[Bug 29226] New: on r600 3d applications are rendered too bright

[Bug 29226] New: on r600 3d applications are rendered too bright

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

           Summary: on r600 3d applications are rendered too bright
           Product: DRI
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: hramrach@centrum.cz


I am running r600 card with 2.6.34 kernel and Mesa 7.8.2.
 ATI Technologies Inc RV710 [Radeon HD 4350]

Since switching to the card I noticed rendering issues the most prominent being
incorrect colors.

The colors of many objects seem overly bright and lack saturation, the lighted
areas show large patches of white or nearly white color.

The UI which is 2d/unlit looks OK and so do glxgears.

This does not happen on r300 card or Intel card.

I tried running planeshift with software rendering and the character preview
after logging in looked much better. However, after running with software
renderer the issue is gone. This might be because planeshift calculates some
lighting information during runtime and it was changed by the calculations
performed on the software renderer.

Planeshift can be found at http://www.planeshift.it/download.html

I am not sure what the exact issue is. So far I was unable to reproduce it
visibly with a trivial program. However, it also happens when running a 3D
program through wine.

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[Bug 29226] on r600 3d applications are rendered too bright

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #1 from Michal Suchanek <hramrach@centrum.cz> 2010-07-23 04:20:17 PDT ---
I can no longer reproduce the issue with planeshift but it's easily
reproducible with Fiesta (it's already visible on the login screen).

The downside is that it requires wine.

http://fiesta-online.gamigo.com/

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[Bug 29226] on r600 3d applications are rendered too bright

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #2 from Michal Suchanek <hramrach@centrum.cz> 2010-07-23 05:32:56 PDT ---
Created an attachment (id=37334)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37334)
rendered on Intel graphics

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[Bug 29226] on r600 3d applications are rendered too bright

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #3 from Michal Suchanek <hramrach@centrum.cz> 2010-07-23 05:33:41 PDT ---
Created an attachment (id=37335)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37335)
Rendered on r600

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

Michal Suchanek <hramrach@centrum.cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|on r600 3d applications are |on r600 3d applications are
                   |rendered too bright         |rendered in too bright
                   |                            |colors

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #4 from Michal Suchanek <hramrach@centrum.cz> 2010-08-05 06:52:13 PDT ---
Created an attachment (id=37585)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37585)
rendered on r600g

Apart from other glitches the color issue also appears on r600g

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #5 from Michal Suchanek <hramrach@centrum.cz> 2010-08-05 10:11:07 PDT ---
As suggested by people on irc I found a demo that shows a similar issue.

The demo is shadowtex from current mesa git.

The green ball in the demo using the fixed function shader (default) on Intel
renders only slightly edgy ball but a ball with a flat spot on r600.

The demo currently crashes on r600g. 

Note that the demo is designed to showcase features that don't work at all on
Intel and a simpler demo with the shader only should be possible. Note that due
to the features present on r600 you may need to cycle through the different
composition modes with the 'o' key until most of the surface is shown in the
brighter color and the flat area is visible.

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #6 from Michal Suchanek <hramrach@centrum.cz> 2010-08-05 10:11:42 PDT ---
Created an attachment (id=37596)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37596)
shadowtex on r600

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #7 from Michal Suchanek <hramrach@centrum.cz> 2010-08-05 10:12:16 PDT ---
Created an attachment (id=37597)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37597)
shadowtex on intel

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #8 from Michal Suchanek <hramrach@centrum.cz> 2010-08-05 17:24:35 PDT ---
Created an attachment (id=37605)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37605)
a simplified version of shadowtex

Attaching a simplified vesion of shadowtex which only uses the vertex program,
no textures.

This demo fails equally on r600 and r600g, no more crash.

For your convenience the scene is rotated so that the misrendered green ball is
in front.

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #9 from Michal Suchanek <hramrach@centrum.cz> 2010-08-08 04:30:07 PDT ---
I tried on r300g but apparently I did not compile the driver and get only
llvmpipe:

OpenGL renderer string: Gallium 0.4 on llvmpipe
OpenGL version string: 2.1 Mesa 7.9-devel
OpenGL shading language version string: 1.20

The ligting issue is present and so are interesting texture patterns.

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #10 from Michal Suchanek <hramrach@centrum.cz> 2010-08-08 04:41:05 PDT ---
ok, so hte r300 gallium driver was only misnamed.

The ligtning issue does not happen with r300g or r300 but does happen with
llvmpipe when none of the dri modules can be found.

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[Bug 29226] on r600 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #11 from Michal Suchanek <hramrach@centrum.cz> 2010-08-11 09:44:28 PDT ---
Piglit with test added for the lighting issue.

http://repo.or.cz/w/piglit/hramrach.git/shortlog/refs/heads/wip

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[Bug 29226] on r600 and llvmpipe 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

Michal Suchanek <hramrach@centrum.cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|on r600 3d applications are |on r600 and llvmpipe 3d
                   |rendered in too bright      |applications are rendered
                   |colors                      |in too bright colors

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[Bug 29226] on r600 and llvmpipe 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #12 from Michal Suchanek <hramrach@centrum.cz> 2010-08-20 06:55:04 PDT ---
I am not sure the lighting issue is actually related to the issue in wine.

I tried to build a mesa without GL_LIGHTING and at least some object were still
too bright.

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[Bug 29226] on r600 and llvmpipe 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #13 from Benjamin Bellec <b.bellec@gmail.com> 2011-06-04 20:04:24 PDT ---
Similar behaviour has been fixed recently.

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[Bug 29226] on r600 and llvmpipe 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

--- Comment #14 from Michal Suchanek <hramrach@gmail.com> 2011-06-06 07:46:16 PDT ---
Yes, this has been fixed in 7.11.

A piglit test for this would be nice because it was a longstanding issue for
which I did not find any test neither in piglit nor in mesa-demos.

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[Bug 29226] on r600 and llvmpipe 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

Michal Suchanek <hramrach@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

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[Bug 29226] on r600 and llvmpipe 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

Michal Suchanek <hramrach@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |

--- Comment #15 from Michal Suchanek <hramrach@gmail.com> 2011-06-23 10:12:53 PDT ---
And no it's back...

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[Bug 29226] on r600 and llvmpipe 3d applications are rendered in too bright colors

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https://bugs.freedesktop.org/show_bug.cgi?id=29226

José Fonseca <jfonseca@vmware.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #16 from José Fonseca <jfonseca@vmware.com> ---
I just tried the simplied version of shadowtex w/ llvmpipe, and it renders the
exactly same things as NVIDIA.

I supposed it was fixed eventually.

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