https://www.khronos.org/news/press/khronos-releases-opengl-4.6-with-spir-v-support

Quote

OpenGL 4.6 adds the functionality of these ARB extensions to OpenGL’s core specification:

• GL_ARB_gl_spirv and GL_ARB_spirv_extensions to standardize SPIR-V support for OpenGL
• GL_ARB_indirect_parameters and GL_ARB_shader_draw_parameters for reducing the CPU overhead associated with rendering batches of geometry
• GL_ARB_pipeline_statistics_query and GL_ARB_transform_feedback_overflow_query standardize OpenGL support for features available in Direct3D
• GL_ARB_texture_filter_anisotropic (based on GL_EXT_texture_filter_anisotropic) brings previously IP encumbered functionality into OpenGL to improve the visual quality of textured scenes
• GL_ARB_polygon_offset_clamp (based on GL_EXT_polygon_offset_clamp) suppresses a common visual artifact known as a “light leak” associated with rendering shadows
• GL_ARB_shader_atomic_counter_ops and GL_ARB_shader_group_vote add shader intrinsics supported by all desktop vendors to improve functionality and performance
• GL_KHR_no_error reduces driver overhead by allowing the application to indicate that it expects error-free operation so errors need not be generated

In addition to the above features being added to OpenGL 4.6, the following are being released as extensions:

• GL_KHR_parallel_shader_compile allows applications to launch multiple shader compile threads to improve shader compile throughput
• WGL_ARB_create_context_no_error and GXL_ARB_create_context_no_error allow no error contexts to be created with WGL or GLX that support the GL_KHR_no_error extension

[...]

Sophisticated graphics applications will also benefit from a set of newly released extensions for both OpenGL and OpenGL ES to enable interoperability with Vulkan and Direct3D. These extensions are named:

• GL_EXT_memory_object
• GL_EXT_memory_object_fd
• GL_EXT_memory_object_win32
• GL_EXT_semaphore
• GL_EXT_semaphore_fd
• GL_EXT_semaphore_win32
• GL_EXT_win32_keyed_mutex