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Won't Fix
Votes
0
Found in
2018.3.0a1
2018.4.0f1
2019.1.0a1
2019.2.0a1
2019.3.0a1
2020.1.0a1
Issue ID
1182452
Regression
Yes
[hlsl2glsl -> HLSLcc][iOS][OpenGLES2]Reduced precision in shader floats on devices that only support OpenGLES2
How to reproduce:
1. Open the attached ShaderPrecision.zip project
2. Open the "MainScene" in the Assets folder
3. Make sure that OpenGLES2 is set in Player Settings-> Graphic API
3. Build for iOS and deploy the Xcode project to the iOS device
Expected: The shader looks the same as in the Editor
Actual: Reduced precision in shader floats (see the attached Actual:Unity2018_4.mov and Expected:Unity5_6.mov videos in the Edit section)
Reproducible with: 2018.3.14f1, 2020.1.0a4
Reproducible with:
iPad 4th generation (iOS 10.3.3)
iPhone 5c (iOS 9.3.2)
Not reproducible with: 2017.4.32f1, 2018.2.21f1
Reggresed in: 2018.3.0a1
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Resolution Note (2019.3.X):
This is due to our move from hlsl2glsl to HLSLcc on GLES2. ATM there seems to be no workaround to the issue.