Fix using RenderTargets on a texture that has mipmaps.

Also better mipmap generation.

include/JGL/types/RenderTarget.h

@@ -35,8 +35,9 @@ public:
     /// @param new_size new size in px.
     void Resize(const Vector2& new_size);
     void SetMSAAEnabled(MSAA_SAMPLE_RATE sample_rate);
-    /// Blits the MSAA FBO onto the regular FBO if MSAA is enabled.
-    /// Does nothing is MSAA is not enabled or if the color attachment is a texture not created by the RenderTarget.
+    /// If you're using raw OpenGL commands to draw to this outside of J2D or J3D don't forget to do this.
+    /// Blits the MSAA FBO onto the regular FBO if MSAA is enabled and or If you're rendering to a texture which uses mipmaps,
+    /// It regenerates them so what you drew doesn't disappear at a distance. Otherwise it does nothing.
     void Blit() const;
     [[nodiscard]] bool TextureCreatedByRenderTarget() const;
 public: