iPhone OpenGL Demo

UPDATE 20100102: As there seem to appear some unsatisfied fuckup-folks, read this first:

• code is provided AS IS, no warranties
• got no time to sort things out? don’t lose your time checking out the code then
• lazy enough/looser-programmer and looking for spoon-feeding solutions only? don’t lose your time checking out the code then
• don’t like my code? write better one instead and let me see you give it for free before you comment
• for those whoever is “fuck you"-ing me for whatever frustration reason they got - you are free to leave the blog - this blog is not for you

UPDATE 20090921: ZIP with sources is NOT corrupted. Please use 7-Zip archiver (ver >= 1.59)

UPDATE: Sources iPhone OpenGL ES Cube 3D with texture (Some reported archive corruption. Seems to work well with 7-Zip 4.5x, 4.6x for Windows)

This is a demo video showing my humble achievements in the direction of OpenGL ES 1.1 for iPhone, using some texture and light experiments. It is of course not intended as a working program, it’s rather a demo concept snippet of code.

The binary:
- source written in objective-c
- compiled as native application with iPhone toolchain under cygwin
- ran on iPhone 1.1.2 OOB

The acknowledgements go to:
- AJW - for great iPhone OpenGL startups
- ZeusCMD - for great OpenGL ES tutorials
- nullriver - for posts and links

Here is the binary available for download:
iPhone OpenGL ES Demo binary

Instructions:
- GLTextureCube to be put into /Applications and given proper permissions (755 to dirs and files will suffice)
- zveriu.raw to be put into /private/var and given at least read permission (444 will suffice)
- you can replace zveriu.raw with your own image data, given you follow the constraints:
– 128 by 128 pixel - sorry, had to hard-code to speed-up the working demo
– raw data, i.e. no headers, compression, etc -
– 1 (one) byte per color, color scheme RGB
– basically it is a 24bit BMP, with no header, just raw data
_________
- to obtain such a raw file, you can:
– get a 128 by 128 24 bits BMP file with your texture
– open it with IrfanView
– make sure you have IrfanView plugin named Formats
– save as the BMP with RAW file type, instructing irfan view to make it 24 bits RGB (not BGR!) and interleaved, meaning bytes follow as RGBRGB…RGBRGB and not RRRRRR…GGGGGG…BBBBBB
_________
- basically, to check that zveriu.raw (case sensitive!) you have created is right, file size should be 128 (width) * 128 (height) * 3 (bytes for RGB ) = 49152 bytes exactly

Hope you enjoyed this post.

I have some more ideas to test on iPhone - hope to overcome all the limitations (including time-constraint ). And by the way - the USRP is solved, need to get GNUradio working on one of the boxes (cygwin refuses to get me wxPython right for GNUradio - will stick to Ubuntu for the moment!)

Tags: iPhone OpenGL OpenGL ES OpenGLES Demo Cube Cube3D Texture USRP GNUradio