Large images not loading,

Cyberience · May 2013

I am finding that images larger the 1024 width do no load, no error is reported, I tried changing the format from jpg to png and back, only if I crop the image down to less than 1024 it works, 1 pixel bigger and its a white screen.
Simple code. My image is 1920 x 767. I am attempting to have a scrolling back drop. a view of Hong Kong, but alas. my only work around is to make 2 images and nit them together. Is this a limitation, bug or feature? or have I missed somthing somewhere.

	local background = Bitmap.new(Texture.new("images/HongKong.jpg"))
	stage:addChild(background)

Regards
Cyber

Rickyngk · May 2013

I guess your problem is from OpenGL, which has limited maximum image size
For more detail:http://www.opengl.org/archives/resources/faq/technical/texture.htm
"21.130 What's the maximum size texture map my device will render hardware accelerated?"

Scouser · May 2013

@Cyberience: There are a few posts on this subject. This thread for instance states that older devices (both Apple & Android) have a maximum texture size of 1024x1024.

Cyberience · May 2013

Thanks for the heads, I didnt find those posts, though I did look. if the limit is in the hardware. Gideros IDE must have it implemented as a limitation to prevent overload, but then, how would we load a full size image for Retina Resolution?

ar2rsawseen · May 2013

Retina devices have larger limitations.

1024x1024 I think was a minimum to work on all devices. But newer devices can handle more, thus there can't be a limitation inside Gideros itself.

But you can use Gideros Auto Image resolution, which would load larger graphics on higher res devices automatically:
http://docs.giderosmobile.com/automatic_image_resolution.html

Cyberience · May 2013

I set the logical dimensions to Retina levels, but the image would not display, no error message either.

hgvyas123 · May 2013

not sure which device you are using but if it is iphone4 or 5 then you are fine with 1920 x 767 as they supports 2048x2048 can you also try with any other image which have same resolution may be image it self is problematic

Cyberience · May 2013

yep, tried that, still wouldn't load the image thats larger than 1024. I didn't try height though, as this is in landscape mode.
Have you actually tried it? would like to see if I got some settings mixed up!

hgvyas123 · May 2013

unfortunately i dont have iphone to test out but it seems like you have older device( ? ) if yes this is a limitation of device itself and no one can do anything for this

Cyberience · May 2013

I havent even tried it on a device yet, this is in the IDE.

ar2rsawseen · May 2013

@Cyberience, but computer has its own hardware limitations, on devices they can be completely different.

hgvyas123 · May 2013

so r u getting white rects in pc?

Cyberience · May 2013

yes in the PC. I havent tried on the mac though.

hgvyas123 · May 2013

in that case most likely you had not installed graphics driver or they are not compatible with your system try to update or install the graphics driver and the problem may get solved

Cyberience · May 2013

What graphics driver are you talking about? Have you managed to load a large image and display it? if so, share the image with me, then I can try from a working Prototype, if not, try it, and see if you get what I get, I just seem to get answers that done make sense without any real confirmation of it working or failing on someone else's system...
Ill give it a try on the Mac later.
The Image that doesnt display is attached....

ar2rsawseen · May 2013

@Cyberience here the test project attached
Basically it shows the image on any device I tested, laptop, PC, Ipad and even my very old Android phone (which I was surprised it showed the image)

hgvyas123 · May 2013

yup i can also see this image in my simulator in mac. i am saying to install graphics driver because long time ago (more than one year or even more

) when i was using corona in my pc i had got same problem if i remember correctly then every image is white for me regardless of its size and my solution was to install the graphics driver from cd which came with motherboard give it a try or definitely you are missing something in your pc and it is a not the problem of Gideros or your code btw i can bet it will works on mac as mac comes with every software pre installed

hgvyas123 · May 2013

@ar2rsawseen : see another reason why mac is good against pc

Cyberience · May 2013

yeh i Like the mac, ill dig deeper and see what I can find.

Cyberience · May 2013

Yep. Solved. Issue. Not exactly which Driver, I am guessing that the Graphics driver was it, I did a Windows update, and it fixed the problem. as a work around I knitted 2 halves together into a sprite and then used that for the full image. but now its solved.

hgvyas123 · May 2013

cool

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