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refactor(ugc): remove the path traced hidden-face method; the renders are the only one

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The path tracer that imitated LU Toolbox's Remove Hidden Faces took 17 to 100
times as long as the renders from 42 directions around the model, too heavy to
use. It goes with its settings (hsr_method, hsr_samples, hsr_bounces,
hsr_sample_spacing, hsr_min_points), its side by side tracing for GPUs and its
tests. The renders (UgcRender::VisibleFromAround) remove hidden faces as before
that method existed; their size is hsr_resolution (1024), and the memory
estimate counts their buffers again.

The hidden-face method is no longer a processing option: the dashboard's picker,
/reprocessproperty and --make-model take only the ray backend (the occlusion's)
and denoising. Options stored before (made_options, process_options,
ugc_process_runs, --make-model arguments) that name toolbox or fast still
parse; the word is skipped.

Check: the settings page has no hsr_method or path settings and has
hsr_resolution; /reprocessproperty embree toolbox still works (toolbox
ignored); models made with the defaults keep their hashes (UGC tests).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Aaron Kimbrell
2026-09-29 12:12:25 -05:00
parent b897681f67
commit 07154c58d2
19 changed files with 104 additions and 896 deletions
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25
dUgcServer/Processing/UgcJobs.cpp
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@@ -54,12 +54,12 @@ namespace UgcJobs {
}
uint64_t EstimateMemory(size_t parts, const Settings& settings) {
// Measured: the icon's buffers, and per brick its mesh in each LOD (positions, normals, colors, indices,
// the occlusion tree and copies made along the way), about 40 KB at LOD 0, and the hidden faces' ray tree
// (about 60 bytes a triangle, one LOD at a time)
// Measured: the renders' buffers, and per brick its mesh in each LOD (positions, normals, colors, indices,
// the occlusion tree and copies made along the way), about 40 KB at LOD 0
const uint64_t resolution = static_cast<uint64_t>(std::clamp(settings.hsr.resolution, 64, 4096));
const uint64_t icon = static_cast<uint64_t>(settings.icon.size) * settings.icon.supersample;
const uint64_t fixed = icon * icon * 20 + 1024 * 1024 * 4 + 16 * 1024 * 1024;
return fixed + static_cast<uint64_t>(parts) * (40 * 1024 * (1 + settings.lods.size()) + 16 * 1024);
const uint64_t fixed = resolution * resolution * 8 + icon * icon * 20 + 1024 * 1024 * 4 + 16 * 1024 * 1024;
return fixed + static_cast<uint64_t>(parts) * 40 * 1024 * (1 + settings.lods.size());
}
namespace {
@@ -177,15 +177,13 @@ namespace UgcJobs {
}
void ApplyOptions(Settings& settings, const UgcProcessOptions::Choice& choice) {
if (const auto rays = UgcRays::Parse(choice.rays)) settings.hsr.rays = settings.ao.rays = settings.icon.ao.rays = *rays;
if (const auto method = UgcHsr::Parse(choice.hsr)) settings.hsr.method = *method;
if (const auto rays = UgcRays::Parse(choice.rays)) settings.ao.rays = settings.icon.ao.rays = *rays;
if (const auto denoise = UgcRender::ParseDenoise(choice.denoise)) settings.icon.denoise = *denoise;
}
UgcProcessOptions::Choice MadeWith(const Settings& settings) {
const auto denoise = UgcRender::Available(settings.icon.denoise) ? settings.icon.denoise : UgcRender::eDenoise::OFF;
return { std::string(UgcRays::Name(UgcRays::Resolve(settings.hsr.rays))), std::string(UgcHsr::Name(settings.hsr.method)),
std::string(UgcRender::Name(denoise)) };
return { std::string(UgcRays::Name(UgcRays::Resolve(settings.ao.rays))), std::string(UgcRender::Name(denoise)) };
}
Outcome ProcessModel(const std::string& blob, UgcBricks::BrickLibrary& library, const Settings& settings, uint64_t seed, const UgcIconParams::Values& iconValues) {
@@ -257,9 +255,7 @@ namespace UgcJobs {
nlohmann::json entry{ { "lod", lods[i] }, { "near", ranges[i].first }, { "far", ranges[i].second },
{ "opaqueBefore", model.opaque.TriangleCount() }, { "transparent", model.transparent.TriangleCount() } };
step = std::chrono::steady_clock::now();
auto hsr = settings.hsr;
hsr.seed = seed;
const auto optimized = UgcHsr::RemoveHiddenFaces(model, hsr);
const auto optimized = UgcHsr::RemoveHiddenFaces(model, settings.hsr);
hsrMs += Since(step);
if (i == 0 && optimized.trianglesRemoved > 0) {
if (!outcome.note.empty()) outcome.note += "; ";
@@ -373,14 +369,11 @@ namespace UgcJobs {
{ "icon", std::lround(iconMs) }, { "total", std::lround(Since(started)) } };
stats["settings"] = { { "palette", settings.build.palette == UgcModel::ePalette::LU_TOOLBOX ? "lu_toolbox" : "brickdb" },
{ "colorVariation", settings.build.colorVariation }, { "transparentOpacity", settings.build.transparentOpacity },
{ "removeHiddenFaces", settings.hsr.enabled }, { "groundPlane", settings.hsr.groundPlane }, { "hsrSamples", settings.hsr.samples },
{ "hsrBounces", settings.hsr.bounces }, { "hsrSampleSpacing", settings.hsr.spacing }, { "hsrMinPoints", settings.hsr.minPoints },
{ "removeHiddenFaces", settings.hsr.enabled }, { "groundPlane", settings.hsr.groundPlane }, { "hsrResolution", settings.hsr.resolution },
{ "ao", settings.ao.enabled }, { "aoDistance", settings.ao.distance }, { "aoSamples", settings.ao.samples }, { "aoStrength", settings.ao.strength } };
const auto madeWith = MadeWith(settings);
stats["settings"]["rays"] = madeWith.rays;
stats["settings"]["hsrMethod"] = madeWith.hsr;
stats["settings"]["denoise"] = madeWith.denoise;
if (settings.hsr.method == UgcHsr::eMethod::FAST) stats["settings"]["hsrFastResolution"] = settings.hsr.fastResolution;
outcome.options = UgcProcessOptions::ToString(madeWith);
outcome.stats = stats.dump();
outcome.files["stats.json"] = outcome.stats;