Ejemplo n.º 1
0
void LightFlareData::prepRender( SceneState *state, LightFlareState *flareState )
{    
   PROFILE_SCOPE( LightFlareData_prepRender );

   // No elements then nothing to render.
   if ( mElementCount == 0 )
      return;

   // We need these all over the place later.
   const Point3F &camPos = state->getCameraPosition();
   const RectI &viewport = GFX->getViewport();
   const Point3F &lightPos = flareState->lightMat.getPosition();
   LightInfo *lightInfo = flareState->lightInfo;

   bool isVectorLight = lightInfo->getType() == LightInfo::Vector;

   // Perform visibility testing on the light...
   // Project the light position from world to screen space, we need this
   // position later, and it tells us if it is actually onscreen.   
   
   Point3F lightPosSS;
   bool onscreen = MathUtils::mProjectWorldToScreen( lightPos, &lightPosSS, viewport, GFX->getWorldMatrix(), gClientSceneGraph->getNonClipProjection() );  

   U32 visDelta = U32_MAX;
   U32 fadeOutTime = 20;
   U32 fadeInTime = 125;    

   // Fade factor based on amount of occlusion.
   F32 occlusionFade = 1.0f;

   bool lightVisible = true;
   
   if ( !state->isReflectPass() )
   {
      // It is onscreen, so raycast as a simple occlusion test.

      U32 losMask =	STATIC_COLLISION_MASK |
                     ShapeBaseObjectType |
                     StaticTSObjectType |
                     ItemObjectType |
                     PlayerObjectType;

      GameConnection *conn = GameConnection::getConnectionToServer();
      if ( !conn )
         return;

      bool needsRaycast = true;

      // NOTE: if hardware does not support HOQ it will return NULL
      // and we will retry every time but there is not currently a good place
      // for one-shot initialization of LightFlareState
      if ( flareState->occlusionQuery == NULL )
         flareState->occlusionQuery = GFX->createOcclusionQuery();
      if ( flareState->fullPixelQuery == NULL )
         flareState->fullPixelQuery = GFX->createOcclusionQuery();

      if ( flareState->occlusionQuery && 
           ( ( isVectorLight && flareState->worldRadius > 0.0f ) || 
             ( !isVectorLight && mOcclusionRadius > 0.0f ) ) )
      {
         // Always treat light as onscreen if using HOQ
         // it will be faded out if offscreen anyway.
         onscreen = true;

         U32 pixels = -1;
         GFXOcclusionQuery::OcclusionQueryStatus status = flareState->occlusionQuery->getStatus( true, &pixels );

         String str = flareState->occlusionQuery->statusToString( status );
         Con::setVariable( "$Flare::OcclusionStatus", str.c_str() );
         Con::setIntVariable( "$Flare::OcclusionVal", pixels );
         
         if ( status == GFXOcclusionQuery::Occluded )
            occlusionFade = 0.0f;

         if ( status != GFXOcclusionQuery::Unset )         
            needsRaycast = false;

         RenderPassManager *pass = state->getRenderPass();

         OccluderRenderInst *ri = pass->allocInst<OccluderRenderInst>();   

         Point3F scale( Point3F::One );

         if ( isVectorLight && flareState->worldRadius > 0.0f )         
            scale *= flareState->worldRadius;
         else
            scale *= mOcclusionRadius;
         
         ri->type = RenderPassManager::RIT_Occluder;
         ri->query = flareState->occlusionQuery;   
         ri->query2 = flareState->fullPixelQuery;
         ri->position = lightPos;
         ri->scale = scale;
         ri->orientation = pass->allocUniqueXform( lightInfo->getTransform() );         
         ri->isSphere = true;
         state->getRenderPass()->addInst( ri );

         if ( status == GFXOcclusionQuery::NotOccluded )
         {
            U32 fullPixels;
            flareState->fullPixelQuery->getStatus( true, &fullPixels );

            occlusionFade = (F32)pixels / (F32)fullPixels;

            // Approximation of the full pixel count rather than doing
            // two queries, but it is not very accurate.
            /*
            F32 dist = ( camPos - lightPos ).len();
            F32 radius = scale.x;
            radius = ( radius / dist ) * state->getWorldToScreenScale().y;

            occlusionFade = (F32)pixels / (4.0f * radius * radius);
            occlusionFade = mClampF( occlusionFade, 0.0f, 1.0f );            
            */
         }
      }

      Con::setFloatVariable( "$Flare::OcclusionFade", occlusionFade );

      if ( needsRaycast )
      {
         // Use a raycast to determine occlusion.

         bool fps = conn->isFirstPerson();

         GameBase *control = conn->getControlObject();
         if ( control && fps )
            control->disableCollision();

         RayInfo rayInfo;

         if ( gClientContainer.castRayRendered( camPos, lightPos, losMask, &rayInfo ) )
            occlusionFade = 0.0f;

         if ( control && fps )
            control->enableCollision();
      }

      lightVisible = onscreen && occlusionFade > 0.0f;

      // To perform a fade in/out when we gain or lose visibility
      // we must update/store the visibility state and time.

      U32 currentTime = Sim::getCurrentTime();

      if ( lightVisible != flareState->visible )
      {
         flareState->visible = lightVisible;
         flareState->visChangedTime = currentTime;
      }      

      // Save this in the state so that we have it during the reflect pass.
      flareState->occlusion = occlusionFade;

      visDelta = currentTime - flareState->visChangedTime;      
   }
   else // state->isReflectPass()
   {
      occlusionFade = flareState->occlusion;
      lightVisible = flareState->visible;
      visDelta = Sim::getCurrentTime() - flareState->visChangedTime;
   }

   // We can only skip rendering if the light is not visible, and it
   // has elapsed the fadeOutTime.
   if ( !lightVisible && visDelta > fadeOutTime )
      return;

   // In a reflection we only render the elements with zero distance.   
   U32 elementCount = mElementCount;
   if ( state->isReflectPass()  )
   {
      elementCount = 0;
      for ( ; elementCount < mElementCount; elementCount++ )
      {
         if ( mElementDist[elementCount] > 0.0f )
            break;
      }
   }

   if ( elementCount == 0 )
      return;

   // A bunch of preparatory math before generating verts...

   const Point2I &vpExtent = viewport.extent;
   Point3F viewportExtent( vpExtent.x, vpExtent.y, 1.0f );
   Point2I halfViewportExtentI( viewport.extent / 2 );
   Point3F halfViewportExtentF( (F32)halfViewportExtentI.x * 0.5f, (F32)halfViewportExtentI.y, 0.0f );
   Point3F screenCenter( 0,0,0 );
   Point3F oneOverViewportExtent( 1.0f / viewportExtent.x, 1.0f / viewportExtent.y, 1.0f );

   lightPosSS.y -= viewport.point.y;
   lightPosSS *= oneOverViewportExtent;
   lightPosSS = ( lightPosSS * 2.0f ) - Point3F::One;
   lightPosSS.y = -lightPosSS.y;
   lightPosSS.z = 0.0f;

   Point3F flareVec( screenCenter - lightPosSS );
   F32 flareLength = flareVec.len();   
   flareVec.normalizeSafe();

   Point3F basePoints[4];
   basePoints[0] = Point3F( -0.5, 0.5, 0.0 );  
   basePoints[1] = Point3F( -0.5, -0.5, 0.0 );   
   basePoints[2] = Point3F( 0.5, -0.5, 0.0 );   
   basePoints[3] = Point3F( 0.5, 0.5, 0.0 );

   Point3F rotatedBasePoints[4];
   rotatedBasePoints[0] = basePoints[0];
   rotatedBasePoints[1] = basePoints[1];
   rotatedBasePoints[2] = basePoints[2];
   rotatedBasePoints[3] = basePoints[3];

   Point3F fvec( -1, 0, 0 );   
   F32 rot = mAcos( mDot( fvec, flareVec ) );
   Point3F rvec( 0, -1, 0 );
   rot *= mDot( rvec, flareVec ) > 0.0f ? 1.0f : -1.0f;

   vectorRotateZAxis( rotatedBasePoints[0], rot );
   vectorRotateZAxis( rotatedBasePoints[1], rot );
   vectorRotateZAxis( rotatedBasePoints[2], rot );
   vectorRotateZAxis( rotatedBasePoints[3], rot );

   // Here we calculate a the light source's influence on the effect's size
   // and brightness...

   // Scale based on the current light brightness compared to its normal output.
   F32 lightSourceBrightnessScale = lightInfo->getBrightness() / flareState->fullBrightness;
   // Scale based on world space distance from camera to light source.
   F32 lightSourceWSDistanceScale = ( isVectorLight ) ? 1.0f : getMin( 10.0f / ( lightPos - camPos ).len(), 1.5f );   
   // Scale based on screen space distance from screen position of light source to the screen center.
   F32 lightSourceSSDistanceScale = ( 1.5f - ( lightPosSS - screenCenter ).len() ) / 1.5f;

   // Scale based on recent visibility changes, fading in or out.
   F32 fadeInOutScale = 1.0f;
   if ( lightVisible && visDelta < fadeInTime && flareState->occlusion )
      fadeInOutScale = (F32)visDelta / (F32)fadeInTime;
   else if ( !lightVisible && visDelta < fadeOutTime )
      fadeInOutScale = 1.0f - (F32)visDelta / (F32)fadeOutTime;

   // This combined scale influences the size of all elements this effect renders.
   // Note we also add in a scale that is user specified in the Light.
   F32 lightSourceIntensityScale = lightSourceBrightnessScale * 
                                   lightSourceWSDistanceScale * 
                                   lightSourceSSDistanceScale * 
                                   fadeInOutScale * 
                                   flareState->scale *
                                   occlusionFade;

   // The baseColor which modulates the color of all elements.
   ColorF baseColor;
   if ( flareState->fullBrightness == 0.0f )
      baseColor = ColorF::BLACK;
   else
      // These are the factors which affect the "alpha" of the flare effect.
      // Modulate more in as appropriate.
      baseColor = ColorF::WHITE * lightSourceBrightnessScale * occlusionFade;

   // Fill in the vertex buffer...
   const U32 vertCount = 4 * elementCount;
   if (  flareState->vertBuffer.isNull() || 
         flareState->vertBuffer->mNumVerts != vertCount )
         flareState->vertBuffer.set( GFX, vertCount, GFXBufferTypeDynamic );

   GFXVertexPCT *pVert = flareState->vertBuffer.lock();

   const Point2I &widthHeightI = mFlareTexture.getWidthHeight();
   Point2F oneOverTexSize( 1.0f / (F32)widthHeightI.x, 1.0f / (F32)widthHeightI.y );

   for ( U32 i = 0; i < elementCount; i++ )
   {      
      Point3F *basePos = mElementRotate[i] ? rotatedBasePoints : basePoints;

      ColorF elementColor( baseColor * mElementTint[i] );
      if ( mElementUseLightColor[i] )
         elementColor *= lightInfo->getColor();

      Point3F elementPos;
      elementPos = lightPosSS + flareVec * mElementDist[i] * flareLength;      
      elementPos.z = 0.0f;

      F32 maxDist = 1.5f;
      F32 elementDist = mSqrt( ( elementPos.x * elementPos.x ) + ( elementPos.y * elementPos.y ) );
      F32 distanceScale = ( maxDist - elementDist ) / maxDist;
      distanceScale = 1.0f;

      const RectF &elementRect = mElementRect[i];
      Point3F elementSize( elementRect.extent.x, elementRect.extent.y, 1.0f );
      elementSize *= mElementScale[i] * distanceScale * mScale * lightSourceIntensityScale;

      if ( elementSize.x < 100.0f )
      {
         F32 alphaScale = mPow( elementSize.x / 100.0f, 2 );
         elementColor *= alphaScale;
      }

      elementColor.clamp();

      Point2F texCoordMin, texCoordMax;
      texCoordMin = elementRect.point * oneOverTexSize;
      texCoordMax = ( elementRect.point + elementRect.extent ) * oneOverTexSize;          

      pVert->color = elementColor;
      pVert->point = ( basePos[0] * elementSize * oneOverViewportExtent ) + elementPos;      
      pVert->texCoord.set( texCoordMin.x, texCoordMax.y );
      pVert++;

      pVert->color = elementColor;
      pVert->point = ( basePos[1] * elementSize * oneOverViewportExtent ) + elementPos;
      pVert->texCoord.set( texCoordMax.x, texCoordMax.y );
      pVert++;

      pVert->color = elementColor;
      pVert->point = ( basePos[2] * elementSize * oneOverViewportExtent ) + elementPos;
      pVert->texCoord.set( texCoordMax.x, texCoordMin.y );
      pVert++;

      pVert->color = elementColor;
      pVert->point = ( basePos[3] * elementSize * oneOverViewportExtent ) + elementPos;
      pVert->texCoord.set( texCoordMin.x, texCoordMin.y );
      pVert++;
   }   

   flareState->vertBuffer.unlock();   

   // Create and submit the render instance...
   
   RenderPassManager *renderManager = state->getRenderPass();
   ParticleRenderInst *ri = renderManager->allocInst<ParticleRenderInst>();

   ri->vertBuff = &flareState->vertBuffer;
   ri->primBuff = &mFlarePrimBuffer;
   ri->translucentSort = true;
   ri->type = RenderPassManager::RIT_Particle;
   ri->sortDistSq = ( lightPos - camPos ).lenSquared();

   ri->modelViewProj = &MatrixF::Identity;
   ri->bbModelViewProj = ri->modelViewProj;

   ri->count = elementCount;

   // Only draw the light flare in high-res mode, never off-screen mode
   ri->systemState = ParticleRenderInst::AwaitingHighResDraw;

   ri->blendStyle = ParticleRenderInst::BlendGreyscale;

   ri->diffuseTex = &*(mFlareTexture);

   ri->softnessDistance = 1.0f; 

   // Sort by texture too.
   ri->defaultKey = ri->diffuseTex ? (U32)ri->diffuseTex : (U32)ri->vertBuff;

   renderManager->addInst( ri );
}
Ejemplo n.º 2
0
bool LightFlareData::_testVisibility(const SceneRenderState *state, LightFlareState *flareState, U32 *outVisDelta, F32 *outOcclusionFade, Point3F *outLightPosSS)
{
   // Reflections use the results from the last forward
   // render so we don't need multiple queries.
   if ( state->isReflectPass() )
   {
      *outOcclusionFade = flareState->occlusion;
      *outVisDelta = Sim::getCurrentTime() - flareState->visChangedTime;
      return flareState->visible;
   }

   // Initialize it to something first.
   *outOcclusionFade = 0;

   // First check to see if the flare point 
   // is on scren at all... if not then return
   // the last result.
   const Point3F &lightPos = flareState->lightMat.getPosition();  
   const RectI &viewport = GFX->getViewport();
   MatrixF projMatrix;
   state->getCameraFrustum().getProjectionMatrix(&projMatrix);
   if( state->isReflectPass() )
      projMatrix = state->getSceneManager()->getNonClipProjection();
   bool onScreen = MathUtils::mProjectWorldToScreen( lightPos, outLightPosSS, viewport, GFX->getWorldMatrix(), projMatrix );

   // It is onscreen, so raycast as a simple occlusion test.
   const LightInfo *lightInfo = flareState->lightInfo;
   const bool isVectorLight = lightInfo->getType() == LightInfo::Vector;

   const bool useOcclusionQuery = isVectorLight ? flareState->worldRadius > 0.0f : mOcclusionRadius > 0.0f;
   bool needsRaycast = true;

   // NOTE: if hardware does not support HOQ it will return NULL
   // and we will retry every time but there is not currently a good place
   // for one-shot initialization of LightFlareState
   if ( useOcclusionQuery )
   {
      // Always treat light as onscreen if using HOQ
      // it will be faded out if offscreen anyway.
      onScreen = true;
	  needsRaycast = false;

      // Test the hardware queries for rendered pixels.
      U32 pixels = 0, fullPixels = 0;
      GFXOcclusionQuery::OcclusionQueryStatus status;
      flareState->occlusionQuery.getLastStatus( false, &status, &pixels );      
      flareState->fullPixelQuery.getLastStatus( false, NULL, &fullPixels );
      
      if ( status == GFXOcclusionQuery::NotOccluded && fullPixels != 0 )
         *outOcclusionFade = mClampF( (F32)pixels / (F32)fullPixels, 0.0f, 1.0f );

        if( !flareState->occlusionQuery.isWaiting() )
        {
            // Setup the new queries.
            RenderPassManager *rpm = state->getRenderPass();
            OccluderRenderInst *ri = rpm->allocInst<OccluderRenderInst>();   
            ri->type = RenderPassManager::RIT_Occluder;
            ri->query = flareState->occlusionQuery.getQuery();
            ri->query2 = flareState->fullPixelQuery.getQuery();
            ri->isSphere = true;
            ri->position = lightPos;
            if ( isVectorLight && flareState->worldRadius > 0.0f )         
                ri->scale.set( flareState->worldRadius );
            else
                ri->scale.set( mOcclusionRadius );
            ri->orientation = rpm->allocUniqueXform( lightInfo->getTransform() );         
      
            // Submit the queries.
            state->getRenderPass()->addInst( ri );
        }
   }

   const Point3F &camPos = state->getCameraPosition();

   if ( needsRaycast )
   {
      // Use a raycast to determine occlusion.
      GameConnection *conn = GameConnection::getConnectionToServer();
      if ( !conn )
         return false;

      const bool fps = conn->isFirstPerson();
      GameBase *control = conn->getControlObject();
      if ( control && fps )
         control->disableCollision();

      RayInfo rayInfo;

      if ( !gClientContainer.castRay( camPos, lightPos, LosMask, &rayInfo ) )
         *outOcclusionFade = 1.0f;

      if ( control && fps )
         control->enableCollision();
   }

   // The raycast and hardware occlusion query only calculate if
   // the flare is on screen... if does not account for being 
   // partially offscreen.
   //
   // The code here clips a box against the viewport to 
   // get an approximate percentage of onscreen area.
   //
   F32 worldRadius = flareState->worldRadius > 0 ? flareState->worldRadius : mOcclusionRadius;
   if ( worldRadius > 0.0f )
   {
      F32 dist = ( camPos - lightPos ).len();
      F32 pixelRadius = state->projectRadius(dist, worldRadius);

      RectI visRect( outLightPosSS->x - pixelRadius, outLightPosSS->y - pixelRadius, 
                     pixelRadius * 2.0f, pixelRadius * 2.0f ); 
      F32 fullArea = visRect.area();

      if ( visRect.intersect( viewport ) )
      {
         F32 visArea = visRect.area();
         *outOcclusionFade *= visArea / fullArea;
         onScreen = true;
      }
      else
         *outOcclusionFade = 0.0f;
   }
   
   const bool lightVisible = onScreen && *outOcclusionFade > 0.0f;

   // To perform a fade in/out when we gain or lose visibility
   // we must update/store the visibility state and time.
   const U32 currentTime = Sim::getCurrentTime();
   if ( lightVisible != flareState->visible )
   {
      flareState->visible = lightVisible;
      flareState->visChangedTime = currentTime;
   }

   // Return the visibility delta for time fading.
   *outVisDelta = currentTime - flareState->visChangedTime;

   // Store the final occlusion fade so that it can
   // be used in reflection rendering later.
   flareState->occlusion = *outOcclusionFade;

   return lightVisible;
}
Ejemplo n.º 3
0
//----------------------------------------------------------------------------
/// Core rendering method for this control.
///
/// This method scans through all the current client ShapeBase objects.
/// If one is named, it displays the name and damage information for it.
///
/// Information is offset from the center of the object's bounding box,
/// unless the object is a PlayerObjectType, in which case the eye point
/// is used.
///
/// @param   updateRect   Extents of control.
void afxGuiTextHud::onRender( Point2I, const RectI &updateRect)
{
   // Background fill first
   if (mShowFill)
      GFX->getDrawUtil()->drawRectFill(updateRect, mFillColor.toColorI());

   // Must be in a TS Control
   GuiTSCtrl *parent = dynamic_cast<GuiTSCtrl*>(getParent());
   if (!parent) return;

   // Must have a connection and control object
   GameConnection* conn = GameConnection::getConnectionToServer();
   if (!conn)
      return;

   GameBase * control = dynamic_cast<GameBase*>(conn->getControlObject());
   if (!control)
      return;

   // Get control camera info
   MatrixF cam;
   Point3F camPos;
   VectorF camDir;
   conn->getControlCameraTransform(0,&cam);
   cam.getColumn(3, &camPos);
   cam.getColumn(1, &camDir);

   F32 camFovCos;
   conn->getControlCameraFov(&camFovCos);
   camFovCos = mCos(mDegToRad(camFovCos) / 2);

   // Visible distance info & name fading
   F32 visDistance = gClientSceneGraph->getVisibleDistance();
   F32 visDistanceSqr = visDistance * visDistance;
   F32 fadeDistance = visDistance * mDistanceFade;

   // Collision info. We're going to be running LOS tests and we
   // don't want to collide with the control object.
   static U32 losMask = TerrainObjectType | TerrainLikeObjectType | ShapeBaseObjectType;

   if (!mEnableControlObjectOcclusion)
      control->disableCollision();

   if (mLabelAllShapes)
   {
     // This section works just like GuiShapeNameHud and renders labels for
     // all the shapes.

     // All ghosted objects are added to the server connection group,
     // so we can find all the shape base objects by iterating through
     // our current connection.
     for (SimSetIterator itr(conn); *itr; ++itr) 
     {
       ///if ((*itr)->getTypeMask() & ShapeBaseObjectType) 
       ///{
       ShapeBase* shape = dynamic_cast<ShapeBase*>(*itr);
       if ( shape ) {
         if (shape != control && shape->getShapeName()) 
         {

           // Target pos to test, if it's a player run the LOS to his eye
           // point, otherwise we'll grab the generic box center.
           Point3F shapePos;
           if (shape->getTypeMask() & PlayerObjectType) 
           {
             MatrixF eye;

             // Use the render eye transform, otherwise we'll see jittering
             shape->getRenderEyeTransform(&eye);
             eye.getColumn(3, &shapePos);
           }
           else 
           {
             // Use the render transform instead of the box center
             // otherwise it'll jitter.
             MatrixF srtMat = shape->getRenderTransform();
             srtMat.getColumn(3, &shapePos);
           }

           VectorF shapeDir = shapePos - camPos;

           // Test to see if it's in range
           F32 shapeDist = shapeDir.lenSquared();
           if (shapeDist == 0 || shapeDist > visDistanceSqr)
             continue;
           shapeDist = mSqrt(shapeDist);

           // Test to see if it's within our viewcone, this test doesn't
           // actually match the viewport very well, should consider
           // projection and box test.
           shapeDir.normalize();
           F32 dot = mDot(shapeDir, camDir);
           if (dot < camFovCos)
             continue;

           // Test to see if it's behind something, and we want to
           // ignore anything it's mounted on when we run the LOS.
           RayInfo info;
           shape->disableCollision();
           SceneObject *mount = shape->getObjectMount();
           if (mount)
             mount->disableCollision();
           bool los = !gClientContainer.castRay(camPos, shapePos,losMask, &info);
           shape->enableCollision();
           if (mount)
             mount->enableCollision();

           if (!los)
             continue;

           // Project the shape pos into screen space and calculate
           // the distance opacity used to fade the labels into the
           // distance.
           Point3F projPnt;
           shapePos.z += mVerticalOffset;
           if (!parent->project(shapePos, &projPnt))
             continue;
           F32 opacity = (shapeDist < fadeDistance)? 1.0:
             1.0 - (shapeDist - fadeDistance) / (visDistance - fadeDistance);

           // Render the shape's name
           drawName(Point2I((S32)projPnt.x, (S32)projPnt.y),shape->getShapeName(),opacity);
         }
       }
     }
   }

   // This section renders all text added by afxGuiText effects.
   for (S32 i = 0; i < text_items.size(); i++)
   {
     HudTextSpec* spec = &text_items[i];
     if (spec->text && spec->text[0] != '\0') 
     {
       VectorF shapeDir = spec->pos - camPos;

       // do range test
       F32 shapeDist = shapeDir.lenSquared();
       if (shapeDist == 0 || shapeDist > visDistanceSqr)
         continue;
       shapeDist = mSqrt(shapeDist);

       // Test to see if it's within our viewcone, this test doesn't
       // actually match the viewport very well, should consider
       // projection and box test.
       shapeDir.normalize();
       F32 dot = mDot(shapeDir, camDir);
       if (dot < camFovCos)
         continue;

       // Test to see if it's behind something, and we want to
       // ignore anything it's mounted on when we run the LOS.
       RayInfo info;
       if (spec->obj)
         spec->obj->disableCollision();
       bool los = !gClientContainer.castRay(camPos, spec->pos, losMask, &info);
       if (spec->obj)
         spec->obj->enableCollision();
       if (!los)
         continue;

       // Project the shape pos into screen space.
       Point3F projPnt;
       if (!parent->project(spec->pos, &projPnt))
         continue;

       // Calculate the distance opacity used to fade text into the distance.
       F32 opacity = (shapeDist < fadeDistance)? 1.0 : 1.0 - (shapeDist - fadeDistance) / (25.0f);
       if (opacity > 0.01f)
        drawName(Point2I((S32)projPnt.x, (S32)projPnt.y), spec->text, opacity, &spec->text_clr);
     }
   }

   // Restore control object collision
   if (!mEnableControlObjectOcclusion)
      control->enableCollision();

   // Border last
   if (mShowFrame)
      GFX->getDrawUtil()->drawRect(updateRect, mFrameColor.toColorI());

   reset();
}