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Re: Face of Qt 6
Just can't stay away
Joined:
2007/7/14 21:30
From Lothric
Posts: 1349
@alfkil

Sounds like framebuffer objects?

There is an open Nova issue regarding floating point texture format and I couldn't get glReadPixels to work with FBOs but maybe you don't need these features?

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Re: Face of Qt 6
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@Capehill

Actually I was thinking about loading a Bitmap as a texure and use it for rendering, but obviously I can grab it to memory and read from there. I was just wondering, if there was a more direct approach.

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Re: Qt 6 progress
Home away from home
Joined:
2007/9/11 12:31
From Russia
Posts: 7054
@alfkkil
I asked Daniel about (who wrote ogles2.library for us), and that what he say:

Quote:

If you just wants to load and draw bitmaps he should stick with the normal AOS4 graphics functions (maybe compositing if he wants to have filtered scaling), there's no benefit of using ogles2 here.

If you want to use ogles2 to speed up the drawing of certain bitmaps inside an otherwise "normal" Amiga UI, then unless you wants to do so to also do some nifty effects on the GPU like blurring or whatsoever I don't see any benefit over traditional offscreen bitmaps and std. blitting.


Hope it helps

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Re: Qt 6 progress
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@kas1e

Thanks. I was looking for an easy workaround to a problem I'm facing getting Qt to write GL and non-GL graphics to the same frame. I have another possible solution, so I'll be allright.

BUT. I have another question. There is the concept of a shared context, and as far as my research goes, they seem to have this function :

Quote:
When a group of contexts share data, objects created by glCreateShader, glCreateProgram, glGenTextures, or glGenBuffers are shared across all contexts in the group. This doesn’t apply to all object types, only those with what OpenGL considers “data” (as opposed to “state”). “Container” objects (e.g. VAOs and FBOs) aren’t themselves shared, even if the contained objects (VBOs and textures/renderbuffers) are. When an object is shared, both its data and state are shared; e.g. for a texture, both the pixel arrays (glTexImage) and the parameters (glTexParameter) are shared.


This seems to be impossible for ogles2.library contexts, and this poses a problem for QOpenGLWidget compatibility. Suggestions?

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Re: Qt 6 progress
Home away from home
Joined:
2007/9/11 12:31
From Russia
Posts: 7054
@alfkil
All contexts which you create via lib_iface_gl->aglCreateContext2 should be able to share the same objects (textures, shaders, shader-progs) if they are created using the same interface lib_iface_gl

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Re: Qt 6 progress
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@kas1e

Ok. Good to know. Then the problem must be something else. I have a context crash at exit, and it goes away when I reduce the number of contexts to 1.

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Re: Qt 6 progress
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Joined:
2007/7/14 21:30
From Lothric
Posts: 1349
@alfkil

I have reproduced a crash issue when creating 2 OpenGL contexts and destroying them at the exit.

If I can make a smaller example I will post a bug report to Mantis. Not sure if it's an OGLES2 / Nova issue.

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Re: Qt 6 progress
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@Capehill :

Thanks for the info. I will treat it as an issue to be solved elsewhere.

And Sorry guys for the delay. I must admit, that banging my head against the crash issue, that Cape hill talks about took some of my power. Well, here's a show of the current state of functioning:

Qt 6 QOpenGLWidget

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Re: Qt 6 progress
Just can't stay away
Joined:
2007/7/14 21:30
From Lothric
Posts: 1349

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Re: Qt 6 progress
Not too shy to talk
Joined:
2007/1/6 5:59
Posts: 379
Are you going to limit this Radeon HD cards only??

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Re: Qt 6 progress
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@utri007

GLES2 is the minimum requirement for Qt6. I am not going to rebuild Qt to make it work for MiniGL only systems. This is simply too steep a challenge.

On the other hand, most functions will work with all systems, as long as the application doesn't use QOpenGLWindow and QOpenGLWidget. In fact, the port is so simple put together, that it would probably work on OS3 with very little modification. Could be interresting to see, if someone is up for THAT challenge... ;)

@Capehill

Thanks!

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Re: Qt 6 progress
Site Builder
Joined:
2006/12/2 23:57
From Athens/Dublin
Posts: 985
@alfkil
When Qt6 will be ready, it will be released free of charge? Are you funded by anyone? How can we donate?

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Re: Qt 6 progress
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@walkero

Well... I have put an awefull lot of work into it already, and what I have now is actually quite finished except for a few things. I think Qt license allows me to charge for use of my software, as long as I leave the sources open (they are already available). My gut is always to just give away in the hope of someone gaining happiness from usage in the other end. But maybe I would increase value by adding a small fee?

I would probably just want to ask people around here : Do you prefer a free product and possibility of donating by heart, or do you want me to set up something on AmiStore or elsewhere? I would probably feel best about doing, what the community wants and not be too creative. My feeling is, that people are more than happy to donate responsibly, so maybe that is my first choice.

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Re: Qt 6 progress
Home away from home
Joined:
2006/12/2 3:55
From Italy, Perugia
Posts: 3433
@alfkil

First of all congrats and welcome back!
Now questions

Did you was able to reuse atleast some part of the old code from the the previous QT 4.7 port... or you rewrite everything from scratch?
I hope you was, at least in part giving all the huge work and the accurate months of betatesting we did
The old project was almost fully functional and completed except a few things... it would be sad to restart testing everything, rethink solutions for problems already solved at the time etc

Aniway, about the licence, giving the nature of the project I believe it could be better to release it freely (but accept donations) as you did with the old 4.7 port

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Re: Qt 6 progress
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@samo79

Hi Samo79! Good to see you again.

I did a little bit of copy pasting for the input functions, but apart from that everything is organized completely different in the newest version, and there is very little possibility of reuse. But that is not necessarily bad, since the new organization of the platform dependent code makes it much, much easier to direct the inputs and ouputs necessary for platform function.

I think I will just open my PayPal account for donations. It is located at alfkil@gmail.com.

If someone wants to test the current state, I am going to post a build manual soon on the git page. It would be good to see someone else than me build the code, so it doesn't get lost in case, you know...

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Re: Qt 6 progress
Just popping in
Joined:
2020/11/17 12:08
From Slough
Posts: 209
Seen on Twitter "btw, someone who cares about big endian systems should look into fixing qt6-shadertools, as with current qt 6.2.0 at least qt6-quick and qt6-declarative fail to build (shader compilation crashes)

if this is not fixed, it will likely result in stuff disappearing as it migrates"

https://twitter.com/octaforge/status/1445455054668898311

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Re: Qt 6 progress
Site Builder
Joined:
2006/12/2 23:57
From Athens/Dublin
Posts: 985
@alfkil
I'd like to let you know that today, me and my supporters at ko-fi, donated to your WIP port of Qt6. The donation is currently in pending status. I believe after a few days you will be able to see that money coming your way.

If anyone needs more information about that donation, please read https://ko-fi.com/post/Today-we-donate-to-2-projects-K3K26J9XT.

I'd like to thank all of my supporters for that. Without them this would not be possible.

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Re: Qt 6 progress
Amigans Defender
Joined:
2006/12/2 13:27
From Taranto, Italy
Posts: 974
Donated!

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Re: Qt 6 progress
Just can't stay away
Joined:
2009/10/7 1:11
From Copenhagen
Posts: 1258
@walkero

Thanks for the support! This means a lot, and I am happy to let you know, that I will work hard to make a finalized project.

At the moment I have been waiting in vain for a piece of equipment, that was sent to the wrong address. This gadget is a donation from Bill Borsari, and I have been trippin' to get it home. I will go buy one soon from a regular Danish store. The plan is to do a streaming event on Twitch. Here I will show, what I have been working on with the Qt port and maybe play some music. It will take a few weeks, before I can set it up, because I am busy elsewhere. Also there is AmiWest, so I'd better wait not to be streamed all away :).

Thanks for the support, guys. It is quite exiting stuff, and I will make sure to take the beast home in a comfortable manner.

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Re: Qt 6 progress
Quite a regular
Joined:
2009/3/10 10:51
From Germany
Posts: 638
Donation sent.

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