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Merge pull request 'perf(rt): high-water-mark growth for TLAS host-input buffers (#64)' (#98) from claude/issue-64 into master

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catbot 2026-06-16 20:24:48 +02:00
commit 00b84dd301
3 changed files with 339 additions and 4 deletions
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31
project.cpp
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@ -328,6 +328,37 @@ extern "C" Configuration CrafterBuildProject(std::span<const std::string_view> a
bc.GetInterfacesAndImplementations(ifaces, blasImpls);
cfg.tests.push_back(std::move(blasTest));
// Issue #64: TLAS host-input buffers (instanceBuffer / metadataBuffer)
// grow on a high-water mark instead of reallocating to the exact count
// every topology change. Drives the real hardware AS-build path — a
// cube BLAS plus RenderingElement3D::BuildTLAS at a sequence of
// instance counts — and asserts that a shrink (and any growth within
// the high-water capacity) reuses the existing allocation while a
// growth past it reallocates, with the validation layer reporting no
// errors when an oversized instance buffer is fed to the build. Needs a
// Vulkan RT device at runtime, so it shares the native build settings.
Test tlasTest;
Configuration& tlc = tlasTest.config;
tlc.path = cfg.path;
tlc.name = "TLASHighWaterMark";
tlc.outputName = "TLASHighWaterMark";
tlc.type = ConfigurationType::Executable;
tlc.target = cfg.target;
tlc.march = cfg.march;
tlc.mtune = cfg.mtune;
tlc.debug = cfg.debug;
tlc.sysroot = cfg.sysroot;
tlc.dependencies = cfg.dependencies;
tlc.externalDependencies = cfg.externalDependencies;
tlc.compileFlags = cfg.compileFlags;
tlc.linkFlags = cfg.linkFlags;
tlc.defines = cfg.defines;
tlc.cFiles = cfg.cFiles;
std::vector<fs::path> tlasImpls(impls.begin(), impls.end());
tlasImpls.emplace_back("tests/TLASHighWaterMark/main");
tlc.GetInterfacesAndImplementations(ifaces, tlasImpls);
cfg.tests.push_back(std::move(tlasTest));
// Issue #51: FontAtlas only re-uploads the dirty sub-rect now,
// tracked via FontAtlas::DirtyRect. The accumulation/clamp math is
// pure CPU, so this test drives it directly — no GPU device needed