Translations:AV:RetroTINK-4K/214/en

• Custom CRT Masks must be saved as 32-bit .BMP files.
• The maximum dimensions of a CRT Mask image is 16 x 16 pixels. They can be smaller, which will result in denser tiling of the mask across the screen.
• A color value of 128 will be neutral, while 0 will completely black out the corresponding pixel. 255 will double the input value (although this will be clamped).
• Custom CRT Mask images should be stored in the "mask" folder on the SD card.

CRT masks will NOT adhere to the pixel grid like the RT4K's scanlines will. If you want them to adhere to the pixel grid, you'll need to have your shadow mask image match the dimensions of a single upscaled pixel, but this will vary depending on many factors, and so should be paired with a specific Profile you have in mind. Since Mask images have a maximum size of 16x16 pixels, this inherently means that the upscaled pixels of the input image cannot exceed 16x16 pixels in RT4K's output resolution.