ola olsson e929658097 Implemented depth prepass for SingleLayerWater. Depth prepass output is fed into VSM page marking/allocation shader to get correct VSM pages for sampling VSM on water. The depth prepass is also used in the main water pass by setting the main pass depth test to EQUAL and forcing earlyZ. CopyTexture() is currently not supported for depth buffers on all platforms, so I had to write a custom copy shader to create a copy of the main depth buffer to render the water depth prepass into. ...

#ushell-cherrypick of 21812612 by tim.doerries
#rb Ola.Olsson, andrew.lauritzen, Sebastien.Hillaire
#rnx
#preflight 6331ccc3a4769ad714ad3473

[CL 22307543 by ola olsson in ue5-main branch]

2022-10-03 12:55:37 -04:00

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