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Maniphest T42917

Sun lamp shadows broken in GLSL view
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Description

System Information
Win 7 64bit
Mobility radeon 5650
Catalyst driver 12.10

Blender Version
Broken: blender-2.73-testbuild1-win64
Worked: Official 2.72b

Short description of error
Sun shadows in GLSL view do not look right. It appears the whole of the shadow map frustrum is filled with the shaded value. I'm attaching a comparison screenshots from the viewport. The bug happens with simple and variance shadow map style.

I do have older drivers, but everything worked well so far. If other cards work properly I could test with a newer driver version.


Revisions and Commits

rB Blender
rB3e61478b1be7 Fix T42917 shadow maps not working on ATIs.

Event Timeline

Matjaž Lamut (lamoot) created this task.Dec 16 2014, 7:30 AM
Matjaž Lamut (lamoot) raised the priority of this task from to 90.
Matjaž Lamut (lamoot) updated the task description. (Show Details)
Matjaž Lamut (lamoot) added a project: BF Blender.
Matjaž Lamut (lamoot) edited a custom field.
Matjaž Lamut (lamoot) added a subscriber: Matjaž Lamut (lamoot).
Antonis Ryakiotakis (psy-fi) lowered the priority of this task from 90 to 30.Dec 16 2014, 1:44 PM
Antonis Ryakiotakis (psy-fi) added a subscriber: Antonis Ryakiotakis (psy-fi).

Test file or it didn't happen.

Antonis Ryakiotakis (psy-fi) added a comment.Dec 16 2014, 1:50 PM

Just a note here, we had an issue there but was fixed 1-2 weeks ago. If this is happening on latest builds from builder.blender.org we really need a test file to reproduce.

Matjaž Lamut (lamoot) added a comment.Dec 16 2014, 7:29 PM

I'm attaching a test file and a screenshot of how it looks like on my computer. It happens with a very simple setup already, default cube, plane and a sun lamp with shadows enabled.

I tested the file in the following blender versions with the same result.
blender-2.73-testbuild1-win64
blender-2.72-7234153-win64

testfile_brokenGLSLshadows.blend64 KBDownload

Julian Eisel (Severin) added a subscriber: Julian Eisel (Severin).Dec 16 2014, 7:35 PM

Cannot confirm here... Smelling a driver issue, or something Windows related

Julian Eisel (Severin) raised the priority of this task from 30 to Normal.Dec 16 2014, 7:35 PM
Antonis Ryakiotakis (psy-fi) added a comment.Dec 16 2014, 7:49 PM

Cannot confirm here either I'm afraid. Can you try with factory settings? Also, can you attach a system_info.txt file generated from blender (see http://blender.org/manual/vitals/help.html#diagnostics-options)?

Matjaž Lamut (lamoot) added a comment.Dec 16 2014, 8:00 PM

Factory settings give the same result. I'm attaching the system_info file.

system-info.txt10 KBDownload

I'll see if I can test this on another OS tomorrow. Or if possible get the latest drivers installed (tricky due to manufacturer limiting which drivers can be installed).

Antonis Ryakiotakis (psy-fi) claimed this task.Dec 16 2014, 8:23 PM

Alright, I can confirm on the MacOS trashcan I'll see if I can fix this

Matjaž Lamut (lamoot) added a comment.Dec 16 2014, 8:23 PM

Ok, I tested blender-2.72-7234153-linux-glibc211-x86_64 on Linux Mint 17 with default open source drivers and everything displays fine. It appears the issue is indeed with windows/driver.

Antonis Ryakiotakis (psy-fi) changed the task status from Unknown Status to Resolved.Dec 16 2014, 9:55 PM
Antonis Ryakiotakis (psy-fi) added a commit: rB3e61478b1be7: Fix T42917 shadow maps not working on ATIs..

Closed by commit rB3e61478b1be7.

Antonis Ryakiotakis (psy-fi) added a comment.Dec 16 2014, 9:59 PM

It was a real issue after all, it's just that NVIDIA is often much more forgiving in OpenGL use. Thanks for the report!

Matjaž Lamut (lamoot) added a comment.Dec 17 2014, 9:49 AM

I tested with the latest build from buildbot and the issue is gone here as well. Thank you for the fix.