Mirrored_Repos/DarkflameServer
1
0
Fork 0
mirror of https://github.com/DarkflameUniverse/DarkflameServer.git synced 2026-10-02 02:43:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

build(ugc): fetch and build Embree 4 for the UGC server's rays

Browse Source 
Embree 4.4.0 (Apache-2.0) is fetched like glm and curl and built as a static
library: its own task scheduler (no TBB), triangles only, single rays, no ISPC,
SYCL, tutorials or tests; SSE2, AVX and AVX2 kernels picked at run time. Its
Debug build keeps its optimizations but not its assertions. Nothing uses it yet.

Check: a clean configure fetches embree and the build links (Linux and Windows);
the extra build time.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Aaron Kimbrell
2026-09-29 11:05:59 -05:00
parent 7dc85692d9
commit 6ca265a4d9
1 changed files with 51 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
thirdparty/CMakeLists.txt vendored
View File

@@ -128,3 +128,54 @@ function(dlu_fetch_curl)
FetchContent_MakeAvailable(curl)
endfunction()
dlu_fetch_curl()
# Embree 4 (Apache-2.0), the ray queries of the UGC server's hidden face removal and ambient occlusion. A static
# library with its own task scheduler (no TBB), triangles only, single rays only, no ISPC, tutorials or tests.
# Options are set inside a function so they don't leak into our own build.
function(dlu_fetch_embree)
# Embree asks for CMake 3.5's behaviour: let the variables below win over its option() and set(CACHE) defaults
set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
set(CMAKE_POLICY_DEFAULT_CMP0126 NEW)
set(BUILD_TESTING OFF)
set(EMBREE_STATIC_LIB ON)
set(EMBREE_TASKING_SYSTEM "INTERNAL")
set(EMBREE_ISPC_SUPPORT OFF)
set(EMBREE_TUTORIALS OFF)
set(EMBREE_ZIP_MODE OFF)
set(EMBREE_INSTALL_DEPENDENCIES OFF)
set(EMBREE_SYCL_SUPPORT OFF)
set(EMBREE_FILTER_FUNCTION ON)
set(EMBREE_RAY_MASK OFF)
set(EMBREE_RAY_PACKETS OFF)
set(EMBREE_BACKFACE_CULLING OFF)
set(EMBREE_GEOMETRY_TRIANGLE ON)
foreach(geometry QUAD CURVE SUBDIVISION USER INSTANCE INSTANCE_ARRAY GRID POINT)
set(EMBREE_GEOMETRY_${geometry} OFF)
endforeach()
# Kernels for SSE2 (any x86-64), AVX and AVX2 (picked at run time by what the CPU has; AVX2 needs AVX's 8 wide
# hierarchy). SSE4.2 and AVX-512 would only add build time. ARM builds use NEON whatever these say.
set(EMBREE_MAX_ISA "NONE")
set(EMBREE_ISA_SSE2 ON)
set(EMBREE_ISA_SSE42 OFF)
set(EMBREE_ISA_AVX ON)
set(EMBREE_ISA_AVX2 ON)
set(EMBREE_ISA_AVX512 OFF)
FetchContent_Declare(
embree
GIT_REPOSITORY https://github.com/RenderKit/embree.git
GIT_TAG ff9381774dc99fea81a932ad276677aad6a3d4dd #refs/tags/v4.4.0
GIT_PROGRESS TRUE
GIT_SHALLOW 1
)
FetchContent_MakeAvailable(embree)
# Embree's Debug build is optimized but turns its assertions on, which slows it down a lot: off in every build
foreach(target embree embree_avx embree_avx2 sys math simd tasking lexers)
if(TARGET ${target})
target_compile_options(${target} PRIVATE "$<$<CONFIG:Debug>:$<IF:$<CXX_COMPILER_ID:MSVC>,/UDEBUG,-UDEBUG>>"
"$<$<CONFIG:Debug>:$<IF:$<CXX_COMPILER_ID:MSVC>,/UTBB_USE_DEBUG,-UTBB_USE_DEBUG>>")
endif()
endforeach()
endfunction()
dlu_fetch_embree()