Cleanups for the new command pool system.

Author: achalpandeyy

include/nbl/asset/ICommandBuffer.h

@@ -211,7 +211,7 @@ class NBL_API ICommandBuffer
 
     E_LEVEL getLevel() const { return m_level; }
 
-    // hm now i think having begin(), reset() and end() as command buffer API is a little weird
+    // hm now i think having an ICPUCommandBuffer is weird, maybe we should have a rendergraph
 
     virtual bool begin(core::bitflag<E_USAGE> flags, const SInheritanceInfo* inheritanceInfo = nullptr) = 0;
     virtual bool reset(core::bitflag<E_RESET_FLAGS> flags) = 0;

include/nbl/video/IGPUCommandBuffer.h

@@ -256,9 +256,8 @@ class NBL_API IGPUCommandBuffer :
         m_resetCheckedStamp = m_cmdpool->getResetCounter();
         m_state = ES_INITIAL;
 
-        m_segmentListHeadItr.cmd = nullptr;
-        m_segmentListHeadItr.segment = nullptr;
-        m_segmentListTail = nullptr;
+        m_commandList.head = nullptr;
+        m_commandList.tail = nullptr;
 
         checkForParentPoolReset_impl();
 
@@ -267,19 +266,25 @@ class NBL_API IGPUCommandBuffer :
 
     inline void releaseResourcesBackToPool()
     {
-        m_cmdpool->deleteCommandSegmentList(m_segmentListHeadItr, m_segmentListTail);
+        deleteCommandList();
         releaseResourcesBackToPool_impl();
     }
 
+    inline void deleteCommandList()
+    {
+        m_cmdpool->m_commandListPool.deleteList(m_commandList.head);
+        m_commandList.head = nullptr;
+        m_commandList.tail = nullptr;
+    }
+
     uint64_t m_resetCheckedStamp = 0;
 
     // This bound descriptor set record doesn't include the descriptor sets whose layout has _any_ one of its bindings
     // created with IGPUDescriptorSetLayout::SBinding::E_CREATE_FLAGS::ECF_UPDATE_AFTER_BIND_BIT
     // or IGPUDescriptorSetLayout::SBinding::E_CREATE_FLAGS::ECF_UPDATE_UNUSED_WHILE_PENDING_BIT.
     core::unordered_map<const IGPUDescriptorSet*, uint64_t> m_boundDescriptorSetsRecord;
 
-    IGPUCommandPool::CCommandSegment::Iterator m_segmentListHeadItr = {};
-    IGPUCommandPool::CCommandSegment* m_segmentListTail = nullptr;
+    IGPUCommandPool::CCommandSegmentListPool::SCommandSegmentList m_commandList;
 };
 
 }