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renderer: simplify image buffer owner lookup

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This commit is contained in:
nmzik
2026-08-18 02:53:20 +02:00
parent fe867d03f6
commit 79e424182b
1 changed files with 18 additions and 26 deletions
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src/graphics/host_gpu/renderer/cache/bufferCache.cpp
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+18 -26
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@@ -527,21 +527,13 @@ ImageBufferSource BufferCache::ObtainBufferForImage(uint64_t vaddr, uint64_t siz
size > TRACKER_ADDRESS_SIZE - vaddr) {
EXIT("BufferCache: invalid image source\n");
}
auto find_owner = [&]() {
auto find_owner = [&]() -> CachedBuffer* {
auto owner = m_buffers.upper_bound(vaddr);
if (owner == m_buffers.begin()) {
return m_buffers.end();
return nullptr;
}
--owner;
return owner->second->buffer->IsInBounds(vaddr, size) ? owner : m_buffers.end();
};
auto has_overlapping_owner = [&]() {
auto owner = m_buffers.lower_bound(vaddr + size);
if (owner == m_buffers.begin()) {
return false;
}
--owner;
return owner->second->vaddr + owner->second->size > vaddr;
return owner->second->buffer->IsInBounds(vaddr, size) ? owner->second.get() : nullptr;
};
{
@@ -552,24 +544,24 @@ ImageBufferSource BufferCache::ObtainBufferForImage(uint64_t vaddr, uint64_t siz
m_memory_tracker.ValidateGpuDirtyOwnership(m_gpu_modified_ranges, vaddr, size,
"image source");
auto owner = find_owner();
if (has_dirty_buffer_source && owner == m_buffers.end()) {
if (!has_overlapping_owner()) {
auto* owner = find_owner();
if (has_dirty_buffer_source && owner == nullptr) {
if (!IsRegionRegistered(vaddr, size)) {
EXIT("BufferCache: GPU-dirty image source has no native buffer\n");
}
auto& cached = GetOrCreateBuffer(m_scheduler.Current(), vaddr, size);
owner = m_buffers.find(cached.vaddr);
if (owner == m_buffers.end() || owner->second.get() != &cached ||
auto& cached = GetOrCreateBuffer(m_scheduler.Current(), vaddr, size);
owner = &cached;
const auto resolved = m_buffers.find(cached.vaddr);
if (resolved == m_buffers.end() || resolved->second.get() != &cached ||
!cached.buffer->IsInBounds(vaddr, size)) {
EXIT("BufferCache: merged image source does not contain the requested range\n");
}
}
if (owner != m_buffers.end() && !cpu_modified &&
(!gpu_modified || has_dirty_buffer_source)) {
owner->second->tick_accessed_last = m_gc_tick;
return {owner->second->buffer.get(), owner->second->buffer->Offset(vaddr)};
if (owner != nullptr && !cpu_modified && (!gpu_modified || has_dirty_buffer_source)) {
owner->tick_accessed_last = m_gc_tick;
return {owner->buffer.get(), owner->buffer->Offset(vaddr)};
}
if (has_dirty_buffer_source && owner == m_buffers.end()) {
if (has_dirty_buffer_source && owner == nullptr) {
EXIT("BufferCache: GPU-dirty image source could not resolve its native owner\n");
}
}
@@ -583,16 +575,16 @@ ImageBufferSource BufferCache::ObtainBufferForImage(uint64_t vaddr, uint64_t siz
const auto dirty = m_gpu_modified_ranges.Intersections(vaddr, size);
const bool has_dirty_buffer_source = !dirty.empty();
auto owner = find_owner();
if (has_dirty_buffer_source && owner == m_buffers.end()) {
auto* owner = find_owner();
if (has_dirty_buffer_source && owner == nullptr) {
EXIT("BufferCache: GPU-dirty image source lost its native owner\n");
}
if (owner == m_buffers.end() ||
if (owner == nullptr ||
(m_memory_tracker.IsRegionGpuModified(vaddr, size) && !has_dirty_buffer_source)) {
return {&m_staging_buffer, stage_offset};
}
auto& cached = *owner->second;
auto& cached = *owner;
cached.tick_accessed_last = m_gc_tick;
std::vector<std::pair<uint64_t, uint64_t>> uploads;
m_memory_tracker.ForEachUploadRange(