50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
#ifndef HGL_GRAPH_VULKAN_ARRAY_BUFFER_INCLUDE
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#define HGL_GRAPH_VULKAN_ARRAY_BUFFER_INCLUDE
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#include<hgl/graph/VK.h>
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namespace hgl
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{
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class Collection;
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namespace graph
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{
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class VKMemoryAllocator;
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/**
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* GPU数据阵列缓冲区<br>
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* 它用于储存多份相同格式的数据，常用于多物件渲染，instance等
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*/
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class GPUArrayBuffer
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{
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protected:
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GPUDevice *device;
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VkBufferUsageFlags buffer_usage_flags;
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uint item_length; ///<单个数据长度
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VKMemoryAllocator *vk_ma;
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uint32_t ubo_offset_alignment;
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Collection *coll;
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public:
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GPUArrayBuffer(GPUDevice *dev,VkBufferUsageFlags flags,const uint il);
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virtual ~GPUArrayBuffer();
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const uint32_t GetOffsetAlignment()const{return ubo_offset_alignment;}
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const uint32_t GetUnitSize()const;
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DeviceBuffer * GetBuffer();
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uint32 Alloc(const uint32 max_count); ///<预分配空间
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void Clear();
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void * Map(const uint32 start,const uint32 count);
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void Flush(const uint32 count);
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};//class GPUArrayBuffer
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_VULKAN_ARRAY_BUFFER_INCLUDE
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