wip

src/game/Global.cpp

@@ -37,16 +37,30 @@ namespace Game
         GameInst = &instance;
     }
 
-    void* AllocateScratch(size_t byteCount, size_t align)
+    uint8_t* AllocateScratch(size_t byteCount, size_t align)
     {
         size_t offset = GetInstance().UsedScratchAmount;
-        uint8_t* base = static_cast<uint8_t*>(GetShared().Game.TransientStorage);
+        uint8_t* base = GetShared().Game.TransientArena.Ptr;
         uint8_t* current = base + offset;
         size_t offsetAligned = ((offset + align - 1) / align) * align;
         uint8_t* ptrAligned = base + offsetAligned;
         size_t newOffset = offsetAligned + byteCount;
-        if (newOffset > GetShared().Game.TransientStorageSize) return nullptr;
+        if (newOffset > GetShared().Game.TransientArena.Size) return nullptr;
         GetInstance().UsedScratchAmount = newOffset;
-        return reinterpret_cast<void*>(ptrAligned);
+        GetShared().Game.TransientArena.LastAllocSize = byteCount;
+        return ptrAligned;
+    }
+
+    bool ResizeLastScratchAlloc(size_t newByteCount)
+    {
+        auto& arena = GetShared().Game.TransientArena;
+        if (newByteCount > arena.LastAllocSize)
+        {
+            LOG_ERROR("Can't resize to more than previous size!");
+            return false;
+        }
+        arena.Ptr -= arena.LastAllocSize;
+        arena.Ptr += newByteCount;
+        return true;
     }
 } // namespace Game