add GPUMemory::Flush functions.

src/SceneGraph/Vulkan/VKMemory.cpp

@@ -24,6 +24,19 @@ GPUMemory *GPUDevice::CreateMemory(const VkMemoryRequirements &req,uint32_t prop
     return(new GPUMemory(attr->device,memory,req,index,properties));
 }
 
+GPUMemory::GPUMemory(VkDevice dev,VkDeviceMemory dm,const VkMemoryRequirements &mr,const uint32 i,const uint32_t p)
+{
+    device=dev;
+    memory=dm;
+    req=mr;
+    index=i;
+    properties=p;
+
+    memory_range.sType  =VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
+    memory_range.pNext  =nullptr;
+    memory_range.memory =memory;
+}
+
 GPUMemory::~GPUMemory()
 {
     vkFreeMemory(device,memory,nullptr);
@@ -57,6 +70,14 @@ void GPUMemory::Unmap()
     vkUnmapMemory(device,memory);
 }
 
+void GPUMemory::Flush(VkDeviceSize offset,VkDeviceSize size)
+{
+    memory_range.offset =offset;
+    memory_range.size   =size;
+
+    vkFlushMappedMemoryRanges(device,1,&memory_range);
+}
+
 bool GPUMemory::Write(const void *ptr,VkDeviceSize start,VkDeviceSize size)
 {
     if(!ptr)return(false);