Cycles UI Improvements for 1.4

Changes.md

@@ -10,6 +10,11 @@ Improvements
 -----------
 
 - Arnold : If it exists, an `ai:volume` attribute is preferred over an `ai:surface` attribute when resolving shaders for volumes.
+- Cycles :
+  - Updated the UI of Cycles shaders and lights for ease of use and to match Blender conventions.
+  - Hide certain parameters based on UI selections.
+  - Renamed and reordered parameters and created sections to match Blender.
+  - Changed all the Cycles items in the Gaffer tab menu to title case.
 
 Fixes
 -----

python/GafferCyclesUI/ShaderMenu.py

@@ -50,10 +50,14 @@ def appendShaders( menuDefinition, prefix="/Cycles" ) :
 	# Build a list of menu items we want to create.
 
 	menuItems = []
+	original = [ "Hsv", "Rgb", "Xyz", "Bw", " To ", "Aov", "Uvmap", "Ies", "Bsdf", "Non Uniform" ]
+	replacement = [ "HSV", "RGB", "XYZ", "BW", " to ", "AOV", "UV Map", "IES", "BSDF", "Nonuniform" ]
 
 	for shader in GafferCycles.shaders :
 		shaderName = str( shader )
 		displayName = " ".join( [ IECore.CamelCase.toSpaced( x ) for x in shaderName.split( "_" ) ] )
+		for x, y in zip( original, replacement ) :
+			displayName = displayName.replace( x, y )
 		category = GafferCycles.shaders[shader]["category"]
 		menuPath = "Shader"
 
@@ -72,7 +76,7 @@ def appendShaders( menuDefinition, prefix="/Cycles" ) :
 		nodeCreator = functools.partial( __lightCreator, lightName, GafferCycles.CyclesLight )
 		menuItems.append( MenuItem( "%s/%s" % ( menuPath, displayName ), nodeCreator ) )
 
-	menuItems.append( MenuItem( "%s/%s" % ( "Light", "MeshLight" ), GafferCycles.CyclesMeshLight ) )
+	menuItems.append( MenuItem( "%s/%s" % ( "Light", "Mesh Light" ), GafferCycles.CyclesMeshLight ) )
 
 	# Create the actual menu items.
 

startup/GafferCycles/principledBSDFCompatibility.py

@@ -77,7 +77,3 @@ def getItem( self, key ) :
 	return getItem
 
 GafferCycles.CyclesShader.__getitem__ = __cyclesShaderGetItem( GafferCycles.CyclesShader.__getitem__ )
-
-# The parameter defaults advertised by Cycles do not always match the actual defaults used by Blender.
-# Register user defaults with Blender's values where it makes sense.
-Gaffer.Metadata.registerValue( "cycles:surface:principled_bsdf:specular_ior_level", "userDefault", 0.5 )

startup/GafferCycles/userDefaults.py

@@ -35,10 +35,3 @@
 ##########################################################################
 
 import Gaffer
-
-# Correction for Blender's Z-up default mapping.
-
-Gaffer.Metadata.registerValue( "cycles:surface:environment_texture:tex_mapping__scale.x", "userDefault", -1.0 )
-Gaffer.Metadata.registerValue( "cycles:surface:environment_texture:tex_mapping__y_mapping", "userDefault", "z" )
-Gaffer.Metadata.registerValue( "cycles:surface:environment_texture:tex_mapping__z_mapping", "userDefault", "y" )
-