implemented basic shader expressions

src/Engine/Graphics/Vulkan/CMakeLists.txt

@@ -29,7 +29,7 @@ target_sources(Engine
 		VulkanQueue.h
 		VulkanQueue.cpp
 		VulkanViewport.cpp)
-		
+
 target_sources(Engine
 	PUBLIC FILE_SET HEADERS
 		FILES

src/Engine/Graphics/Vulkan/VulkanBuffer.cpp

@@ -235,7 +235,7 @@ void *ShaderBuffer::lockRegion(uint64 regionOffset, uint64 regionSize, bool bWri
 
         graphics->getQueueCommands(owner)->submitCommands();
         vkQueueWaitIdle(graphics->getQueueCommands(owner)->getQueue()->getHandle());
-
+        stagingBuffer->getMappedPointer(); // this maps the memory if not mapped already
         stagingBuffer->flushMappedMemory();
         pending.stagingBuffer = stagingBuffer;