OpenGL CTS 4.2.6.1

OpenGL CTS 4.6.2.1

Fixes:

• Fix layer indices for cube map array textures
• Fixes arrays of arrays tests
• fix fp64 dvec fmod precision strictness
• Fix GS atomics for gl4 buffer storage tests
• Fix deinit of gl sparse buffer test
• Skip verification of 0-bit piplineStatistics queries
• Improve sparse texture failure errors
• stop crashing in gl tess isolines tests if xfb is broken
• Fix pass condition for atomic usage tests
• Fix missing memory barrier when testing MS images
• further improve sparse texture shader typing
• Fix ARB_sparse_texture commit tests texture allocation
• Fix texture target for verifying sparse data
• fix GL46 vector construction sizing
• Skip mipmap generation for integer sparse texture formats
• fix GL sparse texture gather offset constness
• Filter out invalid formats for sparse buffer texture queries
• Allow for KHR robust buffer access behavior
• Fix of missing processEvent call
• fix invalid buffer bind size in KHR-GL46.sparse_buffer_tests.BufferStorageTest
• Rework sparse texture shader typing
• Fix sampler format mismatch in verifying results
• Set NEAREST filtering for sparse clamp lookup texture

Improvements:

• Fix build in C++20 mode.
• Fixes zlib dependency
• Update KC CTS