private void activate() {
if (_active == 0) {
try {
_oldContext = ContextManager.getCurrentContext();
_pbuffer.makeCurrent();
ContextManager.switchContext(_pbuffer);
ContextManager.getCurrentContext().clearEnforcedStates();
ContextManager.getCurrentContext().enforceStates(_enforcedStates);
if (_bgColorDirty) {
GL11.glClearColor(
_backgroundColor.getRed(),
_backgroundColor.getGreen(),
_backgroundColor.getBlue(),
_backgroundColor.getAlpha());
_bgColorDirty = false;
}
} catch (final LWJGLException e) {
logger.logp(Level.SEVERE, this.getClass().toString(), "activate()", "Exception", e);
throw new Ardor3dException();
}
}
_active++;
}
protected void runLoop() {
if (!created.get()) {
throw new IllegalStateException();
}
if (pbuffer.isBufferLost()) {
pbuffer.destroy();
try {
pbuffer = new Pbuffer(width, height, pixelFormat, null);
pbuffer.makeCurrent();
// Context MUST be reset here to avoid invalid objects!
renderer.invalidateState();
} catch (LWJGLException ex) {
listener.handleError("Failed to restore pbuffer content", ex);
}
}
listener.update();
checkGLError();
renderer.postFrame();
// Need to flush GL commands
// to see any result on the pbuffer's front buffer.
GL11.glFlush();
int frameRate = settings.getFrameRate();
if (frameRate >= 1) {
Display.sync(frameRate);
}
}
private void initPbuffer() {
try {
if (_pbuffer != null) {
giveBackContext();
ContextManager.removeContext(_pbuffer);
}
final PixelFormat format =
new PixelFormat(
_settings.getAlphaBits(), _settings.getDepthBits(), _settings.getStencilBits())
.withSamples(_settings.getSamples())
.withBitsPerPixel(_settings.getColorDepth())
.withStereo(_settings.isStereo());
_pbuffer = new Pbuffer(_width, _height, format, _texture, null);
final Object contextKey = _pbuffer;
try {
_pbuffer.makeCurrent();
} catch (final LWJGLException e) {
throw new RuntimeException(e);
}
final LwjglContextCapabilities caps =
new LwjglContextCapabilities(GLContext.getCapabilities());
ContextManager.addContext(
contextKey, new RenderContext(contextKey, caps, ContextManager.getCurrentContext()));
} catch (final Exception e) {
logger.logp(Level.SEVERE, this.getClass().toString(), "initPbuffer()", "Exception", e);
if (_texture != null && _useDirectRender) {
logger.warning(
"Your card claims to support Render to Texture but fails to enact it. Updating your driver might solve this problem.");
logger.warning("Attempting to fall back to Copy Texture.");
_texture = null;
_useDirectRender = false;
initPbuffer();
return;
}
logger.log(Level.WARNING, "Failed to create Pbuffer.", e);
return;
}
try {
activate();
_width = _pbuffer.getWidth();
_height = _pbuffer.getHeight();
deactivate();
} catch (final Exception e) {
logger.log(Level.WARNING, "Failed to initialize created Pbuffer.", e);
return;
}
}
protected void initInThread() {
if ((Pbuffer.getCapabilities() & Pbuffer.PBUFFER_SUPPORTED) == 0) {
logger.severe("Offscreen surfaces are not supported.");
return;
}
int samples = getNumSamplesToUse();
pixelFormat =
new PixelFormat(
settings.getBitsPerPixel(),
0,
settings.getDepthBits(),
settings.getStencilBits(),
samples);
width = settings.getWidth();
height = settings.getHeight();
try {
Thread.setDefaultUncaughtExceptionHandler(
new Thread.UncaughtExceptionHandler() {
public void uncaughtException(Thread thread, Throwable thrown) {
listener.handleError("Uncaught exception thrown in " + thread.toString(), thrown);
}
});
pbuffer = new Pbuffer(width, height, pixelFormat, null, null, createContextAttribs());
pbuffer.makeCurrent();
renderable.set(true);
logger.fine("Offscreen buffer created.");
printContextInitInfo();
} catch (LWJGLException ex) {
listener.handleError("Failed to create display", ex);
} finally {
// TODO: It is possible to avoid "Failed to find pixel format"
// error here by creating a default display.
}
super.internalCreate();
listener.initialize();
}
protected int determineMaxSamples(int requestedSamples) {
boolean displayWasCurrent = false;
try {
// If we already have a valid context, determine samples using current
// context.
if (Display.isCreated() && Display.isCurrent()) {
if (GLContext.getCapabilities().GL_ARB_framebuffer_object) {
return GL11.glGetInteger(ARBFramebufferObject.GL_MAX_SAMPLES);
} else if (GLContext.getCapabilities().GL_EXT_framebuffer_multisample) {
return GL11.glGetInteger(EXTFramebufferMultisample.GL_MAX_SAMPLES_EXT);
}
// Doesn't support any of the needed extensions .. continue down.
displayWasCurrent = true;
}
} catch (LWJGLException ex) {
listener.handleError("Failed to check if display is current", ex);
}
if ((Pbuffer.getCapabilities() & Pbuffer.PBUFFER_SUPPORTED) == 0) {
// No pbuffer, assume everything is supported.
return Integer.MAX_VALUE;
} else {
Pbuffer pb = null;
if (!displayWasCurrent) {
// OpenGL2 method: Create pbuffer and query samples
// from GL_ARB_framebuffer_object or GL_EXT_framebuffer_multisample.
try {
pb = new Pbuffer(1, 1, new PixelFormat(0, 0, 0), null);
pb.makeCurrent();
if (GLContext.getCapabilities().GL_ARB_framebuffer_object) {
return GL11.glGetInteger(ARBFramebufferObject.GL_MAX_SAMPLES);
} else if (GLContext.getCapabilities().GL_EXT_framebuffer_multisample) {
return GL11.glGetInteger(EXTFramebufferMultisample.GL_MAX_SAMPLES_EXT);
}
// OpenGL2 method failed.
} catch (LWJGLException ex) {
// Something else failed.
return Integer.MAX_VALUE;
} finally {
if (pb != null) {
pb.destroy();
pb = null;
}
}
}
// OpenGL1 method (DOESNT WORK RIGHT NOW ..)
requestedSamples = FastMath.nearestPowerOfTwo(requestedSamples);
try {
requestedSamples = Integer.MAX_VALUE;
/*
while (requestedSamples > 1) {
try {
pb = new Pbuffer(1, 1, new PixelFormat(16, 0, 8, 0, requestedSamples), null);
} catch (LWJGLException ex) {
if (ex.getMessage().startsWith("Failed to find ARB pixel format")) {
// Unsupported format, so continue.
requestedSamples = FastMath.nearestPowerOfTwo(requestedSamples / 2);
} else {
// Something else went wrong ..
return Integer.MAX_VALUE;
}
} finally {
if (pb != null){
pb.destroy();
pb = null;
}
}
}*/
} finally {
if (displayWasCurrent) {
try {
Display.makeCurrent();
} catch (LWJGLException ex) {
listener.handleError("Failed to make display current after checking samples", ex);
}
}
}
return requestedSamples;
}
}