[solved]How to manual rendering without drawAll.

[moriwo]

I try this code.
but, the node was not rendering.

Is it possible?

Code: Select all

	IAnimatedMesh* mesh = Scene->getMesh("test.x");
	IAnimatedMeshSceneNode* node = Scene->addAnimatedMeshSceneNode(mesh);


	stringw str;
	while(Device->run()) 
	{  
		Driver->beginScene(true, true, SColor(0,0,100,100)); 
	
		node->render();
	//	Scene->drawAll();

		Driver->endScene();
	} 

[rogerborg]

drawAll() does a lot more than just calling render() on your animated mesh scene nodes.

In your case, this is probably the minimum that you can get away with doing:

Code: Select all

    while(device->run())
    {
        driver->beginScene(true, true, SColor(255,100,101,140));

        smgr->getActiveCamera()->OnRegisterSceneNode();

        node->OnAnimate(device->getTimer()->getTime());

        smgr->getActiveCamera()->render();
        node->render();

        driver->endScene();
    }

If you have further questions, then I suggest that you look at CSceneManager::drawAll() to see what it's doing.

[moriwo]

thanks rogerborg.

I succeeded the rendering by your code in case of solid node.

but, rendering was not done for the transparency node.

Code: Select all

IAnimatedMesh* mesh = Scene->getMesh("shadow_alp.x");
IAnimatedMeshSceneNode* node = Scene->addAnimatedMeshSceneNode(mesh);
node->setMaterialType(EMT_TRANSPARENT_ALPHA_CHANNEL);
node->getMaterial(0).MaterialTypeParam = 0.01f;

I read the drawAll function of CSceneManager.cpp.
but, I do not understand what mistake I am doing.
Can I ask your advice on something?

[JP]

I would imagine it would work the same whether the node is transparent or solid...

Within the smgr there are 2 lists (at least). One for solid objects and one for transparent ones. The solid objects are rendered first in an arbitrary order as the order doesn't matter but the transparent objects must be rendered back to front (i.e. farthest from camera first) in order to get the correct alpha blending.

But that shouldn't affect you if you're rendering a node manually...

Incidentally why do you not want to use smgr->drawAll()?

[rogerborg]

thanks rogerborg.

I succeeded the rendering by your code in case of solid node.

but, rendering was not done for the transparency node.

Code: Select all

void CAnimatedMeshSceneNode::render()
{
	video::IVideoDriver* driver = SceneManager->getVideoDriver();

	if (!Mesh || !driver)
		return;

	bool isTransparentPass =
		SceneManager->getSceneNodeRenderPass() == scene::ESNRP_TRANSPARENT;

//... and only render transparent materials during the transparent render pass

However, there's no public method to set the scene manager's render pass, so the test never passes, and mesh buffers with transparent materials don't get rendered.

I don't see a solution to that other than modifying Irrlicht and recompiling. Trivially, you could just add an ISceneManager::setSceneNodeRenderPass() method, and tell the scene manager that it's in the ESNRP_TRANSPARENT pass before calling your node's render() method.

Is this really a route you want to take? I'd echo JP's question about what requirement has led you to do the rendering yourself.

[moriwo]

thanks guys.

Please look at this post about the reason why I do the manual rendering.
http://irrlicht.sourceforge.net/phpBB2/ ... hp?t=30021

I know a transparent node is sorted by the distance from the camera.

but, the function seems to have trouble. just like my former post.

Therefore, I should render the node of ground first.(manually)
Or, I should render the node of the shadow end.

It is a reason why I do the manual rendering.

(Please teach me if you have good ideas other than manual rendering.)

[dlangdev]

I think if you get the transparent materials spread out to its own material, it would get automatically sorted. That's what I did in one my of my test program.

But your case could be unique, though.

[hybrid]

Another solution could be to duplicate the node, put it into a second scene manager, and disable the solid (resp. transparent) meshbuffers. It might already work with one scene manager, but you cannot change the order among the same type of materials.

[BlindSide]

For transparent scene nodes (static mesh),

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driver->setTransform(ETS_WORLD, node->getAbsoluteTransformation());

for(u32 i = 0;i < node->getMesh()->getMesh(0)->getMeshBufferCount();++i)
{
    driver->setMaterial(node->getMaterial(i));
    driver->drawMeshBuffer(node->getMesh()->getMesh(0)->getMeshBuffer(i));
}

works for me.

[moriwo]

I solved problem by adding the setSceneNodeRenderPass function.

It seems enough for now.

Thank you for teaching some methods.

thanks all.