/**
* Returns a GLData object describing the created context.
*
* @return GLData description of the OpenGL context attributes
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public GLData getGLData() {
checkWidget();
int /*long*/ window = OS.GTK_WIDGET_WINDOW(handle);
int /*long*/ xDisplay = OS.gdk_x11_drawable_get_xdisplay(window);
GLData data = new GLData();
int[] value = new int[1];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_DOUBLEBUFFER, value);
data.doubleBuffer = value[0] != 0;
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_STEREO, value);
data.stereo = value[0] != 0;
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_RED_SIZE, value);
data.redSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_GREEN_SIZE, value);
data.greenSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_BLUE_SIZE, value);
data.blueSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_ALPHA_SIZE, value);
data.alphaSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_DEPTH_SIZE, value);
data.depthSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_STENCIL_SIZE, value);
data.stencilSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_ACCUM_RED_SIZE, value);
data.accumRedSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_ACCUM_GREEN_SIZE, value);
data.accumGreenSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_ACCUM_BLUE_SIZE, value);
data.accumBlueSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_ACCUM_ALPHA_SIZE, value);
data.accumAlphaSize = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_SAMPLE_BUFFERS, value);
data.sampleBuffers = value[0];
GLX.glXGetConfig(xDisplay, vinfo, GLX.GLX_SAMPLES, value);
data.samples = value[0];
return data;
}
