[Mesa-users] GLSL 1.20 in OpenGL Core context

[Ruslan Kabatsayev]

Hello,

I've noticed that when I request OpenGL Core context, I still can use
(a limited version of) GLSL 1.20. Namely, my shader with the following
header works fine on Mesa DRI Intel(R) Haswell Desktop x86/MMX/SSE2 as
well as llvmpipe in Mesa 17:

#version 120
#extension GL_ARB_gpu_shader_fp64: enable

Is it a deliberate decision by Mesa? Can I rely on this being
supported in the future?

Regards,
Ruslan