public override void render(AsRenderSupport support, float parentAlpha)
        {
            float  alpha       = parentAlpha * this.getAlpha();
            int    numChildren = (int)(mChildren.getLength());
            String blendMode   = support.getBlendMode();
            int    i           = 0;

            for (; i < numChildren; ++i)
            {
                AsDisplayObject child = mChildren[i];
                if (child.getHasVisibleArea())
                {
                    AsFragmentFilter filter = child.getFilter();
                    support.pushMatrix();
                    support.transformMatrix(child);
                    support.setBlendMode(child.getBlendMode());
                    if (filter != null)
                    {
                        filter.render(child, support, alpha);
                    }
                    else
                    {
                        child.render(support, alpha);
                    }
                    support.setBlendMode(blendMode);
                    support.popMatrix();
                }
            }
        }
 private static int compileObject(AsDisplayObject _object, AsVector<AsQuadBatch> quadBatches, int quadBatchID, AsMatrix transformationMatrix, float alpha, String blendMode, bool ignoreCurrentFilter)
 {
     int i = 0;
     AsQuadBatch quadBatch = null;
     bool isRootObject = false;
     float objectAlpha = _object.getAlpha();
     AsDisplayObjectContainer container = _object as AsDisplayObjectContainer;
     AsQuad quad = _object as AsQuad;
     AsQuadBatch batch = _object as AsQuadBatch;
     AsFragmentFilter filter = _object.getFilter();
     if(quadBatchID == -1)
     {
         isRootObject = true;
         quadBatchID = 0;
         objectAlpha = 1.0f;
         blendMode = _object.getBlendMode();
         if(quadBatches.getLength() == 0)
         {
             quadBatches.push(new AsQuadBatch());
         }
         else
         {
             quadBatches[0].reset();
         }
     }
     if(filter != null && !ignoreCurrentFilter)
     {
         if(filter.getMode() == AsFragmentFilterMode.ABOVE)
         {
             quadBatchID = compileObject(_object, quadBatches, quadBatchID, transformationMatrix, alpha, blendMode, true);
         }
         quadBatchID = compileObject(filter.compile(_object), quadBatches, quadBatchID, transformationMatrix, alpha, blendMode);
         if(filter.getMode() == AsFragmentFilterMode.BELOW)
         {
             quadBatchID = compileObject(_object, quadBatches, quadBatchID, transformationMatrix, alpha, blendMode, true);
         }
     }
     else
     {
         if(container != null)
         {
             int numChildren = container.getNumChildren();
             AsMatrix childMatrix = new AsMatrix();
             for (i = 0; i < numChildren; ++i)
             {
                 AsDisplayObject child = container.getChildAt(i);
                 bool childVisible = child.getAlpha() != 0.0f && child.getVisible() && child.getScaleX() != 0.0f && child.getScaleY() != 0.0f;
                 if(childVisible)
                 {
                     String childBlendMode = child.getBlendMode() == AsBlendMode.AUTO ? blendMode : child.getBlendMode();
                     childMatrix.copyFrom(transformationMatrix);
                     AsRenderSupport.transformMatrixForObject(childMatrix, child);
                     quadBatchID = compileObject(child, quadBatches, quadBatchID, childMatrix, alpha * objectAlpha, childBlendMode);
                 }
             }
         }
         else
         {
             if(quad != null || batch != null)
             {
                 AsTexture texture = null;
                 String smoothing = null;
                 bool tinted = false;
                 int numQuads = 0;
                 if(quad != null)
                 {
                     AsImage image = quad as AsImage;
                     texture = image != null ? image.getTexture() : null;
                     smoothing = image != null ? image.getSmoothing() : null;
                     tinted = quad.getTinted();
                     numQuads = 1;
                 }
                 else
                 {
                     texture = batch.mTexture;
                     smoothing = batch.mSmoothing;
                     tinted = batch.mTinted;
                     numQuads = batch.mNumQuads;
                 }
                 quadBatch = quadBatches[quadBatchID];
                 if(quadBatch.isStateChange(tinted, alpha * objectAlpha, texture, smoothing, blendMode, numQuads))
                 {
                     quadBatchID++;
                     if(quadBatches.getLength() <= quadBatchID)
                     {
                         quadBatches.push(new AsQuadBatch());
                     }
                     quadBatch = quadBatches[quadBatchID];
                     quadBatch.reset();
                 }
                 if(quad != null)
                 {
                     quadBatch.addQuad(quad, alpha, texture, smoothing, transformationMatrix, blendMode);
                 }
                 else
                 {
                     quadBatch.addQuadBatch(batch, alpha, transformationMatrix, blendMode);
                 }
             }
             else
             {
                 throw new AsError("Unsupported display object: " + AsGlobal.getQualifiedClassName(_object));
             }
         }
     }
     if(isRootObject)
     {
         for (i = (int)(quadBatches.getLength() - 1); i > quadBatchID; --i)
         {
             quadBatches.pop().dispose();
         }
     }
     return quadBatchID;
 }
        private static int compileObject(AsDisplayObject _object, AsVector <AsQuadBatch> quadBatches, int quadBatchID, AsMatrix transformationMatrix, float alpha, String blendMode, bool ignoreCurrentFilter)
        {
            int         i                      = 0;
            AsQuadBatch quadBatch              = null;
            bool        isRootObject           = false;
            float       objectAlpha            = _object.getAlpha();
            AsDisplayObjectContainer container = _object as AsDisplayObjectContainer;
            AsQuad           quad              = _object as AsQuad;
            AsQuadBatch      batch             = _object as AsQuadBatch;
            AsFragmentFilter filter            = _object.getFilter();

            if (quadBatchID == -1)
            {
                isRootObject = true;
                quadBatchID  = 0;
                objectAlpha  = 1.0f;
                blendMode    = _object.getBlendMode();
                if (quadBatches.getLength() == 0)
                {
                    quadBatches.push(new AsQuadBatch());
                }
                else
                {
                    quadBatches[0].reset();
                }
            }
            if (filter != null && !ignoreCurrentFilter)
            {
                if (filter.getMode() == AsFragmentFilterMode.ABOVE)
                {
                    quadBatchID = compileObject(_object, quadBatches, quadBatchID, transformationMatrix, alpha, blendMode, true);
                }
                quadBatchID = compileObject(filter.compile(_object), quadBatches, quadBatchID, transformationMatrix, alpha, blendMode);
                if (filter.getMode() == AsFragmentFilterMode.BELOW)
                {
                    quadBatchID = compileObject(_object, quadBatches, quadBatchID, transformationMatrix, alpha, blendMode, true);
                }
            }
            else
            {
                if (container != null)
                {
                    int      numChildren = container.getNumChildren();
                    AsMatrix childMatrix = new AsMatrix();
                    for (i = 0; i < numChildren; ++i)
                    {
                        AsDisplayObject child        = container.getChildAt(i);
                        bool            childVisible = child.getAlpha() != 0.0f && child.getVisible() && child.getScaleX() != 0.0f && child.getScaleY() != 0.0f;
                        if (childVisible)
                        {
                            String childBlendMode = child.getBlendMode() == AsBlendMode.AUTO ? blendMode : child.getBlendMode();
                            childMatrix.copyFrom(transformationMatrix);
                            AsRenderSupport.transformMatrixForObject(childMatrix, child);
                            quadBatchID = compileObject(child, quadBatches, quadBatchID, childMatrix, alpha * objectAlpha, childBlendMode);
                        }
                    }
                }
                else
                {
                    if (quad != null || batch != null)
                    {
                        AsTexture texture   = null;
                        String    smoothing = null;
                        bool      tinted    = false;
                        int       numQuads  = 0;
                        if (quad != null)
                        {
                            AsImage image = quad as AsImage;
                            texture = image != null?image.getTexture() : null;

                            smoothing = image != null?image.getSmoothing() : null;

                            tinted   = quad.getTinted();
                            numQuads = 1;
                        }
                        else
                        {
                            texture   = batch.mTexture;
                            smoothing = batch.mSmoothing;
                            tinted    = batch.mTinted;
                            numQuads  = batch.mNumQuads;
                        }
                        quadBatch = quadBatches[quadBatchID];
                        if (quadBatch.isStateChange(tinted, alpha * objectAlpha, texture, smoothing, blendMode, numQuads))
                        {
                            quadBatchID++;
                            if (quadBatches.getLength() <= quadBatchID)
                            {
                                quadBatches.push(new AsQuadBatch());
                            }
                            quadBatch = quadBatches[quadBatchID];
                            quadBatch.reset();
                        }
                        if (quad != null)
                        {
                            quadBatch.addQuad(quad, alpha, texture, smoothing, transformationMatrix, blendMode);
                        }
                        else
                        {
                            quadBatch.addQuadBatch(batch, alpha, transformationMatrix, blendMode);
                        }
                    }
                    else
                    {
                        throw new AsError("Unsupported display object: " + AsGlobal.getQualifiedClassName(_object));
                    }
                }
            }
            if (isRootObject)
            {
                for (i = (int)(quadBatches.getLength() - 1); i > quadBatchID; --i)
                {
                    quadBatches.pop().dispose();
                }
            }
            return(quadBatchID);
        }
 private AsQuadBatch renderPasses(AsDisplayObject _object, AsRenderSupport support, float parentAlpha, bool intoCache)
 {
     AsTexture cacheTexture = null;
     AsStage stage = _object.getStage();
     AsContext3D context = AsStarling.getContext();
     float scale = AsStarling.getCurrent().getContentScaleFactor();
     if(stage == null)
     {
         throw new AsError("Filtered object must be on the stage.");
     }
     if(context == null)
     {
         throw new AsMissingContextError();
     }
     support.finishQuadBatch();
     support.raiseDrawCount((uint)(mNumPasses));
     support.pushMatrix();
     support.setBlendMode(AsBlendMode.NORMAL);
     AsRenderSupport.setBlendFactors(PMA);
     mProjMatrix.copyFrom(support.getProjectionMatrix());
     AsTexture previousRenderTarget = support.getRenderTarget();
     if(previousRenderTarget != null)
     {
         throw new AsIllegalOperationError("It's currently not possible to stack filters! " + "This limitation will be removed in a future Stage3D version.");
     }
     calculateBounds(_object, stage, sBounds);
     updateBuffers(context, sBounds);
     updatePassTextures((int)(sBounds.width), (int)(sBounds.height), mResolution * scale);
     if(intoCache)
     {
         cacheTexture = AsTexture.empty((int)(sBounds.width), (int)(sBounds.height), PMA, true, mResolution * scale);
     }
     support.setRenderTarget(mPassTextures[0]);
     support.clear();
     support.setOrthographicProjection(sBounds.x, sBounds.y, sBounds.width, sBounds.height);
     _object.render(support, parentAlpha);
     support.finishQuadBatch();
     AsRenderSupport.setBlendFactors(PMA);
     support.loadIdentity();
     context.setVertexBufferAt(0, mVertexBuffer, AsVertexData.POSITION_OFFSET, AsContext3DVertexBufferFormat.FLOAT_2);
     context.setVertexBufferAt(1, mVertexBuffer, AsVertexData.TEXCOORD_OFFSET, AsContext3DVertexBufferFormat.FLOAT_2);
     int i = 0;
     for (; i < mNumPasses; ++i)
     {
         if(i < mNumPasses - 1)
         {
             support.setRenderTarget(getPassTexture(i + 1));
             support.clear();
         }
         else
         {
             if(intoCache)
             {
                 support.setRenderTarget(cacheTexture);
                 support.clear();
             }
             else
             {
                 support.setRenderTarget(previousRenderTarget);
                 support.getProjectionMatrix().copyFrom(mProjMatrix);
                 support.translateMatrix(mOffsetX, mOffsetY);
                 support.setBlendMode(_object.getBlendMode());
                 support.applyBlendMode(PMA);
             }
         }
         AsTexture passTexture = getPassTexture(i);
         context.setProgramConstantsFromMatrix(AsContext3DProgramType.VERTEX, 0, support.getMvpMatrix3D(), true);
         context.setTextureAt(0, passTexture.get_base());
         activate(i, context, passTexture);
         context.drawTriangles(mIndexBuffer, 0, 2);
         deactivate(i, context, passTexture);
     }
     context.setVertexBufferAt(0, null);
     context.setVertexBufferAt(1, null);
     context.setTextureAt(0, null);
     support.popMatrix();
     if(intoCache)
     {
         support.setRenderTarget(previousRenderTarget);
         support.getProjectionMatrix().copyFrom(mProjMatrix);
         AsQuadBatch quadBatch = new AsQuadBatch();
         AsImage image = new AsImage(cacheTexture);
         stage.getTransformationMatrix(_object, sTransformationMatrix);
         AsMatrixUtil.prependTranslation(sTransformationMatrix, sBounds.x + mOffsetX, sBounds.y + mOffsetY);
         quadBatch.addImage(image, 1.0f, sTransformationMatrix);
         return quadBatch;
     }
     else
     {
         return null;
     }
 }