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Add VRay gamma attributes to all 8 bit file nodes

/ Published in: Python
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A function that adds gamma attribs to the image files that are 8 bit in nature (aka not EXR or HDR) so that you can get to a linear workflow easily

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  1. def vrayAddGamma():
  2. 	import maya.cmds as cmds	
  3. 	import maya.mel as mel
  4. 	import time, os
  5. 	allFileNodes = cmds.ls(type='file') # look for file nodes
  6. 	nonFloatFiles = []
  7. 	for curFile in allFileNodes:
  8.  
  9. 		cmds.setAttr (curFile + '.filterType', 0) # turn off the damned filtering
  10. 		fileName = cmds.getAttr(curFile + '.fileTextureName') # get the filename
  11. 		if fileName != '': # test for stupid user
  12. 			#print fileName
  13. 			fileExt = os.path.splitext(fileName)[1].lower()[1:] # get the extention
  14. 			#fileExt = fileExt.lower()[1:]
  15. 			#print fileExt
  16. 			if fileExt != 'exr' or fileExt != '.hdr': # test for hdr and exr
  17. 				nonFloatFiles.append(curFile)
  18. 				mel.eval('vray addAttributesFromGroup ' + curFile + ' vray_file_gamma 1') # add the proper vray stuff to the attribs
  19. 	time.sleep(5) # have to sleep because maya is a pain in the asssssssssss!!!
  20. 	allFileNodes = cmds.ls(type='file') # look for file nodes
  21. 	for curFile in nonFloatFiles:
  22. 		if cmds.objExists(curFile + '.vrayFileGammaEnable'):
  23. 			cmds.setAttr (curFile + '.vrayFileGammaEnable', 1) # make sure the gamma correction is enabled
  24. 			cmds.setAttr (curFile + '.vrayFileColorSpace', 2) # set it to sRGB
  25. 		else :
  26. 			print 'The attribute for VRay is not found in %s' % curFile		
  27.  
  28. vrayAddGamma()

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