d350976ba0
This patch adds a Hydra render delegate to Cycles, allowing Cycles to be used for rendering in applications that provide a Hydra viewport. The implementation was written from scratch against Cycles X, for integration into the Blender repository to make it possible to continue developing it in step with the rest of Cycles. For this purpose it follows the style of the rest of the Cycles code and can be built with a CMake option (`WITH_CYCLES_HYDRA_RENDER_DELEGATE=1`) similar to the existing standalone version of Cycles. Since Hydra render delegates need to be built against the exact USD version and other dependencies as the target application is using, this is intended to be built separate from Blender (`WITH_BLENDER=0` CMake option) and with support for library versions different from what Blender is using. As such the CMake build scripts for Windows had to be modified slightly, so that the Cycles Hydra render delegate can e.g. be built with MSVC 2017 again even though Blender requires MSVC 2019 now, and it's possible to specify custom paths to the USD SDK etc. The codebase supports building against the latest USD release 22.03 and all the way back to USD 20.08 (with some limitations). Reviewed By: brecht, LazyDodo Differential Revision: https://developer.blender.org/D14398
69 lines
1.9 KiB
CMake
69 lines
1.9 KiB
CMake
# SPDX-License-Identifier: BSD-3-Clause
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# Copyright 2019 Blender Foundation.
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# - Find Universal Scene Description (USD) library
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# Find the native USD includes and libraries
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# This module defines
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# USD_INCLUDE_DIRS, where to find USD headers, Set when
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# USD_INCLUDE_DIR is found.
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# USD_LIBRARIES, libraries to link against to use USD.
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# USD_ROOT_DIR, The base directory to search for USD.
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# This can also be an environment variable.
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# USD_FOUND, If false, do not try to use USD.
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#
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# If USD_ROOT_DIR was defined in the environment, use it.
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IF(NOT USD_ROOT_DIR AND NOT $ENV{USD_ROOT_DIR} STREQUAL "")
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SET(USD_ROOT_DIR $ENV{USD_ROOT_DIR})
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ENDIF()
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SET(_usd_SEARCH_DIRS
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${USD_ROOT_DIR}
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/opt/lib/usd
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)
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FIND_PATH(USD_INCLUDE_DIR
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NAMES
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pxr/usd/usd/api.h
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HINTS
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${_usd_SEARCH_DIRS}
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PATH_SUFFIXES
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include
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DOC "Universal Scene Description (USD) header files"
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)
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# Since USD 21.11 the libraries are prefixed with "usd_", i.e. "libusd_m.a" became "libusd_usd_m.a".
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# See https://github.com/PixarAnimationStudios/USD/blob/release/CHANGELOG.md#2111---2021-11-01
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FIND_LIBRARY(USD_LIBRARY
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NAMES
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usd_usd_m usd_usd_ms usd_m usd_ms ${USD_LIBRARY_PREFIX}usd
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NAMES_PER_DIR
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HINTS
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${_usd_SEARCH_DIRS}
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PATH_SUFFIXES
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lib64 lib lib/static
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DOC "Universal Scene Description (USD) monolithic library"
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)
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IF(${USD_LIBRARY_NOTFOUND})
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set(USD_FOUND FALSE)
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ELSE()
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# handle the QUIETLY and REQUIRED arguments and set USD_FOUND to TRUE if
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# all listed variables are TRUE
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INCLUDE(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(USD DEFAULT_MSG USD_LIBRARY USD_INCLUDE_DIR)
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IF(USD_FOUND)
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get_filename_component(USD_LIBRARY_DIR ${USD_LIBRARY} DIRECTORY)
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SET(USD_INCLUDE_DIRS ${USD_INCLUDE_DIR})
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set(USD_LIBRARIES ${USD_LIBRARY})
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ENDIF()
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ENDIF()
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MARK_AS_ADVANCED(
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USD_INCLUDE_DIR
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USD_LIBRARY_DIR
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)
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UNSET(_usd_SEARCH_DIRS)
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