topic Re: OpenGL performance in HD4000 driver in Graphics

OpenGL performance in HD4000 driver

idata — Thu, 17 Jan 2013 20:28:27 GMT

When will the opengl performance issues of the HD4000 driver be fixed? I have a graphics application that runs at about 20 fps on sandy bridge core i7 laptop (HD 3000). On a similarly configured ivy bridge laptop, it drops to about 1 fps.

The problem appears to be related to the depth buffer. When the depth buffer is turned off performance is quite acceptable although the accuracy of the generated image is not acceptable without the depth testing. When the depth buffer is turned back on, the performance suffers.

Again, on an HD3000 laptop performance without a dedicated GPU is quite acceptable. Why can't the HD 4000 driver perform at least as well as the HD 3000?

RKA

Re: OpenGL performance in HD4000 driver

MSchm21 — Thu, 17 Jan 2013 21:20:59 GMT

What drivers did you use?

Re: OpenGL performance in HD4000 driver

idata — Thu, 17 Jan 2013 21:29:41 GMT

15.28.12.64.2932 (9.17.10.2932)

Also tried the earlier driver (October), but didn't see any difference.

Re: OpenGL performance in HD4000 driver

MSchm21 — Fri, 18 Jan 2013 00:59:13 GMT

[Edited for content]

Re: OpenGL performance in HD4000 driver

idata — Fri, 18 Jan 2013 03:20:33 GMT

Where can I get this version? I don't see it on the Intel download site.

Re: OpenGL performance in HD4000 driver

MSchm21 — Fri, 18 Jan 2013 13:33:03 GMT

[Edited for content]

Re: OpenGL performance in HD4000 driver

idata — Fri, 18 Jan 2013 15:31:55 GMT

What is the source of this version? I hesitate to install any driver from a public file sharing site.

Re: OpenGL performance in HD4000 driver

MSchm21 — Fri, 18 Jan 2013 16:41:54 GMT

[Edited for content]

Re: OpenGL performance in HD4000 driver

idata — Fri, 18 Jan 2013 18:22:27 GMT

[Edited for content] Performance on HD300 computers is still far superior.