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Cycles: add HIP RT device, for AMD hardware ray tracing on Windows

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HIP RT enables AMD hardware ray tracing on RDNA2 and above, and falls back to a
to shader implementation for older graphics cards. It offers an average 25%
sample rendering rate improvement in Cycles benchmarks, on a W6800 card.

The ray tracing feature functions are accessed through HIP RT SDK, available on
GPUOpen. HIP RT traversal functionality is pre-compiled in bitcode format and
shipped with the SDK.

This is not yet enabled as there are issues to be resolved, but landing the
code now makes testing and further changes easier.

Known limitations:
* Not working yet with current public AMD drivers.
* Visual artifact in motion blur.
* One of the buffers allocated for traversal has a static size. Allocating it
  dynamically would reduce memory usage.
* This is for Windows only currently, no Linux support.

Co-authored-by: Brecht Van Lommel <brecht@blender.org>

Ref #105538
This commit is contained in:
Sahar A. Kashi
2023-04-24 19:05:30 +02:00
committed by Brecht Van Lommel
parent 7026d9ac43
commit 557a245dd5
33 changed files with 2794 additions and 39 deletions
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13
CMakeLists.txt
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@@ -525,6 +525,12 @@ if(NOT APPLE)
set(CYCLES_HIP_BINARIES_ARCH gfx900 gfx90c gfx902 gfx1010 gfx1011 gfx1012 gfx1030 gfx1031 gfx1032 gfx1034 gfx1035 gfx1100 gfx1101 gfx1102 CACHE STRING "AMD HIP architectures to build binaries for")
mark_as_advanced(WITH_CYCLES_DEVICE_HIP)
mark_as_advanced(CYCLES_HIP_BINARIES_ARCH)
# HIPRT is only available on Windows for now.
if(WIN32)
option(WITH_CYCLES_DEVICE_HIPRT "Enable Cycles AMD HIPRT support" OFF)
mark_as_advanced(WITH_CYCLES_DEVICE_HIPRT)
endif()
endif()
# Apple Metal
@@ -1981,10 +1987,13 @@ if(FIRST_RUN)
info_cfg_option(WITH_CYCLES_DEVICE_OPTIX)
info_cfg_option(WITH_CYCLES_DEVICE_CUDA)
info_cfg_option(WITH_CYCLES_CUDA_BINARIES)
info_cfg_option(WITH_CYCLES_DEVICE_HIP)
info_cfg_option(WITH_CYCLES_HIP_BINARIES)
info_cfg_option(WITH_CYCLES_DEVICE_ONEAPI)
info_cfg_option(WITH_CYCLES_ONEAPI_BINARIES)
info_cfg_option(WITH_CYCLES_DEVICE_HIP)
info_cfg_option(WITH_CYCLES_HIP_BINARIES)
endif()
if(WIN32)
info_cfg_option(WITH_CYCLES_DEVICE_HIPRT)
endif()
endif()