Ivy Bridge Patches For OpenGL 4.0 In Mesa Updated

[mulenmar]

Given that my laptop has Bay Trail graphics (the mobile version of Ivy Bridge, I think), hopefully this'll make its way into Arch soon. I don't do [testing], especially not for drivers!

[dungeon]

In general you are right. But this days, when compositors require OGL2/GLES as minimum level, I think faking OGL2 or GLES2 for such old hardware is not such a big deal. It's allow people to run modern software after all.

Depends again which compositor, AFAIK compton does not require GL2 But really faking things just give people false hope - as old can't be modern It should be maded clear to those users that they use partially broken and unsupported really stuff and there is no better way for doing that other then to just not advertise what is not really supported.

I for example support AMD drop their blob drivers for older hardware, again for that reason to not give people false hope... Not on Linux only of course - if you know, you should know, but we should even make it clear, etc... how Windows 10 is DX 12 thingy, so only that hardware have chance to fully work.

Of course as i said i am not against to make it easy for user to force something not really supported, but i also like to make it clear how they are on their own there.

[RussianNeuroMancer]

Depends again which compositor, AFAIK compton does not require GL2

Mutter and KWin do require AFAIK (KWin also can run with disabled compositing, I not sure about Mutter).

But really faking things just give people false hope - as old can't be modern

IMO it's only matter of "if it allow to run Gnome 3 or Plasma 5", that it.

And since we are talking about IvyBridge here I remembered one thing that could be interesting for you. With disabled Gnome Software and Gnome Tracker autostart, Gnome 3 take just less than 0.3 GB at launch (KDE 5 without Akonadi and Baloo use 0.3 GB too) so it actually can replace Windows on tablets with 1 GB RAM (like this Dell tablet, this HP tablet, or this cheap tablet; all this tablets have BayTrail SoC with IvyBridge iGPU, that why I remembered about it) quite nicely, because Windows 10 take 0.7 GB at launch, around 0.1 GB taken by iGPU, so there is not much left for web-browser (I don't remember Windows 8.1 Update 1 numbers, but they are bigger than Gnome 3 for sure, and nobody cares about Win8 this days anyway). With Gnome 3 such tablets actually became useful piece of hardware.

As for old desktops/laptops/netbooks - some people just don't bother to check it, and slap Xubuntu/Lubuntu as default solution for old computers (with is, in my opinion, awful, because usability s obviously worse) while most of this tech is perfectly capable of running modern DEs, thanks for Intel's faked OGL2 and option to remove not necessary stuff from autostart (And with upgraded RAM you don't need to disable autostart of some apps.)

I for example support AMD drop their blob drivers for older hardware, again for that reason to not give people false hope... Not on Linux only of course - if you know, you should know, but we should even make it clear, etc... how Windows 10 is DX 12 thingy, so only that hardware have chance to fully work. Of course as i said i am not against to make it easy for user to force something not really supported, but i also like to make it clear how they are on their own there.

Oh, about false hopes, I will check out how new GIMP with enabled OpenCL processing will run on IvyBridge iGPU of my ThinkPad Helix 1gen.

 Platform Name                                   Intel Gen OCL Driver
Number of devices                                 1
 Device Name                                     Intel(R) HD Graphics IvyBridge M GT2
 Device Vendor                                   Intel
 Device Vendor ID                                0x8086
 Device Version                                  OpenCL 1.2 beignet 1.1.2
 Driver Version                                  1.1.2
 Device OpenCL C Version                         OpenCL C 1.2 beignet 1.1.2
 Device Type                                     GPU
 Device Profile                                  FULL_PROFILE
 Max compute units                               16
 Max clock frequency                             1000MHz
 Device Partition                                (core)
   Max number of sub-devices                     1
   Supported partition types                     None, None, None
 Max work item dimensions                        3
 Max work item sizes                             512x512x512
 Max work group size                             512
 Preferred work group size multiple              16
 Preferred / native vector sizes                  
   char                                                16 / 8        
   short                                                8 / 8        
   int                                                  4 / 4        
   long                                                 2 / 2        
   half                                                 0 / 8        (n/a)
   float                                                4 / 4        
   double                                               0 / 2        (n/a)
 Half-precision Floating-point support           (n/a)
 Single-precision Floating-point support         (core)
   Denormals                                     No
   Infinity and NANs                             Yes
   Round to nearest                              Yes
   Round to zero                                 No
   Round to infinity                             No
   IEEE754-2008 fused multiply-add               No
   Support is emulated in software               No
   Correctly-rounded divide and sqrt operations  No
 Double-precision Floating-point support         (n/a)
 Address bits                                    32, Little-Endian
 Global memory size                              2147483648 (2GiB)
 Error Correction support                        No
 Max memory allocation                           1073741824 (1024MiB)
 Unified memory for Host and Device              Yes
 Minimum alignment for any data type             128 bytes
 Alignment of base address                       1024 bits (128 bytes)
 Global Memory cache type                        Read/Write
 Global Memory cache size                        8192
 Global Memory cache line                        64 bytes
 Image support                                   Yes
   Max number of samplers per kernel             16
   Max size for 1D images from buffer            65536 pixels
   Max 1D or 2D image array size                 2048 images
   Max 2D image size                             8192x8192 pixels
   Max 3D image size                             8192x8192x2048 pixels
   Max number of read image args                 128
   Max number of write image args                8
 Local memory type                               Global
 Local memory size                               65536 (64KiB)
 Max constant buffer size                        134217728 (128MiB)
 Max number of constant args                     8
 Max size of kernel argument                     1024