HD Graphics 4000 performance issues with OpenGL - Windows

[idata]

Hello,

I am experiencing performance issues when running an OpenGL application with the Intel HD Graphics 4000.

System properties:

Motherboard: Intel DH77DF

BIOS: KCH7710H.86A.0103.2012.1029.1732

CPU: Core i7-3770S (8M Cache, 3.10 GHz)

Memory: 16 GB

Memory speed: 1600 MHz

OS: Windows 7 Professional SP1 64-bit

GPU: Intel HD Graphics 4000

Graphics driver version: 9.17.10.2875

Video BIOS: 2143.0

Display resolution: 1920x1080

Refresh rate: 60p Hz

The application consists in displaying images in a window either at the highest frame rate possible or at 60 fps with vsync on.

Here are some frame rate results with vsync off:

-window size of 480x270: ~2000 fps

-window size of 960x540: ~300 fps

-window size of 960x1080: ~145 fps

-full screen window: ~65 fps

And these are results with vsync on:

-window size of 480x270: ~32 fps

-window size of 960x540: ~60 fps

-window size of 960x1080: ~59.5 fps

-full screen window: ~59 fps

Running two instances of this same test application causes the performance figures to drop to the following (vsync off):

-window size of 480x270: varies between 500 and 1500 fps

-window size of 960x540: ~140 fps

-window size of 960x1080: ~62 fps

-full screen windows: ~30 fps

With two instances and vsync on:

-window size of 480x270: ~58 fps

-window size of 960x540: ~58 fps

-window size of 960x1080: ~50 fps

-full screen windows: ~30 fps

Something is clearly wrong when vsync is on and there seems to be a very high performance drop when vsync is off and the window size is increased.

Can anybody help on this?

Cheers,

e_dod_as

[NICHOLAS_F_Intel]

Hi e_dod_as,

What OpenGL application are you referring to specifically?

Thanks,

-Nic

[idata]

Hi,

It's an application I have developed, I can send it to you if you want.

[idata]

Below is an e-mail I received from Intel support regarding this issue. I hope it helps (the date of the e-mail is Dec 19 2012).

Hello Barry,

Thank you for contacting Intel Customer Support.

I understand you need information about OpenGL* support on the Intel® HD Graphics 4000.

The Intel® HD Graphics 4000 supports OpenGL* 4.0, you need the latest Intel(R) Graphics Driver to enable this feature.

If you are interested in additional information about the graphics controller see here: http://software.intel.com/en-us/articles/quick-reference-guide-to-intel-processor-graphics http://software.intel.com/en-us/articles/quick-reference-guide-to-intel-processor-graphics

Sincerely,

========

Intel Customer SupportAllan