void VBlobShadowShader::UpdateShadow(const VBlobShadow *pShadow)
{
if (m_iShadowTexSampler>=0)
{
VStateGroupTexture *pStateGroupTexture = GetStateGroupTexture(VSS_PixelShader, m_iShadowTexSampler);
if (pStateGroupTexture != NULL)
pStateGroupTexture->m_spCustomTex = pShadow->GetShadowTexture();
}
// update the uv projection planes
const float fSizeX = pShadow->m_ShadowBox.getSizeX();
const float fSizeY = pShadow->m_ShadowBox.getSizeY();
hkvPlane planeU;
planeU.m_vNormal = hkvVec3(1.f/fSizeX, 0, 0);
planeU.m_fNegDist = -planeU.m_vNormal.dot (pShadow->m_ShadowBox.m_vMin);
hkvPlane planeV;
planeV.m_vNormal = hkvVec3(0, 1.f/fSizeY, 0);
planeV.m_fNegDist = -planeV.m_vNormal.dot (pShadow->m_ShadowBox.m_vMin);
GetConstantBuffer(VSS_VertexShader)->SetSingleRegisterF(m_iRegPlaneU, &planeU.m_vNormal.x);
GetConstantBuffer(VSS_VertexShader)->SetSingleRegisterF(m_iRegPlaneV, &planeV.m_vNormal.x);
// shadow color
GetConstantBuffer(VSS_PixelShader)->SetSingleRegisterF(m_iRegColor, pShadow->m_vBlendColor.data);
m_bModified = true;
}
/// \brief
/// For shadowmap lights only: sets the shadowmap texture that will be used to modulate the light's framebuffer contribution.
inline void SetShadowTexture(VTextureObject *pTex)
{
if (m_iSamplerShadowTexture>=0)
{
VStateGroupTexture *pStateGroupTexture = GetStateGroupTexture(VSS_PixelShader, m_iSamplerShadowTexture);
if (pStateGroupTexture != NULL)
pStateGroupTexture->m_spCustomTex = pTex;
}
}