private static List<GLCapabilitiesImmutable> getAvailableEGLConfigs(
EGLGraphicsDevice eglDisplay, GLCapabilitiesImmutable caps) {
final IntBuffer numConfigs = Buffers.newDirectIntBuffer(1);
if (!EGL.eglGetConfigs(eglDisplay.getHandle(), null, 0, numConfigs)) {
throw new GLException(
"EGLDrawableFactory.getAvailableEGLConfigs: Get maxConfigs (eglGetConfigs) call failed, error "
+ EGLContext.toHexString(EGL.eglGetError()));
}
if (0 < numConfigs.get(0)) {
final PointerBuffer configs = PointerBuffer.allocateDirect(numConfigs.get(0));
final IntBuffer attrs = EGLGraphicsConfiguration.GLCapabilities2AttribList(caps);
final int winattrmask = GLGraphicsConfigurationUtil.getExclusiveWinAttributeBits(caps);
if (EGL.eglChooseConfig(
eglDisplay.getHandle(), attrs, configs, configs.capacity(), numConfigs)
&& numConfigs.get(0) > 0) {
return EGLGraphicsConfigurationFactory.eglConfigs2GLCaps(
eglDisplay,
caps.getGLProfile(),
configs,
numConfigs.get(0),
winattrmask,
false /* forceTransparentFlag */);
}
}
return new ArrayList<GLCapabilitiesImmutable>(0);
}
/**
* @param capsRequested
* @param absScreen
* @param eglConfigID {@link EGL#EGL_CONFIG_ID} for which the config is being created for.
* @return
* @throws GLException if invalid EGL display.
*/
public static EGLGraphicsConfiguration create(
GLCapabilitiesImmutable capsRequested, AbstractGraphicsScreen absScreen, int eglConfigID) {
final AbstractGraphicsDevice absDevice = absScreen.getDevice();
if (null == absDevice || !(absDevice instanceof EGLGraphicsDevice)) {
throw new GLException("GraphicsDevice must be a valid EGLGraphicsDevice");
}
final long dpy = absDevice.getHandle();
if (dpy == EGL.EGL_NO_DISPLAY) {
throw new GLException("Invalid EGL display: " + absDevice);
}
final long cfg = EGLConfigId2EGLConfig(dpy, eglConfigID);
if (0 < cfg) {
final GLRendererQuirks defaultQuirks =
GLRendererQuirks.getStickyDeviceQuirks(
GLDrawableFactory.getEGLFactory().getDefaultDevice());
final int winattrmask =
GLGraphicsConfigurationUtil.getExclusiveWinAttributeBits(capsRequested);
final EGLGLCapabilities caps =
EGLConfig2Capabilities(
defaultQuirks,
(EGLGraphicsDevice) absDevice,
capsRequested.getGLProfile(),
cfg,
winattrmask,
false);
return new EGLGraphicsConfiguration(
absScreen, caps, capsRequested, new DefaultGLCapabilitiesChooser());
}
return null;
}