Bug#790114: higan Incorrectly Fails OpenGL Version Check with Mesa/Gallium3D

[Dan Letz]

Source: higan
Version: 094-5
Severity: important

When using higan with an OpenGL 3.3 capable Gallium3D driver, it fails the OpenGL version check introduced in check-opengl-version.patch.
When I build higan from the vanilla source, it runs fine with OpenGL backend.
I'm guessing the glVersion is returning the compatibility context version rather than the core one?

Graphics card on this system is a RadeonHD 4550, and another system with an 8400GS also has this issue when using nouveau.

-- glxinfo version strings:
OpenGL renderer string: Gallium 0.4 on AMD RV710
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.5.8
OpenGL core profile shading language version string: 3.30
....
OpenGL version string: 3.0 Mesa 10.5.8
OpenGL shading language version string: 1.30
OpenGL context flags: (none)


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.1.0-towo.1-siduction-amd64 (SMP w/3 CPU cores; PREEMPT)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)