C++ material::TechniqueIterator类代码示例

void MaterialInstance::setColor(float red, float green, float blue, float alpha)
{
    if (mCopyMat.isNull ()) {
      createCopyMaterial ();
    }
	unsigned short i = 0, j;
	ColourValue sc, dc; // Source colur, destination colour
	Material::TechniqueIterator techniqueIt = mCopyMat->getTechniqueIterator ();
	while (techniqueIt.hasMoreElements ()) 
	{
		Technique *t = techniqueIt.getNext ();
		Technique::PassIterator passIt = t->getPassIterator ();
		j = 0;
		while (passIt.hasMoreElements ()) 
		{
			sc = mOriginalMat->getTechnique (i)->getPass (j)->getDiffuse ();

			dc = sc;

			dc.a = alpha;
			dc.r = red;
			dc.g = green;
			dc.b = blue;
            passIt.peekNext ()->setAmbient (mOriginalMat->getTechnique (i)->getPass (j)->getAmbient ());
			passIt.peekNext ()->setDiffuse (dc);
			passIt.moveNext ();

			++j;
		}

		++i;
	}
}

void MaterialInstance::ChangeOriginalMaterial()
{
    if (mCopyMat.isNull ()) {
      createCopyMaterial ();
    }
	unsigned short i = 0, j;
	ColourValue sc, dc; // Source colur, destination colour
	Material::TechniqueIterator techniqueIt = mCopyMat->getTechniqueIterator ();
	while (techniqueIt.hasMoreElements ()) 
	{
		Technique *t = techniqueIt.getNext ();
		Technique::PassIterator passIt = t->getPassIterator ();
		j = 0;
		while (passIt.hasMoreElements ()) 
		{
			sc = mOriginalMat->getTechnique (i)->getPass (j)->getDiffuse ();

            passIt.peekNext ()->setAmbient (mOriginalMat->getTechnique (i)->getPass (j)->getAmbient ());
			passIt.peekNext ()->setDiffuse (sc);
			passIt.moveNext ();

			++j;
		}

		++i;
	}
}

void CarModel::ChangeClr()
{
	int i = iColor;
	float c_h = pSet->gui.car_hue[i], c_s = pSet->gui.car_sat[i],
	      c_v = pSet->gui.car_val[i], gloss = pSet->gui.car_gloss[i], refl = pSet->gui.car_refl[i];
	color.setHSB(1-c_h, c_s, c_v);  //set, mini pos clr

	MaterialPtr mtr = MaterialManager::getSingleton().getByName(sMtr[Mtr_CarBody]);
	if (!mtr.isNull())
	{	Material::TechniqueIterator techIt = mtr->getTechniqueIterator();
		while (techIt.hasMoreElements())
		{	Technique* tech = techIt.getNext();
			Technique::PassIterator passIt = tech->getPassIterator();
			while (passIt.hasMoreElements())
			{	Pass* pass = passIt.getNext();
				if (pass->hasFragmentProgram())
				{
					GpuProgramParametersSharedPtr params = pass->getFragmentProgramParameters();
					params->setNamedConstant("carColour", color);
					params->setNamedConstant("glossiness", 1 - gloss);
					params->setNamedConstant("reflectiveness", refl);
	}	}	}	}

	if (pNickTxt)
		pNickTxt->setTextColour(MyGUI::Colour(color.r,color.g,color.b));
	
	// opp list text and mini pos colors - auto in hud update
}

void MaterialFactory::setShadowsEnabled(bool bEnable)
{
	for (std::vector<MaterialDefinition*>::iterator it=mDefinitions.begin();
		it!=mDefinitions.end(); ++it)
	{
		MaterialPtr mat = MaterialManager::getSingleton().getByName( (*it)->getName() );
			
		if (mat.isNull()) continue;
		
		Material::TechniqueIterator techIt = mat->getTechniqueIterator();
		while (techIt.hasMoreElements())
		{
			Technique* tech = techIt.getNext();
			Technique::PassIterator passIt = tech->getPassIterator();
			while (passIt.hasMoreElements())
			{
				Pass* pass = passIt.getNext();
									
				if (pass->hasFragmentProgram())
				{
					if ( pass->getFragmentProgramParameters()->_findNamedConstantDefinition("enableShadows", false))
						pass->getFragmentProgramParameters()->setNamedConstant("enableShadows", Real(bEnable));
				}
			}
		}
		
	}
}

void MaterialInstance::setSceneBlending (SceneBlendType sbt) {
  mSBT = sbt;

  if (!mCopyMat.isNull ()) {
    Material::TechniqueIterator techniqueIt = mCopyMat->getTechniqueIterator ();
    while (techniqueIt.hasMoreElements ()) {
      Technique *t = techniqueIt.getNext ();
      Technique::PassIterator passIt = t->getPassIterator ();
      while (passIt.hasMoreElements ()) {
        passIt.getNext ()->setSceneBlending (mSBT);
      }
    }
  }
}

void MaterialInstance::setTransparency (Real transparency) {
  mCurrentTransparency = transparency;
  if (mCurrentTransparency > 0.0f) {
    if (mCurrentTransparency > 1.0f)
      mCurrentTransparency = 1.0f;
    
    if (mCopyMat.isNull ()) {
      createCopyMaterial ();
    }
      
    unsigned short i = 0, j;
    ColourValue sc, dc; // Source colur, destination colour
    Material::TechniqueIterator techniqueIt = mCopyMat->getTechniqueIterator ();
    while (techniqueIt.hasMoreElements ()) {
      Technique *t = techniqueIt.getNext ();
      Technique::PassIterator passIt = t->getPassIterator ();
      j = 0;
      while (passIt.hasMoreElements ()) {
        sc = mOriginalMat->getTechnique (i)->getPass (j)->getDiffuse ();

        switch (mSBT) {
          case SBT_ADD:
            dc = sc;
            dc.r -= sc.r * mCurrentTransparency;
            dc.g -= sc.g * mCurrentTransparency;
            dc.b -= sc.b * mCurrentTransparency;
            passIt.peekNext ()->setAmbient (ColourValue::Black);
            break;
          case SBT_TRANSPARENT_ALPHA:
          default:
            dc = sc;
            dc.a = sc.a * (1.0f - mCurrentTransparency);
            passIt.peekNext ()->setAmbient (mOriginalMat->getTechnique (i)->getPass (j)->getAmbient ());
            break;
        }
        passIt.peekNext ()->setDiffuse (dc);
        passIt.moveNext ();
            
        ++j;
      }
          
      ++i;
    }
  }
  else {
    mCurrentTransparency = 0.0f;
  }
}

//-------------------------------------------------------------------------------------------------------
//  utility
//-------------------------------------------------------------------------------------------------------
void CarModel::UpdateLightMap()
{
	MaterialPtr mtr;
	for (int i=0; i < NumMaterials; ++i)
	{
		mtr = MaterialManager::getSingleton().getByName(sMtr[i]);
		if (!mtr.isNull())
		{	Material::TechniqueIterator techIt = mtr->getTechniqueIterator();
			while (techIt.hasMoreElements())
			{	Technique* tech = techIt.getNext();
				Technique::PassIterator passIt = tech->getPassIterator();
				while (passIt.hasMoreElements())
				{	Pass* pass = passIt.getNext();
					if (pass->hasFragmentProgram())
					{
						GpuProgramParametersSharedPtr params = pass->getFragmentProgramParameters();
						params->setIgnoreMissingParams(true);  // don't throw exception if material doesnt use lightmap
						params->setNamedConstant("enableTerrainLightMap", bLightMapEnabled ? 1.f : 0.f);
	}	}	}	}	}
}

//===========================================================================
// MaterialPassAction
//===========================================================================
void IMaterialPassAction::subEntityAction( SubEntityMaterial* subEntity ) const
{
  if( !subEntity->getMaterial().isNull() )
  {
    unsigned short i = 0 ;
    for( Material::TechniqueIterator techniqueIt = subEntity->getMaterial()->getTechniqueIterator() ;
         techniqueIt.hasMoreElements() ;
         techniqueIt.moveNext(), ++i )
    {
      Technique* techniqueScr = subEntity->getMaterial()->getTechnique( i ) ;
      unsigned short j = 0;
      for( Technique::PassIterator passIt = techniqueIt.peekNext()->getPassIterator ();
           passIt.hasMoreElements() ;
           passIt.moveNext(), ++j )
      {
        passAction( subEntity, passIt.peekNext(), techniqueScr->getPass( j ) ) ;
      }
    }
  }
}

void MaterialInstance::createCopyMaterial () {
	String name;
	// Avoid name collision
	do {
		name = mOriginalMat->getName () + StringConverter::toString (Math::UnitRandom ());
	} while (MaterialManager::getSingleton ().resourceExists (name));

	mCopyMat = mOriginalMat->clone (name);

	Material::TechniqueIterator techniqueIt = mCopyMat->getTechniqueIterator ();
	while (techniqueIt.hasMoreElements ()) {
		Technique *t = techniqueIt.getNext ();
		Technique::PassIterator passIt = t->getPassIterator ();
		while (passIt.hasMoreElements ()) {
			passIt.peekNext ()->setDepthWriteEnabled (false);
			passIt.peekNext ()->setSceneBlending (mSBT);
			passIt.moveNext ();
		}
	}
}

	//--------------------------------------------------------------------------------
	void MaterialUtil::correctAlpha(const MaterialPtr& _material)
	{
		if(isPortal(_material) || isGhostOccluder(_material))
		{
			// create fully transparent material
			Material::TechniqueIterator it = _material->getTechniqueIterator();
			while(it.hasMoreElements())
			{
				Technique* technique = it.getNext();
				Technique::PassIterator it2 = technique->getPassIterator();
				while(it2.hasMoreElements())
				{
					Pass* pass = it2.getNext();
					pass->setAlphaRejectFunction(Ogre::CMPF_ALWAYS_FAIL);
				}
			}
		}
		else
		{
			Material::TechniqueIterator it = _material->getTechniqueIterator();
			while(it.hasMoreElements())
			{
				Technique* technique = it.getNext();
				Technique::PassIterator it2 = technique->getPassIterator();
				while(it2.hasMoreElements())
				{
					Pass* pass = it2.getNext();
					pass->setAlphaRejectFunction(Ogre::CMPF_GREATER);
					pass->setAlphaRejectValue(220);
				}
			}
			_material->setReceiveShadows(true);
		}
	}

void MaterialFactory::update()
{
	for (std::vector<std::string>::const_iterator it = timeMtrs.begin();
		it != timeMtrs.end(); ++it)
	{
		MaterialPtr mtr = MaterialManager::getSingleton().getByName( (*it) );

		if (!mtr.isNull())
		{	Material::TechniqueIterator techIt = mtr->getTechniqueIterator();
			while (techIt.hasMoreElements())
			{	Technique* tech = techIt.getNext();
				Technique::PassIterator passIt = tech->getPassIterator();
				while (passIt.hasMoreElements())
				{	Pass* pass = passIt.getNext();

					// time
					if (pass->hasFragmentProgram() && pass->getFragmentProgramParameters()->_findNamedConstantDefinition("time", false))
						pass->getFragmentProgramParameters()->setNamedConstantFromTime( "time", 1 );
				}
			}	
		}	
	}
}

void CarModel::UpdateBraking()
{
	if (brakes)
		brakes->setVisible(bBraking && mbVisible);

	std::string texName = sDirname + (bBraking ? "_body00_brake.png" : "_body00_add.png");

	MaterialPtr mtr = MaterialManager::getSingleton().getByName(sMtr[Mtr_CarBody]);
	if (!mtr.isNull())
	{	Material::TechniqueIterator techIt = mtr->getTechniqueIterator();
		while (techIt.hasMoreElements())
		{	Technique* tech = techIt.getNext();
			Technique::PassIterator passIt = tech->getPassIterator();
			while (passIt.hasMoreElements())
			{	Pass* pass = passIt.getNext();
				Pass::TextureUnitStateIterator tusIt = pass->getTextureUnitStateIterator();
				while (tusIt.hasMoreElements())
				{
					TextureUnitState* tus = tusIt.getNext();
					if (tus->getName() == "diffuseMap")
					{	tus->setTextureName( texName );  return;  }
	}	}	}	}
}

bool OcclusionQuery::isPotentialOccluder(Ogre::SceneNode* node)
{
    bool result = false;
    for (unsigned int i=0; i < node->numAttachedObjects(); ++i)
    {
        MovableObject* ob = node->getAttachedObject(i);
        std::string type = ob->getMovableType();
        if (type == "Entity")
        {
            Entity* ent = static_cast<Entity*>(ob);
            for (unsigned int j=0; j < ent->getNumSubEntities(); ++j)
            {
                // if any sub entity has a material with depth write off,
                // consider the object as not an occluder
                MaterialPtr mat = ent->getSubEntity(j)->getMaterial();

                Material::TechniqueIterator techIt = mat->getTechniqueIterator();
                while (techIt.hasMoreElements())
                {
                    Technique* tech = techIt.getNext();
                    Technique::PassIterator passIt = tech->getPassIterator();
                    while (passIt.hasMoreElements())
                    {
                        Pass* pass = passIt.getNext();

                        if (pass->getDepthWriteEnabled() == false)
                            return false;
                        else
                            result = true;
                    }
                }
            }
        }
    }
    return result;
}

//.........这里部分代码省略.........
			bool exists = false;
			shaderMap::iterator sit;
			for (sit = mShaderCache.begin();
				sit != mShaderCache.end(); ++sit)
			{
				if ( sit->second->isEqual( shaderProps ) )
				{
					exists = true;
					break;
				}
			}
			
			if (!exists)
				generator->mShaderCached = false;
			else
			{
				generator->mShaderCached = true;
				generator->mVertexProgram = sit->first.first;
				generator->mFragmentProgram = sit->first.second;
			}
						
			generator->mDef = (*it);
			generator->mShader = shaderProps;
			generator->generate();
			
			// insert into cache
			#ifdef USE_CACHE
			if (!exists)
			{
				if (!generator->mVertexProgram.isNull() && !generator->mFragmentProgram.isNull()) 
					mShaderCache[ std::make_pair(generator->mVertexProgram, generator->mFragmentProgram) ] = shaderProps;
				else
					delete shaderProps;
			}
			else
				delete shaderProps;
			#else
			delete shaderProps;
			#endif
		}
		
		bSettingsChanged = false;
		
		ti.update(); /// time
		float dt = ti.dt * 1000.f;
		LogO(String("::: Time MaterialFactory: ") + toStr(dt) + " ms");

		// recreate cloned car materials
		#ifndef ROAD_EDITOR
		pApp->recreateCarMtr();
		#endif
	}
	else
	{
		LogO("[MaterialFactory] settings not changed, using old materials");
	}
	
	
	// update params	
	for (std::vector<MaterialDefinition*>::iterator it=mDefinitions.begin();
		it!=mDefinitions.end(); ++it)
	{
		MaterialPtr mat = MaterialManager::getSingleton().getByName( (*it)->getName() );
		setShaderParams(mat);
	}
	
	#ifdef USE_CUSTOM_TERRAIN_MATERIAL
	// update terrain params
	if (!mTerrain) return;
	MaterialPtr terrainMat = mTerrain->_getMaterial();
	if (!terrainMat.isNull())
	{
		Material::TechniqueIterator techIt = terrainMat->getTechniqueIterator();
		while (techIt.hasMoreElements())
		{
			Technique* tech = techIt.getNext();
			Technique::PassIterator passIt = tech->getPassIterator();
			while (passIt.hasMoreElements())
			{
				Pass* pass = passIt.getNext();
				
				if (!pass->hasFragmentProgram()
				 || !pass->getFragmentProgramParameters()->_findNamedConstantDefinition("fadeStart_farDist", false)) continue;
				
				float fadeDist;
				if (mSceneMgr->getShadowFarDistance() != 0)
					fadeDist = getShadowsFadeDistance()/mSceneMgr->getShadowFarDistance();
				else
					fadeDist = 0.f;
																
				pass->getFragmentProgramParameters()->setNamedConstant("fadeStart_farDist", Vector3(
					fadeDist,
					mSceneMgr->getShadowFarDistance(),
					float(getShadowsFade())
				));
			}
		}
	}
	#endif
}

void CarReflection::Create()
{
	bFirstFrame = true;
	if (pSet->refl_mode == "single")  cubetexName = "ReflectionCube"; // single: use 1st cubemap
	else if (pSet->refl_mode == "full")
	{
		cubetexName = "ReflectionCube" + toStr(iIndex);
		// first cubemap: no index
		if (cubetexName == "ReflectionCube0")
			cubetexName = "ReflectionCube";
	}
	else /* static */
		cubetexName = "ReflectionCube";
	
	TextureManager* tm = TextureManager::getSingletonPtr();
	int size = ciShadowSizesA[pSet->refl_size];  // /2 ?

	//  create cube render texture
	if (! (pSet->refl_mode == "single" && iIndex != 0) )
	{
		cubetex = tm->createManual(cubetexName, 
			ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, TEX_TYPE_CUBE_MAP, 
			size,size, 0/*mips*/, PF_R8G8B8, TU_RENDERTARGET);
			//LogO("created rt cube");

		for (int face = 0; face < 6; face++)
		{
			Camera* mCam = pSceneMgr->createCamera("Reflect_" + toStr(iIndex) + "_" + toStr(face));
			mCam->setAspectRatio(1.0f);  mCam->setFOVy(Degree(90));
			mCam->setNearClipDistance(0.1);
			//mCam->setFarClipDistance(pSet->refl_dist);  //sky-

			RenderTarget* mRT = cubetex->getBuffer(face)->getRenderTarget();
			//LogO( "rt face Name: " + mRT->getName() );
			mRT->removeAllViewports();
			Viewport* vp = mRT->addViewport(mCam);
			vp->setOverlaysEnabled(false);
			vp->setVisibilityMask(RV_MaskReflect);
			mRT->setAutoUpdated(false);
			//mRT->addListener(this);  //-
			mCam->setPosition(Vector3::ZERO);

			Vector3 lookAt(0,0,0), up(0,0,0), right(0,0,0);  switch(face)
			{
				case 0:  lookAt.x =-1;  up.y = 1;  right.z = 1;  break;  // +X
				case 1:  lookAt.x = 1;  up.y = 1;  right.z =-1;  break;	 // -X
				case 2:  lookAt.y =-1;  up.z = 1;  right.x = 1;  break;	 // +Y
				case 3:  lookAt.y = 1;  up.z =-1;  right.x = 1;  break;	 // -Y
				case 4:  lookAt.z = 1;  up.y = 1;  right.x =-1;  break;	 // +Z
				case 5:  lookAt.z =-1;  up.y = 1;  right.x =-1;  break;	 // -Z
			}
			Quaternion orient( right, up, lookAt );  mCam->setOrientation( orient );
			pCams[face] = mCam;
			pRTs[face] = mRT;
		}
	}
	
	// Iterate through our materials and add an index to ReflectionCube texture reference
	for (int i=0; i < NumMaterials; i++)
	{
		MaterialPtr mtr = MaterialManager::getSingleton().getByName(sMtr[i]);
		if (!mtr.isNull())
		{	Material::TechniqueIterator techIt = mtr->getTechniqueIterator();
			while (techIt.hasMoreElements())
			{	Technique* tech = techIt.getNext();
				Technique::PassIterator passIt = tech->getPassIterator();
				while (passIt.hasMoreElements())
				{	Pass* pass = passIt.getNext();
					Pass::TextureUnitStateIterator tusIt = pass->getTextureUnitStateIterator();
					while (tusIt.hasMoreElements())
					{	
						TextureUnitState* tus = tusIt.getNext();
						if (tus->getTextureName() == "ReflectionCube")
							tus->setTextureName(cubetexName);
	}	}	}	}	}
}