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(); }
/** * 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; }