Empathy List Archives

DW

David Williams

Wed, Mar 25, 2015 4:49 AM

Since the last major release (or soon before it) I'm pretty sure Animation
has changed for the worse.

Currently on Mac and Linux (nightly and release) animation flickers quite
considerably more than it used to. I don't think that it's running any
slower, I think, perhaps, the screen is being cleared a bit too early?

I just went back to version 2013.01+dfsg-2.2 and although most of my code
didn't run, (children() spoil everything) what did show up was smooth and
flicker free. Back on the current release, showing only that which
displayed on the old version, the display still flickered.

It's a bummer, because animation was rocking my world.

I have some pretty crappy video that shows the problem on my machine.

https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0
https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0

The video starts and ends at full speed with a slo-mo section in the middle.
I hope this helps. I'd really like flicker free animation back!

--
View this message in context: http://forum.openscad.org/Animation-flicker-tp12199.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

Since the last major release (or soon before it) I'm pretty sure Animation has changed for the worse. Currently on Mac and Linux (nightly and release) animation flickers quite considerably more than it used to. I don't think that it's running any slower, I think, perhaps, the screen is being cleared a bit too early? I just went back to version 2013.01+dfsg-2.2 and although most of my code didn't run, (children() spoil everything) what did show up was smooth and flicker free. Back on the current release, showing only that which displayed on the old version, the display still flickered. It's a bummer, because animation was rocking my world. I have some pretty crappy video that shows the problem on my machine. https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0 <https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0> The video starts and ends at full speed with a slo-mo section in the middle. I hope this helps. I'd really like flicker free animation back! -- View this message in context: http://forum.openscad.org/Animation-flicker-tp12199.html Sent from the OpenSCAD mailing list archive at Nabble.com.

W

whosawhatsis

Wed, Mar 25, 2015 5:04 AM

Noticed the same thing, seems like it's clearing the window when it starts rendering the new frame rather than waiting until it's ready to display. Lowering framerate leaves the image up longer, making it more usable, but it's not a good solution.

On Tuesday, March 24, 2015 at 21:49, David Williams wrote:

Since the last major release (or soon before it) I'm pretty sure Animation
has changed for the worse.

Currently on Mac and Linux (nightly and release) animation flickers quite
considerably more than it used to. I don't think that it's running any
slower, I think, perhaps, the screen is being cleared a bit too early?

I just went back to version 2013.01+dfsg-2.2 and although most of my code
didn't run, (children() spoil everything) what did show up was smooth and
flicker free. Back on the current release, showing only that which
displayed on the old version, the display still flickered.

It's a bummer, because animation was rocking my world.

I have some pretty crappy video that shows the problem on my machine.

https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0
https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0

The video starts and ends at full speed with a slo-mo section in the middle.
I hope this helps. I'd really like flicker free animation back!

--
View this message in context: http://forum.openscad.org/Animation-flicker-tp12199.html
Sent from the OpenSCAD mailing list archive at Nabble.com (http://Nabble.com).

OpenSCAD mailing list
Discuss@lists.openscad.org (mailto:Discuss@lists.openscad.org)
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

Noticed the same thing, seems like it's clearing the window when it starts rendering the new frame rather than waiting until it's ready to display. Lowering framerate leaves the image up longer, making it more usable, but it's not a good solution. On Tuesday, March 24, 2015 at 21:49, David Williams wrote: > Since the last major release (or soon before it) I'm pretty sure Animation > has changed for the worse. > > Currently on Mac and Linux (nightly and release) animation flickers quite > considerably more than it used to. I don't think that it's running any > slower, I think, perhaps, the screen is being cleared a bit too early? > > I just went back to version 2013.01+dfsg-2.2 and although most of my code > didn't run, (children() spoil everything) what did show up was smooth and > flicker free. Back on the current release, showing only that which > displayed on the old version, the display still flickered. > > It's a bummer, because animation was rocking my world. > > I have some pretty crappy video that shows the problem on my machine. > > https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0 > <https://www.dropbox.com/s/47yvwiv123408z9/os_flicker.MOV?dl=0> > > The video starts and ends at full speed with a slo-mo section in the middle. > I hope this helps. I'd really like flicker free animation back! > > > > -- > View this message in context: http://forum.openscad.org/Animation-flicker-tp12199.html > Sent from the OpenSCAD mailing list archive at Nabble.com (http://Nabble.com). > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org (mailto:Discuss@lists.openscad.org) > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > >

P

PolyVinalDistillate

Wed, Mar 25, 2015 10:18 AM

I noticed this as well some time back on a new version. Exact version number
unknown, but I did wind up returning to the old version I downloaded over a
year ago because the animation was more useable!

--
View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12201.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

I noticed this as well some time back on a new version. Exact version number unknown, but I did wind up returning to the old version I downloaded over a year ago because the animation was more useable! -- View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12201.html Sent from the OpenSCAD mailing list archive at Nabble.com.

P

PolyVinalDistillate

Fri, Mar 27, 2015 11:15 AM

I can definitely verify this issue in the most recent release of OpenSCAD. It
looks like double-buffering has been disabled for the 3D viewport. This
hampers use of the animation system to test inverse kinematics equations for
CNC machine designs (e.g. for my slightly non-standard delta printer
designs).

--
View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12239.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

I can definitely verify this issue in the most recent release of OpenSCAD. It looks like double-buffering has been disabled for the 3D viewport. This hampers use of the animation system to test inverse kinematics equations for CNC machine designs (e.g. for my slightly non-standard delta printer designs). -- View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12239.html Sent from the OpenSCAD mailing list archive at Nabble.com.

W

whosawhatsis

Fri, Mar 27, 2015 9:27 PM

Also, old versions used to cache more data, so once every frame had been compiled once, it could be displayed more quickly and smoothly the next time around until something changed. Recent versions don't seem to do this.

On Friday, March 27, 2015 at 04:15, PolyVinalDistillate wrote:

I can definitely verify this issue in the most recent release of OpenSCAD. It
looks like double-buffering has been disabled for the 3D viewport. This
hampers use of the animation system to test inverse kinematics equations for
CNC machine designs (e.g. for my slightly non-standard delta printer
designs).

--
View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12239.html
Sent from the OpenSCAD mailing list archive at Nabble.com (http://Nabble.com).

OpenSCAD mailing list
Discuss@lists.openscad.org (mailto:Discuss@lists.openscad.org)
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

Also, old versions used to cache more data, so once every frame had been compiled once, it could be displayed more quickly and smoothly the next time around until something changed. Recent versions don't seem to do this. On Friday, March 27, 2015 at 04:15, PolyVinalDistillate wrote: > I can definitely verify this issue in the most recent release of OpenSCAD. It > looks like double-buffering has been disabled for the 3D viewport. This > hampers use of the animation system to test inverse kinematics equations for > CNC machine designs (e.g. for my slightly non-standard delta printer > designs). > > > > -- > View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12239.html > Sent from the OpenSCAD mailing list archive at Nabble.com (http://Nabble.com). > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org (mailto:Discuss@lists.openscad.org) > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > >

DW

David Williams

Sat, Mar 28, 2015 6:31 PM

I have added this to the GitHub issue tracker.

https://github.com/openscad/openscad/issues/1284

--
View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12258.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

I have added this to the GitHub issue tracker. https://github.com/openscad/openscad/issues/1284 -- View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12258.html Sent from the OpenSCAD mailing list archive at Nabble.com.

DW

David Williams

Tue, Apr 14, 2015 3:43 PM

Sorry to waste forum bandwidth, but...

Thank you so much for fixing this! I downloaded the nightly build and we're
back to buttery smooth animation again. So happy!

--
View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12367.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

Sorry to waste forum bandwidth, but... Thank you so much for fixing this! I downloaded the nightly build and we're back to buttery smooth animation again. So happy! -- View this message in context: http://forum.openscad.org/Animation-flicker-tp12199p12367.html Sent from the OpenSCAD mailing list archive at Nabble.com.

JD

Jerry Davis

Fri, Apr 17, 2015 3:22 PM

just downloaded latest snapshot version. thanks for fixing this, in such a
timely manner.

Jerry

--
Extra Ham Operator: K7AZJ
Registered Linux User: 275424
Raspberry Pi and Arduino developer

The most exciting phrase to hear in science - the one that heralds new
discoveries - is not "Eureka!" but "That's funny...".- Isaac. Asimov

I
*f you give someone a program, you will frustrate them for a day; if you
teach them how to program, you will frustrate them for a lifetime. *-
Anonymous

If writing good code requires very little comments, then writing really
excellent code requires no comments at all!- Ken Thompson

On Tue, Apr 14, 2015 at 8:43 AM, David Williams david@davidthings.com
wrote:

Sorry to waste forum bandwidth, but...

Thank you so much for fixing this! I downloaded the nightly build and we're
back to buttery smooth animation again. So happy!

--
View this message in context:
http://forum.openscad.org/Animation-flicker-tp12199p12367.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

just downloaded latest snapshot version. thanks for fixing this, in such a timely manner. Jerry -- Extra Ham Operator: K7AZJ Registered Linux User: 275424 Raspberry Pi and Arduino developer *The most exciting phrase to hear in science - the one that heralds new discoveries - is not "Eureka!" but "That's funny...".*- Isaac. Asimov *I* *f you give someone a program, you will frustrate them for a day; if you teach them how to program, you will frustrate them for a lifetime. *- Anonymous *If writing good code requires very little comments, then writing really excellent code requires no comments at all!*- Ken Thompson On Tue, Apr 14, 2015 at 8:43 AM, David Williams <david@davidthings.com> wrote: > Sorry to waste forum bandwidth, but... > > Thank you so much for fixing this! I downloaded the nightly build and we're > back to buttery smooth animation again. So happy! > > > > > -- > View this message in context: > http://forum.openscad.org/Animation-flicker-tp12199p12367.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >

discuss@lists.openscad.org

Animation flicker