Is there any option on save/output to prefer ascii vs binary when saving to the .usd extension?
I could see advantages in saving to .usd as opposed to .usda to avoid hard-linking asset path file formats, but I've been finding that Houdini hasn't exposed any options for this?
Does anyone have any alternate strategies to deal with this?
Thanks!
USD File Extensions and Saving
1972 2 1- draymond
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- mtucker
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You can tell the USD library to write a .usd file in ASCII format using "sdf format arguments" appended to the file name. So if you set a USD ROP to output "$HIP/foo.usd:SDF_FORMAT_ARGS:format=usda", foo.usd will be written in ASCII format. The Component Output LOP I believe uses this approach (appending the ":SDF_FORMAT_ARGS:format=usda" to the user-specified output file path).
- draymond
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That works. I've gone and included it within an output processor to fit my "default" behaviour needs, and included it here if anyone else finds a need for it.
import hou import husd.outputprocessor as base from pxr import Sdf import pathlib class UsdFormatOutputProcessor(base.OutputProcessor): def __init__(self): super().__init__() @staticmethod def name(): return 'usdformat' @staticmethod def displayName(): return '.USD Format' @staticmethod def parameters(): group = hou.ParmTemplateGroup() group.append(hou.StringParmTemplate("format", "Format", 1)) return group.asDialogScript() def beginSave(self, config_node, config_overrides, lop_node, t): super().beginSave(config_node, config_overrides, lop_node, t) self.format = config_node.parm("format").evalAsString() def processSavePath(self, asset_path, referencing_layer_path, asset_is_layer): obj = pathlib.Path(asset_path) if asset_is_layer and obj.suffix == ".usd": asset_path = Sdf.Layer.CreateIdentifier(str(obj), {"format": self.format}) print(".USD Format:", asset_path) return asset_path return asset_path ################################################################################ # In order to be considered for output processing, this python module # implements the function that returns a processor object. # def usdOutputProcessor(): return UsdFormatOutputProcessor
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