The "Ilo" open-source driver that provides unofficial Intel Gallium3D graphics support for Sandy Bridge and Ivy Bridge graphics cores on Linux now is advertising GLSL 1.40 compliance. The GL Shading Language update comes after landing UBO and TBO support.
Chia-I Wu, the principal developer behind this Intel Gallium3D driver that supports the second and third generations of Intel Core CPU graphics, made the commit
this morning to advertise GLSL 1.40 by default over GLSL 1.30 after having support for Uniform Buffer Objects and Texture Buffer Objects.
For those unfamiliar with this Gallium3D driver, read this article with benchmarks
cover the work of this LunarG developer. The driver was merged into mainline Mesa this year but isn't exposed by default.
GLSL 1.40 is the version of the GL Shading Language corresponding to the OpenGL 3.1 specification. Meanwhile, the upstream Intel i965 DRI driver has already supported GLSL 1.40 for some time.