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Update SDL_sve2_extension.h

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This commit is contained in:
Gabriel Wang 2026-05-21 14:41:10 +08:00
parent 516f4a0bd5
commit 4b07a99f09
1 changed files with 12 additions and 15 deletions
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27
src/video/arm/SDL_sve2_extension.h
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@ -907,7 +907,8 @@ static inline svuint16_t sdl_sve_chn_blend_with_mask(svuint16_t vSource,
svuint16_t vMask)
{
// vTarget = vSource * vMask + vTarget * (255 - vMask);
svuint16_t vTemp0 = svmul_u16_m(svptrue_b16(), vSource, vMask);
svuint16_t vTemp0 = svdup_u16(1);
vTemp0 = svmla_u16_m(svptrue_b16(), vTemp0, vSource, vMask);
vTemp0 = svmla_u16_m(svptrue_b16(),
vTemp0,
vTarget,
@ -915,17 +916,13 @@ static inline svuint16_t sdl_sve_chn_blend_with_mask(svuint16_t vSource,
svdup_u16(255),
vMask));
vTemp0 = svadd_n_u16_m(svptrue_b16(), vTemp0, 1);
svuint16_t vTemp1 = svlsr_n_u16_m(svptrue_b16(), vTemp0, 8);
/* x += x >> 8 */
vTemp0 = svadd_u16_m(svptrue_b16(),
vTemp0,
vTemp1);
return svlsr_n_u16_m(svptrue_b16(), vTemp0, 8); // vTarget >> 8;
return svreinterpret_u16_u8(
svaddhnb_u16(vTemp0,
svlsr_n_u16_m(svptrue_b16(),
vTemp0,
8)));
}
/*! \note the Element range of vMask is [0, 0xFF]
*/
SDL_TARGETING("arch=armv8-a+sve2")
@ -968,15 +965,15 @@ static inline svuint16_t sdl_sve_chn_blend_with_opacity(svuint16_t vSource,
*/
SDL_TARGETING("arch=armv8-a+sve2")
static inline svuint16_t sdl_sve_chn_blend_with_opacity_fast(svuint16_t vSource,
svuint16_t vTarget,
uint16_t hwOpacity)
svuint16_t vTarget,
uint16_t hwOpacity)
{
// vTarget = vSource * vMask + vTarget * (255 - vMask);
svuint16_t vTemp0 = svmul_n_u16_m(svptrue_b16(), vSource, hwOpacity);
vTemp0 = svmla_n_u16_m(svptrue_b16(),
vTemp0,
vTarget,
256 - hwOpacity);
vTemp0,
vTarget,
256 - hwOpacity);
return svlsr_n_u16_m(svptrue_b16(), vTemp0, 8); // vTarget >> 8;
}