Method UpdateImpostors

trinity/Eve/EveSpaceScene.cpp:1567–1674

}

void EveSpaceScene::UpdateImpostors( Tr2RenderContext& renderContext )
{
	if( !m_impostorManager || m_impostorManager->GetRenderQueueLength() == 0 )
	{
		return;
	}

	CCP_STATS_ZONE( __FUNCTION__ );
	GPU_REGION( renderContext, "Impostors Update" );

	CTriViewport fakeViewport;
	fakeViewport.width = 128;
	fakeViewport.height = 128;

	Tr2Renderer::PushViewTransform();
	Tr2Renderer::PushProjection();
	renderContext.m_esm.PushViewport();

	ON_BLOCK_EXIT( [&] {
		renderContext.m_esm.PopViewport();
		Tr2Renderer::PopProjection();
		Tr2Renderer::PopViewTransform();
	} );

	m_impostorManager->BeginUpdateAtlas( renderContext );
	ON_BLOCK_EXIT( [&] { m_impostorManager->EndUpdateAtlas( renderContext ); } );

	ITr2TextureProvider* bkDepthMapTexVar = nullptr;

	if( m_depthMapVar.GetType() == TRIVARIABLE_TEXTURE_RES )
	{
		m_depthMapVar.GetValue( bkDepthMapTexVar );
		if( bkDepthMapTexVar )
		{
			bkDepthMapTexVar->Lock();
		}

		m_depthMapVar = m_impostorManager->GetItemDepthStencil();
	}
	ON_BLOCK_EXIT( [&] {
		if( m_depthMapVar.GetType() == TRIVARIABLE_TEXTURE_RES )
		{
			m_depthMapVar = bkDepthMapTexVar;
			if( bkDepthMapTexVar )
			{
				bkDepthMapTexVar->Unlock();
			}
		}
		UpdateVariableStore();
	} );

	UpdateVariableStore();

	Vector3 eye = Tr2Renderer::GetInverseViewTransform().GetTranslation();
	Vector3 up = TransformNormal( Vector3( 0, 1, 0 ), Tr2Renderer::GetInverseViewTransform() );

	for( size_t i = 0; i < m_impostorManager->GetRenderQueueLength(); ++i )
	{