OpenGL gradient banding on Android

Question

I\'ve got a live wallpaper out on the market which uses OpenGL to render some basic shapes and a flat plane. The simple lighting creates a gradient effect across the plane,

Answer 1

Looks like it really is the GS2's display, or more accurately, its dithering algorithm. I tried upping my requested config to RGB888, and this is what I get (from my test user's phone):

So it really seems like the GS2 just does a horrible job of dithering when trying to map colors in an 888 space to a 565 config.

Now I'm not sure if I want to up the config to 888 across all devices (better quality but a performance hit), or only on devices which I know to dither poorly. Hmmm.

Answer 2

Have you tried to disable dithering in GL? This might help a bit.

GLES20.glDisable(GLES20.GL_DITHER);

Answer 3

Can you confirm that, though you request 565, that you are, in fact, getting 565? There are EGL functions for confirming what you end up getting. I refer to checking on both devices since you might be getting 888 on the Incredible and other devices, hence the better-looking display.