Method ResolveLightData

trinity/Tr2LightManager.cpp:520–620

}

void Tr2LightManager::ResolveLightData()
{
	m_lightData.clear();
	for( auto& data : m_tlsLightData )
	{
		if( !data.empty() )
		{
			m_lightData.insert( end( m_lightData ), begin( data ), end( data ) );
		}
		data.clear();
	}

	m_shadowCastingLights.clear();
	m_volumetricLights.clear();

	// filter volumetric lights
	std::vector<LightScreenSizeTuple> lightTuples;
	{
		for( uint32_t i = 0; i < m_lightData.size(); i++ )
		{
			if( ( m_lightData[i].flags & FLAG_IS_VOLUMETRIC ) != 0 )
			{
				float sizeAcross = m_frustum.GetPixelSizeAccrossEst( reinterpret_cast<Vector4*>( &m_lightData[i].position ) );
				sizeAcross = sizeAcross == std::numeric_limits<float>::max() ? ( 1 << HIGH_QUALITY_ATLAS_SIZE_LOG2 ) : sizeAcross;
				lightTuples.push_back( LightScreenSizeTuple{ i, sizeAcross } );
			}
		}

		// sort volumetric lights by size on screen
		std::sort( lightTuples.begin(), lightTuples.end(), []( const LightScreenSizeTuple& a, const LightScreenSizeTuple& b ) {
			return a.sizeAcross > b.sizeAcross;
		} );

		// keep only the largest lights
		uint32_t numVolumetricLights = min( MAX_NUM_VOLUMETRIC_LIGHTS, (uint32_t)lightTuples.size() );
		m_volumetricLights.resize( numVolumetricLights );
		uint32_t i = 0;
		for( ; i < numVolumetricLights; i++ )
		{
			m_volumetricLights[i] = lightTuples[i].lightIndex;
		}
		for( ; i < lightTuples.size(); i++ )
		{
			Tr2LightManager::PerLightData& lightData = m_lightData[lightTuples[i].lightIndex];
			lightData.flags &= ~Tr2LightManager::FLAG_IS_VOLUMETRIC;
		}
	}

	if( !g_useDynamicLightsShadows || m_currentSpaceSceneShadowQuality == ShadowQuality::SHADOW_DISABLED )
	{
		return;
	}

	// filter shadowcasting lights
	uint32_t numShadowCastingLights = 0;
	lightTuples.resize( 0 );
	{
		for( uint32_t i = 0; i < m_lightData.size(); i++ )