Thanks for answering
To see the latest changes in linux I've used Ubuntu by this PPA https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers
glxinfo in the terminal.
The problem is that the Windows driver has not updated 2014 year ago with new GL extension support but yes update for hasswell or newer CPu's driver.
This problem does not exist on Linux are updated with the exrtensiones supported by the hardware
most of the extension are hardware independent however there is a difference between the hardware's capability e.g all Intel hd could support openGL 4.5 and the drivers reported capabilities
if you made a petition lots would sign it e.g all intel GMA could have a wddm 1.3 driver made (nvidia made windows 10 driver for 8200m NVIDIA DRIVERS GeForce Windows 10 Driver a GPU made in 2006
it looks bad when the opensource developers have created a more conformant driver and better driver
do the results of the test differ from Linux and windows
It's understandable our older driver branch for Ivybridge isn't as well updated as the Linux drivers are. At a high level, there is typically a support cycle for hotfix and new feature updates to a given driver branch. Anything past the cycle is kept updated mainly with mission critical fixes. HSW is currently at the end of this cycle, Ivybridge is just outside it so these new extensions would not make it into the Ivybridge supported drivers. Linux is opensource, so it's constantly being worked on/improved and doesn't conform to the same cycles as Intel. Other vendors may also have differing support models as well. Hope this helps your understanding.
I don't think so two years are not many because NVIDIA offers 9 years of OpenGL support by updating the older DX10 than Ivy Bridge GPU.
If the hardware is simple update it supports not limit .So easy.
GL_ARB_explicit_uniform_location Shaders compilation fails on Intel drivers (missing 'GL_ARB_explicit_uniform_location' extension) · Issue #1222 · citra-…
PCSX2 Won't work ok GDSX OGL HW 4.0 + some extension crash under Windows Gsdx-ogl not compatible with Intel MS driver (glsl compilation error) · Issue #345 · PCSX2/pcsx2 · GitHub
Also the main problem GL_ARB_shader_image_load_store and GL_ARB_texture_barrier required by a lot aplications for now by Accuracy and blending unit .
So the only thing you gain is defragment the development and support to any developer and difficult debugging.
The only good under windows for ivy bridge for now have GLSL 4.0 compared mesa GLSL 3.0 compiler .
I totally get it Carlos26,
I intended to convey other vendors may offer different support cycles than we do. Not everyone can support products as long as all others, and some may have more value or cost attached to supporting it longer or shorter, only the vendors themselves know what that is and they do what they can or what makes sense for them.
I've sent your request for additional support up the chain; no promises, but they'll know at least a few people are asking for this.
I can offer that for the best experience with current OGL and OS options please consider upgrading your hardware to a more current family like Broadwell or Skylake.
Thanks for your input!