Shader
Assign a RetroArch shader to the selected content, using every compatible .frag shader file found in the shader directory on your device.
Press A to apply the highlighted shader to this piece of content only, X to apply it to every item in the current directory, or Y to apply it recursively to the current directory and everything below it.
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Quick Tips
If no compatible shaders are found on your device, this screen will let you know that none are available.