Created attachment 14 [details] Example of the large bars There is a custom modification of Cave Story, where DXGL showed major GFX issues. Strange large bars of color cover various areas of the screen and change as you move. http://www.host-a.net/u/X-Calibar/King_-_Strife_and_Sacrifice_0105.zip Here's the freeware game engine modification. (1 MB) While running DXGL, even in the intro, you will see the issue. And if you load game, and go through the door to the outside (press down), you will immediately see major problems as you move around. Disable DXGL to see how it should look without the issue.
Bug confirmed.