Jul 27, 2020 · In most cases, VK_NULL_HANDLE can be assigned to any handle defined by VK_DEFINE_HANDLE(object) or VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) Wrong. You can get away with it because C and C++ let you. But the Vulkan specification is very clear:

Feb 16, 2013 · A handle can be a unsigned integer used in some lookup table. A handle can be a pointer to, or into, a larger set of data. It depends on how the code that uses the handle behaves. That determines the handle type. The reason the term 'handle' is used is what is important. That indicates them as an identification or access type of object.

Non-dispatchable handle types are a 64-bit integer type whose meaning is implementation-dependent, and may encode object information directly in the handle rather than pointing to a software structure. Objects of a non-dispatchable type may not have unique handle values within a type or across types.

A handle is an abstract reference to some resource provided to you by another party (usually the OS), that you can hand back to the other party to reference that resource. OSes often contain a handle table containing entities that users have created (open files, created semaphores, processes, threads, ...); the handle is (often implemented as ...

Jan 30, 2013 · A "memory handle" (that is similar to a pointer to a struct) is a concept from the land of 16-bit Windows programming, where there was no memory manager in the CPU and all memory management had to be done in software. Essentially, a "handle" was sort of a pointer, but the OS would be free to move around the memory that the handle referred to.

Jan 12, 2016 · The only difference between the two is that I define Handle::add_it within the class declaration in test1.cpp, but outside in test2.cpp. test1.cpp : g++ test1.cpp -o test1 -std=c++11

Aug 7, 2010 · #define DECLARE_HANDLE(name) struct name##__{int unused;}; typedef struct name##__ *name Why do we need a pointer to an struct with a single int member with a weird name called unused? And will we ever need to use a line of code like this one? HINSTANCE hInstance = new HINSTANCE__;

Feb 1, 2021 · I am trying to define a reader macro that reads the length of a string. The string will be enclosed in vertical bars (pipes).

Mar 31, 2024 · That is correct: thing is optional in the my_compatible nodes and flibble is optional inside thing but, fortunately, all of the elements of flibble (there are only two, we might call them bingInt and bingString) are not optional, I simply need to …

May 31, 2020 · A simple, self-contained example of a calculator that can handle addition and subtraction could look like this With an input 5+3+2+1 it gives as output: 5+3+2+1 =11