eden/docs/User.md

User configuration

Configuration directories

Eden will store configuration in the following directories:

• Windows: %AppData%\Roaming.
• Android: Data is stored internally.
• Linux, macOS, FreeBSD, Solaris, OpenBSD: $XDG_DATA_HOME, $XDG_CACHE_HOME, $XDG_CONFIG_HOME.

If a user directory is present in the current working directory, that will override all global configuration directories and the emulator will use that instead.

Enhancements

Filters

Various graphical filters exist - each of them aimed at a specific target/image quality preset.

• Nearest: Provides no filtering - useful for debugging.
• Bilinear: Provides the hardware default filtering of the Tegra X1.
• Bicubic: Provides a bicubic interpolation using a Catmull-Rom (or hardware-accelerated) implementation.
• Zero-Tangent, B-Spline, Mitchell: Provides bicubic interpolation using the respective matrix weights. They're normally not hardware accelerated unless the device supports the VK_QCOM_filter_cubic_weights extension. The matrix weights are those matching the specification itself.
• Spline-1: Bicubic interpolation (similar to Mitchell) but with a faster texel fetch method. Generally less blurry than bicubic.
• Gaussian: Whole-area blur, an applied gaussian blur is done to the entire frame.
• Lanczos: An implementation using a = 3 (49 texel fetches). Provides sharper edges but blurrier artifacts.
• ScaleForce: Experimental texture upscale method, see ScaleFish.
• FSR: Uses AMD FidelityFX Super Resolution to enhance image quality.
• Area: Area interpolation (high kernel count).
• MMPX: Nearest-neighbour filter aimed at providing higher pixel-art quality.