Safari's older Gamepad API exposes `vibrationActuator` with `playEffect`
and `reset` but no `effects` enumeration array. The probe added in
651136ac7 dereferences `vibrationActuator['effects']['includes']`
unconditionally, throwing `TypeError: undefined is not an object` on
every Safari client that opens a connected gamepad. Add the missing
`['effects']` null check so the probe returns false on Safari instead
of aborting.
This would make `SDL_EnumerateDirectory("assets://")` fail.
We check for empty strings at the higher level already, before we strip out
the "assets://" prefix to pass through the tree.
The HID descriptor for the latest firmware always includes the share button, and GameInput will report it as always available, so double check against our list of classic Xbox One controllers and don't include the button on controllers that don't have it.
This could happen if opendir() failed for a reason other than the directory
missing (for example, `opendir("/")` fails with EACCES.
Reference Issue #15587.
This fixes a UBSAN warning later in this function where it calculates
(1 << SDL_BITSPERPIXEL(surface->format)). The bpp might be >= 32 and
out of range for a bit shift.
move SDL_UsingGameInputForXInputControllers() to core/windows/SDL_gameinput.cpp
because joystick/gdk/SDL_gameinputjoystick.cpp isn't always added to build.
SVE/SVE2 is a new SIMD extension for AArch64. Compared to NEON, SVE/SVE2 brings the following benefits that are good for SDL projects:
- Lane prediction: we don't have to treat the tail part of a stride separately when the width is n times the hardware vector size
- Although the performance is almost no difference from NEON when the hardware vector size is 128bits, when the hardware provides a longer vector size, e.g. 256, 512, ... 2048, we can enjoy the large performance gain without modifying the source code or recompiling a library.
The functional correctness is validated in a dedicated [qemu project](https://github.com/GorgonMeducer/aarch64_qemu_mac_template/tree/SDL-SVE2-Acceleration-Validation).
The performance is tested on [Radxa Orion 6 N](https://radxa.com/products/orion/o6n/), which provides 4x A720 and 4x A520 processors. Since the vector size is 128 bits, which is the same as NEON, the performance is almost the same (or no worse than) the NEON acceleration.
Because the blend mode is explicitly set to SDL_BLENDMODE_NONE, it doesn't matter if there's a transparency channel in the texture format or not for opaque windows. This ensures that a 32-bit format is used with Metal instead of SDL_PIXELFORMAT_RGB565.
