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OgreDepthShadowMapRenderingRun.cpp @ 2551

Revision 2551, 16.3 KB checked in by szirmay, 17 years ago (diff)

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1	#include "OgreDepthShadowMapRenderingRun.h"
2	#include "OgreIlluminationManager.h"
3
4
5	OgreDepthShadowMapRenderingRun::OgreDepthShadowMapRenderingRun(OgreSharedRuns* sharedRuns,
6	String name,
7	Light* light,
8	unsigned int resolutionX,
9	unsigned int resolutionY,
10	String materialName
11	)
12	:DepthShadowMapRenderingRun(resolutionX, resolutionY)
13	, OgreRenderingRun(1, 1)
14	, RenderingRun(1, 1)
15	{
16	this->light = light;
17	this->sharedRuns = sharedRuns;
18	this->name = name;
19	this->blurredname = name + "blurred";
20
21	this->materialName = materialName;
22	lightFarPlane = 0;
23	createDepthMap();
24	}
25
26	void OgreDepthShadowMapRenderingRun::createDepthMap()
27	{
28	if(light->getType() == Light::LT_POINT)
29	{
30	depthMapTexture = createCubeRenderTexture(name, light->getPosition(), resolutionX,PF_FLOAT16_RGBA,0,ColourValue::White);
31	for(int i = 0; i < 6; i++)
32	depthMapTexture->getBuffer(i, 0).getPointer()->getRenderTarget()->getViewport(0)->setSkiesEnabled(false);
33
34	if(OgreIlluminationManager::getSingleton().getBlurShadowMap(light->getType()))
35	blurredDepthMapTexture = createCubeRenderTexture(blurredname, light->getPosition(), resolutionX,PF_FLOAT16_RGBA,0,ColourValue::White);
36	}
37	else
38	{
39
40	TexturePtr texPtr = Ogre::TextureManager::getSingleton().createManual(name,
41	"default",
42	TEX_TYPE_2D,
43	resolutionX,
44	resolutionY,
45	0,
46	0,
47	PF_FLOAT16_RGBA,
48	TU_RENDERTARGET);
49	depthMapTexture = texPtr.getPointer();
50	depthMapCamera = Root::getSingleton()._getCurrentSceneManager()->createCamera(name + "_CAMERA");
51	//add viewport to rendertarget
52	HardwarePixelBuffer* hpb = (depthMapTexture->getBuffer()).getPointer();
53	RenderTarget* rt = hpb->getRenderTarget();
54	Viewport* v = rt->addViewport(depthMapCamera);
55	v->setBackgroundColour(ColourValue::White);
56	v->setOverlaysEnabled(false);
57	v->setSkiesEnabled(false);
58	rt->setAutoUpdated(false);
59
60	if(OgreIlluminationManager::getSingleton().getBlurShadowMap(light->getType()))
61	{
62	texPtr = Ogre::TextureManager::getSingleton().createManual(blurredname,
63	"default",
64	TEX_TYPE_2D,
65	resolutionX,
66	resolutionY,
67	0,
68	0,
69	PF_FLOAT16_RGBA,
70	TU_RENDERTARGET);
71	blurredDepthMapTexture = texPtr.getPointer();
72	hpb = (blurredDepthMapTexture->getBuffer()).getPointer();
73	rt = hpb->getRenderTarget();
74	v = rt->addViewport(depthMapCamera);
75	v->setOverlaysEnabled(false);
76	rt->setAutoUpdated(false);
77	}
78	}
79	}
80
81	bool OgreDepthShadowMapRenderingRun::renderableQueued (Renderable rend, uint8 groupID, ushort priority, Technique *ppTech)
82	{
83	if((*ppTech)->isTransparent())
84	return false;
85
86	if(!rend->getCastsShadows())
87	return false;
88
89	String materialToSet = materialName;
90	OgreTechniqueGroup* TG = (OgreTechniqueGroup*) rend->getRenderTechniqueGroup();
91	if(TG)
92	{
93	String triggeredMaterial = TG->getMaterialNameForTrigger(triggerName);
94	if(triggeredMaterial != "")//a trigger is associated
95	materialToSet = triggeredMaterial;
96
97	}
98
99	Technique* techn = ((Material*)MaterialManager::getSingleton().getByName( materialToSet ).getPointer())->getTechnique(0);
100	*ppTech = techn;
101	return true;
102	}
103
104	void OgreDepthShadowMapRenderingRun::updateFrame(unsigned long frameNum)
105	{
106	refreshLight(frameNum);
107
108	if(light->getType() == Light::LT_POINT)
109	{
110
111	for(int i = 0; i < 6 ; i++)
112	updateDepthCubeFace(i);
113
114	//restoreMaterials();
115	}
116	else
117	{
118	updateDepthMap();
119	}
120
121
122	}
123
124	void OgreDepthShadowMapRenderingRun::updateDepthCubeFace(int facenum)
125	{
126	Vector3 lightpos = light->getDerivedPosition();
127
128	RenderTarget* rt = depthMapTexture->getBuffer(facenum, 0).getPointer()->getRenderTarget();
129	Camera* cam = rt->getViewport(0)->getCamera();
130	cam->setFarClipDistance(lightFarPlane);
131	cam->setPosition(lightpos);
132
133
134	//setMaterialForVisibles(materialName, cam, true, false, triggerName);
135	RenderQueue* rq = Root::getSingleton()._getCurrentSceneManager()->getRenderQueue();
136	rq->setRenderableListener(this);
137
138	rt->update();
139
140	// restoreMaterials();
141
142	//rt->writeContentsToFile("shadowmap_" + StringConverter::toString(facenum) + ".dds");
143
144	rq->setRenderableListener(0);
145
146	if(OgreIlluminationManager::getSingleton().getBlurShadowMap(light->getType()))
147	{
148	rt = blurredDepthMapTexture->getBuffer(facenum, 0).getPointer()->getRenderTarget();
149	Material* mat = (Material*) MaterialManager::getSingleton().getByName("GameTools/BlurCubeFace").getPointer();
150	mat->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setTextureName(depthMapTexture->getName());
151	mat->getTechnique(0)->getPass(0)->getFragmentProgramParameters()->setNamedConstant("face", facenum);
152	renderFullscreenQuad("GameTools/BlurCubeFace", rt);
153
154	//rt->writeContentsToFile("shadowmap_blurred_" + StringConverter::toString(facenum) + ".dds");
155	}
156	}
157
158	void OgreDepthShadowMapRenderingRun::updateDepthMap()
159	{
160
161	RenderTarget* rt = depthMapTexture->getBuffer().getPointer()->getRenderTarget();
162	Viewport* vp = rt->getViewport(0);
163
164	//setMaterialForVisibles(materialName, depthMapCamera, true, false, triggerName);
165	RenderQueue* rq = Root::getSingleton()._getCurrentSceneManager()->getRenderQueue();
166	rq->setRenderableListener(this);
167
168	rt->update();
169
170	//restoreMaterials();
171	rq->setRenderableListener(0);
172
173	if(OgreIlluminationManager::getSingleton().getBlurShadowMap(light->getType()))
174	{
175	rt = blurredDepthMapTexture->getBuffer().getPointer()->getRenderTarget();
176	Material* mat = (Material*) MaterialManager::getSingleton().getByName("GameTools/Blur").getPointer();
177	mat->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setTextureName(depthMapTexture->getName());
178	renderFullscreenQuad("GameTools/Blur", rt);
179	}
180
181	//rt->writeContentsToFile("shadowmap1.dds");
182
183	//depthMapTexture->();
184	}
185
186	const String& OgreDepthShadowMapRenderingRun::getDepthMapTextureName()
187	{
188	if(OgreIlluminationManager::getSingleton().getBlurShadowMap(light->getType()))
189	return blurredname;
190
191	return name;
192	}
193
194	void OgreDepthShadowMapRenderingRun::refreshLight(unsigned long frameNum)
195	{
196	if(light!= 0)
197	{
198	bool uselispsm = OgreIlluminationManager::getSingleton().getUseLISPSM(light->getType());
199	bool usefocusing = OgreIlluminationManager::getSingleton().getFocusingShadowMap(light->getType());
200	if(light->getType() == Light::LT_DIRECTIONAL)
201	{
202	triggerName = "ILLUM_TRIGGER_SM_DIRECTIONAL";
203	Camera* viewcam = OgreIlluminationManager::getSingleton().getMainCamera();
204
205	OgreFocusingMapRenderingRun* frun = (OgreFocusingMapRenderingRun*)
206	OgreIlluminationManager::getSingleton().getGlobalRun(ILLUMRUN_FOCUSING_MAP)->asOgreRenderingRun();
207	frun->setCameraMatrices(viewcam->getViewMatrix(), viewcam->getProjectionMatrix());
208
209	Vector3 lightpos = light->getDerivedPosition();
210	Vector3 lightdir = light->getDerivedDirection();
211	lightdir.normalise();
212
213	Vector3 min;
214	Vector3 max;
215
216
217	if(uselispsm)
218	{
219	Camera* maincam = OgreIlluminationManager::getSingleton().getMainCamera();
220	Vector3 viewdir = maincam->getDirection();
221	viewdir.normalise();
222	Vector3 campos = maincam->getPosition();
223	float nearclip = maincam->getNearClipDistance();
224
225	float dotprod = viewdir.dotProduct(lightdir);
226	float sinGamma = sqrt(1.0 - dotprod * dotprod);
227
228	Vector3 left = lightdir.crossProduct(viewdir);
229	left.normalise();
230	Vector3 up = left.crossProduct(lightdir);
231	up.normalise();
232	//left = lightdir.crossProduct(up);
233	left.normalise();
234	Matrix4 viewMatrix( left.x, left.y, left.z, 0,
235	up.x, up.y, up.z, 0,
236	lightdir.x, lightdir.y, lightdir.z, 0,
237	0, 0, 0, 1);
238
239	frun->setLightMatrix(viewMatrix);
240	OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
241	frameNum);
242	frun->getMinMax(min, max);
243
244	float n;
245	float f;
246	float d = abs(max.y - min.y);
247
248	float z_n = nearclip / sinGamma;
249	float one_min_singamma = (1 - sinGamma);
250	float fact = d * pow(one_min_singamma, 2);
251	float z_f = z_n + d * sinGamma * fact;
252	n = (z_n + sqrt(z_f * z_n)) / sinGamma;
253	///n = 100000;
254	f = n + d;
255
256	Vector3 pos = campos - up * (n - nearclip);
257	Matrix4 newViewMatrix( left.x, left.y, left.z, -left.dotProduct(pos),
258	up.x, up.y, up.z, -up.dotProduct(pos),
259	-lightdir.x, -lightdir.y, -lightdir.z, lightdir.dotProduct(pos),
260	0, 0, 0, 1);
261
262	Matrix4 lispMat = Matrix4::IDENTITY;
263
264	lispMat[1][1] = f / (f - n);
265	lispMat[1][3] = f * n / (f - n);
266	lispMat[3][1] = 1;
267	lispMat[3][3] = 0;
268
269	//depthMapCamera->setCustomProjectionMatrix(true, Matrix4::IDENTITY);
270	//depthMapCamera->setCustomViewMatrix(true, lispMat * newViewMatrix);
271
272	depthMapCamera->setCustomProjectionMatrix(true, lispMat);
273	depthMapCamera->setCustomViewMatrix(true, newViewMatrix);
274	}
275	else
276	{
277	depthMapCamera->setCustomProjectionMatrix(true, Matrix4::IDENTITY);
278	depthMapCamera->setCustomViewMatrix(false);
279	depthMapCamera->setPosition(lightpos);
280	depthMapCamera->setDirection(lightdir);
281	}
282
283
284	Matrix4 lightMatrix = depthMapCamera->getViewMatrix();
285	//frun->setLightMatrix(lightMatrix);
286	frun->setLightMatrix(depthMapCamera->getProjectionMatrix() * lightMatrix);
287
288	OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
289	frameNum);
290
291	frun->getMinMax(min, max);
292
293
294	Vector3 scale = (max - min);
295	scale *= 1.5; // just for safety
296	if(uselispsm)
297	scale.z += 1;
298	else
299	scale.z += 1000; //TODO: get scene bounding box to set z scale
300	Matrix4 projection = Matrix4::IDENTITY;
301	Matrix4 trans = Matrix4::IDENTITY;
302	trans.setTrans(Vector3(-(max.x + min.x) / 2.0,
303	-(max.y + min.y) / 2.0,
304	-(max.z + min.z) / 2.0));
305	Matrix4 scaleM = Matrix4::IDENTITY;
306	scaleM.setScale(Vector3(2.0 / scale.x, 2.0 / scale.y, -2.0 / scale.z));
307	projection = scaleM * trans;
308	//depthMapCamera->setCustomProjectionMatrix(true, projection);
309	lightFarPlane = scale.z;
310	depthMapCamera->setCustomProjectionMatrix(true, projection * depthMapCamera->getProjectionMatrix());
311	}
312	else if(light->getType() == Light::LT_SPOTLIGHT)
313	{
314	triggerName = "ILLUM_TRIGGER_SM_SPOT";
315	Camera* viewcam = OgreIlluminationManager::getSingleton().getMainCamera();
316
317	OgreFocusingMapRenderingRun* frun = (OgreFocusingMapRenderingRun*)
318	OgreIlluminationManager::getSingleton().getGlobalRun(ILLUMRUN_FOCUSING_MAP)->asOgreRenderingRun();
319	frun->setCameraMatrices(viewcam->getViewMatrix(), viewcam->getProjectionMatrix());
320
321	Vector3 lightpos = light->getDerivedPosition();
322	Vector3 lightdir = light->getDerivedDirection();
323	lightdir.normalise();
324	Radian lightangle = light->getSpotlightOuterAngle();
325
326	Vector3 min;
327	Vector3 max;
328
329	if(uselispsm)
330	{
331	Camera* maincam = OgreIlluminationManager::getSingleton().getMainCamera();
332	Vector3 viewdir = maincam->getDirection();
333	viewdir.normalise();
334	Vector3 campos = maincam->getPosition();
335	float nearclip = maincam->getNearClipDistance();
336
337	float dotprod = viewdir.dotProduct(lightdir);
338	float sinGamma = sqrt(1.0 - dotprod * dotprod);
339
340	Vector3 left = lightdir.crossProduct(viewdir);
341	Vector3 up = left.crossProduct(lightdir);
342	up.normalise();
343	//left = lightdir.crossProduct(up);
344	left.normalise();
345
346	depthMapCamera->setCustomProjectionMatrix(false);
347	depthMapCamera->setProjectionType(PT_PERSPECTIVE);
348	depthMapCamera->setFOVy(lightangle);
349	depthMapCamera->setAspectRatio(1);
350	depthMapCamera->setNearClipDistance(0.1);
351	depthMapCamera->setFarClipDistance(1.0);
352
353	Matrix4 projMatrix = depthMapCamera->getProjectionMatrixWithRSDepth();
354
355	Matrix4 viewMatrix( left.x, left.y, left.z, 0,
356	up.x, up.y, up.z, 0,
357	-lightdir.x, -lightdir.y, -lightdir.z, 0,
358	0, 0, 0, 1);
359
360	frun->setLightMatrix(projMatrix * viewMatrix);
361	OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
362	frameNum);
363	frun->getMinMax(min, max);
364
365	float n;
366	float f;
367	float d = abs(max.y - min.y);
368
369	float z_n = nearclip / sinGamma;
370	float one_min_singamma = (1 - sinGamma);
371	float fact = d * pow(one_min_singamma, 2);
372	float z_f = z_n + d * sinGamma * fact;
373	n = (z_n + sqrt(z_f * z_n)) / sinGamma;
374	///n = 100000;
375	f = n + d;
376
377	Vector3 pos = campos - up * (n - nearclip);
378	Matrix4 newViewMatrix( left.x, left.y, left.z, -left.dotProduct(pos),
379	up.x, up.y, up.z, -up.dotProduct(pos),
380	-lightdir.x, -lightdir.y, -lightdir.z, lightdir.dotProduct(pos),
381	0, 0, 0, 1);
382
383	Matrix4 lispMat = Matrix4::IDENTITY;
384
385	lispMat[1][1] = f / (f - n);
386	lispMat[1][3] = f * n / (f - n);
387	lispMat[3][1] = 1;
388	lispMat[3][3] = 0;
389
390	depthMapCamera->setCustomProjectionMatrix(true, Matrix4::IDENTITY);
391	depthMapCamera->setCustomViewMatrix(true, lispMat * projMatrix * newViewMatrix);
392	}
393	else
394	{
395	depthMapCamera->setCustomProjectionMatrix(false);
396	depthMapCamera->setCustomViewMatrix(false);
397	depthMapCamera->setPosition(lightpos);
398	depthMapCamera->setDirection(lightdir);
399	depthMapCamera->setProjectionType(PT_PERSPECTIVE);
400	depthMapCamera->setFOVy(lightangle);
401	depthMapCamera->setAspectRatio(1);
402	depthMapCamera->setNearClipDistance(OgreIlluminationManager::getSingleton().getAreaLightRadius());
403	depthMapCamera->setFarClipDistance(1.0);
404	}
405
406	if(!usefocusing)
407	{
408	lightFarPlane = light->getAttenuationRange();
409	depthMapCamera->setFarClipDistance(lightFarPlane);
410
411	}
412	else
413	{
414	Matrix4 lightMatrix = depthMapCamera->getViewMatrix();
415	frun->setLightMatrix(lightMatrix);
416
417	OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
418	frameNum);
419
420	frun->getMinMax(min, max);
421
422	if(min.z < 0)
423	{
424	float farP= -1.5 * min.z;
425	if(farP < 0.2) farP = 0.2;
426	depthMapCamera->setFarClipDistance(farP);
427	lightFarPlane = farP;
428
429	Vector3 scale = (max - min);
430	scale *= 1.5; // just for safety
431
432	Matrix4 projection = Matrix4::IDENTITY;
433	Matrix4 trans = Matrix4::IDENTITY;
434	trans.setTrans(Vector3(-(max.x + min.x) / 2.0,
435	-(max.y + min.y) / 2.0,
436	0));
437	Matrix4 scaleM = Matrix4::IDENTITY;
438	scaleM.setScale(Vector3(2.0 / scale.x, 2.0 / scale.y, 1));
439	projection = scaleM * trans;
440	depthMapCamera->setCustomProjectionMatrix(true, projection * depthMapCamera->getProjectionMatrix());
441	}
442	}
443	}
444	else//point light
445	{
446	lightFarPlane = light->getAttenuationRange();
447	triggerName = "ILLUM_TRIGGER_SM_POINT";
448	//no other adjustment needed
449	}
450	}
451	}
452
453	Matrix4 OgreDepthShadowMapRenderingRun::getLightViewMatrix()
454	{
455	Camera* cam = depthMapCamera;
456	if(light->getType() == Light::LT_POINT)
457	cam = depthMapTexture->getBuffer(4, 0).getPointer()->getRenderTarget()->getViewport(0)->getCamera();
458
459	return cam->getViewMatrix();
460	}
461
462	Matrix4 OgreDepthShadowMapRenderingRun::getLightViewProjMatrix()
463	{
464	Camera* cam = depthMapCamera;
465	if(light->getType() == Light::LT_POINT)
466	cam = depthMapTexture->getBuffer(4, 0).getPointer()->getRenderTarget()->getViewport(0)->getCamera();
467
468	return cam->getProjectionMatrixWithRSDepth() * cam->getViewMatrix();
469	}
470
471	void OgreDepthShadowMapRenderingRun::freeAllResources()
472	{
473	this->blurredDepthMapTexture = 0;
474	this->depthMapTexture = 0;
475	TextureManager::getSingleton().remove(name);
476	TextureManager::getSingleton().remove(blurredname);
477	Root::getSingleton()._getCurrentSceneManager()->destroyCamera(name + "_CAMERA");
478	}

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source: GTP/trunk/Lib/Illum/IllumModule/OgreIllumModule/src/RenderingRuns/OgreDepthShadowMapRenderingRun.cpp @ 2551

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