Update gl support test to use glmark2 (New)

[tomli380576]

Resolved issues

This PR updates the 1_gl_support_* cases from unity_support_test to glmark2 since the former has not been updated for almost 10 years. This new test uses almost exactly the same logic as reboot_check_test #1677 except that it just throws exceptions to fail early instead of trying to catch them.

Documentation

We are checking 2 things in this test:

1. Is OpenGL version (from GL_VERSION) newer than 3.0? This requirement comes from gnome and GTK. Note that this is not true for GTK4, which requires OpenGL 4.6 / OpenGL ES 3.1 if using the GSK_RENDERER=ngl backend or vulkan 1.x for GSK_RENDERER=vulkan or unset according to GNOME
2. Is the DUT using a hardware renderer? This part is the same as reboot_check_test.py -g except that it exits as soon as something goes wrong

A new cli option has been added:
--glmark2-override: manually select the glmark2 binary to run. Caller is responsible for checking whether this binary exists.

Tests

Unit tests
https://certification.canonical.com/hardware/202411-36032/submission/445444/

[codecov]

Codecov Report

❌ Patch coverage is 93.33333% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.56%. Comparing base (e3775c5) to head (eab56d8).
⚠️ Report is 96 commits behind head on main.

Files with missing lines	Patch %	Lines
providers/base/bin/gl_support.py	93.33%	2 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2087      +/-   ##
==========================================
+ Coverage   52.01%   52.56%   +0.55%     
==========================================
  Files         388      393       +5     
  Lines       41794    42680     +886     
  Branches     7771     7991     +220     
==========================================
+ Hits        21738    22436     +698     
- Misses      19282    19441     +159     
- Partials      774      803      +29     

Flag	Coverage Δ
checkbox-ng	70.76% <ø> (-0.15%)	⬇️
checkbox-support	64.93% <ø> (-0.14%)	⬇️
provider-base	30.88% <93.33%> (+2.85%)	⬆️
provider-certification-client	57.14% <ø> (ø)
provider-certification-server	57.14% <ø> (ø)
provider-genio	96.90% <ø> (ø)
provider-gpgpu	93.06% <ø> (ø)
provider-iiotg	100.00% <ø> (ø)
provider-resource	39.38% <ø> (ø)
provider-sru	97.97% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[rickwu666666]

I've tried with my project which is using mali GPU, and the change works perfectly.
https://certification.canonical.com/hardware/202507-36924/submission/451589/test-results/pass/

[fernando79513]

Good work here, and sorry for being so slow reviewing this.
I've added a couple of comments. Maybe we can reuse some code to get rid of get_desktop_environment_variables

[Copilot]

Pull Request Overview

This PR modernizes the OpenGL support testing by replacing the deprecated unity_support_test (unmaintained for ~10 years) with glmark2. The update validates two key requirements: OpenGL version >= 3.0 (per GNOME/GTK standards) and hardware renderer usage.

Key Changes

• Replaced GLSupport class with GLSupportTester that uses glmark2 instead of unity_support_test
• Added CLI option --glmark2-override to manually select glmark2 binary
• Implemented comprehensive unit tests covering various scenarios (hardware/software renderers, version checks, session types)

Reviewed Changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
providers/base/bin/gl_support.py	Complete rewrite to use glmark2 for OpenGL validation with desktop environment detection and symlink handling for snap containers
providers/base/tests/test_gl_support.py	Comprehensive test suite covering happy paths, error conditions, and edge cases for the new glmark2-based implementation
providers/base/tests/test_data/glmark2_ok.txt	Test data for successful OpenGL 4.6 validation
providers/base/tests/test_data/glmark2_es2_ok.txt	Test data for successful OpenGL ES 3.2 validation
providers/base/tests/test_data/glmark2_llvmpipe.txt	Test data for software renderer (llvmpipe) detection
providers/base/tests/test_data/glmark2_es2_llvmpipe.txt	Test data for OpenGL ES software renderer detection
providers/base/tests/test_data/glmark2_version_too_old.txt	Test data for OpenGL version below minimum requirement
providers/base/tests/test_data/gl_support_succ.txt	Removed obsolete unity_support_test success output
providers/base/tests/test_data/gl_support_succ_changed.txt	Removed obsolete unity_support_test processed output
providers/base/tests/test_data/gl_support_fail.txt	Removed obsolete unity_support_test failure output
providers/base/tests/test_data/gl_support_fail_changed.txt	Removed obsolete unity_support_test processed output

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.