common: pass-through hash for integer and pointer keys; RangeSet::Intersects

Common::unordered_map/set defaulted to std::hash, a byte-wise FNV-1a on MSVC for
integers and pointers, which boost's flat containers then mix again: the GPU thread's
page maps (shader and query cache invalidation, per inline upload) spent ~1% in it.
Integer and pointer keys now go through as they are and boost mixes them.
BufferCache::IsRegionGpuModified visited every GPU-written range inside the query just
to answer yes or no; without per-fence downloads those ranges stay fragmented and it was
~4% of title 1's GPU thread (inline uploads). RangeSet::Intersects answers with one
lookup. Inline uploads: 10.5% -> 7.5% of the GPU thread.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/common/range_sets.h b/src/common/range_sets.h
index f8fcee4837..e5cb53b058 100644
--- a/src/common/range_sets.h
+++ b/src/common/range_sets.h
@@ -26,6 +26,9 @@ public:
     void Clear();
     bool Empty() const;
 
+    /// Whether any range overlaps [base_address, base_address + size): one lookup.
+    bool Intersects(AddressType base_address, size_t size) const;
+
     template <typename Func>
     void ForEach(Func&& func) const;