PaaPhotoshopPlugin is a Photoshop File Format Plugin for opening and saving Arma PAA images in Photoshop. For more information on the Arma PAA file format check out the public PAA file format specification.

• Download the latest PaaFormat.8bi from https://github.com/gruppe-adler/PaaPhotoshopPlugin/releases.
• Move the PaaFormat.8bi into <Photoshop Installation Directory>\Plug-ins\.

• Open, Open As menu commands can be used to read *.paa files.
• Save, Save As menu commands can be used to write *.paa files.

• As per the PAA file format specification only images where the height and width is a power of 2 (2^n) are supported.
• Only the "RGB Color" image mode is currently support.
• Only the DXT1/DXT5 PAA Formats are currently supported.

• Adobe Photoshop SDK
• grad_aff

• Download and unpack the latest Adobe Photoshop SDK
• git clone this repository into adobe_photoshop_sdk_[version]/pluginsdk/samplecode/format
• Build and install grad_aff
• Set the environment variables GRAD_AFF and GRAD_AFF_DEBUG to the directory where you installed grad_aff
• Set the environment variable PS_DIR to your Adobe Photoshop installation directory
• Open the PaaFormat.sln with Microsoft Visual Studio 2019 or later and build the solution