Implemented vmaClearVirtualBlock

diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index 25f72a5..a9cefa6 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h

@@ -7767,13 +7767,10 @@
     suballoc.offset = 0;

     suballoc.size = size;

     suballoc.type = VMA_SUBALLOCATION_TYPE_FREE;

-    suballoc.userData = VMA_NULL;

 

     VMA_ASSERT(size > VMA_MIN_FREE_SUBALLOCATION_SIZE_TO_REGISTER);

     m_Suballocations.push_back(suballoc);

-    VmaSuballocationList::iterator suballocItem = m_Suballocations.end();

-    --suballocItem;

-    m_FreeSuballocationsBySize.push_back(suballocItem);

+    m_FreeSuballocationsBySize.push_back(m_Suballocations.begin());

 }

 

 bool VmaBlockMetadata_Generic::Validate() const

@@ -8288,7 +8285,22 @@
 

 void VmaBlockMetadata_Generic::Clear()

 {

-    VMA_ASSERT(0 && "TODO implement");

+    const VkDeviceSize size = GetSize();

+

+    VMA_ASSERT(IsVirtual());

+    m_FreeCount = 1;

+    m_SumFreeSize = size;

+    m_Suballocations.clear();

+    m_FreeSuballocationsBySize.clear();

+

+    VmaSuballocation suballoc = {};

+    suballoc.offset = 0;

+    suballoc.size = size;

+    suballoc.type = VMA_SUBALLOCATION_TYPE_FREE;

+    m_Suballocations.push_back(suballoc);

+

+    VMA_ASSERT(size > VMA_MIN_FREE_SUBALLOCATION_SIZE_TO_REGISTER);

+    m_FreeSuballocationsBySize.push_back(m_Suballocations.begin());

 }

 

 void VmaBlockMetadata_Generic::SetAllocationUserData(VkDeviceSize offset, void* userData)


diff --git a/src/Tests.cpp b/src/Tests.cpp
index 2c85b76..0c562df 100644
--- a/src/Tests.cpp
+++ b/src/Tests.cpp

@@ -2799,9 +2799,24 @@
     // # Final cleanup
 
     vmaVirtualFree(block, alloc2Offset);
-
-    //vmaClearVirtualBlock(block);
     vmaDestroyVirtualBlock(block);
+
+    {
+        // Another virtual block, using Clear this time.
+        TEST(vmaCreateVirtualBlock(&blockCreateInfo, &block) == VK_SUCCESS);
+
+        allocCreateInfo = VmaVirtualAllocationCreateInfo{};
+        allocCreateInfo.size = MEGABYTE;
+
+        for(size_t i = 0; i < 8; ++i)
+        {
+            VkDeviceSize offset = 0;
+            TEST(vmaVirtualAllocate(block, &allocCreateInfo, &offset) == VK_SUCCESS);
+        }
+
+        vmaClearVirtualBlock(block);
+        vmaDestroyVirtualBlock(block);
+    }
 }
 
 static void TestAllocationVersusResourceSize()
@@ -6679,7 +6694,7 @@
 {
     wprintf(L"TESTING:\n");
 
-    if(true)
+    if(false)
     {
         ////////////////////////////////////////////////////////////////////////////////
         // Temporarily insert custom tests here: