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#pragma once
#include "defines.hpp"
#include "vertex_stream.hpp"
#include "../std/vector.hpp"
#include "../std/string.hpp"
namespace graphics
{
struct VertexStream;
/// Single attribute of vertex.
struct VertexAttrib
{
ESemantic m_semantic;
size_t m_offset;
EDataType m_elemType;
size_t m_elemCount;
size_t m_stride;
VertexAttrib(ESemantic semantic,
size_t offset,
EDataType elemType,
size_t elemCount,
size_t stride);
void initStream(VertexStream * vs,
unsigned char * v,
unsigned stride) const;
};
/// Vertex structure declaration.
class VertexDecl
{
private:
vector<VertexAttrib> m_attrs;
size_t m_elemSize;
public:
/// constructor.
VertexDecl(VertexAttrib const * attrs, size_t cnt);
/// get the number of attributes.
size_t attrCount() const;
/// get vertex attribute.
VertexAttrib const * getAttr(size_t i) const;
/// size of single element.
size_t elemSize() const;
/// initialize vertex stream
void initStream(VertexStream * vs, unsigned char * v) const;
};
}
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