector3(0.0f, 1.0f, 0.0f),
                fovy = 45.0f,
                type = CameraType.CAMERA_PERSPECTIVE,
            };

            Vector3 cubePosition = new Vector3(0.0f, 0.0f, 0.0f);
            Texture2D texture1 = Raylib.LoadTexture("data/container2.png");
            Texture2D texture2 = Raylib.LoadTexture("data/awesomeface.png");

            Raylib.SetCameraMode(camera, CameraMode.CAMERA_ORBITAL); // Set a free camera mode

            Raylib.SetTargetFPS(60); // Set our game to run at 60 frames-per-second
            //--------------------------------------------------------------------------------------

            // Main game loop
            while (!Raylib.WindowShouldClose()) // Detect window close button or ESC key
            {
                // Update
                //----------------------------------------------------------------------------------
                Raylib.UpdateCamera(ref camera); // Update camera
                //----------------------------------------------------------------------------------

                // Draw
                //----------------------------------------------------------------------------------
                Raylib.BeginDrawing();
                Raylib.ClearBackground(new Color(51, 76, 76, 255));

                Raylib.BeginMode3D(camera);

                DrawCubeCustom(texture1, texture2, cubePosition, 2.0f, 2.0f, 2.0f, Color.WHITE);
                Raylib.DrawGrid(10, 1.0f);

                Raylib.EndMode3D();

                Raylib.EndDrawing();
                //----------------------------------------------------------------------------------
            }

            // De-Initialization
            //--------------------------------------------------------------------------------------
            Raylib.UnloadTexture(texture1);
            Raylib.UnloadTexture(texture2);
            Raylib.CloseWindow(); // Close window and OpenGL context
            //--------------------------------------------------------------------------------------

            return 0;
        }
    }
}