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package jogamp.opengl.egl;
import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.ProxySurface;
import javax.media.nativewindow.UpstreamSurfaceHook;
import com.jogamp.nativewindow.UpstreamSurfaceHookMutableSize;
import com.jogamp.nativewindow.egl.EGLGraphicsDevice;
import com.jogamp.opengl.egl.EGL;
/** Uses a PBuffer offscreen surface */
public class EGLDummyUpstreamSurfaceHook extends UpstreamSurfaceHookMutableSize {
/**
* @param width the initial width as returned by {@link NativeSurface#getSurfaceWidth()} via {@link UpstreamSurfaceHook#getSurfaceWidth(ProxySurface)},
* not the actual dummy surface width.
* The latter is platform specific and small
* @param height the initial height as returned by {@link NativeSurface#getSurfaceHeight()} via {@link UpstreamSurfaceHook#getSurfaceHeight(ProxySurface)},
* not the actual dummy surface height,
* The latter is platform specific and small
*/
public EGLDummyUpstreamSurfaceHook(final int width, final int height) {
super(width, height);
}
@Override
public final void create(final ProxySurface s) {
final EGLGraphicsDevice eglDevice = (EGLGraphicsDevice) s.getGraphicsConfiguration().getScreen().getDevice();
eglDevice.lock();
try {
if(0 == eglDevice.getHandle()) {
eglDevice.open();
s.addUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_DEVICE );
}
if( EGL.EGL_NO_SURFACE == s.getSurfaceHandle() ) {
s.setSurfaceHandle( EGLDrawableFactory.createPBufferSurfaceImpl((EGLGraphicsConfiguration)s.getGraphicsConfiguration(), 64, 64, false) );
s.addUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_SURFACE );
}
s.addUpstreamOptionBits(ProxySurface.OPT_UPSTREAM_WINDOW_INVISIBLE);
} finally {
eglDevice.unlock();
}
}
@Override
public final void destroy(final ProxySurface s) {
if( s.containsUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_SURFACE ) ) {
final EGLGraphicsDevice eglDevice = (EGLGraphicsDevice) s.getGraphicsConfiguration().getScreen().getDevice();
if( EGL.EGL_NO_SURFACE == s.getSurfaceHandle() ) {
throw new InternalError("Owns upstream surface, but no EGL surface: "+s);
}
eglDevice.lock();
try {
EGL.eglDestroySurface(eglDevice.getHandle(), s.getSurfaceHandle());
s.setSurfaceHandle(EGL.EGL_NO_SURFACE);
s.clearUpstreamOptionBits( ProxySurface.OPT_PROXY_OWNS_UPSTREAM_SURFACE );
} finally {
eglDevice.unlock();
}
}
}
}
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