Comments on: Android OpenGL ES – Mipmaps http://insanitydesign.com/wp/2009/08/01/android-opengl-es-mipmaps/ The Imagination Enhancer Mon, 30 Aug 2010 02:37:59 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: NeA http://insanitydesign.com/wp/2009/08/01/android-opengl-es-mipmaps/comment-page-1/#comment-1650 NeA Fri, 30 Jul 2010 11:59:13 +0000 http://insanitydesign.com/wp/?p=128#comment-1650 Hi there The thing with the squares comes with MipMaps in general: If you have a look at http://en.wikipedia.org/wiki/Mipmapping a MipMap source has to be square. I do not know if there are any specifics how to "fake" something else, but this is how I learned and know it. Regarding the GL11 problem: Good to know. Still hanging on my Magic ^^' But I already noticed that there are far too many differences in between the different Android Phones as there should be. Regards Hi there

The thing with the squares comes with MipMaps in general: If you have a look at http://en.wikipedia.org/wiki/Mipmapping a MipMap source has to be square. I do not know if there are any specifics how to “fake” something else, but this is how I learned and know it.

Regarding the GL11 problem: Good to know. Still hanging on my Magic ^^’ But I already noticed that there are far too many differences in between the different Android Phones as there should be.

Regards

]]> By: Jeremy Statz http://insanitydesign.com/wp/2009/08/01/android-opengl-es-mipmaps/comment-page-1/#comment-1645 Jeremy Statz Mon, 26 Jul 2010 11:11:19 +0000 http://insanitydesign.com/wp/?p=128#comment-1645 Hey there sir, I'm trying to solve a similar problem and was trying to make use of your buildMipMap function. It seems to work, but only for textures that are square. I've been trying to work out why this is but keep getting black for anything non-square. do you know why this is? Do I need to ditch Bitmap as well? I know it incorrectly premultiplies the alpha channel, so maybe that's for the best anyway. Oddly enough, the reason I'm trying to do this is because the test for GL11 isn't reliable. The HTC Eris and Hero, for example, will report a GL11 instance but will not generate mipmaps correctly. At this point I'm hoping to remove all reliance on the auto-generated mipmaps. :/ Hey there sir, I’m trying to solve a similar problem and was trying to make use of your buildMipMap function. It seems to work, but only for textures that are square. I’ve been trying to work out why this is but keep getting black for anything non-square. do you know why this is? Do I need to ditch Bitmap as well? I know it incorrectly premultiplies the alpha channel, so maybe that’s for the best anyway.

Oddly enough, the reason I’m trying to do this is because the test for GL11 isn’t reliable. The HTC Eris and Hero, for example, will report a GL11 instance but will not generate mipmaps correctly. At this point I’m hoping to remove all reliance on the auto-generated mipmaps. :/

]]> By: Android OpenGL ES – Mipmaps | Adobe Tutorials http://insanitydesign.com/wp/2009/08/01/android-opengl-es-mipmaps/comment-page-1/#comment-1397 Android OpenGL ES – Mipmaps | Adobe Tutorials Sun, 02 Aug 2009 03:43:57 +0000 http://insanitydesign.com/wp/?p=128#comment-1397 [...] I am currently a little bit experimenting with Android and its SDK as I am proud owner of a HTC Magic as well as I am pretty impressed by the SDK, Android itself and the ideas and principles it follows. More precisely I am playing around with the graphical functionalities of Android, especially OpenGL . Read the rest here: Android OpenGL ES – Mipmaps [...] [...] I am currently a little bit experimenting with Android and its SDK as I am proud owner of a HTC Magic as well as I am pretty impressed by the SDK, Android itself and the ideas and principles it follows. More precisely I am playing around with the graphical functionalities of Android, especially OpenGL . Read the rest here: Android OpenGL ES – Mipmaps [...]

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