Clean scaling graphics with high pixel density

[Nash]

I want to draw a fullscreen graphic with a higher pixel density fill up the screen with clean scaling. Please see image. Currently with DTA_CleanNoMove, if I attempt to draw the bigger image, the image will just be blown up and be scaled bigger beyond the current screen borders.

I want it to cleanly scale the graphic, like in the example at the right-most. How do I do this?

[Graf Zahl]

You say 'fullscreen' but then post non-fullscreen images as an example. What precisely do you want?

[Nash]

The image in the OP is a mockup of what a full screen 1920x1080 would look like. I thought I labeled everything clearly already. I want to clean scale a high resolution graphic. Let's say I am authoring graphics assets that target a 640x400 canvas instead of 320x200.

[Nash]

Hopefully these images describe my problem better. Look closely at the character picture in the bottom image. It's in a higher resolution.

I want to draw the graphic with clean scaling and positioning (DTA_CleanNoMove, and also using the CleanX/Yfac variables for positioning).

I want it framed exactly like in the first image. What I'm trying to achieve here is drawing a clean scaled graphic at double density.