Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-56798

[REG 5.6.2->5.7] MacOS: QOpenGLFunctions uses glClearDepthf instead of glClearDepth in legacy contexts (GL 2.1)

    XMLWordPrintable

Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.9.0 Alpha
    • 5.7.0, 5.7.1, 5.8.0 Alpha
    • GUI: OpenGL
    • None
    • Tested on:
      - macOS 12.1 in VMware, Apple Software Renderer
      - macOS 12.1 on MacBook 2016 Core m7 1.3, Intel HD Graphics 515
    • macOS

    Description

      When used with a legacy OpenGL 2.1 context on MacOS, QOpenGLFunctions::glClearDepthf seems to use glClearDepthf(GLfloat) even though it is not defined in this version, causing an GL_INVALID_OPERATION OpenGL error when called. Versions prior to Qt 5.7 correctly use glClearDepth(GLdouble) as fallback instead.

      On Windows/Linux this seems to work correctly, but I get a 4.1 compatibility context there when I ask for 2.1, so I am not 100% sure it is not an issue there.

      Example program attached.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-57490 GL_INVALID_OPERATION in QSGNode dtor on macOS

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-54612 OpenGL error on MacOSX with Qt5.7

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          For Gerrit Dashboard: QTBUG-56798
          # Subject Branch Project Status CR V
          179218,3 Make sure we call glClearDepth(double) on desktop GL 5.8 qt/qtbase Status: MERGED +2 0

          Activity

            People

              sletta Gunnar Sletta
              fschauk Florian Schaukowitsch
              Votes:
              5 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Gerrit Reviews

                  There are no open Gerrit changes