GL_ARB_gl_spirv on i965, iris.
GL_ARB_spirv_extensions on i965, iris.
GL_EXT_demote_to_helper_invocation on iris, i965.
OpenGL 4.6 on i965, iris.
VK_KHR_shader_clock on Intel, RADV.
VK_KHR_shader_float_controls on Intel.
VK_EXT_shader_subgroup_ballot on Intel.
VK_EXT_shader_subgroup_vote on Intel.