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  1. Qt
  2. QTBUG-109041

Qt3DRender::QLayerFilter doesn't work with RHI

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 6.4.0
    • Qt3D
    • None
    • Linux/X11

    Description

      I have three layers in my project, fore-, middle- and background with different entities in it. The framegraph looks like this:

      Qt3DExtras::QForwardRenderer::
  Qt3DRender::QRenderSurfaceSelector::
    Qt3DRender::QViewport::
      Qt3DRender::QCameraSelector::
        Qt3DRender::QClearBuffers:: (AllBuffers)
          Qt3DRender::QNoDraw::
        Qt3DRender::QFrustumCulling::
          Qt3DRender::QClearBuffers:: (DepthStencilBuffer)
            Qt3DRender::QLayerFilter:: (DiscardAnyMatchingLayers)
          Qt3DRender::QClearBuffers:: (DepthStencilBuffer)
            Qt3DRender::QLayerFilter:: (DiscardAnyMatchingLayers)
          Qt3DRender::QClearBuffers:: (DepthStencilBuffer)
            Qt3DRender::QLayerFilter:: (DiscardAnyMatchingLayers)
              Qt3DRender::QDebugOverlay::

      Now the bug: the application works as expected when started with 

      QT3D_RENDERER=opengl

      When started without, so RHI is used by qt3d, the entities get rendered all at once and the layers don't work.

      I distilled this down to a minimal example:

      https://github.com/eringerli/basicshapes-cpp-with-layers

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            seanharmer Sean Harmer
            eringerli Christian Riggenbach
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              Created:
              Updated:

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