Search found 29 matches

by jostein_aarbakk
Fri Feb 14, 2014 9:04 am
Forum: General Developer Support
Topic: Occasional "stuttering" in graphics scrolling
Replies: 9
Views: 4305

Re: Occasional "stuttering" in graphics scrolling

I have actually tried the recommended way of double buffering "by the book" in the past, using messagePorts for each of the the 2 buffers ("Safe to display" and "Safe to write"). (Without any WaitTOF() at all in the loop..). But it doesn't help; Same results. As mentioned, I don't do any graphics pr...
by jostein_aarbakk
Fri Feb 14, 2014 12:51 am
Forum: General Developer Support
Topic: Occasional "stuttering" in graphics scrolling
Replies: 9
Views: 4305

Re: Occasional "stuttering" in graphics scrolling

I use this type of doublebuffering: - 2 buffers (front & back), allocated by IIntuition->AllocScreenBuffer(). - Image blitting etc. only on the back buffer Concept in the loop: 1. WaitTOF() 2. Makes the backbuffer visible by swapping the 2 buffers (using IIntuition->ChangeScreenBuffer()) 3. Copies t...
by jostein_aarbakk
Thu Feb 13, 2014 7:34 pm
Forum: General Developer Support
Topic: Occasional "stuttering" in graphics scrolling
Replies: 9
Views: 4305

Re: Occasional "stuttering" in graphics scrolling

When single buffering, the glitches appear on the top. How far down, depends on how delayed the vertical blanking finalization is. With double buffering, it appear for the whole screen of course (as buffer swapping gets delayed). The strange thing is that this happen's even when CPU-load is at idle....
by jostein_aarbakk
Tue Feb 11, 2014 10:44 pm
Forum: General Developer Support
Topic: Occasional "stuttering" in graphics scrolling
Replies: 9
Views: 4305

Occasional "stuttering" in graphics scrolling

Hello, I have the following issue on my AmigaOS4-system: Occasional "stuttering" in graphics animations (f.ex. in 2D horisontal screen scrolling, using blitting operations). I've been working on making a simple game for AmigaOS4 with focus on smooth animations (in full screen), but it seems "impossi...
by jostein_aarbakk
Sun Dec 09, 2012 4:11 am
Forum: Platform: AmigaOne 500 and Sam series
Topic: Issues (incl. system freeze) when writing data to DVD/CDs.
Replies: 2
Views: 4857

Issues (incl. system freeze) when writing data to DVD/CDs.

Hello, Below is a description of an issue I have with my Sam440ep/OS4.1 system. Thanks in advance for any help. Summary of the problem When writing DVD-media by using: - interal SATA DVD-writer, the issue is: Actual burning speed won't exceed 700KB/sec, which is way too low. - external USB-writer, t...
by jostein_aarbakk
Sun Sep 02, 2012 4:29 pm
Forum: General AmigaOS
Topic: OS4.1 update 5 - Shell issues
Replies: 8
Views: 2681

Re: OS4.1 update 5 - Shell issues

Now it works, even when: 1) the Shell is configured to use the old window tooltype (WINDOW=CON:50/50/600/350/AmigaShell/CLOSE) and 2) the GUI Preference option "Window refresh type" is set to "Smart" (the "GUI preferences window, subsystem "Options"). In the "GUI preferences" window, subsystem "Cont...
by jostein_aarbakk
Sun Sep 02, 2012 3:53 pm
Forum: General AmigaOS
Topic: OS4.1 update 5 - Shell issues
Replies: 8
Views: 2681

Re: OS4.1 update 5 - Shell issues

tonyw wrote:..I suggest that you change the tooltype in the Shell icon to add "Simple"..
Ok. Now I have changed the WINDOW tooltype as you described it, and made a new test, but the behaviour is still the same.
by jostein_aarbakk
Sat Sep 01, 2012 9:38 pm
Forum: General AmigaOS
Topic: OS4.1 update 5 - Shell issues
Replies: 8
Views: 2681

Re: OS4.1 update 5 - Shell issues

You are somehow opening the console window with "Smart" refresh. Please tell how you are opening the Shell. The Shell is started by clicking on the Shell-icon in my AmiDock (the same that is available from the Workbench/System folder). Below are tests that shows what happens with different GUI opti...
by jostein_aarbakk
Sun Aug 26, 2012 12:08 pm
Forum: General AmigaOS
Topic: OS4.1 update 5 - Shell issues
Replies: 8
Views: 2681

OS4.1 update 5 - Shell issues

After upgrading to update 5 of OS4.1, I have experienced problems with the default Shell. There are 2 issues: 1) Copying text from the shell doesn't work (but paste does). 2) When shrinking the size of the shell window, and then making the window larger, all text that got cleared during the shrinkin...
by jostein_aarbakk
Fri Apr 20, 2012 1:15 am
Forum: General Developer Support
Topic: Inaccurate vertical blank timing (VBL)
Replies: 16
Views: 10136

Re: Inaccurate vertical blank timing (VBL)

@Hans: Did you try disabling both Limpid clock and CPUInfo? Yes. What else does Ranger list in running tasks/processes? GUI Objects: ----------- Maindock Exec tasks: ----------- application.library messageserver console.device EHCI Controller Task Unit 0 hub.usbfd hub.usbfd hub.usbfd idle.task input...