On Wednesday, 1 July 2020 at 19:33:08 UTC, JN wrote:
Bit off-topic, but if you can use them, debug contexts offer
much better OpenGL error-checking experience.
https://www.khronos.org/opengl/wiki/Debug_Output . Instead of
checking glGetError() after each call, you can setup a C
callback that will trigger whenever an error occurs. It also
offers some vendor-specific performance warnings.
I use those as well, to get a more detailed message about the
error than the error code alone. While it helps describing _what_
went wrong, it doesn't tell me _where_ it went wrong.
I tried doing assert(0) in the callback, but even with
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS), the stack trace looks
something like this:
app.d: debugCallback [0x559eda75c7e8]
??:? [0x7f4a0bffa7d7]
And then it ends. It seems like it goes up into the OpenGL dll
and then gets stuck, it does not trace back to the call site of
the glFunction that failed.
