Bug 40268 - glClampColor function is not found
Summary: glClampColor function is not found
Status: RESOLVED NOTABUG
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-08-21 06:32 UTC by snake5creator
Modified: 2011-08-22 01:35 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
glxinfo output (23.54 KB, text/plain)
2011-08-21 12:12 UTC, snake5creator 		no flags Details
dmesg output (51.60 KB, text/plain)
2011-08-21 12:13 UTC, snake5creator 		no flags Details
latest xorg log (50.41 KB, text/plain)
2011-08-21 12:13 UTC, snake5creator 		no flags Details
View All

Description snake5creator 2011-08-21 06:32:20 UTC 
Tried to call glClampColor to disable clamping of shader outputs.
Works on fglrx and the Catalyst drivers on Windows.
glew didn't find the function with this driver (glClampColor=NULL, calling it means getting a segfault).
Comment 1 Alex Deucher 2011-08-21 08:57:42 UTC 
What hardware and driver are you using?  Please attach your xorg log, dmesg output, and glxinfo output.
Comment 2 snake5creator 2011-08-21 12:12:33 UTC 
Created attachment 50434 [details]
glxinfo output
Comment 3 snake5creator 2011-08-21 12:13:15 UTC 
Created attachment 50435 [details]
dmesg output
Comment 4 snake5creator 2011-08-21 12:13:56 UTC 
Created attachment 50436 [details]
latest xorg log
Comment 5 snake5creator 2011-08-21 12:18:16 UTC 
I'm using MSI Radeon HD 4850 and the latest xorg driver I could get from Synaptic. Last message in dmesg log is the same error that I described before.
Comment 6 Michel Dänzer 2011-08-22 01:25:32 UTC 
I don't think there's a bug here: glClampColor is an OpenGL 3.0 function, but as you can see in the glxinfo output, the driver (just like any other Mesa driver) can only support OpenGL 2.1.
Comment 7 snake5creator 2011-08-22 01:35:32 UTC 
Ah, right. Unfortunately. Perhaps anyone have any idea when could GL3+ support be coming to Mesa and these drivers?

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