/**
* 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;
}
public static void main(String[] args) {
final Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Composite comp = new Composite(shell, SWT.NONE);
comp.setLayout(new FillLayout());
GLData data = new GLData();
data.doubleBuffer = true;
final GLCanvas canvas = new GLCanvas(comp, SWT.NONE, data);
canvas.setCurrent();
try {
GLContext.useContext(canvas);
} catch (LWJGLException e) {
e.printStackTrace();
}
canvas.addListener(
SWT.Resize,
event -> {
Rectangle bounds = canvas.getBounds();
float fAspect = (float) bounds.width / (float) bounds.height;
canvas.setCurrent();
try {
GLContext.useContext(canvas);
} catch (LWJGLException e) {
e.printStackTrace();
}
GL11.glViewport(0, 0, bounds.width, bounds.height);
GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();
GLU.gluPerspective(45.0f, fAspect, 0.5f, 400.0f);
GL11.glMatrixMode(GL11.GL_MODELVIEW);
GL11.glLoadIdentity();
});
GL11.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
GL11.glColor3f(1.0f, 0.0f, 0.0f);
GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST);
GL11.glClearDepth(1.0);
GL11.glLineWidth(2);
GL11.glEnable(GL11.GL_DEPTH_TEST);
shell.setText("SWT/LWJGL Example");
shell.setSize(640, 480);
shell.open();
final Runnable run =
new Runnable() {
int rot = 0;
@Override
public void run() {
if (!canvas.isDisposed()) {
canvas.setCurrent();
try {
GLContext.useContext(canvas);
} catch (LWJGLException e) {
e.printStackTrace();
}
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
GL11.glClearColor(.3f, .5f, .8f, 1.0f);
GL11.glLoadIdentity();
GL11.glTranslatef(0.0f, 0.0f, -10.0f);
float frot = rot;
GL11.glRotatef(0.15f * rot, 2.0f * frot, 10.0f * frot, 1.0f);
GL11.glRotatef(0.3f * rot, 3.0f * frot, 1.0f * frot, 1.0f);
rot++;
GL11.glPolygonMode(GL11.GL_FRONT_AND_BACK, GL11.GL_LINE);
GL11.glColor3f(0.9f, 0.9f, 0.9f);
drawTorus(1, 1.9f + ((float) Math.sin((0.004f * frot))), 15, 15);
canvas.swapBuffers();
display.asyncExec(this);
}
}
};
canvas.addListener(SWT.Paint, event -> run.run());
display.asyncExec(run);
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
display.dispose();
}