Incorrect blitting?

[edeetee]

I think something is happening with blitting or texture sampling

• Using a nonstandard aspect ratio puts the image in the wrong alignment
• Changing the composition size in resolume messes with the texture positioning
• Scaling up an image seems to swing left and right as it moves through the pixel scales. Maybe this can be properly centered?
• There seems to always be a tiny empty bar of pixels at the bottom of the view