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Fixed in 2019.2.X
Votes
0
Found in
2019.1.0a12
2019.1.0b3
Issue ID
1127310
Regression
No
B10G11R11 cannot be used a source for async readback
please ignore initial repro project and use TestReadback.zip attached later
*somewhere deep inside LWRP we decide to use this format for metal - this does not make this issue metal specific
Steps to reproduce:
1. open TestReadback scene and press play
Actual Result:
there may/will be asserts and errors. The most important part is that script attached to camera shows texture copy of RT - they will be very different (to make sure script make sense you can tweak it to use "saner" format)
*please note that you can freely ignore ValidateFormat error if that happens - it is simply logged (not an exception) and it happens because c#-side SystemInfo.IsFormatSupported is very weird
THE reason:
on all platforms AsyncReadback reads data from texture as is and then use ImageReference to do on-CPU conversion. ImageReference works strictly with TextureFormat and not all GraphicsFormat/RenderTextureFormat can be mapped to TextureFormat
please note that repro uses GraphicsFormat.B10G11R11_UFloatPack32 but it will be reproduced with RenderTextureFormat.RGB111110Float
hence i removed regression flag but i keep "first affected version" as i didnt bother to check that way back
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Resolution Note (fix version 2019.2):
readback from RG11B10 is not supported. There is exception added in 2017.2 about that