We don't care _what_ the `sizeof` results are, we just want it to vaporize
the condition's code out of the build. So we check it with a `? 1 : 0`, so it
always boils down to a `sizeof (int)`, no matter what data type the condition
actually is.
This works with bitfields, pointers, anything that can be "truthy." If it
isn't truthy, it would fail when assertions are enabled anyhow.
Fixes#15990.
(cherry picked from commit daf519ae05)
Under the right conditions, this extension can result is smoother resizing when rendering with OpenGL, however, it is known to cause problems in certain cases, such as when handling presentation externally.
Gate it behind a hint, and disable it by default. Developers can selectively enable it when they verify that they meet the criteria for using it, and that it behaves correctly in their apps/games.
(cherry picked from commit b8545fce54)
On some platforms, SDL_MemoryBarrierRelease() is defined to
SDL_CompilerBarrier(). If SDL_CompilerBarrier() is also defined to
the fallback spinlock acquire/release, then we will infinitely
recurse in SDL_UnlockSpinlock(). Avoid this by not unlocking the
temporary spinlock we create.
(cherry picked from commit 66e98b5598)
This is a little more efficient than a DMB ISH and matches what
GCC, Clang, and MSVC generate for a C++11 acquire fence.
(cherry picked from commit f2206974b0)
This avoids requiring inline assembly for each architecture.
It also fixes some weakly ordered architectures which lacked
said inline assembly (RISC-V, MIPS, LoongArch, etc) and were
thus disasterously broken.
(cherry picked from commit 2858a32723)
Support for this hint was removed from Wayland shortly after it was added, but the documentation was never updated to reflect this.
(cherry picked from commit 76aa12701a)
Now apps can have persistent files available during SDL_main()/SDL_AppInit()
and don't have to mess with Emscripten-specific code to prepare the filesystem
for use.
(cherry picked from commit dcc177faa4)
to eliminate discrepancies between release-3.4.x and main branches.
(cherry picked from commit 165bfd3e83)
(cherry picked from commit 90aaa23977)
(cherry picked from commit 7d27ca282e)
(cherry picked from commit 6fc31b7f0b)
(cherry picked from commit c71c53c406)
(cherry picked from commit c9b7ca0c42)
(cherry picked from commit e2bc4be482)
(cherry picked from commit ae4fb50316)
(cherry picked from commit 6f45f97af0)
(cherry picked from commit d2ca570050)
(cherry picked from commit 73500019ea)
(cherry picked from commit 72ed7d0f87)
(cherry picked from commit 2aacf018f0)
[ci skip]
