Unfortunately, OpenGL in SWT does not yet support multisampling. Although the org.eclipse.swt.opengl.GLData class contains samples and sampleBuffers fields, they are not currently used in the org.eclipse.swt.opengl.GLCanvas class. The following code is from the GLCanvas:
//FIXME - use wglChoosePixelFormatARB // if (data.sampleBuffers > 0) { // wglAttrib [pos++] = WGL.WGL_SAMPLE_BUFFERS_ARB; // wglAttrib [pos++] = data.sampleBuffers; // } // if (data.samples > 0) { // wglAttrib [pos++] = WGL.WGL_SAMPLES_ARB; // wglAttrib [pos++] = data.samples; // }