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blender/build_files/build_environment/patches/dpcpp.diff

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Cycles: Add support for rendering on Intel GPUs using oneAPI This patch adds a new Cycles device with similar functionality to the existing GPU devices. Kernel compilation and runtime interaction happen via oneAPI DPC++ compiler and SYCL API. This implementation is primarly focusing on Intel® Arc™ GPUs and other future Intel GPUs. The first supported drivers are 101.1660 on Windows and 22.10.22597 on Linux. The necessary tools for compilation are: - A SYCL compiler such as oneAPI DPC++ compiler or https://github.com/intel/llvm - Intel® oneAPI Level Zero which is used for low level device queries: https://github.com/oneapi-src/level-zero - To optionally generate prebuilt graphics binaries: Intel® Graphics Compiler All are included in Linux precompiled libraries on svn: https://svn.blender.org/svnroot/bf-blender/trunk/lib The same goes for Windows precompiled binaries but for the graphics compiler, available as "Intel® Graphics Offline Compiler for OpenCL™ Code" from https://www.intel.com/content/www/us/en/developer/articles/tool/oneapi-standalone-components.html, for which path can be set as OCLOC_INSTALL_DIR. Being based on the open SYCL standard, this implementation could also be extended to run on other compatible non-Intel hardware in the future. Reviewed By: sergey, brecht Differential Revision: https://developer.blender.org/D15254 Co-authored-by: Nikita Sirgienko <nikita.sirgienko@intel.com> Co-authored-by: Stefan Werner <stefan.werner@intel.com>
2022-06-29 12:58:04 +02:00
diff -Naur llvm-sycl-nightly-20220501.orig\opencl/CMakeLists.txt llvm-sycl-nightly-20220501\opencl/CMakeLists.txt
--- llvm-sycl-nightly-20220501.orig/opencl/CMakeLists.txt 2022-04-29 13:47:11 -0600
+++ llvm-sycl-nightly-20220501/opencl/CMakeLists.txt 2022-05-21 15:25:06 -0600
@@ -11,6 +11,11 @@
)
endif()
+# Blender code below is determined to use FetchContent_Declare
+# temporarily allow it (but feed it our downloaded tarball
+# in the OpenCL_HEADERS variable
+set(FETCHCONTENT_FULLY_DISCONNECTED OFF)
+
# Repo URLs
set(OCL_HEADERS_REPO
@@ -77,5 +82,6 @@
FetchContent_MakeAvailable(ocl-icd)
add_library(OpenCL-ICD ALIAS OpenCL)
+set(FETCHCONTENT_FULLY_DISCONNECTED ON)
add_subdirectory(opencl-aot)
diff -Naur llvm-sycl-nightly-20220208.orig/libdevice/cmake/modules/SYCLLibdevice.cmake llvm-sycl-nightly-20220208/libdevice/cmake/modules/SYCLLibdevice.cmake
--- llvm-sycl-nightly-20220208.orig/libdevice/cmake/modules/SYCLLibdevice.cmake 2022-02-08 09:17:24 -0700
+++ llvm-sycl-nightly-20220208/libdevice/cmake/modules/SYCLLibdevice.cmake 2022-05-24 11:35:51 -0600
@@ -36,7 +36,9 @@
add_custom_target(libsycldevice-obj)
add_custom_target(libsycldevice-spv)
-add_custom_target(libsycldevice DEPENDS
+# Blender: add ALL here otherwise this target will not build
+# and cause an error due to missing files during the install phase.
+add_custom_target(libsycldevice ALL DEPENDS
libsycldevice-obj
libsycldevice-spv)
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