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source: GTP/trunk/Lib/Illum/IllumModule/OgreIllumModule/src/RenderTechniques/OgreDepthShadowRecieverRenderTechnique.cpp @ 836

Revision 836, 5.5 KB checked in by szirmay, 18 years ago (diff)

Line
1	#include "OgreDepthShadowRecieverRenderTechnique.h"
2	#include "OgreTechniqueGroup.h"
3	#include "OgreIlluminationManager.h"
4	#include "OgreDepthShadowMapRenderingRun.h"
5
6	OgreDepthShadowRecieverRenderTechnique::OgreDepthShadowRecieverRenderTechnique(
7	int maxlights,
8	String shadowVertexProgram,
9	String shadowFragmentProgram,
10	Pass* pass,
11	OgreRenderable* parentRenderable,
12	OgreTechniqueGroup* parentTechniqueGroup)
13	:RenderTechnique( parentRenderable, parentTechniqueGroup),
14	OgreRenderTechnique(pass, parentRenderable, parentTechniqueGroup),
15	DepthShadowRecieverRenderTechnique(parentRenderable, parentTechniqueGroup)
16	{
17	this->maxlights = maxlights;
18	this->shadowVertexProgram = shadowVertexProgram ;
19	this->shadowFragmentProgram = shadowFragmentProgram;
20
21
22	//insert new passes
23	Ogre::Technique* techn = pass->getParent();
24	Technique::PassIterator it = techn->getPassIterator();
25
26	int index = 0;
27	while(it.hasMoreElements())
28	{
29	if( it.getNext() == pass)
30	break;
31	index++;
32	it.moveNext();
33	}
34
35	index++;
36	for(int i = 0; i < maxlights; i++)
37	{
38	int lastpass = techn->getNumPasses();
39	Pass* newpass = techn->createPass();
40	passes.push_back(newpass);
41
42	newpass->setVertexProgram(shadowVertexProgram);
43	newpass->setFragmentProgram(shadowFragmentProgram);
44
45	GpuProgramParameters* Vparams = newpass->getVertexProgramParameters().getPointer();
46	Vparams->setNamedAutoConstant("worldViewProj",
47	GpuProgramParameters::ACT_WORLDVIEWPROJ_MATRIX);
48	Vparams->setNamedAutoConstant("world",
49	GpuProgramParameters::ACT_WORLD_MATRIX);
50	GpuProgramParameters* Fparams = newpass->getFragmentProgramParameters().getPointer();
51
52	TextureUnitState* st = newpass->createTextureUnitState();
53	st->setTextureFiltering(TFO_BILINEAR);
54
55	newpass->setSceneBlending(SBT_MODULATE);
56
57	techn->movePass(lastpass, index);
58	}
59
60	}
61
62	OgreDepthShadowRecieverRenderTechnique::~OgreDepthShadowRecieverRenderTechnique()
63	{
64
65	}
66
67	void OgreDepthShadowRecieverRenderTechnique::update(unsigned long frameNum)
68	{
69	LightList lights;
70	Root::getSingleton()._getCurrentSceneManager()->_populateLightList(
71	((OgreSharedRuns*) sharedRuns)->getRootPosition(),
72	100000.0,
73	lights);
74
75	//fill passes
76	for(unsigned int i = 0; i < passes.size(); i++)
77	{
78	if(lights.size() > i)
79	{
80	//create run if not exists
81	OgreIlluminationManager::getSingleton().createPerLightRun(lights.at(i)->getName(),
82	ILLUMRUN_DEPTH_SHADOWMAP);
83	//update light depth map
84	OgreIlluminationManager::getSingleton().updatePerLightRun(lights.at(i)->getName(),
85	ILLUMRUN_DEPTH_SHADOWMAP,
86	frameNum);
87
88	//set texture to pass
89	OgreDepthShadowMapRenderingRun* depthRun =
90	(OgreDepthShadowMapRenderingRun*) OgreIlluminationManager::getSingleton()
91	.getPerLightRun(lights.at(i)->getName(),
92	ILLUMRUN_DEPTH_SHADOWMAP)->asOgreRenderingRun();
93
94	passes.at(i)->getTextureUnitState(0)->setTextureName(
95	depthRun->getDepthMapTextureName());
96
97	//TODO: set matrices
98	GpuProgramParametersSharedPtr fpParams = passes.at(i)->getFragmentProgramParameters();
99	fpParams->setNamedConstant("lightView", depthRun->getLightViewMatrix());
100	fpParams->setNamedConstant("lightViewProj", depthRun->getLightViewProjMatrix());
101
102	passes.at(i)->setActive(true);
103	}
104	else
105	passes.at(i)->setActive(false);
106
107	}
108	}
109
110
111	///Technique parsers
112	namespace DepthShadowRecieverParsers
113	{
114	void parseMaxLights(String& params, RenderTechniqueFactory* factory)
115	{
116	OgreDepthShadowRecieverRenderTechniqueFactory* f = (OgreDepthShadowRecieverRenderTechniqueFactory*) factory;
117	f->maxlights = StringConverter::parseInt(params);
118	}
119
120	void parseVertexProgram(String& params, RenderTechniqueFactory* factory)
121	{
122	OgreDepthShadowRecieverRenderTechniqueFactory* f = (OgreDepthShadowRecieverRenderTechniqueFactory*) factory;
123	f->shadowVertexProgram = params;
124	}
125
126	void parseFragmentProgram(String& params, RenderTechniqueFactory* factory)
127	{
128	OgreDepthShadowRecieverRenderTechniqueFactory* f = (OgreDepthShadowRecieverRenderTechniqueFactory*) factory;
129	f->shadowFragmentProgram = params;
130	}
131	}
132
133	OgreDepthShadowRecieverRenderTechniqueFactory::OgreDepthShadowRecieverRenderTechniqueFactory()
134	{
135	typeName = "DepthShadowReciever";
136
137	using namespace DepthShadowRecieverParsers;
138	//register parsers
139	this->attributeParsers.insert(AttribParserList::value_type("max_light_count", (ILLUM_ATTRIBUTE_PARSER) parseMaxLights));
140	this->attributeParsers.insert(AttribParserList::value_type("vertex_program_name", (ILLUM_ATTRIBUTE_PARSER) parseVertexProgram));
141	this->attributeParsers.insert(AttribParserList::value_type("fragment_program_name", (ILLUM_ATTRIBUTE_PARSER) parseFragmentProgram));
142	}
143
144	OgreRenderTechnique* OgreDepthShadowRecieverRenderTechniqueFactory::createInstance(
145	IllumTechniqueParams* params,
146	Pass* pass,
147	OgreRenderable* parentRenderable,
148	OgreTechniqueGroup* parentTechniqueGroup)
149	{
150	//reset parameters
151	maxlights = 1;
152	shadowVertexProgram = "GameTools/ShadowMap/ShadowVS";
153	shadowFragmentProgram = "GameTools/ShadowMap/ShadowPS";
154
155	parseParams(params);
156
157	OgreDepthShadowRecieverRenderTechnique* result = new OgreDepthShadowRecieverRenderTechnique(
158	maxlights,
159	shadowVertexProgram,
160	shadowFragmentProgram,
161	pass,
162	parentRenderable,
163	parentTechniqueGroup);
164
165	return result;
166	}
167

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