[mythtv-commits] [MythTV/mythtv] ce373b: configure: Link to either OpenGL or OpenGL ES - no...

[Mark Kendall]

  Branch: refs/heads/master
  Home:   https://github.com/MythTV/mythtv
  Commit: ce373bbd14ba6270dd6097ff072ad171ac2db871
      https://github.com/MythTV/mythtv/commit/ce373bbd14ba6270dd6097ff072ad171ac2db871
  Author: Mark Kendall <mark.kendall at gmail.com>
  Date:   2020-02-03 (Mon, 03 Feb 2020)

  Changed paths:
    M mythtv/configure
    M mythtv/libs/libmythtv/libmythtv.pro
    M mythtv/libs/libmythui/libmythui.pro
    M mythtv/settings.pro

  Log Message:
  -----------
  configure: Link to either OpenGL or OpenGL ES - not both

- linking to both libraries causes unexpected behaviour on some legacy
drivers - notably nvidia (and maybe some Intel mesa) - leading to either
a hard crash at startup or falling back to llvm pipe (software
rendering)
- it also appears to impact behaviour of EGL DMABUF support on the Pi4 -
which needs an additional fix following this change
- we default to OpenGL and check whether Qt was compiled for GLES2 - and
if so only search for GLES2.
- in case Qt support is misdetected an additional configure option is
added to force OpenGL ES
- note however that this is ONLY intended as a workaround for
misdetection - Qt will still load the version of OpenGL it was compiled
for. Linking to GLES is not required to actually use GLES on desktop
platforms (this can be enabled with 'MYTHTV_NO_EGL=1
MYTHTV_OPENGL_ES=1')
- refs #13538