Bug 40268

Summary: glClampColor function is not found
Product: xorg Reporter: snake5creator
Component: Driver/RadeonAssignee: xf86-video-ati maintainers <xorg-driver-ati>
Status: RESOLVED NOTABUG QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
glxinfo output
none
dmesg output
none
latest xorg log none

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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