Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. How to make opengl offscreen renderer
Qt 6.11 is out! See what's new in the release blog

How to make opengl offscreen renderer

Scheduled Pinned Locked Moved Unsolved General and Desktop
2 Posts 2 Posters 706 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • Roy44R Offline
    Roy44R Offline
    Roy44
    wrote on last edited by
    #1

    Hi,
    I would like to generate pixmap from opengl offscreen renderer.
    An extenal library do the rendering; I have modified this library to use QOpenGLContext.
    So it works for rendering in QOpenGLWidget.
    My purpose is to generate pixmap from opengl rendering offscreen to make icons
    in combobox.

    Thanks,

    ? 1 Reply Last reply
    0
    • Roy44R Roy44

      Hi,
      I would like to generate pixmap from opengl offscreen renderer.
      An extenal library do the rendering; I have modified this library to use QOpenGLContext.
      So it works for rendering in QOpenGLWidget.
      My purpose is to generate pixmap from opengl rendering offscreen to make icons
      in combobox.

      Thanks,

      ? Offline
      ? Offline
      A Former User
      wrote on last edited by A Former User
      #2

      @Roy44 Hi! As a first read I recommend the documentation page for QOffscreenSurface Class and then the Rendering FBOs in a Thread example. Good luck :-)

      1 Reply Last reply
      1

      • Login

      • Login or register to search.
      • First post
        Last post
      0
      • Categories
      • Recent
      • Tags
      • Popular
      • Users
      • Groups
      • Search
      • Get Qt Extensions
      • Unsolved