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  1. Qt
  2. QTBUG-125121

Add support for order-independent transparency

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    • Suggestion
    • Resolution: Unresolved
    • P2: Important
    • None
    • None
    • Quick: 3D
    • None
    • 2c035073d (dev), 23bc8da4d (dev), d4654a75c (dev), 79da7a082 (dev), 47d3cb47a (dev), 53cb6fe94 (dev), 75796aaf6 (dev), cbc1cc8c9 (dev), 7f361b20a (dev), de4bde0fb (dev), d2fe6619c (dev), e1a86305b (dev), 7d796a391 (6.9)

    Description

      The current transparency implementation results in some problems when trying to render semi-transparent surfaces with QtGraphs Surface3D.

      Some of the issues can be seen in the following videos:
      https://qtcompany-my.sharepoint.com/:v:/g/personal/sakaria_pouke_qt_io/EVVP_ys6PzpFux3npEDYLJIBIZut4v1uNp9HigShbpgYWA?e=Ytc6wr
      https://qtcompany-my.sharepoint.com/:v:/g/personal/sakaria_pouke_qt_io/EfUlvBKe8j1Cnxm7J6D6yX8Bgh-HVObaMs737HKmgjjOyw?e=uCIevc

      Some techniques for doing this can be found here: https://on-demand.gputechconf.com/gtc/2014/presentations/S4385-order-independent-transparency-opengl.pdf

      And here's a vulkan implementation of one: https://github.com/nvpro-samples/vk_order_independent_transparency

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          depends on

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-131336 Hardcoded shader version prevent creating higher level shaders with MULTIVIEW

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-131505 Unable to create multisampled depth-only pipeline

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Task - A task that needs to be done. QTBUG-130332 Add UAV's for fragment stage for DX11

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Task - A task that needs to be done. QTBUG-130334 Support per render target blending for OpenGL

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          mentioned in

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          For Gerrit Dashboard: QTBUG-125121
          # Subject Branch Project Status CR V
          574826,4 Implement linked list oit method dev qt/qtquick3d Status: NEW 0 0
          574827,5 Add Order independent transparency API dev qt/qtquick3d Status: NEW 0 0
          574831,6 Add memoryBarrier command dev qt/qtbase Status: NEW 0 0
          574833,6 Fix image binding point sanity check dev qt/qtbase Status: NEW 0 0
          590422,3 Add interlock oit method dev qt/qtquick3d Status: NEW 0 0
          590423,5 Add feature for shader invocation interlock dev qt/qtbase Status: NEW 0 0
          594517,2 Implement simple list oit method dev qt/qtquick3d Status: NEW 0 0
          594519,2 Implement spinlock oit method dev qt/qtquick3d Status: NEW 0 0
          604498,1 Implement image binding support dev qt/qtquick3d Status: NEW 0 0
          604539,1 Implement image clearing dev qt/qtquick3d Status: NEW 0 0
          604540,1 Add OIT Api part 2 dev qt/qtquick3d Status: NEW 0 0

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              anmaatta Antti Määttä
              tokorpip Tomi Korpipää
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              Dates

                Created:
                Updated: