72 lines
3.8 KiB
C++
72 lines
3.8 KiB
C++
#ifndef HGL_GRAPH_VERTEX_ARRAY_INCLUDE
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#define HGL_GRAPH_VERTEX_ARRAY_INCLUDE
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#include<hgl/type/List.h>
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#include<hgl/graph/VertexBuffer.h>
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#include<hgl/graph/PixelCompoment.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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* 顶点阵列数据
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*/
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class VertexArray
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{
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protected:
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GLuint vao;
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uint primitive; ///<绘制的图元类型
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ObjectList<VertexBufferBase> vertex_buffer_list; ///<顶点数据缓冲区
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VertexBufferBase *element_buffer;
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VertexBufferBase *position_buffer;
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int position_compoment; ///<位置属性格式
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List<Pair<VertexBufferBase *,PixelCompoment>> color_buffer;
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PixelCompoment color_compoment; ///<颜色属性格式
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VertexBufferBase *color_buffer;
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public:
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VertexArray(uint prim,uint max_vertex_attrib);
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~VertexArray();
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static int GetMaxVertexAttrib();
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const uint GetPrimitive ()const{return primitive;} ///<取得要绘制的图元类型
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const GLuint GetVAO ()const{return vao;} ///<取得VAO对象
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public: //通用顶点缓冲区设置
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int AddVertexAttribBuffer (int shader_location,VertexBufferBase *); ///<设置顶点缓冲区数据
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VertexBufferBase * GetVertexAttribBuffer (int index){return vertex_buffer_list[index];} ///<取得顶点缓冲区数据
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bool ClearVertexAttribBuffer (int index){return vertex_buffer_list.Delete(index);} ///<清除顶点缓冲区数据
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void ClearVertexAttribBuffers (){vertex_buffer_list.Clear();} ///<清除所有顶点缓冲区数据
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public: //特殊缓冲区独立设置函数
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bool SetElementBuffer (VertexBufferBase *eb); ///<设置索引缓冲区数据
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bool SetPositionBuffer (int shader_location,VertexBufferBase *vb); ///<设置位置缓冲区数据
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bool AddColorBuffer (int shader_location,VertexBufferBase *vb,PixelCompoment cf); ///<添加一个颜色缓冲区数据
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int GetPositionCompoment()const{return position_compoment;} ///<取得位置数据成分数量
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PixelCompoment GetColorCompoment ()const{return color_compoment;} ///<取得颜色数据成份格式
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public:
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int GetDrawCount (); ///<取得可绘制的数据总数量
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bool Draw(); ///<绘制
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};//class VertexArray
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//新设计内容，如碰到此处编译失败请在GIT上退回到上一版本
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//1.ColorBuffer可能存在多个，所以上面的SetColorBuffer可能要考虑多个的情况
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//2.将VertexArray类拆分成独立的VAO类和VAOCreater类，所有创建VAO相关的全部放到VAOCreater类中，创建完删除自身并返回VAO对象
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_VERTEX_ARRAY_INCLUDE
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