Esempi in C++ (Cpp) per GpuProgramParametersSharedPtr::_findNamedConstantDefinition

Esempio n. 1

File: DLight.cpp Progetto: Longwood/reborn

//-----------------------------------------------------------------------
void DLight::updateFromCamera(Ogre::Camera* camera)
{
  //Set shader params
  const Ogre::MaterialPtr& mat = getMaterial();

  if(!mat->isLoaded())
  {
    mat->load();
  }

  Ogre::Technique* tech = mat->getBestTechnique();
  //  tech = mat->getTechnique(0);//без этого бест техника почемуто возвращает хрень
  Ogre::Vector3 farCorner = camera->getViewMatrix(true) * camera->getWorldSpaceCorners()[4];

  for(unsigned short i = 0; i < tech->getNumPasses(); ++i)
  {
    Ogre::Pass* pass = tech->getPass(i);
    // get the vertex shader parameters
    Ogre::GpuProgramParametersSharedPtr params = pass->getVertexProgramParameters();

    // set the camera's far-top-right corner
    if(params->_findNamedConstantDefinition("farCorner"))
    {
      params->setNamedConstant("farCorner", farCorner);
    }

    params = pass->getFragmentProgramParameters();

    if(params->_findNamedConstantDefinition("farCorner"))
    {
      params->setNamedConstant("farCorner", farCorner);
    }

    //If inside light geometry, render back faces with CMPF_GREATER, otherwise normally
    if(mParentLight->getType() == Ogre::Light::LT_DIRECTIONAL)
    {
      pass->setCullingMode(Ogre::CULL_CLOCKWISE);
      pass->setDepthCheckEnabled(false);
    }
    else
    {
      pass->setDepthCheckEnabled(true);

      if(isCameraInsideLight(camera))
      {
        pass->setCullingMode(Ogre::CULL_ANTICLOCKWISE);
        pass->setDepthFunction(Ogre::CMPF_GREATER_EQUAL);
      }
      else
      {
        pass->setCullingMode(Ogre::CULL_CLOCKWISE);
        pass->setDepthFunction(Ogre::CMPF_LESS_EQUAL);
      }
    }

    Camera shadowCam("ShadowCameraSetupCam", 0);
    shadowCam._notifyViewport(camera->getViewport());
    SceneManager* sm = mParentLight->_getManager();
    sm->getShadowCameraSetup()->getShadowCamera(sm,
                                                camera, camera->getViewport(), mParentLight, &shadowCam, 0);

    //Get the shadow camera position
    if(params->_findNamedConstantDefinition("shadowCamPos"))
    {
      params->setNamedConstant("shadowCamPos", shadowCam.getPosition());
    }

    if(params->_findNamedConstantDefinition("shadowFarClip"))
    {
      params->setNamedConstant("shadowFarClip", shadowCam.getFarClipDistance());
    }
  }
}