You don't need to use libpng to load a 24 bit image. Just set the bitmap option to specify you want higher bit depth when loading it.
On Fri, May 13, 2011 at 8:16 AM, cg-dev <[email protected]>wrote: > Hi, > > I face the same issue with OpenGL texture. I use gradient texture and > this one was "damaged" due to > convertion from 24bit => 565. > > To solve this issue I embeded libpng in my application using NDK. > > You said that "the screen is 565 so we loose precision" : Yes but in > OpenGL, > glEnable(GL_DITHER) will dither the colors. So(in that case) why doing > OpenGL job ? > Colors convertion should be done by the final renderer : "it" is the > only one to know the final screen > config. > > I think this image convertion at loading should be optional. Because > it depends in which context > you use it. > > Finally, with the dither I don't have "color steps" due to > downsampling. > > Best Regards > > On 3 mai, 00:27, Dianne Hackborn <[email protected]> wrote: > > If the issue is losing precision due to a 16bpp screen with 565 colors, > > changing it to 256 colors won't necessarily help since each of those > colors > > are still full 888. > > > > On Mon, May 2, 2011 at 2:52 PM, Andrew Huang <[email protected]> > wrote: > > > Another way is to make your images have 256 color at most. You can do > > > this in Gimp by changing the mode to indexed in the image menu, and > > > setting the maximum color. > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Android Developers" group. > > > To post to this group, send email to > [email protected] > > > To unsubscribe from this group, send email to > > > [email protected] > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=en > > > > -- > > Dianne Hackborn > > Android framework engineer > > [email protected] > > > > Note: please don't send private questions to me, as I don't have time to > > provide private support, and so won't reply to such e-mails. All such > > questions should be posted on public forums, where I and others can see > and > > answer them. > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Dianne Hackborn Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
