Move and rename the MemoryAccesses class to MemoryAccessTracker.

1 files changed, 30 insertions, 0 deletions

diff --git a/src/video_core/debug_utils/debug_utils.h b/src/video_core/debug_utils/debug_utils.h
index 7df941619..8338cc857 100644
--- a/src/video_core/debug_utils/debug_utils.h
+++ b/src/video_core/debug_utils/debug_utils.h
@@ -206,6 +206,36 @@ void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data);
 
 void DumpTevStageConfig(const std::array<Pica::Regs::TevStageConfig,6>& stages);
 
+/**
+ * Used in the vertex loader to merge access records. TODO: Investigate if actually useful.
+ */
+class MemoryAccessTracker {
+    /// Combine overlapping and close ranges
+    void SimplifyRanges() {
+        for (auto it = ranges.begin(); it != ranges.end(); ++it) {
+            // NOTE: We add 32 to the range end address to make sure "close" ranges are combined, too
+            auto it2 = std::next(it);
+            while (it2 != ranges.end() && it->first + it->second + 32 >= it2->first) {
+                it->second = std::max(it->second, it2->first + it2->second - it->first);
+                it2 = ranges.erase(it2);
+            }
+        }
+    }
+
+public:
+    /// Record a particular memory access in the list
+    void AddAccess(u32 paddr, u32 size) {
+        // Create new range or extend existing one
+        ranges[paddr] = std::max(ranges[paddr], size);
+
+        // Simplify ranges...
+        SimplifyRanges();
+    }
+
+    /// Map of accessed ranges (mapping start address to range size)
+    std::map<u32, u32> ranges;
+};
+
 } // namespace
 
 } // namespace