Oh, I think I can tell what the bug is by looking at the photo. It looks like we're using a bad (doubled) stride value. That will make the cursor vertically squished and render rubbish under it. Because a doubled stride will run out of data only halfway down the image.
Oh, I think I can tell what the bug is by looking at the photo. It looks like we're using a bad (doubled) stride value. That will make the cursor vertically squished and render rubbish under it. Because a doubled stride will run out of data only halfway down the image.