Bug 13862

Summary:	FlightGear 1.0 falls to software mode on r300
Product:	DRI	Reporter:	Jacek Poplawski <jacekpoplawski>
Component:	General	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	XOrg git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Jacek Poplawski 2007-12-30 04:40:47 UTC

FlightGear loads very slowly, then falls into software mode.
I tried to change rendering options but everything seams to be disabled.

(--) PCI:*(1:0:0) ATI Technologies Inc Radeon R350 [Radeon 9800 Pro] rev 0, Mem @ 0xe8000000/27, 0xfbe00000/16, I/O @ 0xe000/8, BIOS @ 0xfbd00000/17
(...)
(--) RADEON(0): Chipset: "ATI Radeon 9800PRO NH (AGP)" (ChipID = 0x4e48)

flightgear 1.0.0
xorg-server 1.4.0.90
xf86-video-ati 6.7.197
libgl 7.0.1
kernel26 2.6.23.12
libdrm 2.3.0
(ArchLinux)

NeverBall, FooBillard and Blender works in accelerated mode.

FlightGear console output:

[jp@darkwood ~]$ fgfs
libGL warning: 3D driver claims to not support visual 0x6a
  Model Author:  Unknown
  Creation Date: 2002-01-01
  Version:       $Id: c172p.xml,v 1.18 2007-01-15 12:50:45 ehofman Exp $
  Description:   Cessna C-172
*********************************WARN_ONCE*********************************
File r300_render.c function r300Fallback line 471
Software fallback:ctx->Line.SmoothFlag
***************************************************************************
Initializing Nasal Electrical System
power up
*********************************WARN_ONCE*********************************
File r300_render.c function r300Fallback line 470
Software fallback:ctx->Line.StippleFlag
***************************************************************************
freeglut  ERROR:  Function <glutSetCursor> called without first calling 'glutInit'.


Blender console output:

[jp@darkwood ~]$ blender
Compiled with Python version 2.5.1.
Checking for installed Python... got it!
libGL warning: 3D driver claims to not support visual 0x6a
*********************************WARN_ONCE*********************************
File r300_render.c function r300Fallback line 471
Software fallback:ctx->Line.SmoothFlag
***************************************************************************
*********************************WARN_ONCE*********************************
File r300_render.c function r300Fallback line 470
Software fallback:ctx->Line.StippleFlag
***************************************************************************

Comment 1 Roland Scheidegger 2007-12-30 06:00:15 UTC

The driver can't do (though the chip might) smooth lines and line stippling. Use driconf to disable low impact fallbacks (or set "disable_lowimpact_fallback" env var to false), I'm not sure though that mesa 7.0.1 is new enough for this to work.

Comment 2 Jacek Poplawski 2007-12-30 06:40:25 UTC

It works, thanks.
Why it isn't needed in Blender, which displays similiar messages?

Comment 3 Alex Deucher 2007-12-30 23:44:55 UTC

(In reply to comment #2)
> It works, thanks.
> Why it isn't needed in Blender, which displays similiar messages?
> 

It depends how extensively those features are used in each app.

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