Color Depth Filter Plug-Ins

Although RGB and alpha components have a color depth of 8 bits (256 levels) each under Photoshop, they only have a color depth of 1 to 6 bits when using the L4, A4, LA4, RGB565, RGB5_A1 or RGBA4 formats under CTR. Use this filter to apply the color depth corresponding to the format.

How to Use

Select all channels and select Filter > NintendoWare for CTR > NW4C_ColorDepth to open a dialog box.

Select the appropriate format under Format.
L4 and LA4 can be selected only when the image mode is grayscale or all colors used in the image are R = G = B.
A4 can be selected only when the image mode is grayscale or there is an alpha channel.
RGB565, RGB5_A1, and RGBA4 can only be selected when the image mode is RGB color.
Click OK to apply the filter.

Notes

Image Mode

Image mode can only be executed when the image mode is grayscale or RGB color.
Executing on files that use 16 bits per channel is impossible.

Alpha Channel

If an alpha channel is present press SHIFT + CLICK to select all channels, then execute the filter. Execution is impossible if more than one alpha channel exists.

Layers

If there are multiple visible layers, merge them before running the plug-in.
If the image includes only layers and no background and there is no alpha channel, the transparency of pixels is processed as the image's alpha.

Combined Use with Mipmaps

Use the following procedure when creating mipmap images to which a color depth filter has been applied.

  1. Create a mipmap image using the mipmap creation plug-in.
  2. Flatten all layers.
  3. Apply the color depth filter.




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