Mirrored_Repos/DarkflameServer
1
0
Fork 0
mirror of https://github.com/DarkflameUniverse/DarkflameServer.git synced 2026-10-08 22:03:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat(ugc): ray_backend=embree-gpu traces on Intel GPUs with Embree's SYCL (optional build)

Browse Source 
The third ray backend, so every machine has a library for it: Embree on x86
CPUs (embree), HIPRT on AMD and NVIDIA GPUs (hiprt), Embree through SYCL on
Intel Arc and Xe GPUs (embree-gpu).

- CMake option DLU_EMBREE_SYCL (off). dUgcServer/EmbreeSycl is a project of
  its own built by a SYCL compiler (DLU_SYCL_CXX; icpx through ONEAPI_ROOT or
  the path, or the open source DPC++'s clang++ through DPCPP_ROOT) as an
  external project: Embree 4.4 with EMBREE_SYCL_SUPPORT, linked statically and
  bound inside (-Bsymbolic, only its C functions exported, so it never meets
  the servers' own Embree), and the GPU kernels (nearest hit skipping a ray's
  triangle, any hit), into libdlu_embree_sycl next to the servers
- UgcRaysEmbreeGpu loads it the first time embree-gpu is asked for; one GPU for
  the process (embree_gpu_device picks it), the workers take turns, the
  occlusion rays in batches as for hiprt
- without the build, the library or a supported Intel GPU it falls back to
  embree and says why (the UGC server's log at start, --make-model on stderr)
- the option names, the settings page, the dashboard's picker, /reprocessproperty

Verified here: the default build and ctest; the SYCL build with the open source
DPC++ 7.1.0 (compiles, links against oneAPI's libsycl.so.9, exports only its C
functions); on this machine (no Intel GPU) it loads, finds no GPU and falls
back to embree. Not verified: tracing on an Intel GPU (none here).

Check: on a machine with an Intel Arc or Xe GPU and oneAPI, configure with
-DDLU_EMBREE_SYCL=ON and run UgcServer --make-model x.lxfml out embree-gpu;
the UGC tests then compare it with Embree.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Aaron Kimbrell
2026-09-29 12:28:33 -05:00
parent a7defdb326
commit db63fd2919
18 changed files with 604 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
dUgcServer/UgcServer.cpp
View File

@@ -159,7 +159,8 @@ namespace {
// What traces the occlusion rays (the icon's too)
settings.ao.rays = UgcRays::Parse(Game::config->GetValue("ray_backend")).value_or(UgcRays::eBackend::EMBREE);
// The GPU hiprt uses (read before it is first used; changing it takes a restart)
UgcRays::SetGpuDevice(std::max(Setting<int32_t>("hiprt_device", 0), 0));
UgcRays::SetGpuDevice(UgcRays::eBackend::HIPRT, std::max(Setting<int32_t>("hiprt_device", 0), 0));
UgcRays::SetGpuDevice(UgcRays::eBackend::EMBREE_GPU, std::max(Setting<int32_t>("embree_gpu_device", 0), 0));
settings.ao.enabled = Setting<int32_t>("bake_ao", 1) != 0;
settings.ao.distance = Setting<float>("ao_distance", 5.0f);
settings.ao.samples = std::clamp(Setting<int32_t>("ao_samples", 64), 1, 1024);
@@ -573,10 +574,13 @@ namespace {
auto settings = ReadSettings();
UgcProcessOptions::Choice choice;
if (!UgcProcessOptions::Parse(options, choice)) {
std::cerr << "Unknown processing options \"" << options << "\" (ray backend embree or hiprt; denoise off or oidn)\n";
std::cerr << "Unknown processing options \"" << options << "\" (ray backend embree, hiprt or embree-gpu; denoise off or oidn)\n";
return EXIT_FAILURE;
}
UgcJobs::ApplyOptions(settings, choice);
if (UgcRays::Resolve(settings.ao.rays) != settings.ao.rays) {
std::cerr << "ray_backend=" << UgcRays::Name(settings.ao.rays) << " can't be used (" << UgcRays::Problem(settings.ao.rays) << "): embree instead\n";
}
UgcBricks::BrickLibrary library(res, 0, ClientReader());
if (!library.LoadMaterials()) std::cerr << "Couldn't read Materials.xml from " << (res / "brickdb.zip") << "; bricks will be grey\n";
UgcJobs::Outcome outcome;