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Tutorial 20: Managed Lights

Written by Colin MacDonald. This tutorial explains the use of the Light Manager of Irrlicht. It enables the use of more dynamic light sources than the actual hardware supports. Further applications of the Light Manager, such as per scene node callbacks, are left out for simplicity of the example.

#include <irrlicht.h>
#include "driverChoice.h"
using namespace irr;
using namespace core;
#if defined(_MSC_VER)
#pragma comment(lib, "Irrlicht.lib")
#endif // MSC_VER
driverChoice.h
irrlicht.h
Main header file of the irrlicht, the only file needed to include.
irr::core
Basic classes such as vectors, planes, arrays, lists, and so on can be found in this namespace.
Definition aabbox3d.h:15
irr
Everything in the Irrlicht Engine can be found in this namespace.
Definition aabbox3d.h:13

Normally, you are limited to 8 dynamic lights per scene: this is a hardware limit. If you want to use more dynamic lights in your scene, then you can register an optional light manager that allows you to to turn lights on and off at specific point during rendering. You are still limited to 8 lights, but the limit is per scene node.

This is completely optional: if you do not register a light manager, then a default distance-based scheme will be used to prioritise hardware lights based on their distance from the active camera.

NO_MANAGEMENT disables the light manager and shows Irrlicht's default light behaviour. The 8 lights nearest to the camera will be turned on, and other lights will be turned off. In this example, this produces a funky looking but incoherent light display.

LIGHTS_NEAREST_NODE shows an implementation that turns on a limited number of lights per mesh scene node. If finds the 3 lights that are nearest to the node being rendered, and turns them on, turning all other lights off. This works, but as it operates on every light for every node, it does not scale well with many lights. The flickering you can see in this demo is due to the lights swapping their relative positions from the cubes (a deliberate demonstration of the limitations of this technique).

LIGHTS_IN_ZONE shows a technique for turning on lights based on a 'zone'. Each empty scene node is considered to be the parent of a zone. When nodes are rendered, they turn off all lights, then find their parent 'zone' and turn on all lights that are inside that zone, i.e. are descendents of it in the scene graph. This produces true 'local' lighting for each cube in this example. You could use a similar technique to locally light all meshes in (e.g.) a room, without the lights spilling out to other rooms.

This light manager is also an event receiver; this is purely for simplicity in this example, it's neither necessary nor recommended for a real application.

class CMyLightManager : public scene::ILightManager, public IEventReceiver
{
typedef enum
{
NO_MANAGEMENT,
LIGHTS_NEAREST_NODE,
LIGHTS_IN_ZONE
}
LightManagementMode;
LightManagementMode Mode;
LightManagementMode RequestedMode;
// These data represent the state information that this light manager
// is interested in.
scene::ISceneManager * SceneManager;
core::array<scene::ISceneNode*> * SceneLightList;
scene::E_SCENE_NODE_RENDER_PASS CurrentRenderPass;
scene::ISceneNode * CurrentSceneNode;
public:
CMyLightManager(scene::ISceneManager* sceneManager)
: Mode(NO_MANAGEMENT), RequestedMode(NO_MANAGEMENT),
SceneManager(sceneManager), SceneLightList(0),
CurrentRenderPass(scene::ESNRP_NONE), CurrentSceneNode(0)
{ }
// The input receiver interface, which just switches light management strategy
bool OnEvent(const SEvent & event)
{
bool handled = false;
if (event.EventType == irr::EET_KEY_INPUT_EVENT && event.KeyInput.PressedDown)
{
handled = true;
switch(event.KeyInput.Key)
{
case irr::KEY_KEY_1:
RequestedMode = NO_MANAGEMENT;
break;
case irr::KEY_KEY_2:
RequestedMode = LIGHTS_NEAREST_NODE;
break;
case irr::KEY_KEY_3:
RequestedMode = LIGHTS_IN_ZONE;
break;
default:
handled = false;
break;
}
if(NO_MANAGEMENT == RequestedMode)
SceneManager->setLightManager(0); // Show that it's safe to register the light manager
else
SceneManager->setLightManager(this);
}
return handled;
}
// This is called before the first scene node is rendered.
virtual void OnPreRender(core::array<scene::ISceneNode*> & lightList)
{
// Update the mode; changing it here ensures that it's consistent throughout a render
Mode = RequestedMode;
// Store the light list. I am free to alter this list until the end of OnPostRender().
SceneLightList = &lightList;
}
// Called after the last scene node is rendered.
virtual void OnPostRender()
{
// Since light management might be switched off in the event handler, we'll turn all
// lights on to ensure that they are in a consistent state. You wouldn't normally have
// to do this when using a light manager, since you'd continue to do light management
// yourself.
for (u32 i = 0; i < SceneLightList->size(); i++)
(*SceneLightList)[i]->setVisible(true);
}
virtual void OnRenderPassPreRender(scene::E_SCENE_NODE_RENDER_PASS renderPass)
{
// I don't have to do anything here except remember which render pass I am in.
CurrentRenderPass = renderPass;
}
virtual void OnRenderPassPostRender(scene::E_SCENE_NODE_RENDER_PASS renderPass)
{
// I only want solid nodes to be lit, so after the solid pass, turn all lights off.
if (scene::ESNRP_SOLID == renderPass)
{
for (u32 i = 0; i < SceneLightList->size(); ++i)
(*SceneLightList)[i]->setVisible(false);
}
}
// This is called before the specified scene node is rendered
virtual void OnNodePreRender(scene::ISceneNode* node)
{
CurrentSceneNode = node;
// This light manager only considers solid objects, but you are free to manipulate
// lights during any phase, depending on your requirements.
if (scene::ESNRP_SOLID != CurrentRenderPass)
return;
// And in fact for this example, I only want to consider lighting for cube scene
// nodes. You will probably want to deal with lighting for (at least) mesh /
// animated mesh scene nodes as well.
if (node->getType() != scene::ESNT_CUBE)
return;
if (LIGHTS_NEAREST_NODE == Mode)
{
// This is a naive implementation that prioritises every light in the scene
// by its proximity to the node being rendered. This produces some flickering
// when lights orbit closer to a cube than its 'zone' lights.
const vector3df nodePosition = node->getAbsolutePosition();
// Sort the light list by prioritising them based on their distance from the node
// that's about to be rendered.
array<LightDistanceElement> sortingArray;
sortingArray.reallocate(SceneLightList->size());
u32 i;
for(i = 0; i < SceneLightList->size(); ++i)
{
scene::ISceneNode* lightNode = (*SceneLightList)[i];
const f64 distance = lightNode->getAbsolutePosition().getDistanceFromSQ(nodePosition);
sortingArray.push_back(LightDistanceElement(lightNode, distance));
}
sortingArray.sort();
// The list is now sorted by proximity to the node.
// Turn on the three nearest lights, and turn the others off.
for(i = 0; i < sortingArray.size(); ++i)
sortingArray[i].node->setVisible(i < 3);
}
else if(LIGHTS_IN_ZONE == Mode)
{
// Empty scene nodes are used to represent 'zones'. For each solid mesh that
// is being rendered, turn off all lights, then find its 'zone' parent, and turn
// on all lights that are found under that node in the scene graph.
// This is a general purpose algorithm that doesn't use any special
// knowledge of how this particular scene graph is organised.
for (u32 i = 0; i < SceneLightList->size(); ++i)
{
if ((*SceneLightList)[i]->getType() != scene::ESNT_LIGHT)
continue;
scene::ILightSceneNode* lightNode = static_cast<scene::ILightSceneNode*>((*SceneLightList)[i]);
video::SLight & lightData = lightNode->getLightData();
if (video::ELT_DIRECTIONAL != lightData.Type)
lightNode->setVisible(false);
}
scene::ISceneNode * parentZone = findZone(node);
if (parentZone)
turnOnZoneLights(parentZone);
}
}
// Called after the specified scene node is rendered
virtual void OnNodePostRender(scene::ISceneNode* node)
{
// I don't need to do any light management after individual node rendering.
}
private:
// Find the empty scene node that is the parent of the specified node
scene::ISceneNode * findZone(scene::ISceneNode * node)
{
if (!node)
return 0;
if (node->getType() == scene::ESNT_EMPTY)
return node;
return findZone(node->getParent());
}
// Turn on all lights that are children (directly or indirectly) of the
// specified scene node.
void turnOnZoneLights(scene::ISceneNode * node)
{
core::list<scene::ISceneNode*> const & children = node->getChildren();
for (core::list<scene::ISceneNode*>::ConstIterator child = children.begin();
child != children.end(); ++child)
{
if ((*child)->getType() == scene::ESNT_LIGHT)
(*child)->setVisible(true);
else // Assume that lights don't have any children that are also lights
turnOnZoneLights(*child);
}
}
// A utility class to aid in sorting scene nodes into a distance order
class LightDistanceElement
{
public:
LightDistanceElement() {};
LightDistanceElement(scene::ISceneNode* n, f64 d)
: node(n), distance(d) { }
scene::ISceneNode* node;
f64 distance;
// Lower distance elements are sorted to the start of the array
bool operator < (const LightDistanceElement& other) const
{
return (distance < other.distance);
}
};
};
irr::IEventReceiver
Interface of an object which can receive events.
Definition IEventReceiver.h:434
irr::core::array
Self reallocating template array (like stl vector) with additional features.
Definition irrArray.h:23
irr::core::array::size
u32 size() const
Get number of occupied elements of the array.
Definition irrArray.h:368
irr::core::list::end
Iterator end()
Gets end node.
Definition irrList.h:273
irr::core::list::begin
Iterator begin()
Gets first node.
Definition irrList.h:257
irr::core::vector3d::getDistanceFromSQ
T getDistanceFromSQ(const vector3d< T > &other) const
Returns squared distance from another point.
Definition vector3d.h:139
irr::scene::ILightManager
ILightManager provides an interface for user applications to manipulate the list of lights in the sce...
Definition ILightManager.h:26
irr::scene::ILightSceneNode::setVisible
virtual void setVisible(bool isVisible)=0
Sets if the node should be visible or not.
irr::scene::ILightSceneNode::getLightData
virtual const video::SLight & getLightData() const =0
Gets the light data associated with this ILightSceneNode.
irr::scene::ISceneManager
The Scene Manager manages scene nodes, mesh recources, cameras and all the other stuff.
Definition ISceneManager.h:151
irr::scene::ISceneManager::setLightManager
virtual void setLightManager(ILightManager *lightManager)=0
Register a custom callbacks manager which gets callbacks during scene rendering.
irr::scene::ISceneNode
Scene node interface.
Definition ISceneNode.h:41
irr::scene::ISceneNode::getAbsolutePosition
virtual core::vector3df getAbsolutePosition() const
Gets the absolute position of the node in world coordinates.
Definition ISceneNode.h:522
irr::scene::ISceneNode::getChildren
const core::list< ISceneNode * > & getChildren() const
Returns a const reference to the list of all children.
Definition ISceneNode.h:588
irr::scene::ISceneNode::getParent
scene::ISceneNode * getParent() const
Returns the parent of this scene node.
Definition ISceneNode.h:666
irr::scene::ISceneNode::setVisible
virtual void setVisible(bool isVisible)
Sets if the node should be visible or not.
Definition ISceneNode.h:252
irr::scene::ISceneNode::getType
virtual ESCENE_NODE_TYPE getType() const
Returns type of the scene node.
Definition ISceneNode.h:674
irr::core::vector3df
vector3d< f32 > vector3df
Typedef for a f32 3d vector.
Definition vector3d.h:445
irr::scene
All scene management can be found in this namespace: Mesh loading, special scene nodes like octrees a...
Definition CDynamicMeshBuffer.h:16
irr::scene::E_SCENE_NODE_RENDER_PASS
E_SCENE_NODE_RENDER_PASS
Enumeration for render passes.
Definition ISceneManager.h:56
irr::u32
unsigned int u32
32 bit unsigned variable.
Definition irrTypes.h:58
irr::f64
double f64
64 bit floating point variable.
Definition irrTypes.h:108
irr::KEY_KEY_3
@ KEY_KEY_3
Definition Keycodes.h:59
irr::KEY_KEY_1
@ KEY_KEY_1
Definition Keycodes.h:57
irr::KEY_KEY_2
@ KEY_KEY_2
Definition Keycodes.h:58
irr::EET_KEY_INPUT_EVENT
@ EET_KEY_INPUT_EVENT
A key input event.
Definition IEventReceiver.h:35
irr::SEvent::SKeyInput::Key
EKEY_CODE Key
Key which has been pressed or released.
Definition IEventReceiver.h:322
irr::SEvent::SKeyInput::PressedDown
bool PressedDown
If not true, then the key was left up.
Definition IEventReceiver.h:325
irr::SEvent::EventType
EEVENT_TYPE EventType
Definition IEventReceiver.h:414
irr::SEvent::KeyInput
struct SKeyInput KeyInput
Definition IEventReceiver.h:419
irr::video::SLight::Type
E_LIGHT_TYPE Type
Read-ONLY! Type of the light. Default: ELT_POINT.
Definition SLight.h:88
int main(int argumentCount, char * argumentValues[])
{
// ask user for driver
video::E_DRIVER_TYPE driverType=driverChoiceConsole();
if (driverType==video::EDT_COUNT)
return 1;
IrrlichtDevice *device = createDevice(driverType,
dimension2d<u32>(640, 480), 32);
if(!device)
return -1;
f32 const lightRadius = 60.f; // Enough to reach the far side of each 'zone'
video::IVideoDriver* driver = device->getVideoDriver();
scene::ISceneManager* smgr = device->getSceneManager();
gui::IGUIEnvironment* guienv = device->getGUIEnvironment();
gui::IGUISkin* skin = guienv->getSkin();
if (skin)
{
skin->setColor(gui::EGDC_BUTTON_TEXT, video::SColor(255, 255, 255, 255));
gui::IGUIFont* font = guienv->getFont("../../media/fontlucida.png");
if(font)
skin->setFont(font);
}
guienv->addStaticText(L"1 - No light management", core::rect<s32>(10,10,200,30));
guienv->addStaticText(L"2 - Closest 3 lights", core::rect<s32>(10,30,200,50));
guienv->addStaticText(L"3 - Lights in zone", core::rect<s32>(10,50,200,70));
irr::IrrlichtDevice
The Irrlicht device. You can create it with createDevice() or createDeviceEx().
Definition IrrlichtDevice.h:44
irr::IrrlichtDevice::getSceneManager
virtual scene::ISceneManager * getSceneManager()=0
Provides access to the scene manager.
irr::IrrlichtDevice::getVideoDriver
virtual video::IVideoDriver * getVideoDriver()=0
Provides access to the video driver for drawing 3d and 2d geometry.
irr::IrrlichtDevice::getGUIEnvironment
virtual gui::IGUIEnvironment * getGUIEnvironment()=0
Provides access to the 2d user interface environment.
irr::core::rect
Rectangle template.
Definition rect.h:27
irr::gui::IGUIEnvironment
GUI Environment. Used as factory and manager of all other GUI elements.
Definition IGUIEnvironment.h:71
irr::gui::IGUIEnvironment::getFont
virtual IGUIFont * getFont(const io::path &filename)=0
Returns pointer to the font with the specified filename.
irr::gui::IGUIEnvironment::addStaticText
virtual IGUIStaticText * addStaticText(const wchar_t *text, const core::rect< s32 > &rectangle, bool border=false, bool wordWrap=true, IGUIElement *parent=0, s32 id=-1, bool fillBackground=false)=0
Adds a static text.
irr::gui::IGUIEnvironment::getSkin
virtual IGUISkin * getSkin() const =0
Returns pointer to the current gui skin.
irr::gui::IGUIFont
Font interface.
Definition IGUIFont.h:40
irr::gui::IGUISkin
A skin modifies the look of the GUI elements.
Definition IGUISkin.h:379
irr::gui::IGUISkin::setFont
virtual void setFont(IGUIFont *font, EGUI_DEFAULT_FONT which=EGDF_DEFAULT)=0
sets a default font
irr::gui::IGUISkin::setColor
virtual void setColor(EGUI_DEFAULT_COLOR which, video::SColor newColor)=0
sets a default color
irr::video::IVideoDriver
Interface to driver which is able to perform 2d and 3d graphics functions.
Definition IVideoDriver.h:257
irr::video::SColor
Class representing a 32 bit ARGB color.
Definition SColor.h:202
irr::gui::EGDC_BUTTON_TEXT
@ EGDC_BUTTON_TEXT
Text on a button.
Definition IGUISkin.h:79
irr::video::E_DRIVER_TYPE
E_DRIVER_TYPE
An enum for all types of drivers the Irrlicht Engine supports.
Definition EDriverTypes.h:15
irr::video::EDT_COUNT
@ EDT_COUNT
No driver, just for counting the elements.
Definition EDriverTypes.h:56
irr::f32
float f32
32 bit floating point variable.
Definition irrTypes.h:104
irr::createDevice
IRRLICHT_API IrrlichtDevice *IRRCALLCONV createDevice(video::E_DRIVER_TYPE deviceType=video::EDT_SOFTWARE, const core::dimension2d< u32 > &windowSize=(core::dimension2d< u32 >(640, 480)), u32 bits=16, bool fullscreen=false, bool stencilbuffer=false, bool vsync=false, IEventReceiver *receiver=0)
Creates an Irrlicht device. The Irrlicht device is the root object for using the engine.

Add several "zones". You could use this technique to light individual rooms, for example.

for(f32 zoneX = -100.f; zoneX <= 100.f; zoneX += 50.f)
for(f32 zoneY = -60.f; zoneY <= 60.f; zoneY += 60.f)
{
// Start with an empty scene node, which we will use to represent a zone.
scene::ISceneNode * zoneRoot = smgr->addEmptySceneNode();
zoneRoot->setPosition(vector3df(zoneX, zoneY, 0));
// Each zone contains a rotating cube
scene::IMeshSceneNode * node = smgr->addCubeSceneNode(15, zoneRoot);
scene::ISceneNodeAnimator * rotation = smgr->createRotationAnimator(vector3df(0.25f, 0.5f, 0.75f));
node->addAnimator(rotation);
rotation->drop();
// And each cube has three lights attached to it. The lights are attached to billboards so
// that we can see where they are. The billboards are attached to the cube, so that the
// lights are indirect descendents of the same empty scene node as the cube.
scene::IBillboardSceneNode * billboard = smgr->addBillboardSceneNode(node);
billboard->setPosition(vector3df(0, -14, 30));
billboard->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR );
billboard->setMaterialTexture(0, driver->getTexture("../../media/particle.bmp"));
billboard->setMaterialFlag(video::EMF_LIGHTING, false);
smgr->addLightSceneNode(billboard, vector3df(0, 0, 0), video::SColorf(1, 0, 0), lightRadius);
billboard = smgr->addBillboardSceneNode(node);
billboard->setPosition(vector3df(-21, -14, -21));
billboard->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR );
billboard->setMaterialTexture(0, driver->getTexture("../../media/particle.bmp"));
billboard->setMaterialFlag(video::EMF_LIGHTING, false);
smgr->addLightSceneNode(billboard, vector3df(0, 0, 0), video::SColorf(0, 1, 0), lightRadius);
billboard = smgr->addBillboardSceneNode(node);
billboard->setPosition(vector3df(21, -14, -21));
billboard->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR );
billboard->setMaterialTexture(0, driver->getTexture("../../media/particle.bmp"));
billboard->setMaterialFlag(video::EMF_LIGHTING, false);
smgr->addLightSceneNode(billboard, vector3df(0, 0, 0), video::SColorf(0, 0, 1), lightRadius);
// Each cube also has a smaller cube rotating around it, to show that the cubes are being
// lit by the lights in their 'zone', not just lights that are their direct children.
node = smgr->addCubeSceneNode(5, node);
node->setPosition(vector3df(0, 21, 0));
}
smgr->addCameraSceneNode(0, vector3df(0,0,-130), vector3df(0,0,0));
CMyLightManager * myLightManager = new CMyLightManager(smgr);
smgr->setLightManager(0); // This is the default: we won't do light management until told to do it.
device->setEventReceiver(myLightManager);
int lastFps = -1;
while(device->run())
{
driver->beginScene(true, true, video::SColor(255,100,101,140));
smgr->drawAll();
guienv->drawAll();
driver->endScene();
int fps = driver->getFPS();
if(fps != lastFps)
{
lastFps = fps;
core::stringw str = L"Managed Lights [";
str += driver->getName();
str += "] FPS:";
str += fps;
device->setWindowCaption(str.c_str());
}
}
myLightManager->drop(); // Drop my implicit reference
device->drop();
return 0;
}
irr::IReferenceCounted::drop
bool drop() const
Drops the object. Decrements the reference counter by one.
Definition IReferenceCounted.h:116
irr::IrrlichtDevice::run
virtual bool run()=0
Runs the device.
irr::IrrlichtDevice::setWindowCaption
virtual void setWindowCaption(const wchar_t *text)=0
Sets the caption of the window.
irr::IrrlichtDevice::setEventReceiver
virtual void setEventReceiver(IEventReceiver *receiver)=0
Sets a new user event receiver which will receive events from the engine.
irr::core::string::c_str
const T * c_str() const
Returns character string.
Definition irrString.h:495
irr::gui::IGUIEnvironment::drawAll
virtual void drawAll()=0
Draws all gui elements by traversing the GUI environment starting at the root node.
irr::scene::IBillboardSceneNode
A billboard scene node.
Definition IBillboardSceneNode.h:21
irr::scene::IMeshSceneNode
A scene node displaying a static mesh.
Definition IMeshSceneNode.h:21
irr::scene::ISceneManager::drawAll
virtual void drawAll()=0
Draws all the scene nodes.
irr::scene::ISceneManager::addCameraSceneNode
virtual ICameraSceneNode * addCameraSceneNode(ISceneNode *parent=0, const core::vector3df &position=core::vector3df(0, 0, 0), const core::vector3df &lookat=core::vector3df(0, 0, 100), s32 id=-1, bool makeActive=true)=0
Adds a camera scene node to the scene graph and sets it as active camera.
irr::scene::ISceneManager::addEmptySceneNode
virtual ISceneNode * addEmptySceneNode(ISceneNode *parent=0, s32 id=-1)=0
Adds an empty scene node to the scene graph.
irr::scene::ISceneManager::createRotationAnimator
virtual ISceneNodeAnimator * createRotationAnimator(const core::vector3df &rotationSpeed)=0
Creates a rotation animator, which rotates the attached scene node around itself.
irr::scene::ISceneManager::addCubeSceneNode
virtual IMeshSceneNode * addCubeSceneNode(f32 size=10.0f, ISceneNode *parent=0, s32 id=-1, const core::vector3df &position=core::vector3df(0, 0, 0), const core::vector3df &rotation=core::vector3df(0, 0, 0), const core::vector3df &scale=core::vector3df(1.0f, 1.0f, 1.0f))=0
Adds a cube scene node.
irr::scene::ISceneManager::addBillboardSceneNode
virtual IBillboardSceneNode * addBillboardSceneNode(ISceneNode *parent=0, const core::dimension2d< f32 > &size=core::dimension2d< f32 >(10.0f, 10.0f), const core::vector3df &position=core::vector3df(0, 0, 0), s32 id=-1, video::SColor colorTop=0xFFFFFFFF, video::SColor colorBottom=0xFFFFFFFF)=0
Adds a billboard scene node to the scene graph.
irr::scene::ISceneManager::addLightSceneNode
virtual ILightSceneNode * addLightSceneNode(ISceneNode *parent=0, const core::vector3df &position=core::vector3df(0, 0, 0), video::SColorf color=video::SColorf(1.0f, 1.0f, 1.0f), f32 radius=100.0f, s32 id=-1)=0
Adds a dynamic light scene node to the scene graph.
irr::scene::ISceneNodeAnimator
Animates a scene node. Can animate position, rotation, material, and so on.
Definition ISceneNodeAnimator.h:31
irr::scene::ISceneNode::setMaterialTexture
void setMaterialTexture(u32 textureLayer, video::ITexture *texture)
Sets the texture of the specified layer in all materials of this scene node to the new texture.
Definition ISceneNode.h:436
irr::scene::ISceneNode::addAnimator
virtual void addAnimator(ISceneNodeAnimator *animator)
Adds an animator which should animate this node.
Definition ISceneNode.h:348
irr::scene::ISceneNode::setPosition
virtual void setPosition(const core::vector3df &newpos)
Sets the position of the node relative to its parent.
Definition ISceneNode.h:507
irr::scene::ISceneNode::setMaterialFlag
void setMaterialFlag(video::E_MATERIAL_FLAG flag, bool newvalue)
Sets all material flags at once to a new value.
Definition ISceneNode.h:425
irr::scene::ISceneNode::setMaterialType
void setMaterialType(video::E_MATERIAL_TYPE newType)
Sets the material type of all materials in this scene node to a new material type.
Definition ISceneNode.h:448
irr::video::IVideoDriver::beginScene
virtual bool beginScene(bool backBuffer=true, bool zBuffer=true, SColor color=SColor(255, 0, 0, 0), const SExposedVideoData &videoData=SExposedVideoData(), core::rect< s32 > *sourceRect=0)=0
Applications must call this method before performing any rendering.
irr::video::IVideoDriver::getTexture
virtual ITexture * getTexture(const io::path &filename)=0
Get access to a named texture.
irr::video::IVideoDriver::getFPS
virtual s32 getFPS() const =0
Returns current frames per second value.
irr::video::IVideoDriver::getName
virtual const wchar_t * getName() const =0
Gets name of this video driver.
irr::video::IVideoDriver::endScene
virtual bool endScene()=0
Presents the rendered image to the screen.
irr::video::SColorf
Class representing a color with four floats.
Definition SColor.h:459
irr::core::stringw
string< wchar_t > stringw
Typedef for wide character strings.
Definition irrString.h:1361
irr::video::EMF_LIGHTING
@ EMF_LIGHTING
Will this material be lighted? Default: true.
Definition EMaterialFlags.h:26
irr::video::EMT_TRANSPARENT_ADD_COLOR
@ EMT_TRANSPARENT_ADD_COLOR
A transparent material.
Definition EMaterialTypes.h:88
- Irrlicht Engine Documentation © 2003-2012 by Nikolaus Gebhardt. Generated on for Irrlicht 3D Engine by Doxygen 1.15.0