Intel 945G Z-Buffer Sorting Randomization

idata — Thu, 03 Sep 2009 00:14:07 GMT

Hello,

I'm using an Intel 82945G Express Graphics chipset, with the 6.14.10.4926 driver (15/02/2008). I'm having issues in OpenGL where z-buffer sorting is being reversed or, seemingly, randomized. This issue is essentially identical to the one discussed http://software.intel.com/en-us/forums/user-community-for-visual-computing/topic/58667/ here.

The issue is described best by the "resolved issue" for the Mobile Intel® 965 Express Chipset Family and others, of the reference number 2855450 (See http://downloadmirror.intel.com/17354/eng/relnotes_2k_xp_gfx.htm here).

To clarify, the way I am encountering this issue is in a game map editor called Valve Hammer Editor. It uses OpenGL for the 3D rendering view. When I attempt to select an object, the wall behind it is selected instead. If I hold the left mouse button down, it cycles through possible object selections, eventually coming to the object I wished to initially select (The one in the foreground). Thus, the object is indeed being registered in the z-buffer, but is not being selected as it is supposed to.

This issue is making it so that I cannot continue work on any of my projects. Assistance would be appreciated.

Re: Intel 945G Z-Buffer Sorting Randomization

idata — Wed, 12 May 2010 03:17:01 GMT

I just posted the same issue under http://communities.intel.com/message/92228# 92228. The problem is that the depth info is identical for all objects found, so depth-based sorting does not do any good, so the result is a seamingly random pick. Did your issue get resolved somehow?

I am surprised that there is no further posting on this since almost a year ago...

topic Intel 945G Z-Buffer Sorting Randomization in Graphics

Intel 945G Z-Buffer Sorting Randomization

Re: Intel 945G Z-Buffer Sorting Randomization