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pipeline: write the shader store on a background thread

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This commit is contained in:
nmzik
2026-10-25 01:59:49 +02:00
parent 72903bfce6
commit dd5bc26c64
3 changed files with 108 additions and 33 deletions
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tests/ShaderRecompilerComputeTests.cpp
+20 -2
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@@ -611,6 +611,13 @@ struct PipelineCacheTestAccess {
cache.StoreLayout(key, layout);
}
// Holds the store thread until the cache is destroyed.
static void HoldStoreUntilExit(PipelineCache &cache) {
cache.m_store.Post([stop = cache.m_store.m_thread.get_stop_token()] {
while (!stop.stop_requested()) std::this_thread::yield();
});
}
static const auto &TessLayouts(const PipelineCache &cache) { return cache.m_tess_layouts; }
static std::array<size_t, 2> Pipelines(const PipelineCache &cache) {
@@ -44917,11 +44924,20 @@ void CheckShaderStore(VulkanHarness &vulkan) {
flip(0);
Require(name, "stale store", run() == cold && std::filesystem::file_size(store) == size,
"a store with another header was reused instead of started over");
// Reflecting a layout decodes LS and HS, so a restart takes it from the store.
// Reflecting a layout decodes LS and HS, so a restart takes it from the store. Records land
// while the cache lives; one still queued at its destruction lands before it is gone.
const ShaderTessellationInputInfo layout{1, 2, 3, 4, 5, 6, 7, 8, 9};
{
RenderContext context(vulkan.RuntimeContext(), store);
PipelineCacheTestAccess::StoreLayout(context.GetPipelineCache(), 1, layout);
auto &cache = context.GetPipelineCache();
PipelineCacheTestAccess::StoreLayout(cache, 1, layout);
const auto deadline = std::chrono::steady_clock::now() + std::chrono::seconds(5);
while (std::filesystem::file_size(store) <= size && std::chrono::steady_clock::now() < deadline)
std::this_thread::yield();
Require(name, "background write", std::filesystem::file_size(store) > size,
"a record waited for the cache to be destroyed");
PipelineCacheTestAccess::HoldStoreUntilExit(cache);
PipelineCacheTestAccess::StoreLayout(cache, 2, layout);
}
{
RenderContext context(vulkan.RuntimeContext(), store);
@@ -44929,6 +44945,8 @@ void CheckShaderStore(VulkanHarness &vulkan) {
Require(name, "tessellation layout",
layouts.contains(1) && std::memcmp(&layouts.at(1), &layout, sizeof(layout)) == 0,
"a restart did not load the stored tessellation layout");
Require(name, "drain at exit", layouts.contains(2),
"a record still queued when the cache was destroyed was dropped");
}
std::filesystem::remove_all(store.parent_path());
Require(name, "release",