IStereoRendering::RenderTexture_RenderThread CUSTOM "FTexture2DRHIParamRef SrcTexture"

Is it possible use a custom texture the game renders into that comes in from “RenderTexture_RenderThread”

Example: I want to use my own SrcTexture that I can dynamic switch out for different sizes.

RenderTexture_RenderThread(FRHICommandListImmediate& RHICmdList, FTexture2DRHIParamRef BackBuffer, FTexture2DRHIParamRef SrcTexture)

This would be used for dynamic resolution scaling to keep the game within a particular FPS.