textures almost work?

src/game/Global.cpp

@@ -1,7 +1,10 @@
+#include "../engine/Shared.h"
 #include "Global.h"
+#include "Instance.h"
 #include "bx/bx.h"
 #include "bx/math.h"
 #include <cassert>
+#include <cstdint>
 
 namespace
 {
@@ -105,4 +108,15 @@ namespace Game
     {
         GameInst = &instance;
     }
+
+    void* AllocateScratch(size_t byteCount, size_t align = 16)
+    {
+        size_t offset = GetInstance().UsedScratchAmount;
+        uint8_t* base = static_cast<uint8_t*>(GetShared().Game.TransientStorage);
+        uint8_t* current = base + offset;
+        uintptr_t ptrAligned = ((reinterpret_cast<uintptr_t>(current) + align - 1) / align) * align;
+        uintptr_t newOffset = ptrAligned - reinterpret_cast<uintptr_t>(base) + byteCount;
+        if (newOffset > GetShared().Game.TransientStorageSize) return nullptr;
+        return reinterpret_cast<void*>(ptrAligned);
+    }
 } // namespace Game