source: GTP/branches/IllumWPdeliver2008dec/IlluminationWP/source/OgreIllumModule/src/RenderTechniques/OgreSBBRenderTechnique.cpp @ 3255

#include "OgreSBBRenderTechnique.h"
#include "OgreTechniqueGroup.h"
#include "OgreIlluminationManager.h"
#include "OgreSceneCameraDepthRenderingRun.h"


OgreSBBRenderTechnique::OgreSBBRenderTechnique( unsigned char depthTexID,
                                                                                           bool bindTexture,
                                                                                                Pass* pass,
                                                                                                OgreRenderable* parentRenderable,
                                                                                                OgreTechniqueGroup* parentTechniqueGroup)
                                                        :RenderTechnique( parentRenderable, parentTechniqueGroup),
                                                        OgreRenderTechnique(pass, parentRenderable, parentTechniqueGroup),
                                                        SBBRenderTechnique(parentRenderable, parentTechniqueGroup)
{
        this->depthTexID = depthTexID;
        this->bindTexture = bindTexture;
        
        OgreIlluminationManager::getSingleton().createGlobalRun(ILLUMRUN_SCENE_CAMERA_DEPTH);   
        
        OgreSceneCameraDepthRenderingRun* run = (OgreSceneCameraDepthRenderingRun*)
                OgreIlluminationManager::getSingleton().getGlobalRun(ILLUMRUN_SCENE_CAMERA_DEPTH)->asOgreRenderingRun();

        Root::getSingleton().addFrameListener(this);
        OgreIlluminationManager::getSingleton().getMainViewport()
                                                                ->getTarget()->addListener(this);
        OgreIlluminationManager::getSingleton().addUpdateListener(this);
        
        if(bindTexture)
        pass->getTextureUnitState(depthTexID)->setTextureName(run->getDepthTextureName());
        
}

void OgreSBBRenderTechnique::preAllUpdates()
{
        lastVisibility = parentOgreRenderable->isVisible();
        parentOgreRenderable->setVisible(false);
}
void  OgreSBBRenderTechnique::preRenderTargetUpdate (const RenderTargetEvent &evt)
{
        //parentOgreRenderable->setVisible(lastVisibility);     
}
void  OgreSBBRenderTechnique::postRenderTargetUpdate (const RenderTargetEvent &evt)
{
        //parentOgreRenderable->setVisible(false);
}
bool  OgreSBBRenderTechnique::frameEnded (const FrameEvent &evt)
{
        
        return true;
}
void  OgreSBBRenderTechnique::postAllUpdates()
{
        parentOgreRenderable->setVisible(lastVisibility);       
}

OgreSBBRenderTechnique::~OgreSBBRenderTechnique()
{

}

void OgreSBBRenderTechnique::update(unsigned long frameNum)
{
        OgreIlluminationManager::getSingleton().updateGlobalRun(ILLUMRUN_SCENE_CAMERA_DEPTH, frameNum); 
}

namespace SBBParsers
{
///Technique parsers
        void parseDepthTexID(String& params, RenderTechniqueFactory* factory)
        {
                OgreSBBRenderTechniqueFactory* f = (OgreSBBRenderTechniqueFactory*) factory;
                f->depthTexID =  StringConverter::parseUnsignedInt(params);
        }
        void parseBindTexture(String& params, RenderTechniqueFactory* factory)
        {
                OgreSBBRenderTechniqueFactory* f = (OgreSBBRenderTechniqueFactory*) factory;
                f->bindTexture =  StringConverter::parseBool(params);
        }
}

OgreSBBRenderTechniqueFactory::OgreSBBRenderTechniqueFactory()
{
        typeName = "SphericalBillboard";
        
        using namespace SBBParsers;
        
        //register parsers
        this->attributeParsers.insert(AttribParserList::value_type("texture_unit_id", (ILLUM_ATTRIBUTE_PARSER) parseDepthTexID));
        this->attributeParsers.insert(AttribParserList::value_type("bind_texture", (ILLUM_ATTRIBUTE_PARSER) parseBindTexture));
}

OgreRenderTechnique* OgreSBBRenderTechniqueFactory::createInstance( 
                                                                                IllumTechniqueParams* params,
                                                                                Pass* pass,
                                                                                OgreRenderable* parentRenderable,
                                                                                OgreTechniqueGroup* parentTechniqueGroup)
{       
        //reset parameters
        depthTexID = 1;
        bindTexture = true;

        parseParams(params);

        OgreSBBRenderTechnique* result = new OgreSBBRenderTechnique(
                                                                                                depthTexID,
                                                                                                bindTexture,
                                                                                                pass,
                                                                                                parentRenderable,
                                                                                                parentTechniqueGroup);
        return result;
}