Nullable fixes, use Texture2d resource for rendering directly.

DaggerFramework/Source/Rendering/Renderer.cs

@@ -79,13 +79,6 @@ namespace DaggerFramework.Rendering
         /// <param name="color">Background color.</param>
         public abstract void ClearBackground(Color color);
 
-        /// <summary>
-        /// Loads the texture onto the GPU for later use in DrawTexture or other Texture related methods.
-        /// </summary>
-        /// <param name="texture">Texture to load.</param>
-        /// <returns>A texture handler on the GPU.</returns>
-        public abstract int LoadTexture(Texture2d texture);
-
         /// <summary>
         /// Sets transforms for the next draw operation.
         /// </summary>
@@ -131,9 +124,9 @@ namespace DaggerFramework.Rendering
         /// <summary>
         /// Draws the texture.
         /// </summary>
-        /// <param name="id">Texture handle.</param>
+        /// <param name="id">Texture to draw.</param>
         /// <param name="tint">Texture tint.</param>
-        public abstract void DrawTexture(int id, Color tint);
+        public abstract void DrawTexture(Texture2d texture, Color tint);
     }
 
     public enum Msaa