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 LightManager::addLight(const LightSourcePtr& light) {
switch(light->type()) {
case LS_Directional: mDirectionalLights.push_back(light); break;
case LS_Spot: mSpotLights.push_back(light); break;
case LS_Point: mPointLights.push_back(light); break;
}
}
void LightManager::renderShadowMap(GraphicDevice& gd, SceneManager& scene, const LightSourcePtr& ls) {
const RenderTargetPtr& rt = ls->getShadowMap();
EffectTechniquePtr techniuqe;
if(ls->type() == LS_Directional)
techniuqe = mDepthMapTechnique;
else
techniuqe = mEXPDepthMapTechnique;
mShadowMapRT->attach(ATT_Color0, ls->getShadowMap());
mShadowMapRT->attach(ATT_DepthStencil,
ls->getDSView());
mShadowMapRT->attachToRender();
gd.clear(CM_Color | CM_Depth, color::Transparent, 1.0f, 0);
Shader* fragmentShader = mDepthMapTechnique->getPass(0)->getFragmentShader().get();
fragmentShader->setFloatVectorVariable("lightPosition", ls->getPosition());
const CameraPtr& cam = ls->getCamera(0);
fragmentShader->setFloatVariable("depthPrecision", cam->getFarPlane());
scene.render(techniuqe, cam->getViewMatrix(), cam->getProjMatrix(), ~SOA_NotCastShadow);
mShadowMapRT->detachFromRender();
}
void MultiResSILLayer::VPLsLighting(LightSourcePtr const & light)
{
RenderEngine& re = Context::Instance().RenderFactoryInstance().RenderEngineInstance();
RenderDeviceCaps const & caps = re.DeviceCaps();
*vpl_view_param_ = g_buffer_camera_->ViewMatrix();
*vpl_proj_param_ = g_buffer_camera_->ProjMatrix();;
*vpl_depth_near_far_invfar_param_ = float3(g_buffer_camera_->NearPlane(),
g_buffer_camera_->FarPlane(), 1 / g_buffer_camera_->FarPlane());
float3 p = MathLib::transform_coord(light->Position(), g_buffer_camera_->ViewMatrix());
*vpl_light_pos_es_param_ = float4(p.x(), p.y(), p.z(), 1);
*vpl_light_color_param_ = light->Color();
*vpl_light_falloff_param_ = light->Falloff();
*vpl_gbuffer_tex_param_ = g_buffer_texs_[0];
*vpl_depth_tex_param_ = g_buffer_depth_tex_;
for (size_t i = 0; i < vpls_lighting_fbs_.size(); ++ i)
{
re.BindFrameBuffer(vpls_lighting_fbs_[i]);
if (caps.instance_id_support)
{
re.Render(*vpls_lighting_instance_id_tech_, *rl_vpl_);
}
else
{
for (int j = 0; j < VPL_COUNT; ++ j)
{
*vpl_x_coord_param_ = (j + 0.5f) / VPL_COUNT;
re.Render(*vpls_lighting_no_instance_id_tech_, *rl_vpl_);
}
}
}
}
void LightManager::removeLight(const LightSourcePtr& light) {
switch(light->type()) {
case LS_Directional: mDirectionalLights.erase(std::remove(mDirectionalLights.begin(),
mDirectionalLights.end(),
light),
mDirectionalLights.end()); break;
case LS_Spot: mSpotLights.erase(std::remove(mSpotLights.begin(),
mSpotLights.end(),
light),
mSpotLights.end()); break;
case LS_Point: mPointLights.erase(std::remove(mPointLights.begin(),
mPointLights.end(),
light),
mPointLights.end());
}
}
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);
}