FP64 Support Finally Lands In Mesa Git For Intel Haswell

[RussianNeuroMancer]

Any ETA for IvyBridge?

[imirkin]

There's also image load store in the vec4 backend needed for GL 4.2. After that I think it can jump the rest of the way...

I don't think that's required. ARB_shader_image_load_store only requires frag (and with ARB_compute_shader, compute) support. Both of those are scalar, so you should be able to get GL 4.5 once the va64 bits have been worked out, if any. Everything else has already been fixed up for HSW (stencil texturing, qbo), although not yet for IVB, which will be stuck at GL 4.2 when the fp64 is done.

[suberimakuri]

Well done!

[starshipeleven]

Any ETA for IvyBridge?

This. Kayden plz

[quaz0r]

why is this such a huge deal that took a lifetime to complete support for? do these chips not actually support fp64 and needed to have a bunch of emulation code written for it or something?

[RussianNeuroMancer]

these chips not actually support fp64 and needed to have a bunch of emulation code written for it

Yep.limit

[AdamOne]

Yes, it took seven years for a processor that has only _ever_ been used at OGL 4 with proprietary code, to now have a publicy shared equal.
Theres a reason why public drivers take long to hit the market; the developers cant make money off the code. Its pretty basic.

Instead, if you realize the competitiveness this makes for Haswell drivers, it is huge! Microsoft can basically no longer claim sole capability.

Rejoice!

[starshipeleven]

Yes, it took seven years for a processor that has only _ever_ been used at OGL 4 with proprietary code, to now have a publicy shared equal.
Theres a reason why public drivers take long to hit the market; the developers cant make money off the code. Its pretty basic.

Instead, if you realize the competitiveness this makes for Haswell drivers, it is huge! Microsoft can basically no longer claim sole capability.

Rejoice!

Deliberately trolling hard or just heavy sarcasm.

[frosth]

If I understand this corectly ivy and hsw support fp64 but in very specific way. This is why we need wait for ages for it....
btw:

glxinfo | grep -i opengl
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Haswell Desktop 
OpenGL core profile version string: 3.3 (Core Profile) Mesa 13.1.0-devel (git-c4b87f129e)
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 13.1.0-devel (git-c4b87f129e)
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 13.1.0-devel (git-c4b87f129e)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10

so opengl 3.3 still, this is odd...

[LinAGKar]

Yep.limit

No, AFAIK Haswell and Ivy Bridge have hardware 64, but it takes some extra trickery to use it.