Method ProcessOutdatedRTAnimations

trinity/Eve/EveSpaceScene.cpp:4143–4244

}

void EveSpaceScene::ProcessOutdatedRTAnimations( Tr2RenderContext& renderContext )
{
	TriFrustumOrtho sunShadowFrustum;
	auto sunDir = m_sunData.DirWorld;

	{ // Process Sun light
		// Let's compute left, right, top, bottom of the frustum divided by the near clipping plane. We need this for SetupShadowSplit.
		Matrix cameraProjection = Tr2Renderer::GetProjectionTransform();
		float rightMinusLeft = 2.f / cameraProjection._11; //	= ( r - l ) / zn
		float bottomMinusTop = 2.f / -cameraProjection._22; //	= ( b - t ) / zn
		float left = ( cameraProjection._31 - 1.f ) / 2.f * rightMinusLeft; //	= l / zn
		float top = ( -cameraProjection._32 - 1.f ) / 2.f * bottomMinusTop; //	= t / zn
		float right = rightMinusLeft + left; //	= r / zn
		float bottom = bottomMinusTop + top; //	= b / zn

		// Make a projection matrix that fills
		auto sunProjection = PerspectiveOffCenterMatrix( left, right, bottom, top, MIN_SHADOW_SPLIT, MAX_SHADOW_SPLIT );

		// we can apply the inverse of the view and projection matrices on the corner points of the unit cube to get the frustum corners in world space
		Matrix invViewProj = Inverse( sunProjection ) * Tr2Renderer::GetInverseViewTransform();

		// Find light view
		Matrix lightView = Inverse( OrthoNormalBasisZ( -m_sunData.DirWorld ) );

		Vector3 corners[8];

		AxisAlignedBoundingBox aabb = Tr2ShadowMap::CalculateAABB( sunProjection, Tr2Renderer::GetInverseViewTransform(), lightView, corners );

		// create shadow frustum out from lightView, aabb.min, aabb.max
		sunShadowFrustum.DeriveFrustum( lightView, aabb.m_min, aabb.m_max );
	}

	std::vector<const Tr2LightManager::PerLightData*> pointsLightDatas;
	std::vector<TriFrustum> spotLightFrustums;

	// Process other lights
	if( auto lightManager = Tr2LightManager::GetInstance() )
	{
		if( lightManager->GetShadowCastingLights().size() > 0 )
		{
			for( uint32_t lightIndex : lightManager->GetShadowCastingLights() )
			{
				const Tr2LightManager::PerLightData* lightData = &lightManager->GetLightData( lightIndex );

				// Point light
				if( lightData->innerAngle <= 0.0f )
				{
					pointsLightDatas.push_back( lightData );
				}
				else // Spot light
				{
					Matrix projection;
					Matrix view;
					GetLightMatrices( *lightData, projection, view );

					TriFrustum shadowFrustum;
					shadowFrustum.DeriveFrustum( &view, &lightData->position, &projection, renderContext.m_esm.GetViewport() );
					spotLightFrustums.push_back( shadowFrustum );