public static void UpdateSH9FormCubeMap(Cubemap ibl, ref Cubemap curIbl, SH9Struct iblData)
{
if (curIbl != ibl)
{
if (null == ibl)
{
iblData.coefficients = new Vector4[0];
}
else
{
SH9Helper.ModifyTextureReadable(ibl);
iblData.coefficients = new Vector4[9];
if (SphericalHarmonics.CPU_Project_Uniform_9Coeff(ibl, iblData.coefficients))
{
}
}
curIbl = ibl;
}
}
public static void UpdateSH9FormCubeMap(Cubemap ibl, ref Cubemap curIbl, SH9Struct iblData)
{
if (curIbl != ibl)
{
if (null == ibl)
{
iblData.coefficients = new Vector4[0];
}
else
{
SH9Helper.ModifyTextureReadable(ibl);
iblData.coefficients = new Vector4[9];
if (SphericalHarmonics.CPU_Project_Uniform_9Coeff(ibl, iblData.coefficients))
{
/*g_sph0.xyz * 0.2820947917f +
* g_sph1.xyz * 0.4886025119f * v.y;
* g_sph2.xyz * 0.4886025119f * v.z;
* g_sph3.xyz * 0.4886025119f * v.x;
* g_sph4.xyz * 1.0925484306f * v.x * v.y;
* g_sph5.xyz * 1.0925484306f * v.y * v.z;
* g_sph6.xyz * 0.3153915652f * (3.0f * v.z * v.z - 1.0f);
* g_sph7.xyz * 1.0925484306f * v.x * v.z;
* g_sph8.xyz * 0.5462742153f * (v.x * v.x - v.y * v.y);
*/
iblData.coefficients[0] = iblData.coefficients[0] * 0.2820947917f;
iblData.coefficients[1] = iblData.coefficients[1] * 0.4886025119f;
iblData.coefficients[2] = iblData.coefficients[2] * 0.4886025119f;
iblData.coefficients[3] = iblData.coefficients[3] * 0.4886025119f;
iblData.coefficients[4] = iblData.coefficients[4] * 1.0925484306f;
iblData.coefficients[5] = iblData.coefficients[5] * 1.0925484306f;
iblData.coefficients[6] = iblData.coefficients[6] * 0.3153915652f;
iblData.coefficients[7] = iblData.coefficients[7] * 1.0925484306f;
iblData.coefficients[8] = iblData.coefficients[8] * 0.5462742153f;
}
}
curIbl = ibl;
}
}