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;
}
}