update pixel format of UTextureRenderTarget2D instances #4321
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switch pixel format for various image types from EPixelFormat::PF_B8G8R8A8 to EPixelFormat::PF_FloatRGBA to enable compatibility with FD3D11DynamicRHI::RHIReadSurfaceFloatData
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Are we sure this is correct, seems strange that this only results in crashes sometimes. |
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Thanks @zimmy87! |
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Thanks for taking a look at this PR @rajat2004, I think you might be confusing #4120 with a related issue #3291. When I tried the repro of #4120, I was getting a 100% repro, so this isn't an intermittent or timing issue. The relevant UE4 source code is here |
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Fixes: #4120
About
This PR switches the pixel format inside the UTextureRenderTarget2D for various image types from EPixelFormat::PF_B8G8R8A8 to EPixelFormat::PF_FloatRGBA to enable compatibility with FD3D11DynamicRHI::RHIReadSurfaceFloatData. There is a check inside FD3D11DynamicRHI::RHIReadSurfaceFloatData that ensures the pixel format of the inputted FRHITexture is EPixelFormat::PF_FloatRGBA.
How Has This Been Tested?
The scenario described in the repro steps of #4120 was confirmed to be working with this fix. Basic movement of a drone with a controller was tested with subwindows for each ImageType enabled to confirm each ImageType renders correctly. hello_drone.py was also run to confirm scene captures can still be taken and look correct.
Screenshots (if appropriate):