QueryCache: Implement dependant queries.

src/video_core/query_cache/query_base.h

@@ -18,6 +18,7 @@ enum class QueryFlagBits : u32 {
     IsInvalidated = 1 << 6,      ///< Indicates the value of th query has been nullified.
     IsOrphan = 1 << 7,           ///< Indicates the query has not been set by a guest query.
     IsFence = 1 << 8,            ///< Indicates the query is a fence.
+    IsQueuedForAsyncFlush = 1 <<9,///< Indicates that the query can be flushed at any moment
 };
 DECLARE_ENUM_FLAG_OPERATORS(QueryFlagBits)
 

src/video_core/query_cache/query_cache.h

@@ -489,8 +489,22 @@ void QueryCacheBase<Traits>::PopAsyncFlushes() {
     if (mask == 0) {
         return;
     }
-    impl->ForEachStreamerIn(mask,
-                            [](StreamerInterface* streamer) { streamer->PopUnsyncedQueries(); });
+    u64 ran_mask = 0;
+    u64 next_phase = 0;
+    while (mask) {
+        impl->ForEachStreamerIn(mask, [&mask, &ran_mask, &next_phase](StreamerInterface* streamer) {
+            u64 dep_mask = streamer->GetDependenceMask();
+            if ((dep_mask & ~ran_mask) != 0) {
+                next_phase |= dep_mask;
+                return;
+            }
+            u64 index = streamer->GetId();
+            ran_mask |= (1ULL << index);
+            mask &= ~(1ULL << index);
+            streamer->PopUnsyncedQueries();
+        });
+        ran_mask |= next_phase;
+    }
 }
 
 // Invalidation

src/video_core/query_cache/query_stream.h

@@ -70,6 +70,10 @@ public:
         return id;
     }
 
+    u64 GetDependenceMask() const {
+        return dependance_mask;
+    }
+
 protected:
     const size_t id;
     const u64 dependance_mask;
@@ -78,7 +82,7 @@ protected:
 template <typename QueryType>
 class SimpleStreamer : public StreamerInterface {
 public:
-    SimpleStreamer(size_t id_) : StreamerInterface{id_} {}
+    SimpleStreamer(size_t id_, u64 dependance_mask_ = 0) : StreamerInterface{id_, dependance_mask_} {}
     virtual ~SimpleStreamer() = default;
 
 protected: