Bug 21668

Summary:	[i915]fail to enable dri due to "undefined symbol: intel_generate_mipmap"
Product:	Mesa	Reporter:	liuhaien <haien.liu>
Component:	Drivers/DRI/i915	Assignee:	Eric Anholt <eric>
Status:	VERIFIED FIXED	QA Contact:
Severity:	blocker
Priority:	highest	Keywords:	regression
Version:	unspecified
Hardware:	Other
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	xorg.0.log xorg conf file fix.patch

Description liuhaien 2009-05-10 19:26:14 UTC

Created attachment 25710 [details]
xorg.0.log

System Environment:
--------------------------
Host:		x-915gm
Platform:       915gm
Libdrm_valgrind:		(master)94d48d038502097ebfa2e33e4a75b9e0e675231d
Mesa:		(master)53c2cc8fefa07723fc456d94eda292e201c41dae
Xserver:		(master)1e816065e5ec3b9394dc1fa5815457a664e15fd9
Xf86_video_intel:		(master)8d27247829fe4f55691ce68f9f4b14810fb34b32
Kernel:       (for-linus)79f11c19a396e8cea7dad322dcfb46c0a8517fe6

Bug detailed description:
-------------------------
dri on all i915 machines can not be enabled recently. some error will come out with startx as below:
(EE) AIGLX error: dlopen of /opt/X11R7/lib/dri/i915_dri.so failed (/opt/X11R7/lib/dri/i915_dri.so: undefined symbol: intel_generate_mipmap)
(EE) AIGLX: reverting to software rendering

we try to bisect and find eric's commit cause this issue; dri works if revert  this commit.
commit 1d663ae2925ffadf419ddbea9eca8d5706ea6510
Author: Eric Anholt <eric@anholt.net>
Date:   Thu May 7 22:50:19 2009 -0700

    intel: Add a metaops version of glGenerateMipmapEXT/SGIS_generate_mipmaps.

    In addition to being HW accelerated, it avoids the incorrect
    (black) rendering of the mipmaps that SW was doing in fbo-generatemipmap.
    Improves the performance of the mipmap generation and drawing in
    fbo-generatemipmap by 30%.

this issue blocks our nightly testing on i915.

Comment 1 liuhaien 2009-05-10 19:26:35 UTC

Created attachment 25711 [details]
xorg conf file

Comment 2 liuhaien 2009-05-10 23:54:21 UTC

maybe the file "intel_generatemipmap.c" isn't compiled. I add it in src/mesa/drivers/dri/i915/Makefile. and this issue goes away. the patch is attached.

Comment 3 liuhaien 2009-05-10 23:54:56 UTC

Created attachment 25722 [details]
fix.patch

Comment 4 Eric Anholt 2009-05-12 11:30:17 UTC

commit 0fc5fa85bf858ba2ad88995f65cc48b2dab1298d
Author: Eric Anholt <eric@anholt.net>
Date:   Tue May 12 10:03:08 2009 -0700

    i915: Fix driver after HW glGenerateMipmap commit.

Comment 5 liuhaien 2009-05-12 18:34:14 UTC

verified.

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