Opengl "persistence" error

GNU Radio
1

Every time I tick the “Persistence” box in one of the scopes i get this
error :

Traceback (most recent call last):
File
“/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/plotter/plotter_base.py”,
line 192, in _on_paint
GL.glAccum(GL.GL_LOAD, 1.0)
File “/usr/lib/pymodules/python2.6/OpenGL/error.py”, line 208, in
glCheckError
baseOperation = baseOperation,
OpenGL.error.GLError: GLError(
err = 1282,
description = ‘invalid operation’,
baseOperation = glAccum,
cArguments = (GL_LOAD, 1.0)
)

i have correctly installed my ati catalyst drivers on my laptop (latest
version). My laptop GPU is a Radeon HD4570 and my OS Ubuntu 10.10. I
compiled and installed from source gnuradio v. 3.3.0.

Regards

      Arturo R.
2

On 04/01/2011 07:43 AM, Arturo R. wrote:

baseOperation = baseOperation,

OpenGL.error.GLError: GLError(
err = 1282,
description = ‘invalid operation’,
baseOperation = glAccum,
cArguments = (GL_LOAD, 1.0)
)

It happens on all of my computers too. I think the persistence uses a
hardware feature that is not widely implemented. -Josh

3

Il 01/04/2011 17:21, Josh B. ha scritto:

File “/usr/lib/pymodules/python2.6/OpenGL/error.py”, line 208, in
hardware feature that is not widely implemented. -Josh
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In fact on my nvidia GF 6800GT i have never experienced such an error.
Maybe an nVidia cards hardware feature ?

4

On 04/01/2011 12:29 PM, Arturo R. wrote:

It happens on all of my computers too. I think the persistence uses a
hardware feature that is not widely implemented. -Josh

Reinforces my notion that OpenGL is broken in so many fundamental ways.

You can’t reliably predict what an OpenGL app is going to do on any
random hardware. The implementations seem to
routinely break the traditions of abstraction. It’s downright
infuriating. Simple 2D graphics such as is used in Gnu Radio
should “just work”, regardless of the hardware. I mean, if the
freaking login window can render, then Gnu Radio apps
should be able to.

–
Marcus L.
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

5

On Sat, Apr 2, 2011 at 5:53 AM, Marcus D. Leech [email protected]
wrote:

routinely break the traditions of abstraction. It’s downright infuriating.
Simple 2D graphics such as is used in Gnu Radio
should “just work”, regardless of the hardware. I mean, if the freaking
login window can render, then Gnu Radio apps
should be able to.

I believe the accumulator buffer has been deprecated in OpenGL 3
(don’t know exactly when it was removed), and I can imagine that newer
cards no longer support it.

Alex