Cocos2d-x v3: ClippingNode does not work with RenderTexture

Question

If the ClippingNode is displayed in the RenderTexture, but not added as a child (or in my case added to the container, which itself is displayed in the RenderTexture), the effect is violated:

The sprite is not masked (the stencil has no effect), and the rest of the screen is filled with white color (in the case when the ClippingNode is added on top of all other layers).

(Tested on ios and win32)

auto stencil = DrawNode::create();
static Point triangle[3];
triangle[0] = Point(-40, -40);
triangle[1] = Point(40, -40);
triangle[2] = Point(0, 40);
static Color4F green(0, 1, 0, 1);
stencil->drawPolygon(triangle, 3, green, 0, green);

auto clipper = ClippingNode::create();
clipper->setAnchorPoint(Point(0.5, 0.5));
clipper->setPosition( Point(100, 100) );
clipper->setStencil(stencil);
clipper->setInverted(true);

// containerAddedAsChild->addChild(clipper, 20);      // this works fine
containerRenderedToTexture->addChild(clipper, 20);    // this breaks 

auto img = Sprite::create("test_sprite.png");
img->setAnchorPoint(Point(0.5, 0.5));
clipper->addChild(img);

How can I make ClippingNode work with RenderTexture with the given result (the result is obtained by adding ClippingNode as a child instead of using RenderTexture)? Thank.

Answer 1

, , , ClippingNodes RenderTexture, .

Cocos2d-x 3.x :

RenderTexture* renderTexture = RenderTexture::create(paddedSize.width, paddedSize.height,
    Texture2D::PixelFormat::RGBA8888,
    GL_DEPTH24_STENCIL8_OES); // configure for clipping node

renderTexture->beginWithClear(0, 0, 0, 0, 1.0f);
clippingNode->Node::visit();
renderTexture->end();

Cocos2d-iPhone/Swift 3.x :

CCRenderTexture *renderTexture = [CCRenderTexture renderTextureWithWidth:paddedSize.width height:paddedSize.height
    pixelFormat:CCTexturePixelFormat_RGBA8888
    depthStencilFormat:GL_DEPTH24_STENCIL8_OES];
[renderTexture beginWithClear:0.0f g:0.0f b:0.0f a:0.0f depth:1.0f];
[clippingNode visit];
[renderTexture end];