Micro-Gaps in banner tile display

[SheepishShepherd]

When adjusting the UI scale, drawings that have to be pieced together will contain very small gaps between each drawn tile. This is undesirable, as all users should see the same thing no matter what UI scale they decide to have. From testing out some fixes I noticed that it seems to be an issue with the sourceRectangle as when I increased the drawing source to include the transparent parts, the pixels into the next banner starts to bleed into the drawing.