3D accelerated OpenGL 1.5 occlusion query support missing

[Jonathan Liu]

Host: Windows 7 Ultimate 64-bit Guest: Windows XP Professional SP3 32-bit 3D acceleration: Enabled

The Windows XP guest reports the OpenGL version as "2.1 Chromium 1.9". However not all OpenGL features up until OpenGL 2.1 are supported. The following OpenGL 1.5 functions are missing: glBeginQuery, glDeleteQueries, glEndQuery, glGenQueries, glGetQueryObjectiv, glGetQueryObjectuiv, glGetQueryiv, glIsQuery. This means that OpenGL programs that expect full OpenGL 2.1 support may crash if it uses the OpenGL version string to determine whether or not it can use OpenGL 1.5 occlusion queries.

Attached is output from glewinfo which lists extensions that are present/missing.

[Jonathan Liu]

GLEW Extension Info

[magnesj]

Same happens for Win7 x64 host with Win7 x64 guest

[Jonathan Liu]

Still occurs in VirtualBox 4.0.4.

[Jonathan Liu]

Still occurs in VirtualBox 4.0.6.

[Craig Scott]

Any chance this ticket will get some attention soon? It is still not addressed in 4.1.2. I'm working on a project that does indeed fail because it expects full OpenGL 2.1 support and it verifies that what should be there is indeed available as part of its initialization. There's enough special case handling for Mesa bugs on linux without having to start adding things in for VirtualBox too (that starts getting too complicated and harder to maintain).

[Craig Scott]

It's also worth pointing out that according to the glew output in the original report, the equivalent ARB functions for the missing query functions are actually present, so this should really be a relatively simple deficiency to fix.

[Jonathan Liu]

Still occurs in VirtualBox 4.1.4.

[Giniu]

I can confirm it still occurs in VirtualBox 4.1.12, Linux host, Linux guest.

[misha]

This issue should be fixed with VBox 4.3 & 4.3 Additions.
I'm seeing glewinfo reports occlusion query as supported.
Could you give it a try and re-open if needed?