ActiveCamera->render(); excute twice?

[zhuhaizhong2008]

if ( ActiveCamera )
{
ActiveCamera->render();
camWorldPos = ActiveCamera->getAbsolutePosition();
}

// let all nodes register themselves
OnRegisterSceneNode();

if(LightManager)
LightManager->OnPreRender(LightList);

//render camera scenes
{
CurrentRendertime = ESNRP_CAMERA;
Driver->getOverrideMaterial().Enabled = ((Driver->getOverrideMaterial().EnablePasses & CurrentRendertime) != 0);

if(LightManager)
LightManager->OnRenderPassPreRender(CurrentRendertime);

for (i=0; i<CameraList.size(); ++i)
CameraList->render();

CameraList.set_used(0);

if(LightManager)
LightManager->OnRenderPassPostRender(CurrentRendertime);
}


code in void CSceneManager::drawAll()
my understanding is that ActiveCamera->render() is excuted twice.am I right ? Is it necessary?

[dejai]

If ActiveCamera is an element in CameraList then I would assume that is getting rendered twice for no reason however I am not exactly sure whether:

Code: Select all

OnRegisterSceneNode();

if(LightManager)
LightManager->OnPreRender(LightList);

//render camera scenes
{
CurrentRendertime = ESNRP_CAMERA;
Driver->getOverrideMaterial().Enabled = ((Driver->getOverrideMaterial().EnablePasses & CurrentRendertime) != 0);

if(LightManager)
LightManager->OnRenderPassPreRender(CurrentRendertime); 

Interfaces with the ActiveCamera in anyway.

[vitek]

I'm not saying that it is right, I'm just explaining what it looks like it is trying to do, but it looks like the scene manager needs to have an accurate value for camWorldPos before registering scene nodes (see CSceneManager::registerNodeForRendering()).

Travis