56 lines
3.0 KiB
C++
56 lines
3.0 KiB
C++
#ifndef HGL_GRAPH_VERTEX_ATTRIB_DATA_INCLUDE
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#define HGL_GRAPH_VERTEX_ATTRIB_DATA_INCLUDE
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#include<hgl/graph/vulkan/VK.h>
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namespace hgl
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{
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namespace graph
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{
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/**
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* 顶点属性数据
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*/
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class VertexAttribData ///顶点属性数据
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{
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void *mem_data; ///<内存中的数据
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protected:
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const uint32_t dc_num; ///<每个数据成员数(比如二维坐标为2、三维坐标为3)
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const uint32_t comp_stride; ///<单个成员数据字节数
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uint32_t count; ///<数据个数
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const uint32_t stride; ///<每组数据字节数
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const uint32_t total_bytes; ///<字节数
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VkFormat vk_format; ///<在Vulkan中的数据类型
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void *mem_end; ///<内存数据区访问结束地址
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public:
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VertexAttribData(uint32_t c,uint32_t dc,uint32_t cs,VkFormat fmt):count(c),dc_num(dc),comp_stride(cs),stride(dc*cs),total_bytes(dc*cs*c),vk_format(fmt)
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{
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mem_data = hgl_malloc(total_bytes); //在很多情况下,hgl_malloc分配的内存是对齐的,这样有效率上的提升
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mem_end = ((char *)mem_data) + total_bytes;
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}
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virtual ~VertexAttribData()
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{
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if(mem_data)
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hgl_free(mem_data);
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}
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const VkFormat GetVulkanFormat ()const{return vk_format;} ///<取得数据类型
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const uint32_t GetDataBytes ()const{return comp_stride;} ///<取得每数据字节数
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const uint32_t GetComponent ()const{return dc_num;} ///<取数缓冲区元数据数量
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const uint32_t GetCount ()const{return count;} ///<取得数据数量
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const uint32_t GetStride ()const{return stride;} ///<取得每一组数据字节数
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void * GetData ()const{return mem_data;} ///<取得数据指针
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const uint32_t GetTotalBytes ()const{return total_bytes;} ///<取得数据字节数
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};//class VertexAttribData
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using VAD=VertexAttribData;
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_VERTEX_ATTRIB_DATA_INCLUDE
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