public static final GL2 getCurrentGL2() throws GLException {
GLContext curContext = GLContext.getCurrent();
if (curContext == null) {
throw new GLException("No OpenGL context current on this thread");
}
return curContext.getGL().getGL2();
}
private static final GLUgl2ProcAddressTable getGLUProcAddressTable() {
if (gluProcAddressTable == null) {
GLContext curContext = GLContext.getCurrent();
if (curContext == null) {
throw new GLException("No OpenGL context current on this thread");
}
GLDynamicLookupHelper glLookupHelper =
((GLContextImpl) curContext).getGLDynamicLookupHelper();
glLookupHelper.loadGLULibrary();
GLUgl2ProcAddressTable tmp = new GLUgl2ProcAddressTable(new GLProcAddressResolver());
tmp.reset(glLookupHelper);
gluProcAddressTable = tmp;
}
return gluProcAddressTable;
}
public void surfaceUpdated(Object updater, NativeWindow window, long when) {
if (updater instanceof GLDrawable) {
GLDrawable drawable = (GLDrawable) updater;
GLContext ctx = GLContext.getCurrent();
if (null != ctx && ctx.getGLDrawable() == drawable) {
GL gl = ctx.getGL();
// FIXME glFinish() is an expensive paranoia sync, should not be necessary due to spec
gl.glFinish();
readBufferUtil.fetchOffscreenTexture(drawable, gl);
gl.glFinish();
try {
surface2File("shot");
} catch (IOException ex) {
throw new RuntimeException("can not write survace to file", ex);
}
}
}
}
public void applyInternalTransform(DrawContext dc) {
if (dc == null) {
String message = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(message);
throw new IllegalStateException(message);
}
Texture texture = this.getTexture(dc);
if (texture == null) texture = this.requestTexture(dc);
if (texture == null) return;
if (texture.getMustFlipVertically()) {
GL gl = GLContext.getCurrent().getGL();
gl.glMatrixMode(GL.GL_TEXTURE);
gl.glLoadIdentity();
gl.glScaled(1, -1, 1);
gl.glTranslated(0, -1, 0);
}
}
