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by PeterO
Mon Jul 01, 2019 6:35 am
Forum: Advanced users
Topic: What's different about how the pi 4 boots?
Replies: 5
Views: 371

Re: What's different about how the pi 4 boots?

I don't think the details have been released yet (at least I've not seen them and I would read them if I did). I may have missed them of course :roll:
PeterO
by PeterO
Mon Jul 01, 2019 6:09 am
Forum: Troubleshooting
Topic: No hdmi signal on Pi4 using "hdmi1" after updating
Replies: 5
Views: 397

Re: No hdmi signal on Pi4 using "hdmi1" after updating

It seems that the code for HDMI-1 is sensitive to the state of the monitor. If I turn everything on together (Pi + Monitors) it boots OK.
If the monitor on HDMI-1 has gone into standby mode (because there is no video) then the boot will fail.

PeterO
by PeterO
Sun Jun 30, 2019 8:34 pm
Forum: OpenGLES
Topic: GLES3.0 :D at last
Replies: 24
Views: 794

Re: GLES3.0 :D at last

Brian Beuken wrote:
Sun Jun 30, 2019 8:25 pm
I'll upload it to my site hang on but you'll need visualGDB to build it
Sorry, can't help you then.
PeterO
by PeterO
Sun Jun 30, 2019 8:24 pm
Forum: OpenGLES
Topic: GLES3.0 :D at last
Replies: 24
Views: 794

Re: GLES3.0 :D at last

Where can we find the code to try out ?
PeterO
by PeterO
Sun Jun 30, 2019 7:43 pm
Forum: OpenGLES
Topic: GLES3.0 :D at last
Replies: 24
Views: 794

Re: GLES3.0 :D at last

Oh, hang on, you're doing this on a Pi3 ?
PeterO
by PeterO
Sun Jun 30, 2019 7:40 pm
Forum: OpenGLES
Topic: GLES3.0 :D at last
Replies: 24
Views: 794

Re: GLES3.0 :D at last

You are doing some thing wrong ! My (quite simple) demos are running at 60 fps and hardly any CPU load.

What configuration have you changed ? (Hint: I've changed nothing).

PeterO
by PeterO
Sun Jun 30, 2019 7:28 pm
Forum: OpenGLES
Topic: GLES3.0 :D at last
Replies: 24
Views: 794

Re: GLES3.0 :D at last

Which game is running that slow ?
PeterO
by PeterO
Sun Jun 30, 2019 6:06 pm
Forum: OpenGLES
Topic: Thread from Pi4 discussion
Replies: 80
Views: 4424

Re: Thread from Pi4 discussion

And to get the xwindow id of the window you are using to pass to egl. I have example code but I've just found a bug in it and I cant update github until I get home. PeterO This is where I am having issues, I can't get an XWindow You are running X aren't you ? (Best to check this now :-) ) PeterO
by PeterO
Sun Jun 30, 2019 3:58 pm
Forum: OpenGLES
Topic: Thread from Pi4 discussion
Replies: 80
Views: 4424

Re: Thread from Pi4 discussion

Yes, I'm just doing the same with my old demos. PeterO Should just be a case of treating it like a traditional linux build? There are code changes needed. I just have to make sure I'm including the correct mesa libs, not the raspberry libs which only work up to model 3. And to get the xwindow id of...
by PeterO
Sun Jun 30, 2019 3:10 pm
Forum: OpenGLES
Topic: Thread from Pi4 discussion
Replies: 80
Views: 4424

Re: Thread from Pi4 discussion

hmm I am having some issues, just trying to get gles2.0 projects that work on Pi3's to run. Are there dispmanx calls in there being passed to EGL? If so that's not how you do it with mesa libs. The native window given to EGL needs to be an X window handle., Im just trying to run my old GLES2.0 demo...
by PeterO
Sun Jun 30, 2019 11:45 am
Forum: Raspbian
Topic: Buster bug report thread
Replies: 113
Views: 8377

Re: Buster bug report thread

I'm started updating some of my openGLES code and I'm seeing some artifacts which seem related to frame buffer swapping. The picture below was extracted from a 480 frame/second video taken on a phone. The artifacts are visible by eye as well, RedGreen2.png Alternate frames of the wire frame model ar...
by PeterO
Sat Jun 29, 2019 12:30 pm
Forum: Troubleshooting
Topic: Trouble Getting HDMI Output From RPi4
Replies: 43
Views: 2046

Re: Trouble Getting HDMI Output From RPi4

I'm finding it difficult to get my twin headed PI4 to boot properly. It seems very sensitive to the power state of the monitors when the Pi is turned on.
PeterO
by PeterO
Sat Jun 29, 2019 11:59 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 705
Views: 60905

Re: Raspberry Pi 4 Thread - general discussion

Today I'm using my Pi4 at The National Museum Of Computing to run my Elliott 803 emulator because it is too hot to run the real machine (which is 50 years old and full of Germanium transistors).
https://pbs.twimg.com/media/D-OULw9W4AAHcg6.png:large
PeterO
by PeterO
Sat Jun 29, 2019 5:47 am
Forum: Raspbian
Topic: Buster bug report thread
Replies: 113
Views: 8377

Re: Buster bug report thread

I've seen some odd "tearing" artefacts on openGLES. They are most visible with a wireframe model that is moving sideways across the window. I tried to grab a frame with GIMP, but the buffer contents it grabs do not show the problem (or I failed to grab it when it happened, or grabbing the frame stop...
by PeterO
Fri Jun 28, 2019 7:41 pm
Forum: Troubleshooting
Topic: Wallpaper Option Not Showing Up Under Preferences??
Replies: 5
Views: 104

Re: Wallpaper Option Not Showing Up Under Preferences??

xscreensaver is not installed by default :roll:
You can add it from the Add/Remove software menu.
I've installed it on a Buster and it shows in the menu and works OK.
PeterO
by PeterO
Fri Jun 28, 2019 7:08 pm
Forum: Gaming
Topic: Open gl
Replies: 3
Views: 167

Re: Open gl

Make a note of this in https://www.raspberrypi.org/forums/view ... 6&t=243717 "Buster Bugs"
PeterO
by PeterO
Fri Jun 28, 2019 6:56 pm
Forum: General discussion
Topic: Raspbian Buster - 64 bit?!
Replies: 9
Views: 612

Re: Raspbian Buster - 64 bit?!

jahboater wrote:
Fri Jun 28, 2019 6:52 pm

Sakaki has done all of this alone.
So i t's not Raspbian then !
PeterO
by PeterO
Fri Jun 28, 2019 6:36 pm
Forum: General discussion
Topic: Raspbian Buster - 64 bit?!
Replies: 9
Views: 612

Re: Raspbian Buster - 64 bit?!

Heater wrote:
Fri Jun 28, 2019 6:35 pm
There is no 64 bit Raspbian release as yet.

I read here today that it is under development.
I find that highly unlikely !
PeterO
by PeterO
Fri Jun 28, 2019 5:28 pm
Forum: General discussion
Topic: Back in stock at The PiHut
Replies: 25
Views: 1041

Re: Thread from Pi4 discussion

I can't get their website to show me anything other than the 1GB version :( Here it is? https://thepihut.com/collections/raspberry-pi-store/products/raspberry-pi-4-model-b?variant=20064052740158 Yes, that is the page I was looking at. It only gives me the £34 1GB option. What does this have to do w...
by PeterO
Fri Jun 28, 2019 5:17 pm
Forum: Raspbian
Topic: Buster bug report thread
Replies: 113
Views: 8377

Re: Buster bug report thread

When booting a twin headed setup, it seems sensitive to both monitors being powered up (i.e. not in stand-by/sleep mode) If HDMI-1's monitor is sleeping then no video is seen on HDMI-0's monitor. I don't know if linux has started or not. Next time it happens I'll try pinging it from another machine....
by PeterO
Fri Jun 28, 2019 1:45 pm
Forum: OpenGLES
Topic: Thread from Pi4 discussion
Replies: 80
Views: 4424

Re: Thread from Pi4 discussion

dom wrote:
Fri Jun 28, 2019 1:37 pm

But a simpler source might be kmscube.
Note: You need to run with /dev/dri/card1 as device. e.g.

Code: Select all

kmscube -D /dev/dri/card1 
I've bookmarked that for definite future investigation :-)
PeterO
by PeterO
Fri Jun 28, 2019 11:38 am
Forum: OpenGLES
Topic: Thread from Pi4 discussion
Replies: 80
Views: 4424

Re: Thread from Pi4 discussion

by PeterO
Fri Jun 28, 2019 11:26 am
Forum: Raspbian
Topic: Raspbian 'Buster' 2019-06-20 / 07-10
Replies: 108
Views: 12214

Re: Raspbian 'Buster' 2019-06-20 BUG

I just updated the OS and I am another user that will miss multiple desktops a lot. In my opinion it allows to nicely separate applications especially when you work on a single screen. I hope there will be a solution or my productivity will be much lower with RPI. Despite "We don't support multiple...
by PeterO
Fri Jun 28, 2019 10:08 am
Forum: General discussion
Topic: Different logos on boxes.
Replies: 1
Views: 168

Different logos on boxes.

If you look at this picture you'll see that the 1,2,4Gb boxes are all slightly different.
https://www.facebook.com/photo.php?fbid ... ater&ifg=1
Why ?
Are their different supply chains for each size ?
PeterO

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