OgreNext: Fix shaders compilation on d3d12 mesa driver (WSLg)

[traversaro]

🦟 Bug fix

Fixes part of gazebosim/gz-sim#920 and of #852 .

Summary

Old GPUs and systems with incomplete GL implementations like WSLg would trigger shader compiler errors for several reasons:

• because C++ saw that GL_ARB_shader_storage_buffer_object was supported but we didn't request it in the shader.
• because C++ required the use of GLSL 4.30 (not supported by d3d12 as of 2023/05), even if GLSL 4.20 plus some extensions would also work fine.

This was tested on both mesa 22.2.5 and 23.1.0 .

The fix is actually from @darksylinc, see OGRECave/ogre-next@5b6d444 and OGRECave/ogre-next@3d9d380 for the original commits.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #851 (f6ab5f8) into gz-rendering7 (ef4abec) will increase coverage by 0.00%.
The diff coverage is n/a.

❗ Current head f6ab5f8 differs from pull request most recent head 52f7af1. Consider uploading reports for the commit 52f7af1 to get more accurate results

@@              Coverage Diff               @@
##           gz-rendering7     #851   +/-   ##
==============================================
  Coverage          77.14%   77.14%           
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  Files                170      170           
  Lines              14716    14716           
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+ Hits               11352    11353    +1     
+ Misses              3364     3363    -1     

see 1 file with indirect coverage changes