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

Revision 836, 5.8 KB checked in by szirmay, 18 years ago (diff)

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1	#include "OgreCausticRecieverRenderTechnique.h"
2	#include "OgreTechniqueGroup.h"
3	#include "OgreIlluminationManager.h"
4	#include "OgreCausticCubeMapRenderingRun.h"
5	#include "OgreDistanceCubeMapRenderingRun.h"
6
7	OgreCausticRecieverRenderTechnique::OgreCausticRecieverRenderTechnique(
8	int maxcasters,
9	String causticVertexProgram,
10	String causticFragmentProgram,
11	Pass* pass,
12	OgreRenderable* parentRenderable,
13	OgreTechniqueGroup* parentTechniqueGroup)
14	:RenderTechnique( parentRenderable, parentTechniqueGroup),
15	OgreRenderTechnique(pass, parentRenderable, parentTechniqueGroup),
16	CausticRecieverRenderTechnique(parentRenderable, parentTechniqueGroup)
17	{
18	this->maxcasters = maxcasters;
19	this->causticVertexProgram = causticVertexProgram;
20	this->causticFragmentProgram = causticFragmentProgram;
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 < maxcasters; i++)
37	{
38	int lastpass = techn->getNumPasses();
39	Pass* newpass = techn->createPass();
40	passes.push_back(newpass);
41
42	newpass->setVertexProgram(causticVertexProgram);
43	newpass->setFragmentProgram(causticFragmentProgram);
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	Fparams->setNamedConstant("cubeMapCameraPosition", Vector3(0,0,0));
52
53	TextureUnitState* st = newpass->createTextureUnitState();
54	TextureUnitState* st2 = newpass->createTextureUnitState();
55
56	st->setTextureFiltering(TFO_BILINEAR);
57	st2->setTextureFiltering(TFO_BILINEAR);
58
59	newpass->setSceneBlending(SBF_DEST_COLOUR, SBF_ONE);
60	//newpass->setSceneBlending(SBT_ADD);
61
62	techn->movePass(lastpass, index);
63	}
64
65	}
66
67	OgreCausticRecieverRenderTechnique::~OgreCausticRecieverRenderTechnique()
68	{
69
70	}
71
72	void OgreCausticRecieverRenderTechnique::update(unsigned long frameNum)
73	{
74	//find nearest casters
75	causticCasters.clear();
76	OgreIlluminationManager::getSingleton().getNearestCausticCasters(
77	((OgreSharedRuns*)sharedRuns)->getRootPosition(),
78	&causticCasters,
79	maxcasters);
80	//fill passes
81	for(unsigned int i = 0; i < passes.size(); i++)
82	{
83	if(causticCasters.size() > i)
84	{
85
86	//update caustic caster
87	causticCasters.at(i)->updateRun(ILLUMRUN_PHOTONMAP, frameNum);
88	causticCasters.at(i)->updateRun(ILLUMRUN_CAUSTIC_CUBEMAP, frameNum);
89
90	//set texture to pass
91	OgreCausticCubeMapRenderingRun* cauCubeRun =
92	(OgreCausticCubeMapRenderingRun*) causticCasters.at(i)->
93	getRun(ILLUMRUN_CAUSTIC_CUBEMAP)->asOgreRenderingRun();
94	passes.at(i)->getTextureUnitState(0)->setTextureName(
95	cauCubeRun->getCausticCubeMapTextureName());
96
97	OgreDistanceCubeMapRenderingRun* cauPhotonRun =
98	(OgreDistanceCubeMapRenderingRun*) causticCasters.at(i)->
99	getRun(ILLUMRUN_DISTANCE_CUBEMAP)->asOgreRenderingRun();
100	passes.at(i)->getTextureUnitState(1)->setTextureName(
101	cauPhotonRun->getDistanceCubeMapTextureName());
102
103	//set caster position
104	GpuProgramParameters* Fparams = passes.at(i)->getFragmentProgramParameters().getPointer();
105	Fparams->setNamedConstant("cubeMapCameraPosition",
106	causticCasters.at(i)->getRootPosition(ILLUMRUN_CAUSTIC_CUBEMAP));
107	passes.at(i)->setActive(true);
108	}
109	else
110	passes.at(i)->setActive(false);
111
112	}
113	}
114
115
116	namespace CausticRecieverParsers
117	{
118	///Technique parsers
119	void parseMaxCasters(String& params, RenderTechniqueFactory* factory)
120	{
121	OgreCausticRecieverRenderTechniqueFactory* f = (OgreCausticRecieverRenderTechniqueFactory*) factory;
122	f->maxcasters = StringConverter::parseInt(params);
123	}
124
125	void parseVertexProgram(String& params, RenderTechniqueFactory* factory)
126	{
127	OgreCausticRecieverRenderTechniqueFactory* f = (OgreCausticRecieverRenderTechniqueFactory*) factory;
128	f->causticVertexProgram = params;
129	}
130
131	void parseFragmentProgram(String& params, RenderTechniqueFactory* factory)
132	{
133	OgreCausticRecieverRenderTechniqueFactory* f = (OgreCausticRecieverRenderTechniqueFactory*) factory;
134	f->causticFragmentProgram = params;
135	}
136	}
137	OgreCausticRecieverRenderTechniqueFactory::OgreCausticRecieverRenderTechniqueFactory()
138	{
139	typeName = "CausticReciever";
140
141	using namespace CausticRecieverParsers;
142	//register parsers
143	this->attributeParsers.insert(AttribParserList::value_type("max_caster_count", (ILLUM_ATTRIBUTE_PARSER) parseMaxCasters));
144	this->attributeParsers.insert(AttribParserList::value_type("vertex_program_name", (ILLUM_ATTRIBUTE_PARSER) parseVertexProgram));
145	this->attributeParsers.insert(AttribParserList::value_type("fragment_program_name", (ILLUM_ATTRIBUTE_PARSER) parseFragmentProgram));
146	}
147
148	OgreRenderTechnique* OgreCausticRecieverRenderTechniqueFactory::createInstance(
149	IllumTechniqueParams* params,
150	Pass* pass,
151	OgreRenderable* parentRenderable,
152	OgreTechniqueGroup* parentTechniqueGroup)
153	{
154	//reset parameters
155	maxcasters = 1;
156	causticVertexProgram = "GameTools/Caustic/DefaultVS";
157	causticFragmentProgram = "GameTools/Caustic/DefaultPS";
158
159	parseParams(params);
160
161	OgreCausticRecieverRenderTechnique* result = new OgreCausticRecieverRenderTechnique(
162	maxcasters,
163	causticVertexProgram,
164	causticFragmentProgram,
165	pass,
166	parentRenderable,
167	parentTechniqueGroup);
168
169	return result;
170	}

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