Bug 26809

Summary: KMS/R200: Bad shading in NWN since Mesa rewrite
Product: Mesa Reporter: Alan Swanson <reiver>
Component: Drivers/DRI/r200Assignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments: r200-nwn-plaza.jpg
r200-nwn-indoor.jpg

Description Alan Swanson 2010-02-28 14:19:33 UTC 
Created attachment 33655 [details]
r200-nwn-plaza.jpg

Neverwinter Nights with KMS has rendering problems possibly related to other R200 KMS shading issues reported while before the Radeon rewrite was merged, Mesa 7.5.2 is fine.

On rv250; characters are almost black except when highlighted with a mouse over,  general scenery appears darker than old reference whilst objects flip to black as a scene view is rotated.

On R200; characters are very dark but do have some shading compared to rv250, general scenery tends to flicker madly inverting shading on each tile and even borders of interface flicker. Note though that am using patch from bug 25544 to disable texture checking to allow R200 to run but don't think it should be relevant.

(UMS on both tends to die quickly for other reasons but concentrating on KMS as the future.)

Attached are comparative screenshots of two scenes with current Mesa git, libdrm 2.4.18 and Linux 2.6.33.
Comment 1 Alan Swanson 2010-02-28 14:21:47 UTC 
Created attachment 33656 [details]
r200-nwn-indoor.jpg

Bit harder to see as shading is more coloured in this scene but R200 still has flickering on floor tiles.
Comment 2 Roland Scheidegger 2012-12-10 16:38:39 UTC 
Ought to be fixed by 320d531373e7b0873f5de42f6173b986290f593f.

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