if (VERBOSE) System.err.println("JoglPipeline.executeRasterDepth()");
GLContext context = context(ctx);
GL2 gl = context.getGL().getGL2();
gl.glRasterPos3f(posX, posY, posZ);
int[] drawBuf = new int[1];
gl.glGetIntegerv(GL2.GL_DRAW_BUFFER, drawBuf, 0);
/* disable draw buffer */
gl.glDrawBuffer(GL.GL_NONE);