...

{
    "pattern": {
        "args": {
            "texture_type": "regular",
            "smode": "periodic",
            "tmode": "periodic",
            "texture_format": "pixar",
            "texture_filter": "catmull-rom",
            "resize": "up-",
            "data_type": null,
            "compression": "lossless",
            "compression_level": null
        },
        "rules": {
            "'_i8t' in '%(img_name)s'": {
                "args": {
                    "texture_format": "tiff",
                    "data_type": "byte"
                }
            }
		}
	}
}

Category

HereIn the example above, the category is pattern, but there are other pre-defined categories: light, lightfilter and imageplane.

args

This section is a dictionary representing default txmake parameter values for the current category. The key names (texture_type, smode, tmode, etc) are coming from the TxParams class of the txmanager python module.

...

... matches "_i8t" in the image name, which is here interpreted as shorthand for "8 bits integer tiff format" and sets the texture format to "tiff" and the image to "byte" (8 bits integer, see txmake documentation). For example, a file named "roof_top_diffColor_i8t_v01v06.png" would match that rule.

...