New version: Gideros 2014.10

SinisterSoft

The Raspberry Pi 2 was launched today, it is now quad core and 900Mhz rather than 700Mhz (but every one overclocked anyway!). It should be nippier but for single thread apps it should be about 1.5x faster - ish.

It uses the same gfx chip, so that is about the same speed as a Mali 400.

I think it would be a good idea to make Gideros work on the older Pi first as these are still being produced.

john26

Agreed! Plus I own an old Pi (model B+) and don't want to buy another one atm!

I was thinking of using the simple Xlib library to handle OS events and do basic drawing. I think this is present in all versions of Linux?

This is something I need to ask about Linux, is the windows API (Xlib) common to all Linux versions? Does it depend on whether we use GNOME etc?

SinisterSoft

I know someone who has been coding in Linux for a long time, I'll message them on facebook for you.

SinisterSoft

Got a reply:

"Xlib is part of X11 which is common on most desktop based linux systems including those running Gnome or KDE. If you are using a linux server then it may be running in headless mode (no monitor) so Xlib wouldn't normally be installed. However not all Linux Systems use Xlib - e.g. Android devices are Linux based yet they don't use X11 wouldn't have Xlib,"

john26

Thanks very much! I would prefer to use the lowest level of interaction (which I think is Xlib) rather than a widget toolkit in the first instance. I know Linux programmers tend to use toolkits but I do not need menus, buttons etc just an OpenGL context to draw on.

SinisterSoft

The person I asked btw was David Firth - in emulator 'circles' he is quite famous as he wrote the original Atari 800 emulator about 20 years ago. I've known him for about 30 years - he knows his stuff.

ar2rsawseen

@john26 wouldn't the right way be, to check if QT could support it.
I know QT supports linux, don't know about arm processor though.
http://doc.qt.io/qt-5/linux.html

But if it does, there would little or no code to rewrite, only correctly manage dependencies.

ar2rsawseen

Ah, here we go:
http://qt-project.org/wiki/Qt-RaspberryPi

SinisterSoft

I think the blog needs updating btw about the Kickstarter, x64 well on the way, etc...

john26

@ar2rsawseen, thanks didn't realise QT was on the pi. Will try to use it. But also it might be nice to have a stand alone player based on Xlib directly just to play the games. After all, pi is not very fast.

zimarrio

Hi,
I didn't understand the solution for gideros player not working on Yosemite.
I get this error on all projects:
Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libjpeg.8.dylib 0x000000000152853f jpeg_std_error + 107
1 libgid.1.dylib 0x000000000004e965 gimage_parseJpg + 85

Works perfectly on windows 8.1.

john26

Thanks for this info. The bug is clearly related to reading in jpeg files. We will investigate further...

MikeHart

Thanks for this info. The bug is clearly related to reading in jpeg files. We will investigate further...

I get this:

Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000   Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libpng16.16.dylib 0x00000000014edf98 0x14ec000 + 8088 1 libpng16.16.dylib 0x00000000014f58e8 png_create_read_struct_2 + 19 2 libpng16.16.dylib 0x00000000014f58cf png_create_read_struct + 27 3 libgid.1.dylib 0x0000000000052592 gimage_parsePng + 178

So it isn't related to JPegs alone.

zimarrio

So it isn't related to JPegs alone.

It's true, I also get this error with pngs. The android player works well through Yosemite, though.

sieler

I just upgraded (or, for me, downgraded, since I reallly like Snow Leopard) from Snow Leopard to Yosemite ...

Grabbed fresh copy of Gideros (24.10) ... clicked on the "Bird Animation" sample app ...
player aborts:


Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libpng16.16.dylib 0x00000000014e8f98 png_sig_cmp + 932
1 libpng16.16.dylib 0x00000000014f08e8 png_create_read_struct_2 + 19
2 libpng16.16.dylib 0x00000000014f08cf png_create_read_struct + 27
3 libgid.1.dylib 0x000000000004e592 gimage_parsePng + 178
4 com.giderosmobile.Gideros Player 0x0000000100081d5c Dib::Dib(Application*, char const*, bool, bool, bool, unsigned int) + 396
5 com.giderosmobile.Gideros Player 0x000000010009eb83 TextureManager::createTextureFromFile(char const*, TextureParameters const&) + 627
6 com.giderosmobile.Gideros Player 0x000000010009e712 TextureBase::TextureBase(Application*, char const*, Filter, Wrap, Format, bool, unsigned int) + 114
7 com.giderosmobile.Gideros Player 0x000000010009e5b4 Texture::Texture(Application*, char const*, Filter, Wrap, Format, bool, unsigned int) + 36
8 com.giderosmobile.Gideros Player 0x000000010006f92e TextureBinder::create(lua_State*) + 766
...

Similarly, the "Button" example app crashes in same place.

A newly created app consisting of a single line: print ("hi")
will run ok.

ar2rsawseen

@sieler yes known bug, but unfortunately we still cant find the issue, tried other libpng version, tried linking to specific zlib version, nothing works.

For now, we are clueless, but on all dev machines Gideros work, so there must be something that is missing on newly installed Yosemites

ar2rsawseen

If, you are up to it, you can go through dependencies installing them one by one and checking if player runs now, would help us alot knowing what exactly breaking.

first you would need to install brew
http://brew.sh/

and the dependencies, one by one:

brew update
brew install jpeg
brew link --overwrite jpeg
brew install libpng
brew link --overwrite libpng
brew install freetype
brew install glew
brew install qt5

maybe it will help

zimarrio

@ar2sawseen, I did what you said with the dependencies one by one but it still doesn't work. Anything else we could do to try to find the issue?
Thanks

ar2rsawseen

@zimarrio will prepare another test app later today, but we are starting to run out of ideas

jdbc

@ar2sawseen, I have installed one by one dependencies using brew, but it still crashes.

hgy29

@jdbc, @zimarrio and @sieler, I will try to reproduce to issue on my Mac (upgrading to yosemite right now, 10hrs download left...). Meanwhile, is it possible to get a full register dump of the crash or a kind of 'coredump' ? This may help in understanding what gone wrong.
Ideally, a desassembly of the 3 or 4 latests stack frames would be helpful.

ar2rsawseen

@hgy29 I've created an issue here with all what I had
https://github.com/gideros/gideros/issues/13

zimarrio

@ar2rsawseen, I see you solved the issue >-
How can I get the updated version? Do I need to wait for the next release?

ar2rsawseen

@zimarrio
just try the latest release from github:

https://github.com/gideros/gideros/releases/tag/2015.03.05

zimarrio

@ar2rsawseen, thank you so much. Works great now! =D>