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In this Discussion
iOS, transparent PNGs rendering bug and Gideros 2.0.0a1
ianchia
Member
Hello @atilim - I was a little surprised when I tried out the 2.0 alpha 1 and the bird sample showed that transparent edges around the birds weren't being rendered under iOS. (ie. all the birds have big black boxes as their background). I've tried under iOS6 and iOS7, iPhone and iPad and Xcode simulator, all with the same results. I assume this is a known issue? I had expected feature parity for rendering on iOS & Android for the first 2.0 alpha (the supplied video on the blog post has the birds rendering correctly under Android.)
A question about GLSL shaders. Off the top of your head, is it fairly tricky or simple for developers to port Flash Player Pixel Bender shaders to GLSL? I've done some minor research and it seems fairly trivial to translate the byte code, but I'm more interested in personally porting the higher level language into GLSL. Here are a couple of sample for you to browse through if you have time.
TV-scanlines:
http://www.mikechambers.com/blog/2008/09/17/pixel-bender-tv-scanline-filter/
Circular pattern:
http://pixelero.wordpress.com/2011/05/02/pixel-bender-circle-pattern/
Pixel bender shader source:
http://www.petrileskinen.fi//Actionscript/CirclePattern/bin-release/srcview/source/assets/CirclePattern.pbk
Thank you for your time.
Best,
- Ian
A question about GLSL shaders. Off the top of your head, is it fairly tricky or simple for developers to port Flash Player Pixel Bender shaders to GLSL? I've done some minor research and it seems fairly trivial to translate the byte code, but I'm more interested in personally porting the higher level language into GLSL. Here are a couple of sample for you to browse through if you have time.
TV-scanlines:
http://www.mikechambers.com/blog/2008/09/17/pixel-bender-tv-scanline-filter/
Circular pattern:
http://pixelero.wordpress.com/2011/05/02/pixel-bender-circle-pattern/
Pixel bender shader source:
http://www.petrileskinen.fi//Actionscript/CirclePattern/bin-release/srcview/source/assets/CirclePattern.pbk
Thank you for your time.
Best,
- Ian
Comments
And about the glsl, the concept seems to be similar but different language, and currently I'm not aware of automatic translation, maybe @atilim knows something
iPhone 3GS iOS 6.1.3
iPhone 4S iOS7.0
iPhone 5 iOS7.0
iPad Mini iOS6.1.3
iPad Gen 2 iOS 7.0
iPad Gen 4 iOS 7.0
iPhone Simulator iOS 7.0
iPad Simulator iOS 7.0
I opened the sample bird project from github, exported it using Gideros 2.0.0a1 and compiled it under Xcode 5. Attached is a sample screenshot showing the bug.
Regarding glsl, I wasn't so interested in automatic translation but more of a general "how different are the languages", since I'm not very familiar with either.
Thank you!
Best,
- Ian