Texture dumping broken when texture upscaling is enabled

[hrydgard]

As it says on the tin, the math goes wrong. Should be a pretty simple fix.

[unknownbrackets]

Originally, it definitely did work, and it could be used to save upscaled textures to reduce CPU usage (i.e. to save the upscaled textures.) Maybe this is only when GPU upscaling is used? Or in all cases?

-[Unknown]

[hrydgard]

tbh I only tested on top of #15487 , but did seem broken in both cases. Ran out of time to look into it today but will soon. Getting it to work with GPU upscaling might be too hard.

[unknownbrackets]

Right, there's already code to save the original size when using a shader for upscaling. Both paths seem to be working on Windows with Vulkan.

-[Unknown]

[hrydgard]

Gonna close this, doesn't seem to be an issue.