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Author SHA1 Message Date
Gabriel Wang
0f175891a6
Add SVE2 SIMD Alpha-Blending Blitter (#15504) 
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.
 2026-05-13 23:37:46 -07:00
Isaac Aronson
0f351cd6af Remove ARM32 assembly/pixman blitters 2024-07-08 10:53:46 -07:00
Simon McVittie
f61870cfb4 Go back to using compiler built-in macros in ARM assembly code 
These files don't #include SDL headers, so SDL-specific macros will
never be defined here.

This partially reverts commit 31d133db.

Fixes: 31d133db "Define SDL_PLATFORM_* macros instead of underscored ones (#8875)"
Signed-off-by: Simon McVittie <smcv@collabora.com>
 2024-01-24 14:12:50 +03:00
Anonymous Maarten
31d133db40
Define SDL_PLATFORM_* macros instead of underscored ones (#8875) 2024-01-24 01:40:51 +00:00
luzpaz
37e567994d
Fix remaining typos (#7921) 
* Fix remaining typos

Found via `codespell -q 3 -S *.hex,*.pdf,./src/libm,./src/hidapi,./src/stdlib/SDL_malloc.c,./src/video/x11/edid.h -L caf,currenty,datas,einstance,fo,hda,lod,mata,parm,parms,pevent,pevents,pixelx,requestor,ser,statics,te,texturers,thid,uscaled,windowz`
 2023-07-03 12:46:47 -07:00
Sam Lantinga
e264bb5178 Rename SDL_PIXELFORMAT_RGB888 and SDL_PIXELFORMAT_BGR888 to SDL_PIXELFORMAT_XRGB8888 and SDL_PIXELFORMAT_XBGR8888 for clarity 
Fixes https://github.com/libsdl-org/SDL/issues/7903
 2023-07-01 17:58:34 -07:00
Anonymous Maarten
9cb5f0bfc6 video: fix ARM neon and simd 2023-03-15 14:54:20 +01:00
Ben Avison
72f8044a42 ARM: NEON assembly optimization for SDL_FillRect 2019-10-24 21:17:52 -04:00
Ben Avison
1187b013a5 ARM: NEON assembly optimization for function BlitARGBto565PixelAlpha 2019-10-24 21:17:38 -04:00
Ben Avison
2dfe060564 ARM: NEON assembly optimization for function BlitRGBtoRGBPixelAlpha 2019-10-24 21:17:19 -04:00
Ben Avison
74846657ec ARM: SIMD optimization for 4:4:4:4 to 8:8:8:8 normal blits 2019-10-24 21:15:50 -04:00
Ben Avison
becc649ae2 ARM: assembly optimization for SDL_FillRect 2019-10-24 21:15:35 -04:00
Ben Avison
7ac733f025 ARM: SIMD assembly optimization for BGR-to-RGB 32bpp normal blits 2019-10-24 21:15:21 -04:00
Ben Avison
0eaa52cedf ARM: SIMD assembly optimization for function BlitARGBto565PixelAlpha 2019-10-24 21:13:56 -04:00
Ben Avison
57723b83e8 ARM: SIMD assembly optimization for function BlitRGBtoRGBPixelAlpha 
Much of the heavy lifting of this optimization is lifted from the Pixman
project, which is distributed under an MIT-style license. As far as possible,
these elements have been relicensed to the zlib license.
 2019-10-24 21:13:05 -04:00