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renderer: invalidate buffers on memory unmap

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This commit is contained in:
nmzik
2026-08-24 00:40:02 +02:00
parent 186621c6ff
commit 1779142805
4 changed files with 90 additions and 120 deletions
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src/graphics/host_gpu/renderer/cache/bufferCache.cpp
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-65
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@@ -296,71 +296,6 @@ void BufferCache::ReadMemoryOnGpu(uint64_t vaddr, uint64_t size, bool is_write)
}
}
void BufferCache::UnmapMemory(uint64_t vaddr, uint64_t size) {
if (vaddr == 0 || size == 0 || size > UINT64_MAX - vaddr) {
EXIT("BufferCache: invalid unmap range\n");
}
std::vector<DownloadCopy> copies;
std::vector<std::pair<uint64_t, uint64_t>> modified_buffers;
std::vector<std::pair<uint64_t, uint64_t>> retired_buffers;
for (const auto& [begin, id]: m_buffers) {
const auto& buffer = m_slot_buffers[id];
if (vaddr < begin + buffer.Size() && begin < vaddr + size) {
retired_buffers.emplace_back(begin, buffer.Size());
}
}
for (const auto& [begin, id]: m_buffers) {
const auto& buffer = m_slot_buffers[id];
if (vaddr >= begin + buffer.Size() || begin >= vaddr + size ||
!m_memory_tracker.IsRegionGpuModified(begin, buffer.Size())) {
continue;
}
if (!m_gpu_modified_ranges.Intersects(begin, buffer.Size())) {
EXIT("BufferCache: GPU-modified buffer has no dirty ranges\n");
}
modified_buffers.emplace_back(begin, buffer.Size());
}
for (const auto& [begin, bytes]: modified_buffers) {
auto owner = m_buffers.find(begin);
if (owner == m_buffers.end() || m_slot_buffers[owner->second].Size() != bytes) {
EXIT("BufferCache: unmap owner changed during collection\n");
}
auto& buffer = m_slot_buffers[owner->second];
m_memory_tracker.ForEachDownloadRange<false>(
begin, buffer.Size(),
[&](uint64_t address, uint64_t bytes) noexcept {
m_memory_tracker.ValidateGpuDirtyPages(m_gpu_modified_ranges, address, bytes,
"unmap");
},
[&](uint64_t address, uint64_t bytes) noexcept {
for (const auto& range: m_gpu_modified_ranges.Intersections(address, bytes)) {
copies.push_back({&buffer, range.address - begin, range.address, range.size});
}
});
}
if (!copies.empty()) {
DownloadBufferMemory(copies);
}
for (const auto& [begin, bytes]: modified_buffers) {
m_gpu_modified_ranges.Subtract(begin, bytes);
m_memory_tracker.UnmarkRegionAsGpuModified(begin, bytes);
}
for (const auto& [begin, bytes]: retired_buffers) {
m_memory_tracker.MarkRegionAsCpuModified(begin, bytes);
}
if (m_gpu_modified_ranges.Intersects(vaddr, size)) {
EXIT("BufferCache: unmap retained dirty byte ranges\n");
}
m_memory_tracker.UntrackMemory(vaddr, size);
for (const auto& [begin, bytes]: retired_buffers) {
(void)bytes;
const auto found = m_buffers.find(begin);
if (found != m_buffers.end()) {
DeleteBuffer(found->second);
}
}
}
BufferId BufferCache::FindBuffer(uint64_t vaddr, uint64_t size) {
if (vaddr == 0) {
return NULL_BUFFER_ID;