Method RenderRaytracedShadows

trinity/Tr2LightManager.cpp:817–925

}

Tr2GpuResourcePool::Texture Tr2LightManager::RenderRaytracedShadows(
	Tr2RaytracingGeometry* geometry,
	const Tr2TextureAL& depth,
	const Tr2TextureAL& normal,
	const CcpMath::Sphere* planets,
	size_t planetCount,
	Tr2GpuResourcePool& gpuResourcePool,
	Tr2RenderContext& renderContext )
{
	renderContext.AddGpuMarker( __FUNCTION__ );
	GPU_REGION( renderContext, "Raytraced dynamic shadows" );
	CCP_STATS_ZONE( __FUNCTION__ );

	if( m_shadowCastingLights.size() == 0 || !g_useDynamicLightsShadows )
	{
		return {};
	}

	auto destTex = gpuResourcePool.GetTempTexture( "raytracing_dynamic_shadow_dest", depth.GetWidth(), depth.GetHeight(), Tr2RenderContextEnum::PIXEL_FORMAT_R16_UINT, Tr2GpuUsage::SHADER_RESOURCE | Tr2GpuUsage::UNORDERED_ACCESS );

	// texture uav
	m_Raytracing.m_effect->SetParameter( RtShadowMapTechniqueName, destTex );
	m_Raytracing.m_effect->SetParameter( RtNormalBufferTechniqueName, normal );
	ON_BLOCK_EXIT( [&] { m_Raytracing.m_effect->SetParameter( RtNormalBufferTechniqueName, Tr2TextureAL() ); } );

	// scene srv
	m_Raytracing.m_effect->SetParameter( RtSceneTechniqueName, geometry );

	if( !m_Raytracing.m_effect->GetEffectRes() || !m_Raytracing.m_effect->GetEffectRes()->IsGood() )
	{
		return {};
	}

	if( !geometry->HasGeometry() )
	{
		return {};
	}

	uint32_t techniqueIndex;
	if( !m_Raytracing.m_effect->GetShaderStateInterface()->GetTechniqueIndex( RtShadowTechniqueName, techniqueIndex ) )
	{
		return {};
	}

	BlueSharedStringW rayGenName, missName;
	m_Raytracing.m_pipelineManager.AddLibrary( rayGenName, missName, m_Raytracing.m_effect, RtShadowTechniqueName );

	auto pipelineState = m_Raytracing.m_pipelineManager.GetPipelineState( renderContext );

	if( !pipelineState.IsValid() )
	{
		return {};
	}

	if( !m_Raytracing.m_perFrameData.IsValid() )
	{
		m_Raytracing.m_perFrameData.Create( sizeof( RtShadowPerFrameData ), renderContext.GetPrimaryRenderContext() );
	}