96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
#include<hgl/graph/VertexBuffer.h>
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#include<hgl/graph/VertexArray.h>
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#include<GLEWCore/glew.h>
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#include"VertexBufferControl.h"
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#include<hgl/graph/RenderDriver.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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VertexBufferControl *CreateVertexBufferControlDSA(uint);
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VertexBufferControl *CreateVertexBufferControlBind(uint);
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namespace
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{
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static VertexBufferControl *(*CreateVertexBufferControl)(uint)=nullptr;
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void InitVertexBufferAPI()
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{
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if(IsSupportDSA())
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CreateVertexBufferControl=CreateVertexBufferControlDSA;
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else
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CreateVertexBufferControl=CreateVertexBufferControlBind;
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}
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}//namespace
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void VertexBufferBase::SetDataSize(int size)
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{
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if (total_bytes == size)return;
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total_bytes = size;
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if (mem_data)
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mem_data = hgl_realloc(mem_data, size);
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else
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mem_data = hgl_malloc(size);
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mem_end = ((char *)mem_data) + size;
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}
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VertexBufferBase::VertexBufferBase(uint type,uint dt,uint dbyte,uint dcm,uint size,uint usage)
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{
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vb_type =type;
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data_type =dt;
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data_bytes =dbyte;
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dc_num =dcm;
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count =size;
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total_bytes =dcm*size*dbyte;
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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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data_usage =usage;
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if(!CreateVertexBufferControl)
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InitVertexBufferAPI();
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vbc=CreateVertexBufferControl(type);
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}
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VertexBufferBase::~VertexBufferBase()
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{
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hgl_free(mem_data);
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SAFE_CLEAR(vbc);
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}
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void VertexBufferBase::Update()
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{
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if(!vbc)return;
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vbc->Set(total_bytes,mem_data,data_usage);
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}
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void VertexBufferBase::Change(int start, int size, void *data)
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{
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if (!vbc)return;
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vbc->Change(start,size,data);
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}
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// void VertexBufferBase::BindVertexBuffer()
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// {
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// if(!video_buffer_type)return;
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//
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// glBindBuffer(video_buffer_type,video_buffer_index);
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// }
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int VertexBufferBase::GetBufferIndex()const
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{
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return vbc?vbc->GetIndex():-1;
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}
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}//namespace graph
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}//namespace hgl
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