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source: GTP/trunk/Lib/Illum/IllumModule/OgreIllumModule/src/RenderTechniques/OgreDepthShadowRecieverRenderTechnique.cpp @ 1130

Revision 1130, 5.7 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_ANISOTROPIC);
54
55	newpass->setSceneBlending(SBT_MODULATE);
56	//newpass->setSceneBlending(SBF_ONE, SBF_ZERO);
57	newpass->setDepthBias(1);
58	techn->movePass(lastpass, index);
59	}
60
61	}
62
63	OgreDepthShadowRecieverRenderTechnique::~OgreDepthShadowRecieverRenderTechnique()
64	{
65
66	}
67
68	void OgreDepthShadowRecieverRenderTechnique::update(unsigned long frameNum)
69	{
70	LightList lights;
71	Root::getSingleton()._getCurrentSceneManager()->_populateLightList(
72	((OgreSharedRuns*) sharedRuns)->getRootPosition(),
73	100000.0,
74	lights);
75
76	//fill passes
77	for(unsigned int i = 0; i < passes.size(); i++)
78	{
79	if(lights.size() > i)
80	{
81	//create run if not exists
82	OgreIlluminationManager::getSingleton().createPerLightRun(lights.at(i)->getName(),
83	ILLUMRUN_DEPTH_SHADOWMAP);
84	//update light depth map
85	OgreIlluminationManager::getSingleton().updatePerLightRun(lights.at(i)->getName(),
86	ILLUMRUN_DEPTH_SHADOWMAP,
87	frameNum);
88
89	//set texture to pass
90	OgreDepthShadowMapRenderingRun* depthRun =
91	(OgreDepthShadowMapRenderingRun*) OgreIlluminationManager::getSingleton()
92	.getPerLightRun(lights.at(i)->getName(),
93	ILLUMRUN_DEPTH_SHADOWMAP)->asOgreRenderingRun();
94
95	passes.at(i)->getTextureUnitState(0)->setTextureName(
96	depthRun->getDepthMapTextureName());
97
98	//TODO: set matrices
99	GpuProgramParametersSharedPtr fpParams = passes.at(i)->getFragmentProgramParameters();
100	GpuProgramParametersSharedPtr vpParams = passes.at(i)->getVertexProgramParameters();
101
102	//fpParams->setNamedConstant("lightViewProj", depthRun->getLightViewProjMatrix());
103	vpParams->setNamedConstant("lightViewProj", depthRun->getLightViewProjMatrix());
104
105	passes.at(i)->setActive(true);
106	}
107	else
108	passes.at(i)->setActive(false);
109
110	}
111	}
112
113
114	///Technique parsers
115	namespace DepthShadowRecieverParsers
116	{
117	void parseMaxLights(String& params, RenderTechniqueFactory* factory)
118	{
119	OgreDepthShadowRecieverRenderTechniqueFactory* f = (OgreDepthShadowRecieverRenderTechniqueFactory*) factory;
120	f->maxlights = StringConverter::parseInt(params);
121	}
122
123	void parseVertexProgram(String& params, RenderTechniqueFactory* factory)
124	{
125	OgreDepthShadowRecieverRenderTechniqueFactory* f = (OgreDepthShadowRecieverRenderTechniqueFactory*) factory;
126	f->shadowVertexProgram = params;
127	}
128
129	void parseFragmentProgram(String& params, RenderTechniqueFactory* factory)
130	{
131	OgreDepthShadowRecieverRenderTechniqueFactory* f = (OgreDepthShadowRecieverRenderTechniqueFactory*) factory;
132	f->shadowFragmentProgram = params;
133	}
134	}
135
136	OgreDepthShadowRecieverRenderTechniqueFactory::OgreDepthShadowRecieverRenderTechniqueFactory()
137	{
138	typeName = "DepthShadowReciever";
139
140	using namespace DepthShadowRecieverParsers;
141	//register parsers
142	this->attributeParsers.insert(AttribParserList::value_type("max_light_count", (ILLUM_ATTRIBUTE_PARSER) parseMaxLights));
143	this->attributeParsers.insert(AttribParserList::value_type("vertex_program_name", (ILLUM_ATTRIBUTE_PARSER) parseVertexProgram));
144	this->attributeParsers.insert(AttribParserList::value_type("fragment_program_name", (ILLUM_ATTRIBUTE_PARSER) parseFragmentProgram));
145	}
146
147	OgreRenderTechnique* OgreDepthShadowRecieverRenderTechniqueFactory::createInstance(
148	IllumTechniqueParams* params,
149	Pass* pass,
150	OgreRenderable* parentRenderable,
151	OgreTechniqueGroup* parentTechniqueGroup)
152	{
153	//reset parameters
154	maxlights = 1;
155	shadowVertexProgram = "GameTools/ShadowMap/ShadowVS";
156	shadowFragmentProgram = "GameTools/ShadowMap/ShadowPS";
157
158	parseParams(params);
159
160	OgreDepthShadowRecieverRenderTechnique* result = new OgreDepthShadowRecieverRenderTechnique(
161	maxlights,
162	shadowVertexProgram,
163	shadowFragmentProgram,
164	pass,
165	parentRenderable,
166	parentTechniqueGroup);
167
168	return result;
169	}
170

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