public void UpdateShadows()
{
m_projectorInterface.GetClipPlanes(ref m_clipPlanes, null);
for (var i = 0; i < m_shadowCasterCount; ++i)
{
m_prevShadowCasters[i] = m_shadowCasters[i];
}
for (var i = 0; i < m_shadowCasterCount; ++i)
{
var caster = m_shadowCasters[i];
if ((m_shadowCasterMask.value & (1 << caster.gameObject.layer)) == 0)
{
RemoveCaster(m_shadowCasters[i]);
--i;
}
if (!IsInProjectionVolume(caster))
{
RemoveCaster(caster);
--i;
}
}
var casters = LightProjectorShadowCaster.GetAllCasters();
for (var i = 0; i < casters.Count && m_shadowCasterCount < m_maxShadowNum; ++i)
{
var caster = casters[i];
if ((m_shadowCasterMask.value & (1 << caster.gameObject.layer)) == 0)
{
continue;
}
var alreadyExist = false;
for (var j = 0; j < m_prevShadowCasterCount; ++j)
{
if (caster == m_prevShadowCasters[j])
{
alreadyExist = true;
break;
}
}
if ((!alreadyExist) && IsInProjectionVolume(caster))
{
AddCaster(caster);
}
}
Vector3 lightPos;
if (m_projectorInterface.isOrthographic)
{
lightPos = m_projectorInterface.direction;
}
else
{
lightPos = m_projectorInterface.position;
}
for (var i = 0; i < m_shadowCasterCount; ++i)
{
Matrix4x4 mat;
if (m_projectorInterface.isOrthographic)
{
mat = m_shadowCasters[i].GetOrthoProjectionMatrix(lightPos);
}
else
{
mat = m_shadowCasters[i].GetProjectionMatrix(lightPos);
}
m_material.SetMatrix(s_shadowProjectionMatrixPropertyIDs[i], mat);
m_material.SetTexture(s_shadowTexturePropertyIDs[i], m_shadowCasters[i].shadowTexture);
}
if (m_prevShadowCasterCount != m_shadowCasterCount)
{
m_material.DisableKeyword(s_shadowNumKeyword[m_prevShadowCasterCount]);
m_material.EnableKeyword(s_shadowNumKeyword[m_shadowCasterCount]);
m_prevShadowCasterCount = m_shadowCasterCount;
}
}
