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进一步完善VBO

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This commit is contained in:
hyzboy 2019-03-18 22:10:44 +08:00
parent 0663cd8de1
commit 8d2a4b33f0
2 changed files with 54 additions and 23 deletions
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58
inc/hgl/graph/VertexBufferObject.h
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@ -16,51 +16,77 @@ namespace hgl
GLuint buffer_index;
GLenum buffer_type;
GLenum data_type;
uint data_bytes;
uint data_comp;
GLsizeiptr data_count;
GLsizeiptr buffer_bytes;
GLenum user_pattern; ///<数据存储区使用模式
void * data;
void * data_end;
GLenum buffer_type; ///<缓冲区类型(GL_ARRAY_BUFFER,GL_ELEMENT_ARRAY_BUFFER等)
GLenum user_pattern; ///<数据存储区使用模式(GL_STATIC_DRAW,GL_DYNAMIC_DRAW等)
GLenum data_type; ///<单个数据类型 (GL_BYTE,GL_UNSIGNED_SHORT,GL_FLOAT等)
uint data_bytes; ///<单个数据字节数 (GL_BYTE为1,GL_UNSIGNED_SHORT为2GL_FLOAT为4等)
uint data_comp; ///<数据成员数 (1/2/3/4，如2D纹理坐标用2，3D坐标/法线用3)
GLsizeiptr data_count; ///<数据数量
GLsizeiptr total_bytes; ///<数据总字节数
public:
VertexBufferObject(const GLuint index,
const GLenum &buf_type,
const GLenum &dsup,
const uint &dt,const uint &dbytes,const uint &dcm,
const GLsizeiptr &count,
const GLenum &dsup)
const GLsizeiptr &count)
{
buffer_index=index;
buffer_type=buf_type;
user_pattern=dsup;
data_type=dt;
data_bytes=dbytes;
data_comp=dcm;
data_count=count;
buffer_bytes=data_bytes*data_comp*data_count;
user_pattern=dsup;
total_bytes=data_bytes*data_comp*data_count;
}
virtual ~VertexBufferObject()=default;
GLuint GetBuffer ()const{return buffer_index;}
GLsizeiptr GetBufferBytes ()const{return buffer_bytes;}
public:
GLuint GetBuffer ()const {return buffer_index;} ///<取得OpenGL缓冲区
GLenum GetBufferType ()const {return buffer_type;} ///<取得缓冲区类型
GLenum GetUserPattern ()const {return user_pattern;} ///<取得缓冲区使用方法
GLenum GetDataType ()const {return data_type;} ///<取得数据类型
uint GetComponent ()const {return data_comp;} ///<取数每一组数据中的数据数量
uint GetStride ()const {return data_comp*data_bytes;} ///<取得每一组数据字节数
GLsizeiptr GetCount ()const {return data_count;} ///<取得数据数量
GLsizeiptr GetTotalBytes ()const {return total_bytes;} ///<取得数据总字节数
void * GetData () {return data;} ///<取得数据指针
void * GetData (const uint pos) {return ((char *)data)+data_bytes*pos;} ///<取得数据指针
public:
virtual void Update()=0; ///<向缓冲区提交所有数据
virtual void Change(const GLsizeiptr start,const GLsizeiptr size)=0; ///<向缓冲区提交部分数据
virtual void Change(const GLsizeiptr start,const GLsizeiptr size,const void *)=0; ///<向缓冲区提交部分数据
};//class VertexBufferObject
/**
* 创建一个VBO对象
* @param buf_type 缓冲区类型(GL_ARRAY_BUFFER,GL_ELEMENT_ARRAY_BUFFER等)
* @param dsup 数据存储区使用模式(GL_STATIC_DRAW,GL_DYNAMIC_DRAW等)
* @param data_type 单个数据类型 (GL_BYTE,GL_UNSIGNED_SHORT,GL_FLOAT等)
* @param data_bytes 单个数据字节数 (GL_BYTE为1,GL_UNSIGNED_SHORT为2GL_FLOAT为4等)
* @param data_comp 数据成员数 (1/2/3/4，如2D纹理坐标用2，3D坐标/法线用3)
* @param size 数据数量
* @param dsup 数据存储区使用模式(GL_STATIC_DRAW,GL_DYNAMIC_DRAW等)
*/
VertexBufferObject *CreateVBO( const GLenum &buf_type,
const GLenum &dsup,
const uint &data_type,const uint &data_bytes,const uint &data_comp,
const GLsizeiptr &size,
const GLenum &dsup);
const GLsizeiptr &size);
}//namespace graph
}//namespace hgl
#endif//HGL_GRAPH_VERTEX_BUFFER_OBJECT_INCLUDE

17
src/RenderDriver/VertexBufferObject.cpp
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@ -14,14 +14,19 @@ namespace hgl
glDeleteBuffers(1,&buffer_index);
}
void Set(GLsizei size,void *data)
void Update() override
{
glNamedBufferData(buffer_index,size,data,user_pattern);
glNamedBufferData(buffer_index,total_bytes,data,user_pattern);
}
void Change(GLintptr start,GLsizei size,void *data)
void Change(const GLsizeiptr start,const GLsizeiptr size) override
{
glNamedBufferSubData(buffer_index,start,size,data);
glNamedBufferSubData(buffer_index,start,size,((char *)data)+start);
}
void Change(const GLsizeiptr start,const GLsizeiptr size,const void *new_data) override
{
glNamedBufferSubData(buffer_index,start,size,new_data);
}
};//class VertexBufferControlDSA
@ -33,9 +38,9 @@ namespace hgl
}
VertexBufferObject *CreateVBO(const GLenum &buf_type,
const GLenum &dsup,
const uint &data_type,const uint &data_bytes,const uint &data_comp,
const GLsizeiptr &size,
const GLenum &dsup)
const GLsizeiptr &size)
{
}
}//namespace graph