On Sun, Oct 24, 2010 at 7:59 PM, xiaoxiaomuyu <xiaoxiaomuyusajiangt...@gmail.com> wrote: > Thanks again. > > EGL: glx ----> what's it for? It is an EGL driver that does EGL-over-GLX. A call to eglMakeCurrent is translated to glXMakeCurrent, for example. It is almost always enabled (as libGL is almost always built). > EGL platforms: x11 drm ----> for nothing? Have to explicitly indicate > --with-egl-platforms=drm?? It means both x11 and drm platforms are supported and the native platform, the first one listed, is x11: EGLNativeDisplayType is assumed to be Display *. You may change the native platform at runtime by setting EGL_PLATFORM or at compile time by specifying --with-egl-platforms. > By the way, what's the difference among egl surfaces of pbuffer, screen, > window, bitmap? Screen surface is a surface from which a GPU can be programmed to scan out. It is defined by a Mesa extension. The others are the same as those in GLX. > > Cheers. >
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