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Replace BlitRGBtoRGBSurfaceAlphaMMX

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This commit is contained in:
Brick
2024-07-07 00:24:25 +01:00
parent d37f8fa2b3
commit d604555142
1 changed files with 62 additions and 140 deletions
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202
src/video/SDL_blit_A.c
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@@ -166,158 +166,80 @@ static void BlitNto1SurfaceAlphaKey(SDL_BlitInfo *info)
}
}
#ifdef SDL_MMX_INTRINSICS
#ifdef SDL_SSE2_INTRINSICS
/* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */
static void SDL_TARGETING("mmx") BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info)
static void SDL_TARGETING("sse2") Blit888to888SurfaceAlphaSSE2(SDL_BlitInfo *info)
{
int width = info->dst_w;
int height = info->dst_h;
Uint32 *srcp = (Uint32 *)info->src;
int srcskip = info->src_skip >> 2;
Uint32 *dstp = (Uint32 *)info->dst;
int dstskip = info->dst_skip >> 2;
Uint32 dalpha = info->dst_fmt->Amask;
Uint8 *src = info->src;
int srcskip = info->src_skip;
Uint8 *dst = info->dst;
int dstskip = info->dst_skip;
Uint8 alpha = info->a;
__m64 src1, src2, dst1, dst2, lmask, hmask, dsta;
hmask = _mm_set_pi32(0x00fefefe, 0x00fefefe); /* alpha128 mask -> hmask */
lmask = _mm_set_pi32(0x00010101, 0x00010101); /* !alpha128 mask -> lmask */
dsta = _mm_set_pi32(dalpha, dalpha); /* dst alpha mask -> dsta */
const __m128i alpha_fill_mask = _mm_set1_epi32((int)0xff000000);
const __m128i srcA = _mm_set1_epi16(alpha);
while (height--) {
int n = width;
if (n & 1) {
Uint32 s = *srcp++;
Uint32 d = *dstp;
*dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) + (s & d & 0x00010101)) | dalpha;
n--;
int i = 0;
for (; i + 4 <= width; i += 4) {
// Load 4 src pixels
__m128i src128 = _mm_loadu_si128((__m128i *)src);
// Load 4 dst pixels
__m128i dst128 = _mm_loadu_si128((__m128i *)dst);
__m128i src_lo = _mm_unpacklo_epi8(src128, _mm_setzero_si128());
__m128i src_hi = _mm_unpackhi_epi8(src128, _mm_setzero_si128());
__m128i dst_lo = _mm_unpacklo_epi8(dst128, _mm_setzero_si128());
__m128i dst_hi = _mm_unpackhi_epi8(dst128, _mm_setzero_si128());
// dst = ((src - dst) * srcA) + ((dst << 8) - dst)
dst_lo = _mm_add_epi16(_mm_mullo_epi16(_mm_sub_epi16(src_lo, dst_lo), srcA),
_mm_sub_epi16(_mm_slli_epi16(dst_lo, 8), dst_lo));
dst_hi = _mm_add_epi16(_mm_mullo_epi16(_mm_sub_epi16(src_hi, dst_hi), srcA),
_mm_sub_epi16(_mm_slli_epi16(dst_hi, 8), dst_hi));
// dst += 0x1U (use 0x80 to round instead of floor)
dst_lo = _mm_add_epi16(dst_lo, _mm_set1_epi16(1));
dst_hi = _mm_add_epi16(dst_hi, _mm_set1_epi16(1));
// dst = (dst + (dst >> 8)) >> 8
dst_lo = _mm_srli_epi16(_mm_add_epi16(dst_lo, _mm_srli_epi16(dst_lo, 8)), 8);
dst_hi = _mm_srli_epi16(_mm_add_epi16(dst_hi, _mm_srli_epi16(dst_hi, 8)), 8);
dst128 = _mm_packus_epi16(dst_lo, dst_hi);
// Set the alpha channels of dst to 255
dst128 = _mm_or_si128(dst128, alpha_fill_mask);
_mm_storeu_si128((__m128i *)dst, dst128);
src += 16;
dst += 16;
}
for (n >>= 1; n > 0; --n) {
dst1 = *(__m64 *)dstp; /* 2 x dst -> dst1(ARGBARGB) */
dst2 = dst1; /* 2 x dst -> dst2(ARGBARGB) */
for (; i < width; ++i) {
Uint32 src32 = *(Uint32 *)src;
Uint32 dst32 = *(Uint32 *)dst;
src1 = *(__m64 *)srcp; /* 2 x src -> src1(ARGBARGB) */
src2 = src1; /* 2 x src -> src2(ARGBARGB) */
FACTOR_BLEND_8888(src32, dst32, alpha);
dst2 = _mm_and_si64(dst2, hmask); /* dst & mask -> dst2 */
src2 = _mm_and_si64(src2, hmask); /* src & mask -> src2 */
src2 = _mm_add_pi32(src2, dst2); /* dst2 + src2 -> src2 */
src2 = _mm_srli_pi32(src2, 1); /* src2 >> 1 -> src2 */
*dst = dst32 | 0xff000000;
dst1 = _mm_and_si64(dst1, src1); /* src & dst -> dst1 */
dst1 = _mm_and_si64(dst1, lmask); /* dst1 & !mask -> dst1 */
dst1 = _mm_add_pi32(dst1, src2); /* src2 + dst1 -> dst1 */
dst1 = _mm_or_si64(dst1, dsta); /* dsta(full alpha) | dst1 -> dst1 */
*(__m64 *)dstp = dst1; /* dst1 -> 2 x dst pixels */
dstp += 2;
srcp += 2;
src += 4;
dst += 4;
}
srcp += srcskip;
dstp += dstskip;
}
_mm_empty();
}
/* fast RGB888->(A)RGB888 blending with surface alpha */
static void SDL_TARGETING("mmx") BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info)
{
SDL_PixelFormat *df = info->dst_fmt;
Uint32 chanmask;
unsigned alpha = info->a;
if (alpha == 128 && (df->Rmask | df->Gmask | df->Bmask) == 0x00FFFFFF) {
/* only call a128 version when R,G,B occupy lower bits */
BlitRGBtoRGBSurfaceAlpha128MMX(info);
} else {
int width = info->dst_w;
int height = info->dst_h;
Uint32 *srcp = (Uint32 *)info->src;
int srcskip = info->src_skip >> 2;
Uint32 *dstp = (Uint32 *)info->dst;
int dstskip = info->dst_skip >> 2;
Uint32 dalpha = df->Amask;
Uint32 amult;
__m64 src1, src2, dst1, dst2, mm_alpha, mm_zero, dsta;
mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */
/* form the alpha mult */
amult = alpha | (alpha << 8);
amult = amult | (amult << 16);
chanmask =
(0xff << df->Rshift) | (0xff << df->Gshift) | (0xff << df->Bshift);
mm_alpha = _mm_set_pi32(0, amult & chanmask); /* 0000AAAA -> mm_alpha, minus 1 chan */
mm_alpha = _mm_unpacklo_pi8(mm_alpha, mm_zero); /* 0A0A0A0A -> mm_alpha, minus 1 chan */
/* at this point mm_alpha can be 000A0A0A or 0A0A0A00 or another combo */
dsta = _mm_set_pi32(dalpha, dalpha); /* dst alpha mask -> dsta */
while (height--) {
int n = width;
if (n & 1) {
/* One Pixel Blend */
src2 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src2 (0000ARGB) */
src2 = _mm_unpacklo_pi8(src2, mm_zero); /* 0A0R0G0B -> src2 */
dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB) */
dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */
src2 = _mm_sub_pi16(src2, dst1); /* src2 - dst2 -> src2 */
src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */
src2 = _mm_srli_pi16(src2, 8); /* src2 >> 8 -> src2 */
dst1 = _mm_add_pi8(src2, dst1); /* src2 + dst1 -> dst1 */
dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */
dst1 = _mm_or_si64(dst1, dsta); /* dsta | dst1 -> dst1 */
*dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */
++srcp;
++dstp;
n--;
}
for (n >>= 1; n > 0; --n) {
/* Two Pixels Blend */
src1 = *(__m64 *)srcp; /* 2 x src -> src1(ARGBARGB) */
src2 = src1; /* 2 x src -> src2(ARGBARGB) */
src1 = _mm_unpacklo_pi8(src1, mm_zero); /* low - 0A0R0G0B -> src1 */
src2 = _mm_unpackhi_pi8(src2, mm_zero); /* high - 0A0R0G0B -> src2 */
dst1 = *(__m64 *)dstp; /* 2 x dst -> dst1(ARGBARGB) */
dst2 = dst1; /* 2 x dst -> dst2(ARGBARGB) */
dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* low - 0A0R0G0B -> dst1 */
dst2 = _mm_unpackhi_pi8(dst2, mm_zero); /* high - 0A0R0G0B -> dst2 */
src1 = _mm_sub_pi16(src1, dst1); /* src1 - dst1 -> src1 */
src1 = _mm_mullo_pi16(src1, mm_alpha); /* src1 * alpha -> src1 */
src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1 */
dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1(dst1) -> dst1 */
src2 = _mm_sub_pi16(src2, dst2); /* src2 - dst2 -> src2 */
src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */
src2 = _mm_srli_pi16(src2, 8); /* src2 >> 8 -> src2 */
dst2 = _mm_add_pi8(src2, dst2); /* src2 + dst2(dst2) -> dst2 */
dst1 = _mm_packs_pu16(dst1, dst2); /* 0A0R0G0B(res1), 0A0R0G0B(res2) -> dst1(ARGBARGB) */
dst1 = _mm_or_si64(dst1, dsta); /* dsta | dst1 -> dst1 */
*(__m64 *)dstp = dst1; /* dst1 -> 2 x pixel */
srcp += 2;
dstp += 2;
}
srcp += srcskip;
dstp += dstskip;
}
_mm_empty();
src += srcskip;
dst += dstskip;
}
}
#endif /* SDL_MMX_INTRINSICS */
#endif
/* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */
static void BlitRGBtoRGBSurfaceAlpha128(SDL_BlitInfo *info)
@@ -1133,7 +1055,7 @@ static void SDL_TARGETING("sse4.1") Blit8888to8888PixelAlphaSwizzleSSE41(SDL_Bli
dst_lo = _mm_add_epi16(dst_lo, _mm_set1_epi16(1));
dst_hi = _mm_add_epi16(dst_hi, _mm_set1_epi16(1));
// dst += dst >> 8
// dst = (dst + (dst >> 8)) >> 8
dst_lo = _mm_srli_epi16(_mm_add_epi16(dst_lo, _mm_srli_epi16(dst_lo, 8)), 8);
dst_hi = _mm_srli_epi16(_mm_add_epi16(dst_hi, _mm_srli_epi16(dst_hi, 8)), 8);
@@ -1225,7 +1147,7 @@ static void SDL_TARGETING("avx2") Blit8888to8888PixelAlphaSwizzleAVX2(SDL_BlitIn
dst_lo = _mm256_add_epi16(dst_lo, _mm256_set1_epi16(1));
dst_hi = _mm256_add_epi16(dst_hi, _mm256_set1_epi16(1));
// dst += dst >> 8
// dst = (dst + (dst >> 8)) >> 8
dst_lo = _mm256_srli_epi16(_mm256_add_epi16(dst_lo, _mm256_srli_epi16(dst_lo, 8)), 8);
dst_hi = _mm256_srli_epi16(_mm256_add_epi16(dst_hi, _mm256_srli_epi16(dst_hi, 8)), 8);
@@ -1384,9 +1306,9 @@ SDL_BlitFunc SDL_CalculateBlitA(SDL_Surface *surface)
case 4:
if (sf->Rmask == df->Rmask && sf->Gmask == df->Gmask && sf->Bmask == df->Bmask && sf->bytes_per_pixel == 4) {
#ifdef SDL_MMX_INTRINSICS
if (sf->Rshift % 8 == 0 && sf->Gshift % 8 == 0 && sf->Bshift % 8 == 0 && SDL_HasMMX()) {
return BlitRGBtoRGBSurfaceAlphaMMX;
#ifdef SDL_SSE2_INTRINSICS
if (sf->Rshift % 8 == 0 && sf->Gshift % 8 == 0 && sf->Bshift % 8 == 0 && SDL_HasSSE2()) {
return Blit888to888SurfaceAlphaSSE2;
}
#endif
if ((sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff) {