Context Navigation

source: GTP/trunk/Lib/Illum/IllumModule/OgreIllumModule/src/RenderingRuns/OgrePhotonMapRenderingRun.cpp @ 2320

Revision 2320, 5.6 KB checked in by szirmay, 17 years ago (diff)

Line
1	#include "OgrePhotonMapRenderingRun.h"
2	//#include "OgreIlluminationManager.h"
3	#include "OgreCubeMapRenderingRun.h"
4
5
6	OgrePhotonMapRenderingRun::OgrePhotonMapRenderingRun(OgreSharedRuns* sharedRuns,
7	String name,
8	unsigned long startFrame,
9	unsigned long updateInterval,
10	unsigned int resolution,
11	String materialName,
12	bool useDistance
13	)
14	:PhotonMapRenderingRun( startFrame, updateInterval)
15	, OgreRenderingRun(startFrame, updateInterval)
16	, RenderingRun(startFrame, updateInterval)
17	{
18	this->useDistance = useDistance;
19	this->sharedRuns = sharedRuns;
20	this->name = name;
21	this->resolution = resolution;
22	this->light = 0;
23	this->materialName = materialName;
24
25	createPhotonMap();
26	}
27
28	void OgrePhotonMapRenderingRun::createPhotonMap()
29	{
30	TexturePtr texPtr = Ogre::TextureManager::getSingleton().createManual(name,
31	"default",
32	TEX_TYPE_2D,
33	resolution,
34	resolution,
35	0,
36	0,
37	PF_FLOAT32_RGBA,
38	TU_RENDERTARGET);
39	photonMapTexture = texPtr.getPointer();
40	photonMapCamera = Root::getSingleton()._getCurrentSceneManager()->createCamera(name + "_CAMERA");
41	//add viewport to rendertarget
42	HardwarePixelBuffer* hpb = (photonMapTexture->getBuffer()).getPointer();
43	RenderTarget* rt = hpb->getRenderTarget();
44	Viewport* v = rt->addViewport(photonMapCamera);
45	v->setOverlaysEnabled(false);
46	rt->setAutoUpdated(false);
47
48	photonMapCamera->setLodBias(0.0001);
49	}
50
51	void OgrePhotonMapRenderingRun::updateFrame(unsigned long frameNum)
52	{
53	refreshLight();
54
55	if(useDistance)
56	{
57	sharedRuns->updateRun(ILLUMRUN_DISTANCE_CUBEMAP, frameNum);
58	}
59
60	Material* mat = (Material*) MaterialManager::getSingleton().getByName(materialName).getPointer();
61	GpuProgramParameters* Fparams = mat->getTechnique(0)->getPass(0)->getFragmentProgramParameters().getPointer();
62	Fparams->setNamedConstant("lastCenter", sharedRuns->getRootPosition(ILLUMRUN_PHOTONMAP));
63
64	SceneManager* sm = Ogre::Root::getSingleton()._getCurrentSceneManager();
65	RenderQueue* rq = sm->getRenderQueue();
66	rq->clear();
67
68	((OgreSharedRuns*)sharedRuns->getRoot(ILLUMRUN_PHOTONMAP))->notifyCamera(photonMapCamera);
69	((OgreSharedRuns*)sharedRuns->getRoot(ILLUMRUN_PHOTONMAP))->addRenderablesToQueue(rq);
70
71	setMaterialForRenderables(materialName,rq);
72
73	RenderTarget* rt = photonMapTexture->getBuffer().getPointer()->getRenderTarget();
74
75	rt->update();
76	/*
77	static int framecount = 0;
78	String filename = "photon";
79	filename.append(this->name);
80	//filename.append(StringConverter::toString(framecount));
81	filename.append(".png");
82	rt->writeContentsToFile(filename);
83	framecount++;*/
84
85	restoreMaterials();
86	}
87
88	void OgrePhotonMapRenderingRun::refreshLight()
89	{
90	///TODO:
91	///search nearest light, set light params
92	SceneManager* sm = Root::getSingleton()._getCurrentSceneManager();
93	LightList list;
94	sm->_populateLightList(((OgreSharedRuns*)sharedRuns)->getRootPosition(ILLUMRUN_PHOTONMAP),100000, list);
95
96	light = *(list.begin());
97
98	if(light!= 0)
99	{
100	if(light->getType() == Light::LT_DIRECTIONAL)
101	{
102	Vector3 dir = light->getDirection();
103	photonMapCamera->setDirection( dir );
104	Real r = sharedRuns->getRootBoundingSphere(ILLUMRUN_PHOTONMAP).getRadius();
105	photonMapCamera->setPosition( sharedRuns->getRootPosition(ILLUMRUN_PHOTONMAP) - dir * r);
106	photonMapCamera->setProjectionType(PT_ORTHOGRAPHIC);
107	Matrix4 proj;
108	proj = Matrix4::IDENTITY;
109	proj.setScale(Vector3(1.0/r, 1.0/r, -1.5/r));
110	//proj.setTrans(Vector3(0,0,-1));
111	photonMapCamera->setCustomProjectionMatrix(true,proj);
112	}
113	else
114	{
115	Vector3 pos = light->getParentSceneNode()->getPosition();
116	Vector3 dir = sharedRuns->getRootPosition(ILLUMRUN_PHOTONMAP) - pos;
117	Real r = sharedRuns->getRootBoundingSphere(ILLUMRUN_PHOTONMAP).getRadius();
118	Real d = dir.length();
119	dir.normalise();
120	float mindist = 1.5 * r;
121	if(d < mindist)
122	{
123	pos -= dir * (mindist - d) ;
124	d = mindist;
125	}
126	photonMapCamera->setPosition(pos);
127	Radian alfa = Math::ASin(r/d);
128	photonMapCamera->setFOVy(2*alfa);
129	photonMapCamera->setDirection( dir );
130
131	photonMapCamera->setNearClipDistance(std::max(0.01f, d - r));
132	photonMapCamera->setFarClipDistance(r + d);
133	}
134	}
135	}
136
137	void OgrePhotonMapRenderingRun::distanceCubeMapChanged(RenderingRun* run)
138	{
139	Material* mat = (Material*) MaterialManager::getSingleton().getByName(materialName).getPointer();
140	OgreCubeMapRenderingRun* cuberun =(OgreCubeMapRenderingRun*) (run->asOgreRenderingRun());
141	String cubemapname = cuberun->getCubeMapTextureName();
142	mat->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setTextureName(cubemapname);
143	}
144
145	void OgrePhotonMapRenderingRun::distanceCubeMapUpdated(RenderingRun* run)
146	{
147	Material* mat = (Material*) MaterialManager::getSingleton().getByName(materialName).getPointer();
148	OgreCubeMapRenderingRun* cuberun =(OgreCubeMapRenderingRun*) (run->asOgreRenderingRun());
149	String cubemapname = cuberun->getCubeMapTextureName();
150	GpuProgramParametersSharedPtr fpParams = mat->getTechnique(0)->getPass(0)->getFragmentProgramParameters();
151	Vector3 center = ((OgreSharedRuns*) sharedRuns)->getRootPosition(ILLUMRUN_DISTANCE_CUBEMAP);
152	fpParams->setNamedConstant("lastCenter",center);
153	}
154
155	void OgrePhotonMapRenderingRun::freeAllResources()
156	{
157	TextureManager::getSingleton().remove(name);
158	Root::getSingleton()._getCurrentSceneManager()->destroyCamera(name + "_CAMERA");
159	}

Note: See TracBrowser for help on using the repository browser.

Download in other formats: