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#pragma once
namespace graphics
{
template <typename T>
struct PosField
{
T * m_x;
unsigned short m_xStride;
T * m_y;
unsigned short m_yStride;
T * m_z;
unsigned short m_zStride;
T * m_w;
unsigned short m_wStride;
PosField() : m_x(0),
m_xStride(0),
m_y(0),
m_yStride(0),
m_z(0),
m_zStride(0),
m_w(0),
m_wStride(0)
{}
template <typename U>
void copyFrom(PosField<U> const & u)
{
if (m_x && u.m_x)
*m_x = static_cast<T>(*u.m_x);
if (m_y && u.m_y)
*m_y = static_cast<T>(*u.m_y);
if (m_z && u.m_z)
*m_z = static_cast<T>(*u.m_z);
if (m_w && u.m_w)
*m_w = static_cast<T>(*u.m_w);
}
void advance(unsigned cnt)
{
if (m_x)
m_x = reinterpret_cast<T*>(reinterpret_cast<unsigned char*>(m_x) + m_xStride * cnt);
if (m_y)
m_y = reinterpret_cast<T*>(reinterpret_cast<unsigned char*>(m_y) + m_yStride * cnt);
if (m_z)
m_z = reinterpret_cast<T*>(reinterpret_cast<unsigned char*>(m_z) + m_zStride * cnt);
if (m_w)
m_w = reinterpret_cast<T*>(reinterpret_cast<unsigned char*>(m_w) + m_wStride * cnt);
}
};
template <typename T>
struct TexField
{
T * m_u;
unsigned short m_uStride;
T * m_v;
unsigned short m_vStride;
TexField() : m_u(0),
m_uStride(0),
m_v(0),
m_vStride(0)
{}
template <typename U>
void copyFrom(TexField<U> const & u)
{
if (m_u && u.m_u)
*m_u = static_cast<T>(*u.m_u);
if (m_v && u.m_v)
*m_v = static_cast<T>(*u.m_v);
}
void advance(unsigned cnt)
{
if (m_u)
m_u = reinterpret_cast<T*>(reinterpret_cast<unsigned char*>(m_u) + m_uStride * cnt);
if (m_v)
m_v = reinterpret_cast<T*>(reinterpret_cast<unsigned char*>(m_v) + m_vStride * cnt);
}
};
struct VertexStream
{
PosField<float> m_fPos;
PosField<double> m_dPos;
PosField<float> m_fNormal;
PosField<double> m_dNormal;
TexField<float> m_fTex;
TexField<double> m_dTex;
/// should be inline for max performance
inline void copyVertex(VertexStream * dstVS)
{
m_fPos.copyFrom(dstVS->m_fPos);
m_fPos.copyFrom(dstVS->m_dPos);
m_dPos.copyFrom(dstVS->m_fPos);
m_dPos.copyFrom(dstVS->m_dPos);
m_fNormal.copyFrom(dstVS->m_fNormal);
m_fNormal.copyFrom(dstVS->m_dNormal);
m_dNormal.copyFrom(dstVS->m_fNormal);
m_dNormal.copyFrom(dstVS->m_dNormal);
m_fTex.copyFrom(dstVS->m_fTex);
m_fTex.copyFrom(dstVS->m_dTex);
m_dTex.copyFrom(dstVS->m_fTex);
m_dTex.copyFrom(dstVS->m_dTex);
}
/// should be inline for max performance
inline void advanceVertex(unsigned cnt)
{
m_fPos.advance(cnt);
m_dPos.advance(cnt);
m_fNormal.advance(cnt);
m_dNormal.advance(cnt);
m_fTex.advance(cnt);
m_dTex.advance(cnt);
}
};
}
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