/**
* Ensures the current EGL context is the one we expect.
*
* @return {@link #SURFACE_STATE_ERROR} if the correct EGL context cannot be made current,
* {@link #SURFACE_STATE_UPDATED} if the EGL context was changed or {@link
* #SURFACE_STATE_SUCCESS} if the EGL context was the correct one
*/
int checkCurrent() {
if (mEglThread != Thread.currentThread()) {
throw new IllegalStateException(
"Hardware acceleration can only be used with a "
+ "single UI thread.\nOriginal thread: "
+ mEglThread
+ "\n"
+ "Current thread: "
+ Thread.currentThread());
}
if (!mEglContext.equals(sEgl.eglGetCurrentContext())
|| !mEglSurface.equals(sEgl.eglGetCurrentSurface(EGL_DRAW))) {
if (!sEgl.eglMakeCurrent(sEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
Log.e(LOG_TAG, "eglMakeCurrent failed " + GLUtils.getEGLErrorString(sEgl.eglGetError()));
fallback(true);
return SURFACE_STATE_ERROR;
} else {
if (mUpdateDirtyRegions) {
enableDirtyRegions();
mUpdateDirtyRegions = false;
}
return SURFACE_STATE_UPDATED;
}
}
return SURFACE_STATE_SUCCESS;
}
public EGLSurface eglGetCurrentSurface(int readdraw) {
begin("eglGetCurrentSurface");
arg("readdraw", readdraw);
end();
EGLSurface result = mEgl10.eglGetCurrentSurface(readdraw);
returns(result);
checkError();
return result;
}
public void swapBuffers() {
EGL10 egl = (EGL10) EGLContext.getEGL();
EGLDisplay display = egl.eglGetCurrentDisplay();
EGLSurface surface = egl.eglGetCurrentSurface(EGL10.EGL_READ);
egl.eglSwapBuffers(display, surface);
}