Hey everyone, I'm porting an OpenGL app from the iPhone to Android, and I need to render OpenGL content to a texture. Since framebuffers are not available in OpenGL 1.0 and the DROID is the only Android phone to support the framebuffer extension, I'm trying to draw using OpenGL and then copy the result into a texture using glCopyTexImage2D. However, my initial findings are not good:
1. glCopyTexImage2D works in the Android emulator (OS v. 1.5), but only with GL10.GL_RGB, not GL_RGBA. If you try to copy the alpha data from the scene into the texture, you just get a completely white texture. 2. glCopyTexImage2D doesn't seem to work _at all_ on the Android G1. It does not throw an UnsupportedOperationException but after calling it, the texture is completely white. Has anyone successfully used glCopyTexImage2D on an actual device? If so, could you please post a bit of the code you're using? I suspect it works only with specific settings, if at all. Right now, I'm calling it like this: gl.glCopyTexImage2D(GL10.GL_TEXTURE_2D, 0, GL11.GL_RGBA, 0,0, 256, 256, 0); -- 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
