public void initGLState() {
System.err.println("GL_VENDOR: " + glGetString(GL_VENDOR));
System.err.println("GL_RENDERER: " + glGetString(GL_RENDERER));
System.err.println("GL_VERSION: " + glGetString(GL_VERSION));
MemoryStack s = stackPush();
// setup ogl
glLightfv(GL_LIGHT0, GL_POSITION, s.floats(5.0f, 5.0f, 10.0f, 0.0f));
glEnable(GL_CULL_FACE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
/* make the gears */
gear1 = glGenLists(1);
glNewList(gear1, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, s.floats(0.8f, 0.1f, 0.0f, 1.0f));
gear(1.0f, 4.0f, 1.0f, 20, 0.7f);
glEndList();
gear2 = glGenLists(1);
glNewList(gear2, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, s.floats(0.0f, 0.8f, 0.2f, 1.0f));
gear(0.5f, 2.0f, 2.0f, 10, 0.7f);
glEndList();
gear3 = glGenLists(1);
glNewList(gear3, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, s.floats(0.2f, 0.2f, 1.0f, 1.0f));
gear(1.3f, 2.0f, 0.5f, 10, 0.7f);
glEndList();
s.pop();
glEnable(GL_NORMALIZE);
glMatrixMode(GL_PROJECTION);
float h = (float) 300 / (float) 300;
glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0f, 0.0f, -40.0f);
}
private static long getDevice(long platform, CLCapabilities platformCaps, int deviceType) {
MemoryStack stack = stackPush();
try {
IntBuffer pi = stack.mallocInt(1);
checkCLError(clGetDeviceIDs(platform, deviceType, null, pi));
PointerBuffer devices = stack.mallocPointer(pi.get(0));
checkCLError(clGetDeviceIDs(platform, deviceType, devices, null));
for (int i = 0; i < devices.capacity(); i++) {
long device = devices.get(i);
CLCapabilities caps = CL.createDeviceCapabilities(device, platformCaps);
if (!(caps.cl_khr_gl_sharing || caps.cl_APPLE_gl_sharing)) continue;
return device;
}
} finally {
stack.pop();
}
return NULL;
}