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Publish synchronous buffer downloads inline after ordered completion

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This commit is contained in:
nmzik
2026-10-02 13:00:47 +04:00
parent a67a033ff8
commit 39e23ac92e
3 changed files with 42 additions and 11 deletions
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tests/ShaderRecompilerComputeTests.cpp
+26 -2
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@@ -4208,7 +4208,30 @@ public:
cache.FillBuffer(base + offset, sizeof(window_value), window_value,
false);
}
const auto window_publication_tick = scheduler.CurrentTick();
std::binary_semaphore window_publication_entered{0};
std::binary_semaphore release_window_publication{0};
std::atomic<bool> window_readback_returned{false};
scheduler.DeferPriorityOperation([&] {
window_publication_entered.release();
release_window_publication.acquire();
Libs::LibKernel::Memory::WriteBacking(
base + window_inside_offset, &window_stale, sizeof(window_stale));
});
std::jthread release_window_callback([&] {
window_publication_entered.acquire();
const auto deadline = std::chrono::steady_clock::now() +
std::chrono::milliseconds(100);
while (!window_readback_returned.load() &&
std::chrono::steady_clock::now() < deadline) {
std::this_thread::yield();
}
release_window_publication.release();
});
cache.ReadMemory(base + window_fault_offset, sizeof(window_value));
window_readback_returned = true;
release_window_callback.join();
scheduler.WaitPriorityOperations(window_publication_tick);
uint32_t window_inside_backing = 0;
uint32_t window_outside_backing = 0;
Libs::LibKernel::Memory::TryReadBacking(base + window_inside_offset,
@@ -4217,7 +4240,7 @@ public:
Libs::LibKernel::Memory::TryReadBacking(base + window_outside_offset,
&window_outside_backing,
sizeof(window_outside_backing));
Require(name, "widened-window boundary",
Require(name, "widened-window publication order and boundary",
window_inside_backing == window_value &&
window_outside_backing == window_stale &&
!cache.HasGpuDirtyBytes(base + window_inside_offset,
@@ -4228,7 +4251,8 @@ public:
sizeof(window_value)) &&
cache.IsRegionGpuModified(base + window_outside_offset,
sizeof(window_value)),
"readback did not honor the clamped half-open 512 KiB window");
"readback did not publish after the older overlapping callback "
"or honor the clamped half-open 512 KiB window");
cache.ReadMemory(base + window_outside_offset, sizeof(window_value));
Libs::LibKernel::Memory::WriteBacking(base + first_offset, &first_stale,