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loongarch: add SDL_FillRect4LSX opt

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yuanhecai
2025-10-28 11:09:34 +08:00
committed by Sam Lantinga
parent 686c18026b
commit 14eebdab3c
1 changed files with 62 additions and 0 deletions
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62
src/video/SDL_fillrect.c
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@@ -135,6 +135,61 @@ DEFINE_SSE_FILLRECT(4, Uint32)
/* *INDENT-ON* */ /* clang-format on */
#endif /* __SSE__ */
#if defined(__loongarch_sx)
#define LSX_BEGIN __m128i c128 = __lsx_vreplgr2vr_w(color);
#define LSX_WORK \
for (i = n / 64; i--;) { \
__lsx_vst(c128, p, 0); \
__lsx_vst(c128, p, 16); \
__lsx_vst(c128, p, 32); \
__lsx_vst(c128, p, 48); \
p += 64; \
}
#define DEFINE_LSX_FILLRECT(bpp, type) \
static void \
SDL_FillRect##bpp##LSX(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
{ \
int i, n; \
Uint8 *p = NULL; \
\
LSX_BEGIN; \
\
while (h--) { \
n = w * bpp; \
p = pixels; \
\
if (n > 63) { \
int adjust = 16 - ((uintptr_t)p & 15); \
if (adjust < 16) { \
n -= adjust; \
adjust /= bpp; \
while (adjust--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
LSX_WORK; \
} \
if (n & 63) { \
int remainder = (n & 63); \
remainder /= bpp; \
while (remainder--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
pixels += pitch; \
} \
\
}
DEFINE_LSX_FILLRECT(4, Uint32)
#endif
static void SDL_FillRect1(Uint8 *pixels, int pitch, Uint32 color, int w, int h)
{
int n;
@@ -423,6 +478,13 @@ int SDL_FillRects(SDL_Surface *dst, const SDL_Rect *rects, int count,
break;
}
#endif
#ifdef __loongarch_sx
if (SDL_HasLSX()) {
fill_function = SDL_FillRect4LSX;
break;
}
#endif
fill_function = SDL_FillRect4;
break;
}