void MultiResSILLayer::ExtractVPLs(CameraPtr const & rsm_camera, LightSourcePtr const & light)
{
rsm_texs_[0]->BuildMipSubLevels();
rsm_texs_[1]->BuildMipSubLevels();
rsm_to_depth_derivate_pp_->Apply();
float4x4 ls_to_es = rsm_camera->InverseViewMatrix() * g_buffer_camera_->ViewMatrix();
float4x4 const & inv_proj = rsm_camera->InverseProjMatrix();
LightSource::LightType type = light->Type();
float4 vpl_params(static_cast<float>(VPL_COUNT), 2.0f,
static_cast<float>(MIN_RSM_MIPMAP_SIZE), static_cast<float>(MIN_RSM_MIPMAP_SIZE * MIN_RSM_MIPMAP_SIZE));
rsm_to_vpls_pps_[type]->SetParam(0, ls_to_es);
rsm_to_vpls_pps_[type]->SetParam(1, vpl_params);
rsm_to_vpls_pps_[type]->SetParam(2, light->Color());
rsm_to_vpls_pps_[type]->SetParam(3, light->CosOuterInner());
rsm_to_vpls_pps_[type]->SetParam(4, light->Falloff());
rsm_to_vpls_pps_[type]->SetParam(5, g_buffer_camera_->InverseViewMatrix());
float3 upper_left = MathLib::transform_coord(float3(-1, +1, 1), inv_proj);
float3 upper_right = MathLib::transform_coord(float3(+1, +1, 1), inv_proj);
float3 lower_left = MathLib::transform_coord(float3(-1, -1, 1), inv_proj);
rsm_to_vpls_pps_[type]->SetParam(6, upper_left);
rsm_to_vpls_pps_[type]->SetParam(7, upper_right - upper_left);
rsm_to_vpls_pps_[type]->SetParam(8, lower_left - upper_left);
rsm_to_vpls_pps_[type]->SetParam(9, int2(1, 0));
rsm_to_vpls_pps_[type]->SetParam(10, 0.12f * rsm_camera->FarPlane());
rsm_to_vpls_pps_[type]->SetParam(11, static_cast<float>(rsm_texs_[0]->NumMipMaps() - 1));
rsm_to_vpls_pps_[type]->Apply();
}
void SceneObjectLightSourceProxy::Init(LightSourcePtr const & light,
std::function<StaticMeshPtr(RenderModelPtr const &, std::wstring const &)> CreateMeshFactoryFunc)
{
std::string mesh_name;
switch (light->Type())
{
case LightSource::LT_Ambient:
mesh_name = "ambient_light_proxy.meshml";
break;
case LightSource::LT_Point:
case LightSource::LT_SphereArea:
mesh_name = "point_light_proxy.meshml";
break;
case LightSource::LT_Directional:
case LightSource::LT_Sun:
mesh_name = "directional_light_proxy.meshml";
break;
case LightSource::LT_Spot:
mesh_name = "spot_light_proxy.meshml";
break;
case LightSource::LT_TubeArea:
mesh_name = "tube_light_proxy.meshml";
break;
default:
BOOST_ASSERT(false);
break;
}
RenderModelPtr light_model = SyncLoadModel(mesh_name.c_str(), EAH_GPU_Read | EAH_Immutable,
CreateModelFactory<RenderModel>(), CreateMeshFactoryFunc);
this->Init(light, light_model);
}