public void SampleCubeMap(WMath.Vector _View, CubeMapSampler _Sampler, out byte _R, out byte _G, out byte _B)
{
AbsView.Set(Math.Abs(_View.x), Math.Abs(_View.y), Math.Abs(_View.z));
float MaxComponent = Math.Max(Math.Max(AbsView.x, AbsView.y), AbsView.z);
fXYZ.Set(_View.x / MaxComponent, _View.y / MaxComponent, _View.z / MaxComponent);
int FaceIndex = 0;
if (Math.Abs(fXYZ.x) > 1.0 - 1e-6)
{ // +X or -X
if (_View.x > 0.0)
{
FaceIndex = 0;
fXY.Set(-fXYZ.z, fXYZ.y);
}
else
{
FaceIndex = 1;
fXY.Set(fXYZ.z, fXYZ.y);
}
}
else if (Math.Abs(fXYZ.y) > 1.0 - 1e-6)
{ // +Y or -Y
if (_View.y > 0.0)
{
FaceIndex = 2;
fXY.Set(fXYZ.x, -fXYZ.z);
}
else
{
FaceIndex = 3;
fXY.Set(fXYZ.x, fXYZ.z);
}
}
else // if ( Math.Abs( fXYZ.z ) > 1.0-1e-6 )
{ // +Z or -Z
if (_View.z > 0.0)
{
FaceIndex = 4;
fXY.Set(fXYZ.x, fXYZ.y);
}
else
{
FaceIndex = 5;
fXY.Set(-fXYZ.x, fXYZ.y);
}
}
fXY.y = -fXY.y;
int X = (int)(Probe.CUBE_MAP_SIZE * 0.5 * (1.0 + fXY.x));
int Y = (int)(Probe.CUBE_MAP_SIZE * 0.5 * (1.0 + fXY.y));
// if ( X < 0 || X > Probe.CUBE_MAP_SIZE-1 )
// throw new Exception();
// if ( Y < 0 || Y > Probe.CUBE_MAP_SIZE-1 )
// throw new Exception();
X = Math.Min(Probe.CUBE_MAP_SIZE - 1, X);
Y = Math.Min(Probe.CUBE_MAP_SIZE - 1, Y);
Probe.Pixel[,] CubeMapFace = m_Probe.m_CubeMap[FaceIndex];
_Sampler(CubeMapFace[X, Y], out _R, out _G, out _B);
}
private void CubeMapSamplerSH(Probe.Pixel _Pixel, out byte _R, out byte _G, out byte _B)
{
WMath.Vector Dir = _Pixel.View;
// Dot the SH together
WMath.Vector Color = WMath.Vector.Zero;
if (m_IsolateSet)
{
float Factor = 1.0f;
if (m_bShowSHDynamic)
{
for (int i = 0; i < 9; i++)
{
Color += (float)_Pixel.SHCoeffs[i] * m_Probe.m_Sets[m_IsolatedSetIndex].SH[i];
}
Factor = m_bNormalizeSH ? 2.0f * m_Probe.m_Sets[m_IsolatedSetIndex].SH[0].Max() : 1.0f;
}
if (m_bShowSHEmissive)
{
int EmissiveSetIndex = Math.Min(m_IsolatedSetIndex, m_Probe.m_EmissiveSets.Length - 1);
if (EmissiveSetIndex >= 0)
{
for (int i = 0; i < 9; i++)
{
Color += (float)_Pixel.SHCoeffs[i] * m_Probe.m_EmissiveSets[EmissiveSetIndex].SH[i];
}
}
Factor = m_bNormalizeSH ? 2.0f * m_Probe.m_EmissiveSets[EmissiveSetIndex].SH[0].Max() : 1.0f;
}
// Color *= 100.0f;
Color *= 1.0f / Factor;
}
else
{
float Factor = 0.0f;
if (m_bShowSHStatic)
{
for (int i = 0; i < 9; i++)
{
Color += (float)_Pixel.SHCoeffs[i] * m_SHStatic[i];
}
Factor = Math.Max(Factor, m_SHStatic[0].Max());
}
if (m_bShowSHDynamic)
{
for (int i = 0; i < 9; i++)
{
Color += (float)_Pixel.SHCoeffs[i] * m_SHDynamic[i];
}
Factor = Math.Max(Factor, m_SHDynamic[0].Max());
}
if (m_bShowSHEmissive)
{
for (int i = 0; i < 9; i++)
{
Color += (float)_Pixel.SHCoeffs[i] * m_SHEmissive[i];
}
Factor = Math.Max(Factor, m_SHEmissive[0].Max());
}
if (m_bShowSHOcclusion)
{
for (int i = 0; i < 9; i++)
{
Color += (float)_Pixel.SHCoeffs[i] * m_SHOcclusion[i] * WMath.Vector.One;
}
Factor = Math.Max(Factor, m_SHOcclusion[0]);
}
// Color *= 50.0f;
Color *= m_bNormalizeSH ? 1.0f / Factor : 1.0f;
}
if (Color.x < 0.0f || Color.y < 0.0f || Color.z < 0.0f)
{
Color.Set(1, 0, 1);
}
_R = (byte)Math.Min(255, 255 * Color.x);
_G = (byte)Math.Min(255, 255 * Color.y);
_B = (byte)Math.Min(255, 255 * Color.z);
}
