Bug 709676

Summary: [PALM][llvmpipe] rendering diff with or without back face culling
Product: [Fedora] Fedora Reporter: François Cami <fdc>
Component: mesaAssignee: Dave Airlie <airlied>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 15CC: ajax
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-08-07 14:37:58 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
teapot (without culling ?)
none
teapot (with culling ?)
none
fbotexture (without culling ?)
none
fbotexture (with culling ?) none

Description François Cami 2011-06-01 11:09:22 UTC 
Description of problem:
The teapot in "fbotexture", and the teapot shadow in "teapot", show rendering differences with, and without back face culling.
This happens using hardware acceleration (on PALM-type hardware, AMD E-350) and with llvmpipe (LIBGL_ALWAYS_SOFTWARE=1).


Version-Release number of selected component (if applicable):
kernel-2.6.38.6-27.fc15.x86_64
mesa-libGL-7.11-0.11.20110525.0.fc15.x86_64
mesa-dri-drivers-7.11-0.11.20110525.0.fc15.x86_64
mesa-dri-llvmcore-7.11-0.11.20110525.0.fc15.x86_64
xorg-x11-drv-ati-6.14.1-2.20110525gitfe5c42f51.fc15.x86_64
mesa-demos-7.10-4.20101028.fc15.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Launch either fbotexture or teapot (in mesa-demos)
2. Toggle back face culling

Actual results:
Look at the limit between the teapot and the cover, it becomes transparent (probably with culling) or is solid (probably without culling).

Expected results:
No rendering difference.

Additional info:
Screenshots coming.
Comment 1 François Cami 2011-06-01 11:10:08 UTC 
Created attachment 502220 [details]
teapot (without culling ?)
Comment 2 François Cami 2011-06-01 11:10:37 UTC 
Created attachment 502221 [details]
teapot (with culling ?)
Comment 3 François Cami 2011-06-01 11:11:04 UTC 
Created attachment 502222 [details]
fbotexture (without culling ?)
Comment 4 François Cami 2011-06-01 11:11:26 UTC 
Created attachment 502223 [details]
fbotexture (with culling ?)
Comment 5 Fedora End Of Life 2012-08-07 14:38:02 UTC 
This message is a notice that Fedora 15 is now at end of life. Fedora
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