Fix input default values on cmlib definitions (#1369)

Fix so that cmlib inputs have default values, otherwise validate() will fail.

Author: kwokcb

libraries/cmlib/cmlib_defs.mtlx

@@ -8,82 +8,82 @@
   -->
 
   <nodedef name="ND_g18_rec709_to_lin_rec709_color3" node="g18_rec709_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_g18_rec709_to_lin_rec709_color4" node="g18_rec709_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>
 
   <nodedef name="ND_g22_rec709_to_lin_rec709_color3" node="g22_rec709_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_g22_rec709_to_lin_rec709_color4" node="g22_rec709_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>
 
   <nodedef name="ND_rec709_display_to_lin_rec709_color3" node="rec709_display_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_rec709_display_to_lin_rec709_color4" node="rec709_display_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>
 
   <nodedef name="ND_acescg_to_lin_rec709_color3" node="acescg_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_acescg_to_lin_rec709_color4" node="acescg_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>
 
   <nodedef name="ND_g22_ap1_to_lin_rec709_color3" node="g22_ap1_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_g22_ap1_to_lin_rec709_color4" node="g22_ap1_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>
 
   <nodedef name="ND_srgb_texture_to_lin_rec709_color3" node="srgb_texture_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_srgb_texture_to_lin_rec709_color4" node="srgb_texture_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>
 
   <nodedef name="ND_lin_adobergb_to_lin_rec709_color3" node="lin_adobergb_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_lin_adobergb_to_lin_rec709_color4" node="lin_adobergb_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>
 
   <nodedef name="ND_adobergb_to_lin_rec709_color3" node="adobergb_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color3" />
+    <input name="in" type="color3" value="0.0, 0.0, 0.0" />
     <output name="out" type="color3" />
   </nodedef>
 
   <nodedef name="ND_adobergb_to_lin_rec709_color4" node="adobergb_to_lin_rec709" nodegroup="colortransform">
-    <input name="in" type="color4" />
+    <input name="in" type="color4" value="0.0, 0.0, 0.0, 1.0" />
     <output name="out" type="color4" />
   </nodedef>