Material broken after updating from 2019.1.0b3 to 2019.1.0f2

Hi,

I'm running into an issue with my materials when I update my project from 2019.1.0b3 to 2019.1.0f2: they are missing the albedo texture and the color attribute is wrong as well. The materials are using the standard "Lightweight Render Pipeline/Lit" shader.

Spoiler: New .mat file

Code (CSharp):

1. %YAML 1.1
2. %TAG !u! tag:unity3d.com,2011:
3. --- !u!21 &2100000
4. Material:
5.   serializedVersion: 6
6.   m_ObjectHideFlags: 0
7.   m_CorrespondingSourceObject: {fileID: 0}
8.   m_PrefabInstance: {fileID: 0}
9.   m_PrefabAsset: {fileID: 0}
10.   m_Name: acorn_mat
11.   m_Shader: {fileID: 4800000, guid: 933532a4fcc9baf4fa0491de14d08ed7, type: 3}
12.   m_ShaderKeywords:
13.   m_LightmapFlags: 4
14.   m_EnableInstancingVariants: 1
15.   m_DoubleSidedGI: 0
16.   m_CustomRenderQueue: -1
17.   stringTagMap: {}
18.   disabledShaderPasses: []
19.   m_SavedProperties:
20.     serializedVersion: 3
21.     m_TexEnvs:
22.     - _BumpMap:
23.         m_Texture: {fileID: 0}
24.         m_Scale: {x: 1, y: 1}
25.         m_Offset: {x: 0, y: 0}
26.     - _EmissionMap:
27.         m_Texture: {fileID: 0}
28.         m_Scale: {x: 1, y: 1}
29.         m_Offset: {x: 0, y: 0}
30.     - _MainTex:
31.         m_Texture: {fileID: 2800000, guid: bb65d3758d81f9f4eb202e539110dd78, type: 3}
32.         m_Scale: {x: 1, y: 1}
33.         m_Offset: {x: 0, y: 0}
34.     - _MetallicGlossMap:
35.         m_Texture: {fileID: 0}
36.         m_Scale: {x: 1, y: 1}
37.         m_Offset: {x: 0, y: 0}
38.     - _OcclusionMap:
39.         m_Texture: {fileID: 0}
40.         m_Scale: {x: 1, y: 1}
41.         m_Offset: {x: 0, y: 0}
42.     - _SpecGlossMap:
43.         m_Texture: {fileID: 0}
44.         m_Scale: {x: 1, y: 1}
45.         m_Offset: {x: 0, y: 0}
46.     m_Floats:
47.     - _AlphaClip: 0
48.     - _Blend: 0
49.     - _BumpScale: 1
50.     - _Cull: 2
51.     - _Cutoff: 0.5
52.     - _DstBlend: 0
53.     - _EnvironmentReflections: 1
54.     - _GlossMapScale: 1
55.     - _Glossiness: 0.5
56.     - _GlossyReflections: 1
57.     - _Metallic: 0
58.     - _OcclusionStrength: 1
59.     - _QueueOffset: 0
60.     - _ReceiveShadows: 1
61.     - _Smoothness: 0.5
62.     - _SmoothnessTextureChannel: 0
63.     - _SpecularHighlights: 1
64.     - _SrcBlend: 1
65.     - _Surface: 0
66.     - _WorkflowMode: 1
67.     - _ZWrite: 1
68.     m_Colors:
69.     - _BaseColor: {r: 1, g: 1, b: 1, a: 1}
70.     - _Color: {r: 1, g: 1, b: 1, a: 1}
71.     - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
72.     - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}
73.  

Spoiler: Old .mat file

Code (CSharp):

1. %YAML 1.1
2. %TAG !u! tag:unity3d.com,2011:
3. --- !u!21 &2100000
4. Material:
5.   serializedVersion: 6
6.   m_ObjectHideFlags: 0
7.   m_CorrespondingSourceObject: {fileID: 0}
8.   m_PrefabInstance: {fileID: 0}
9.   m_PrefabAsset: {fileID: 0}
10.   m_Name: acorn_mat
11.   m_Shader: {fileID: 4800000, guid: 933532a4fcc9baf4fa0491de14d08ed7, type: 3}
12.   m_ShaderKeywords:
13.   m_LightmapFlags: 4
14.   m_EnableInstancingVariants: 1
15.   m_DoubleSidedGI: 0
16.   m_CustomRenderQueue: 2050
17.   stringTagMap:
18.     RenderType: Opaque
19.   disabledShaderPasses: []
20.   m_SavedProperties:
21.     serializedVersion: 3
22.     m_TexEnvs:
23.     - _BumpMap:
24.         m_Texture: {fileID: 0}
25.         m_Scale: {x: 1, y: 1}
26.         m_Offset: {x: 0, y: 0}
27.     - _EmissionMap:
28.         m_Texture: {fileID: 0}
29.         m_Scale: {x: 1, y: 1}
30.         m_Offset: {x: 0, y: 0}
31.     - _MainTex:
32.         m_Texture: {fileID: 2800000, guid: bb65d3758d81f9f4eb202e539110dd78, type: 3}
33.         m_Scale: {x: 1, y: 1}
34.         m_Offset: {x: 0, y: 0}
35.     - _MetallicGlossMap:
36.         m_Texture: {fileID: 0}
37.         m_Scale: {x: 1, y: 1}
38.         m_Offset: {x: 0, y: 0}
39.     - _OcclusionMap:
40.         m_Texture: {fileID: 0}
41.         m_Scale: {x: 1, y: 1}
42.         m_Offset: {x: 0, y: 0}
43.     - _SpecGlossMap:
44.         m_Texture: {fileID: 0}
45.         m_Scale: {x: 1, y: 1}
46.         m_Offset: {x: 0, y: 0}
47.     m_Floats:
48.     - _AlphaClip: 0
49.     - _Blend: 0
50.     - _BumpScale: 1
51.     - _Cull: 2
52.     - _Cutoff: 0.5
53.     - _DstBlend: 0
54.     - _GlossMapScale: 1
55.     - _Glossiness: 0.5
56.     - _GlossyReflections: 1
57.     - _Metallic: 0
58.     - _OcclusionStrength: 1
59.     - _ReceiveShadows: 1
60.     - _SmoothnessTextureChannel: 0
61.     - _SpecularHighlights: 1
62.     - _SrcBlend: 1
63.     - _Surface: 0
64.     - _WorkflowMode: 1
65.     - _ZWrite: 1
66.     m_Colors:
67.     - _Color: {r: 1, g: 1, b: 1, a: 1}
68.     - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
69.     - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}
70.  

When you compare the old and new materials, these are the new entries while nothing got deleted:

Code (CSharp):

1.  
2.     - _BaseMap:
3.         m_Texture: {fileID: 2800000, guid: bb65d3758d81f9f4eb202e539110dd78, type: 3}
4.         m_Scale: {x: 1, y: 1}
5.         m_Offset: {x: 0, y: 0}
6.     - _EnvironmentReflections: 1
7.     - _QueueOffset: 0
8.     - _Smoothness: 0.5
9.     - _BaseColor: {r: 1, g: 1, b: 1, a: 1}
10.  

It seems the names have just changed and Unity doesn't doesn't convert them? For example, the texture is now part of _BaseMap and before it was part of _MainTex.

Thanks,
Alex

 

I've got this happening too, coming from 2018.3.12 to 2019.1.0f2. Basically, every material in my project is destroyed.

I guess our workaround is to roll back to the old version for now and wait for a bug fix? Thanks for inputting the bug, I voted it up.

 

If it doesn't get resolved soon, I'll create a simple, hacky script to do the conversion offline (assuming ascii material files).

 

Thanks @Andre_Mcgrail , I tried to reimport my materials (LWRP/Lit) but the issue remains. Is there another way to trigger the upgrader?

 

@Andre_Mcgrail , I tried reimport more materials. A bit more happened but it's still not really working:

1) Some materials get fixed (2 out of 50) but the majority is still broken.
2) For some materials I get a debug log (3 out of 50) though they aren't the materials which got fixed.

Code (csharp):

1.  
2. LWRP Material log:
3. football_mat initialized. upgrading:v0 to v1
4. UnityEditor.AssetPostprocessingInternal:PostprocessAllAssets(String[], String[], String[], String[], String[])
5.  

3) Checking the git diff, the upgrader might process all(?) of the materials but doesn't necessarily fix them:

Code (csharp):

1.  
2.      - _MainTex:
3. -        m_Texture: {fileID: 2800000, guid: f31b2ebf9418acd44bd267cff48507f8, type: 3}
4. +        m_Texture: {fileID: 0}
5.  

Here the texture reference got deleted although the texture with the guid f31b2ebf9418acd44bd267cff48507f8 still exists! So be careful when reimporting materials! Luckily I can roll back all those materials.

 

I wrote a simple python script to fix the materials for me. It did the job for me so it might help others but be careful. It's not very pretty, it doesn't create backups and it's not fail safe so use with caution. git is your friend!

- Copy MainTex to BaseMap
- Copy Color to BaseColor
- Add QueueOffset
- Add Smoothness
- Add EnvironmentReflections

Spoiler: conversion script

Code (CSharp):

1.  
2. from __future__ import print_function
3.  
4. import argparse
5. import os
6. import pprint
7. from shutil import copyfile
8. import io
9.  
10.  
11. class MaterialFixer(object):
12.  
13.     def __init__(self):
14.         self._filePaths = []
15.         self._directories = []
16.         self._logProcessedDirectories = set()
17.         self._logInvalidDirectories = set()
18.         self._logInvalidFiles = set()
19.         self._logConvertedFiles = set()
20.         self._logNothingToDoFiles = set()
21.  
22.         self._parseArgs()
23.  
24.     def _parseArgs(self):
25.         parser = argparse.ArgumentParser()
26.         parser.add_argument(
27.             "-d",
28.             "--directory",
29.             nargs='*',
30.             help="Convert all materials in directory")
31.         parser.add_argument(
32.             "-f",
33.             "--file",
34.             nargs='*',
35.             help="Convert given material")
36.         args = parser.parse_args()
37.  
38.         if args.file:
39.             self._filePaths = args.file if isinstance(args.file, list) else [args.file]
40.  
41.         if args.directory:
42.             self._directories = args.directory if isinstance(args.directory, list) else [args.directory]
43.  
44.     def run(self):
45.         for filePath in self._filePaths:
46.             self._convertFile(filePath)
47.  
48.         for directory in self._directories:
49.             self._processDirectory(directory)
50.  
51.         self._printLog()
52.    
53.     def _printLog(self):
54.         print("Processed directories: ")
55.         pprint.pprint(self._logProcessedDirectories)
56.         print("Converted files: ")
57.         pprint.pprint(self._logConvertedFiles)
58.         print("Already converted files: ")
59.         pprint.pprint(self._logNothingToDoFiles)
60.         print("Invalid directories: ")
61.         pprint.pprint(self._logInvalidDirectories)
62.         print("Invalid files: ")
63.         pprint.pprint(self._logInvalidFiles)
64.        
65.     def _processDirectory(self, directory):
66.         if not directory:
67.             return
68.  
69.         if (not os.path.isdir(directory) or
70.            not os.path.exists(directory)):
71.             self._logInvalidDirectories.add(directory)
72.             return
73.  
74.         self._logProcessedDirectories.add(directory)
75.         for root, dirs, files in os.walk(directory):
76.             self._logProcessedDirectories.add(root)
77.             for filename in files:
78.                 if os.path.splitext(filename)[1] == (".mat"):
79.                     materialFile = os.path.join(root, filename)
80.                     self._convertFile(materialFile)
81.  
82.     def _convertFile(self, filePath):
83.         if not filePath:
84.             return
85.  
86.         if not self._isValidFile(filePath):
87.             self._logInvalidFiles.add(filePath)
88.             return
89.  
90.         f = io.open(filePath, 'r', newline='\n')
91.         lines = [line for line in f]
92.         f.close()
93.  
94.         line_count = len(lines)
95.         lines = self._processMainTex(lines)
96.         lines = self._processEnvironmentReflections(lines)
97.         lines = self._processQueueOffset(lines)
98.         lines = self._processSmoothness(lines)
99.         lines = self._processBaseColor(lines)
100.  
101.         if len(lines) != line_count:
102.             self._logConvertedFiles.add(filePath)
103.  
104.             new_f = io.open(filePath, 'w', newline='\n')
105.             new_f.writelines(lines)
106.         else:
107.             self._logNothingToDoFiles.add(filePath)
108.  
109.     def _processMainTex(self, lines):
110.         mainTexIdx = -1
111.         for idx, line in enumerate(lines):
112.             if line.startswith("    - _BaseMap:"):
113.                 return lines
114.  
115.             if line.startswith("    - _MainTex:"):
116.                 mainTexIdx = idx
117.        
118.         if mainTexIdx == -1:
119.             return lines
120.        
121.         texture_entry = lines[mainTexIdx + 1]
122.         scale_entry = lines[mainTexIdx + 2]
123.         offset_entry = lines[mainTexIdx + 3]
124.  
125.         lines.insert(mainTexIdx, offset_entry)
126.         lines.insert(mainTexIdx, scale_entry)
127.         lines.insert(mainTexIdx, texture_entry)
128.         lines.insert(mainTexIdx, u"    - _BaseMap:\n")
129.  
130.         return lines
131.  
132.     def _processEnvironmentReflections(self, lines):
133.         floatsIdx = -1
134.         for idx, line in enumerate(lines):
135.             if line.startswith("    - _EnvironmentReflections:"):
136.                 return lines
137.  
138.             if line.startswith("    m_Floats:"):
139.                 floatsIdx = idx
140.        
141.         lines.insert(floatsIdx + 1, u"    - _EnvironmentReflections: 1\n")
142.         return lines
143.  
144.     def _processSmoothness(self, lines):
145.         floatsIdx = -1
146.         for idx, line in enumerate(lines):
147.             if line.startswith("    - _Smoothness:"):
148.                 return lines
149.  
150.             if line.startswith("    m_Floats:"):
151.                 floatsIdx = idx
152.        
153.         lines.insert(floatsIdx + 1, u"    - _Smoothness: 0.5\n")
154.         return lines
155.  
156.     def _processQueueOffset(self, lines):
157.         floatsIdx = -1
158.         for idx, line in enumerate(lines):
159.             if line.startswith("    - _QueueOffset:"):
160.                 return lines
161.  
162.             if line.startswith("    m_Floats:"):
163.                 floatsIdx = idx
164.        
165.         lines.insert(floatsIdx + 1, u"    - _QueueOffset: 0\n")
166.         return lines
167.  
168.     def _processBaseColor(self, lines):
169.         colorLineIdx = -1
170.         colorLine = ""
171.         for idx, line in enumerate(lines):
172.             if line.startswith("    - _BaseColor:"):
173.                 return lines
174.  
175.             if line.startswith("    - _Color:"):
176.                 colorLine = line
177.                 colorLineIdx = idx
178.        
179.         lines.insert(idx, colorLine.replace("_Color", "_BaseColor"))
180.         return lines
181.  
182.     @staticmethod
183.     def _isValidFile(filePath):
184.         if (not os.path.exists(filePath) or
185.            not os.path.isfile(filePath)):
186.             return False
187.  
188.         return os.path.splitext(filePath)[1] == ".mat"
189.  
190. if __name__ == "__main__":
191.     MaterialFixer().run()
192.  

Alex