The debug output feature provides a simple method for your application to be notified via an application-defined message callback function when an OpenGL error (or other interesting event) occurs within the driver. Simply enable debug output, register a callback, and wait for it to be called with a DEBUG_TYPE_ERROR message.
This method avoids the need to sprinkle expensive and code-obfuscating glGetError() calls around your application to catch and localize the causes of OpenGL errors (and the need to conditionally compile them into debug builds to avoid the performance hit in optimized builds). The feature can even ensure that message callback functions are invoked on the same thread and within the very same call stack as the GL call that triggered the GL error (or performance warning).
The onerror() method is available to all HTML elements for handling any errors that may occur with them. For instance, if an img tag cannot find the image whose URL is specified, it fires its onerror method to allow the user to handle the error.
This function creates a new element, then sets its src attribute to the path we specified as the first argument ('polyfills.js' when we called it in the code above). When it has loaded, we run the function we specified as the second argument (main()). If an error occurs in the loading of the script, we still call the function, but with a custom error that we can retrieve to help debug a problem if it occurs.
If you are using Wayland, you might need to also set QT_QPA_PLATFORM=xcb, as the game's launcher uses a version of Qt which only supports Xorg (see Wayland#Qt), another way is to replace the bundled Qt with one provided by Arch Linux . Some versions of the game also seem to require adding SDL_VIDEODRIVER=x11 and will otherwise refuse to start with an error message that reads "An unrecoverable error has occurred, and Civilization VI cannot continue."
This will cause Example #1 above to immediately get an exception when hitting the statement with the error. Even though the guessing is turned off, you're still provided with the closest match to help with your debugging....
The ProgressBar element is used to build custom Progress Bar windows. It is HIGHLY recommended that you use OneLineProgressMeter that provides a complete progress meter solution for you. Progress Meters are not easy to work with because the windows have to be non-blocking and they are tricky to debug.
One reason for treating these as soft errors and thus not raising an exception is that raising an exception will crash your GUI. If you have redirected your output, which many GUIs do, then you will see no error information and your window will simply disappear. If you double clicked a .py file to launch your GUI, both the GUI and the console window will instantly disappear if the GUI crashes, leaving you no information to help you debug the problem.
Table Colors Fix - workaround for problems with tables and tree colors in Python 3.7.2 to 3.9+Mac crash fixed - tkinter.TclError: expected boolean value but got "" (hopefully)New shortcut "k" parameter for all elements that is the same as "key" - may be experimental / temporary if not well receivedMore error checkspopup extensions
I wanted to be able to show some useful debugging information when my C program hits an unrecoverableerror (or an error it's not worth trying to recover from in this case, like out of memory). There's noway to do it with what's in standard C, but there is a function for it in glibc calledbacktrace(3).
Since it is very unlikely, although possible, that a 32-bit integer would take this specific value, the appearance of such a number in a debugger or memory dump most likely indicates an error such as a buffer overflow or an uninitialized variable.
Every WebGPU object has a read-write attribute, label, which can be set by the application toprovide information for debugging tools (error messages, native profilers like Xcode, etc.)Every WebGPU object creation descriptor has a member label which sets the initial value of theattribute.
For both debugging (dev tools messages) and app telemetry (uncapturederror)implementations can choose to report some kind of "stack trace" in their error messages,taking advantage of object debug labels.For example, a debug message string could be: 2b1af7f3a8