Bug 44695

Summary:	Rendering glitch in ShaderToy Monjori demo with Mesa 7.11 Gallium 0.4 AMD RV710
Product:	Mesa	Reporter:	Benoit Jacob <bjacob>
Component:	Drivers/Gallium/r600	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED INVALID	QA Contact:
Severity:	normal
Priority:	medium	CC:	christopher.m.penalver
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	capture of the canvas, showing the rendering bug

Description Benoit Jacob 2012-01-11 10:21:11 UTC

My setup: Ubuntu 11.10 x86_64, Mesa 7.11, Gallium 0.4 on AMD RV710.

Steps to reproduce: in Firefox (I'm on Firefox 12 / Nightly but that shouldn't
matter):

1. Go to this URL:
   http://www.iquilezles.org/apps/shadertoy/
2. in the 'Presets' drop-down, select Monjori
3. click 'Load'

Expected result: purple-colored glittery wobbly surface should fill the whole canvas

Actual result: the purple-colored stuff is only painted in the lower-left corner of the canvas, the rest of the canvas stays black.

Comment 1 Benoit Jacob 2012-01-11 10:23:53 UTC

Created attachment 55459 [details]
capture of the canvas, showing the rendering bug

Notice how the limit of the purple are is slightly oblique... maybe that contains a clue as to what the problem is.

Comment 2 Christoph Brill 2015-11-18 20:18:03 UTC

This was tested against an old version of mesa. Does this still persist on mesa 11.0.x or later?

Comment 3 Christopher M. Penalver 2016-02-26 03:33:27 UTC

Benoit Jacob, Ubuntu 11.10 reached EOL on May 9, 2013. For more on this, please see https://wiki.ubuntu.com/Releases.

If this is reproducible in a supported release, it will help immensely if you filed a new report with Ubuntu by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information running the following from a terminal:
ubuntu-bug xorg

Also, please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.

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