EGL_HI_clientpixmap https://www.khronos.org/registry/egl/specs/eglspec.1.5.pdf EGL_HI_clientpixmap EGL_CLIENT_PIXMAP_POINTER_HI 0x8F74 EGLSurface eglCreatePixmapSurfaceHI (EGLDisplay dpy, EGLConfig config, struct EGLClientPixmapHI * pixmap)