| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2010 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| |
| Sam Lantinga |
| slouken@libsdl.org |
| */ |
| #include "SDL_config.h" |
| |
| #include "SDL_video.h" |
| #include "SDL_blit.h" |
| |
| /* Functions to perform alpha blended blitting */ |
| |
| /* N->1 blending with per-surface alpha */ |
| static void |
| BlitNto1SurfaceAlpha(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint8 *src = info->src; |
| int srcskip = info->src_skip; |
| Uint8 *dst = info->dst; |
| int dstskip = info->dst_skip; |
| Uint8 *palmap = info->table; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| int srcbpp = srcfmt->BytesPerPixel; |
| |
| const unsigned A = info->a; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4( |
| { |
| Uint32 Pixel; |
| unsigned sR; |
| unsigned sG; |
| unsigned sB; |
| unsigned dR; |
| unsigned dG; |
| unsigned dB; |
| DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
| dR = dstfmt->palette->colors[*dst].r; |
| dG = dstfmt->palette->colors[*dst].g; |
| dB = dstfmt->palette->colors[*dst].b; |
| ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); |
| dR &= 0xff; |
| dG &= 0xff; |
| dB &= 0xff; |
| /* Pack RGB into 8bit pixel */ |
| if ( palmap == NULL ) { |
| *dst =((dR>>5)<<(3+2))| |
| ((dG>>5)<<(2))| |
| ((dB>>6)<<(0)); |
| } else { |
| *dst = palmap[((dR>>5)<<(3+2))| |
| ((dG>>5)<<(2)) | |
| ((dB>>6)<<(0))]; |
| } |
| dst++; |
| src += srcbpp; |
| }, |
| width); |
| /* *INDENT-ON* */ |
| src += srcskip; |
| dst += dstskip; |
| } |
| } |
| |
| /* N->1 blending with pixel alpha */ |
| static void |
| BlitNto1PixelAlpha(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint8 *src = info->src; |
| int srcskip = info->src_skip; |
| Uint8 *dst = info->dst; |
| int dstskip = info->dst_skip; |
| Uint8 *palmap = info->table; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| int srcbpp = srcfmt->BytesPerPixel; |
| |
| /* FIXME: fix alpha bit field expansion here too? */ |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4( |
| { |
| Uint32 Pixel; |
| unsigned sR; |
| unsigned sG; |
| unsigned sB; |
| unsigned sA; |
| unsigned dR; |
| unsigned dG; |
| unsigned dB; |
| DISEMBLE_RGBA(src,srcbpp,srcfmt,Pixel,sR,sG,sB,sA); |
| dR = dstfmt->palette->colors[*dst].r; |
| dG = dstfmt->palette->colors[*dst].g; |
| dB = dstfmt->palette->colors[*dst].b; |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| dR &= 0xff; |
| dG &= 0xff; |
| dB &= 0xff; |
| /* Pack RGB into 8bit pixel */ |
| if ( palmap == NULL ) { |
| *dst =((dR>>5)<<(3+2))| |
| ((dG>>5)<<(2))| |
| ((dB>>6)<<(0)); |
| } else { |
| *dst = palmap[((dR>>5)<<(3+2))| |
| ((dG>>5)<<(2)) | |
| ((dB>>6)<<(0)) ]; |
| } |
| dst++; |
| src += srcbpp; |
| }, |
| width); |
| /* *INDENT-ON* */ |
| src += srcskip; |
| dst += dstskip; |
| } |
| } |
| |
| /* colorkeyed N->1 blending with per-surface alpha */ |
| static void |
| BlitNto1SurfaceAlphaKey(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint8 *src = info->src; |
| int srcskip = info->src_skip; |
| Uint8 *dst = info->dst; |
| int dstskip = info->dst_skip; |
| Uint8 *palmap = info->table; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| int srcbpp = srcfmt->BytesPerPixel; |
| Uint32 ckey = info->colorkey; |
| |
| const int A = info->a; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP( |
| { |
| Uint32 Pixel; |
| unsigned sR; |
| unsigned sG; |
| unsigned sB; |
| unsigned dR; |
| unsigned dG; |
| unsigned dB; |
| DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
| if ( Pixel != ckey ) { |
| dR = dstfmt->palette->colors[*dst].r; |
| dG = dstfmt->palette->colors[*dst].g; |
| dB = dstfmt->palette->colors[*dst].b; |
| ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); |
| dR &= 0xff; |
| dG &= 0xff; |
| dB &= 0xff; |
| /* Pack RGB into 8bit pixel */ |
| if ( palmap == NULL ) { |
| *dst =((dR>>5)<<(3+2))| |
| ((dG>>5)<<(2)) | |
| ((dB>>6)<<(0)); |
| } else { |
| *dst = palmap[((dR>>5)<<(3+2))| |
| ((dG>>5)<<(2)) | |
| ((dB>>6)<<(0)) ]; |
| } |
| } |
| dst++; |
| src += srcbpp; |
| }, |
| width); |
| /* *INDENT-ON* */ |
| src += srcskip; |
| dst += dstskip; |
| } |
| } |
| |
| #ifdef __MMX__ |
| |
| /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
| static void |
| BlitRGBtoRGBSurfaceAlpha128MMX(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; |
| |
| __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 */ |
| |
| 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--; |
| } |
| |
| for (n >>= 1; n > 0; --n) { |
| dst1 = *(__m64 *) dstp; /* 2 x dst -> dst1(ARGBARGB) */ |
| dst2 = dst1; /* 2 x dst -> dst2(ARGBARGB) */ |
| |
| src1 = *(__m64 *) srcp; /* 2 x src -> src1(ARGBARGB) */ |
| src2 = src1; /* 2 x src -> src2(ARGBARGB) */ |
| |
| 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 */ |
| |
| 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; |
| } |
| |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| _mm_empty(); |
| } |
| |
| /* fast RGB888->(A)RGB888 blending with surface alpha */ |
| static void |
| BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo * info) |
| { |
| SDL_PixelFormat *df = info->dst_fmt; |
| Uint32 chanmask = df->Rmask | df->Gmask | df->Bmask; |
| 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(); |
| } |
| } |
| |
| /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| static void |
| BlitRGBtoRGBPixelAlphaMMX(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; |
| SDL_PixelFormat *sf = info->src_fmt; |
| Uint32 chanmask = sf->Rmask | sf->Gmask | sf->Bmask; |
| Uint32 amask = sf->Amask; |
| Uint32 ashift = sf->Ashift; |
| Uint64 multmask; |
| |
| __m64 src1, dst1, mm_alpha, mm_zero, dmask; |
| |
| mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
| multmask = 0xFFFF; |
| multmask <<= (ashift * 2); |
| multmask = ~multmask; |
| dmask = *(__m64 *) & multmask; /* dst alpha mask -> dmask */ |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| Uint32 alpha = *srcp & amask; |
| if (alpha == 0) { |
| /* do nothing */ |
| } else if (alpha == amask) { |
| /* opaque alpha -- copy RGB, keep dst alpha */ |
| *dstp = (*srcp & chanmask) | (*dstp & ~chanmask); |
| } else { |
| src1 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src1 (0000ARGB)*/ |
| src1 = _mm_unpacklo_pi8(src1, mm_zero); /* 0A0R0G0B -> src1 */ |
| |
| dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
| dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
| |
| mm_alpha = _mm_cvtsi32_si64(alpha); /* alpha -> mm_alpha (0000000A) */ |
| mm_alpha = _mm_srli_si64(mm_alpha, ashift); /* mm_alpha >> ashift -> mm_alpha(0000000A) */ |
| mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| mm_alpha = _mm_and_si64(mm_alpha, dmask); /* 000A0A0A -> mm_alpha, preserve dst alpha on add */ |
| |
| /* blend */ |
| src1 = _mm_sub_pi16(src1, dst1);/* src1 - dst1 -> src1 */ |
| src1 = _mm_mullo_pi16(src1, mm_alpha); /* (src1 - dst1) * alpha -> src1 */ |
| src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1(000R0G0B) */ |
| dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1 -> dst1(0A0R0G0B) */ |
| dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
| |
| *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
| } |
| ++srcp; |
| ++dstp; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| _mm_empty(); |
| } |
| |
| #endif /* __MMX__ */ |
| |
| #if SDL_ALTIVEC_BLITTERS |
| #if __MWERKS__ |
| #pragma altivec_model on |
| #endif |
| #if HAVE_ALTIVEC_H |
| #include <altivec.h> |
| #endif |
| #include <assert.h> |
| |
| #if (defined(__MACOSX__) && (__GNUC__ < 4)) |
| #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \ |
| (vector unsigned char) ( a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p ) |
| #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \ |
| (vector unsigned short) ( a,b,c,d,e,f,g,h ) |
| #else |
| #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \ |
| (vector unsigned char) { a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p } |
| #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \ |
| (vector unsigned short) { a,b,c,d,e,f,g,h } |
| #endif |
| |
| #define UNALIGNED_PTR(x) (((size_t) x) & 0x0000000F) |
| #define VECPRINT(msg, v) do { \ |
| vector unsigned int tmpvec = (vector unsigned int)(v); \ |
| unsigned int *vp = (unsigned int *)&tmpvec; \ |
| printf("%s = %08X %08X %08X %08X\n", msg, vp[0], vp[1], vp[2], vp[3]); \ |
| } while (0) |
| |
| /* the permuation vector that takes the high bytes out of all the appropriate shorts |
| (vector unsigned char)( |
| 0x00, 0x10, 0x02, 0x12, |
| 0x04, 0x14, 0x06, 0x16, |
| 0x08, 0x18, 0x0A, 0x1A, |
| 0x0C, 0x1C, 0x0E, 0x1E ); |
| */ |
| #define VEC_MERGE_PERMUTE() (vec_add(vec_lvsl(0, (int*)NULL), (vector unsigned char)vec_splat_u16(0x0F))) |
| #define VEC_U32_24() (vec_add(vec_splat_u32(12), vec_splat_u32(12))) |
| #define VEC_ALPHA_MASK() ((vector unsigned char)vec_sl((vector unsigned int)vec_splat_s8(-1), VEC_U32_24())) |
| #define VEC_ALIGNER(src) ((UNALIGNED_PTR(src)) \ |
| ? vec_lvsl(0, src) \ |
| : vec_add(vec_lvsl(8, src), vec_splat_u8(8))) |
| |
| |
| #define VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1_16, v8_16) do { \ |
| /* vtemp1 contains source AAGGAAGGAAGGAAGG */ \ |
| vector unsigned short vtemp1 = vec_mule(vs, valpha); \ |
| /* vtemp2 contains source RRBBRRBBRRBBRRBB */ \ |
| vector unsigned short vtemp2 = vec_mulo(vs, valpha); \ |
| /* valpha2 is 255-alpha */ \ |
| vector unsigned char valpha2 = vec_nor(valpha, valpha); \ |
| /* vtemp3 contains dest AAGGAAGGAAGGAAGG */ \ |
| vector unsigned short vtemp3 = vec_mule(vd, valpha2); \ |
| /* vtemp4 contains dest RRBBRRBBRRBBRRBB */ \ |
| vector unsigned short vtemp4 = vec_mulo(vd, valpha2); \ |
| /* add source and dest */ \ |
| vtemp1 = vec_add(vtemp1, vtemp3); \ |
| vtemp2 = vec_add(vtemp2, vtemp4); \ |
| /* vtemp1 = (vtemp1 + 1) + ((vtemp1 + 1) >> 8) */ \ |
| vtemp1 = vec_add(vtemp1, v1_16); \ |
| vtemp3 = vec_sr(vtemp1, v8_16); \ |
| vtemp1 = vec_add(vtemp1, vtemp3); \ |
| /* vtemp2 = (vtemp2 + 1) + ((vtemp2 + 1) >> 8) */ \ |
| vtemp2 = vec_add(vtemp2, v1_16); \ |
| vtemp4 = vec_sr(vtemp2, v8_16); \ |
| vtemp2 = vec_add(vtemp2, vtemp4); \ |
| /* (>>8) and get ARGBARGBARGBARGB */ \ |
| vd = (vector unsigned char)vec_perm(vtemp1, vtemp2, mergePermute); \ |
| } while (0) |
| |
| /* Calculate the permute vector used for 32->32 swizzling */ |
| static vector unsigned char |
| calc_swizzle32(const SDL_PixelFormat * srcfmt, const SDL_PixelFormat * dstfmt) |
| { |
| /* |
| * We have to assume that the bits that aren't used by other |
| * colors is alpha, and it's one complete byte, since some formats |
| * leave alpha with a zero mask, but we should still swizzle the bits. |
| */ |
| /* ARGB */ |
| const static struct SDL_PixelFormat default_pixel_format = { |
| NULL, 0, 0, |
| 0, 0, 0, 0, |
| 16, 8, 0, 24, |
| 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 |
| }; |
| if (!srcfmt) { |
| srcfmt = &default_pixel_format; |
| } |
| if (!dstfmt) { |
| dstfmt = &default_pixel_format; |
| } |
| const vector unsigned char plus = VECUINT8_LITERAL(0x00, 0x00, 0x00, 0x00, |
| 0x04, 0x04, 0x04, 0x04, |
| 0x08, 0x08, 0x08, 0x08, |
| 0x0C, 0x0C, 0x0C, |
| 0x0C); |
| vector unsigned char vswiz; |
| vector unsigned int srcvec; |
| #define RESHIFT(X) (3 - ((X) >> 3)) |
| Uint32 rmask = RESHIFT(srcfmt->Rshift) << (dstfmt->Rshift); |
| Uint32 gmask = RESHIFT(srcfmt->Gshift) << (dstfmt->Gshift); |
| Uint32 bmask = RESHIFT(srcfmt->Bshift) << (dstfmt->Bshift); |
| Uint32 amask; |
| /* Use zero for alpha if either surface doesn't have alpha */ |
| if (dstfmt->Amask) { |
| amask = |
| ((srcfmt->Amask) ? RESHIFT(srcfmt-> |
| Ashift) : 0x10) << (dstfmt->Ashift); |
| } else { |
| amask = |
| 0x10101010 & ((dstfmt->Rmask | dstfmt->Gmask | dstfmt->Bmask) ^ |
| 0xFFFFFFFF); |
| } |
| #undef RESHIFT |
| ((unsigned int *) (char *) &srcvec)[0] = (rmask | gmask | bmask | amask); |
| vswiz = vec_add(plus, (vector unsigned char) vec_splat(srcvec, 0)); |
| return (vswiz); |
| } |
| |
| static void |
| Blit32to565PixelAlphaAltivec(SDL_BlitInfo * info) |
| { |
| int height = info->dst_h; |
| Uint8 *src = (Uint8 *) info->src; |
| int srcskip = info->src_skip; |
| Uint8 *dst = (Uint8 *) info->dst; |
| int dstskip = info->dst_skip; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| |
| vector unsigned char v0 = vec_splat_u8(0); |
| vector unsigned short v8_16 = vec_splat_u16(8); |
| vector unsigned short v1_16 = vec_splat_u16(1); |
| vector unsigned short v2_16 = vec_splat_u16(2); |
| vector unsigned short v3_16 = vec_splat_u16(3); |
| vector unsigned int v8_32 = vec_splat_u32(8); |
| vector unsigned int v16_32 = vec_add(v8_32, v8_32); |
| vector unsigned short v3f = |
| VECUINT16_LITERAL(0x003f, 0x003f, 0x003f, 0x003f, |
| 0x003f, 0x003f, 0x003f, 0x003f); |
| vector unsigned short vfc = |
| VECUINT16_LITERAL(0x00fc, 0x00fc, 0x00fc, 0x00fc, |
| 0x00fc, 0x00fc, 0x00fc, 0x00fc); |
| |
| /* |
| 0x10 - 0x1f is the alpha |
| 0x00 - 0x0e evens are the red |
| 0x01 - 0x0f odds are zero |
| */ |
| vector unsigned char vredalpha1 = VECUINT8_LITERAL(0x10, 0x00, 0x01, 0x01, |
| 0x10, 0x02, 0x01, 0x01, |
| 0x10, 0x04, 0x01, 0x01, |
| 0x10, 0x06, 0x01, |
| 0x01); |
| vector unsigned char vredalpha2 = |
| (vector unsigned char) (vec_add((vector unsigned int) vredalpha1, |
| vec_sl(v8_32, v16_32)) |
| ); |
| /* |
| 0x00 - 0x0f is ARxx ARxx ARxx ARxx |
| 0x11 - 0x0f odds are blue |
| */ |
| vector unsigned char vblue1 = VECUINT8_LITERAL(0x00, 0x01, 0x02, 0x11, |
| 0x04, 0x05, 0x06, 0x13, |
| 0x08, 0x09, 0x0a, 0x15, |
| 0x0c, 0x0d, 0x0e, 0x17); |
| vector unsigned char vblue2 = |
| (vector unsigned char) (vec_add((vector unsigned int) vblue1, v8_32) |
| ); |
| /* |
| 0x00 - 0x0f is ARxB ARxB ARxB ARxB |
| 0x10 - 0x0e evens are green |
| */ |
| vector unsigned char vgreen1 = VECUINT8_LITERAL(0x00, 0x01, 0x10, 0x03, |
| 0x04, 0x05, 0x12, 0x07, |
| 0x08, 0x09, 0x14, 0x0b, |
| 0x0c, 0x0d, 0x16, 0x0f); |
| vector unsigned char vgreen2 = |
| (vector unsigned |
| char) (vec_add((vector unsigned int) vgreen1, vec_sl(v8_32, v8_32)) |
| ); |
| vector unsigned char vgmerge = VECUINT8_LITERAL(0x00, 0x02, 0x00, 0x06, |
| 0x00, 0x0a, 0x00, 0x0e, |
| 0x00, 0x12, 0x00, 0x16, |
| 0x00, 0x1a, 0x00, 0x1e); |
| vector unsigned char mergePermute = VEC_MERGE_PERMUTE(); |
| vector unsigned char vpermute = calc_swizzle32(srcfmt, NULL); |
| vector unsigned char valphaPermute = |
| vec_and(vec_lvsl(0, (int *) NULL), vec_splat_u8(0xC)); |
| |
| vector unsigned short vf800 = (vector unsigned short) vec_splat_u8(-7); |
| vf800 = vec_sl(vf800, vec_splat_u16(8)); |
| |
| while (height--) { |
| int extrawidth; |
| vector unsigned char valigner; |
| vector unsigned char vsrc; |
| vector unsigned char voverflow; |
| int width = info->dst_w; |
| |
| #define ONE_PIXEL_BLEND(condition, widthvar) \ |
| while (condition) { \ |
| Uint32 Pixel; \ |
| unsigned sR, sG, sB, dR, dG, dB, sA; \ |
| DISEMBLE_RGBA(src, 4, srcfmt, Pixel, sR, sG, sB, sA); \ |
| if(sA) { \ |
| unsigned short dstpixel = *((unsigned short *)dst); \ |
| dR = (dstpixel >> 8) & 0xf8; \ |
| dG = (dstpixel >> 3) & 0xfc; \ |
| dB = (dstpixel << 3) & 0xf8; \ |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| *((unsigned short *)dst) = ( \ |
| ((dR & 0xf8) << 8) | ((dG & 0xfc) << 3) | (dB >> 3) \ |
| ); \ |
| } \ |
| src += 4; \ |
| dst += 2; \ |
| widthvar--; \ |
| } |
| ONE_PIXEL_BLEND((UNALIGNED_PTR(dst)) && (width), width); |
| extrawidth = (width % 8); |
| valigner = VEC_ALIGNER(src); |
| vsrc = (vector unsigned char) vec_ld(0, src); |
| width -= extrawidth; |
| while (width) { |
| vector unsigned char valpha; |
| vector unsigned char vsrc1, vsrc2; |
| vector unsigned char vdst1, vdst2; |
| vector unsigned short vR, vG, vB; |
| vector unsigned short vpixel, vrpixel, vgpixel, vbpixel; |
| |
| /* Load 8 pixels from src as ARGB */ |
| voverflow = (vector unsigned char) vec_ld(15, src); |
| vsrc = vec_perm(vsrc, voverflow, valigner); |
| vsrc1 = vec_perm(vsrc, vsrc, vpermute); |
| src += 16; |
| vsrc = (vector unsigned char) vec_ld(15, src); |
| voverflow = vec_perm(voverflow, vsrc, valigner); |
| vsrc2 = vec_perm(voverflow, voverflow, vpermute); |
| src += 16; |
| |
| /* Load 8 pixels from dst as XRGB */ |
| voverflow = vec_ld(0, dst); |
| vR = vec_and((vector unsigned short) voverflow, vf800); |
| vB = vec_sl((vector unsigned short) voverflow, v3_16); |
| vG = vec_sl(vB, v2_16); |
| vdst1 = |
| (vector unsigned char) vec_perm((vector unsigned char) vR, |
| (vector unsigned char) vR, |
| vredalpha1); |
| vdst1 = vec_perm(vdst1, (vector unsigned char) vB, vblue1); |
| vdst1 = vec_perm(vdst1, (vector unsigned char) vG, vgreen1); |
| vdst2 = |
| (vector unsigned char) vec_perm((vector unsigned char) vR, |
| (vector unsigned char) vR, |
| vredalpha2); |
| vdst2 = vec_perm(vdst2, (vector unsigned char) vB, vblue2); |
| vdst2 = vec_perm(vdst2, (vector unsigned char) vG, vgreen2); |
| |
| /* Alpha blend 8 pixels as ARGB */ |
| valpha = vec_perm(vsrc1, v0, valphaPermute); |
| VEC_MULTIPLY_ALPHA(vsrc1, vdst1, valpha, mergePermute, v1_16, |
| v8_16); |
| valpha = vec_perm(vsrc2, v0, valphaPermute); |
| VEC_MULTIPLY_ALPHA(vsrc2, vdst2, valpha, mergePermute, v1_16, |
| v8_16); |
| |
| /* Convert 8 pixels to 565 */ |
| vpixel = (vector unsigned short) vec_packpx((vector unsigned int) |
| vdst1, |
| (vector unsigned int) |
| vdst2); |
| vgpixel = (vector unsigned short) vec_perm(vdst1, vdst2, vgmerge); |
| vgpixel = vec_and(vgpixel, vfc); |
| vgpixel = vec_sl(vgpixel, v3_16); |
| vrpixel = vec_sl(vpixel, v1_16); |
| vrpixel = vec_and(vrpixel, vf800); |
| vbpixel = vec_and(vpixel, v3f); |
| vdst1 = |
| vec_or((vector unsigned char) vrpixel, |
| (vector unsigned char) vgpixel); |
| vdst1 = vec_or(vdst1, (vector unsigned char) vbpixel); |
| |
| /* Store 8 pixels */ |
| vec_st(vdst1, 0, dst); |
| |
| width -= 8; |
| dst += 16; |
| } |
| ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| #undef ONE_PIXEL_BLEND |
| src += srcskip; |
| dst += dstskip; |
| } |
| } |
| |
| static void |
| Blit32to32SurfaceAlphaKeyAltivec(SDL_BlitInfo * info) |
| { |
| 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; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| unsigned sA = info->a; |
| unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| Uint32 rgbmask = srcfmt->Rmask | srcfmt->Gmask | srcfmt->Bmask; |
| Uint32 ckey = info->colorkey; |
| vector unsigned char mergePermute; |
| vector unsigned char vsrcPermute; |
| vector unsigned char vdstPermute; |
| vector unsigned char vsdstPermute; |
| vector unsigned char valpha; |
| vector unsigned char valphamask; |
| vector unsigned char vbits; |
| vector unsigned char v0; |
| vector unsigned short v1; |
| vector unsigned short v8; |
| vector unsigned int vckey; |
| vector unsigned int vrgbmask; |
| |
| mergePermute = VEC_MERGE_PERMUTE(); |
| v0 = vec_splat_u8(0); |
| v1 = vec_splat_u16(1); |
| v8 = vec_splat_u16(8); |
| |
| /* set the alpha to 255 on the destination surf */ |
| valphamask = VEC_ALPHA_MASK(); |
| |
| vsrcPermute = calc_swizzle32(srcfmt, NULL); |
| vdstPermute = calc_swizzle32(NULL, dstfmt); |
| vsdstPermute = calc_swizzle32(dstfmt, NULL); |
| |
| /* set a vector full of alpha and 255-alpha */ |
| ((unsigned char *) &valpha)[0] = sA; |
| valpha = vec_splat(valpha, 0); |
| vbits = (vector unsigned char) vec_splat_s8(-1); |
| |
| ckey &= rgbmask; |
| ((unsigned int *) (char *) &vckey)[0] = ckey; |
| vckey = vec_splat(vckey, 0); |
| ((unsigned int *) (char *) &vrgbmask)[0] = rgbmask; |
| vrgbmask = vec_splat(vrgbmask, 0); |
| |
| while (height--) { |
| int width = info->dst_w; |
| #define ONE_PIXEL_BLEND(condition, widthvar) \ |
| while (condition) { \ |
| Uint32 Pixel; \ |
| unsigned sR, sG, sB, dR, dG, dB; \ |
| RETRIEVE_RGB_PIXEL(((Uint8 *)srcp), 4, Pixel); \ |
| if(sA && Pixel != ckey) { \ |
| RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB); \ |
| DISEMBLE_RGB(((Uint8 *)dstp), 4, dstfmt, Pixel, dR, dG, dB); \ |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| ASSEMBLE_RGBA(((Uint8 *)dstp), 4, dstfmt, dR, dG, dB, dA); \ |
| } \ |
| dstp++; \ |
| srcp++; \ |
| widthvar--; \ |
| } |
| ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| if (width > 0) { |
| int extrawidth = (width % 4); |
| vector unsigned char valigner = VEC_ALIGNER(srcp); |
| vector unsigned char vs = (vector unsigned char) vec_ld(0, srcp); |
| width -= extrawidth; |
| while (width) { |
| vector unsigned char vsel; |
| vector unsigned char voverflow; |
| vector unsigned char vd; |
| vector unsigned char vd_orig; |
| |
| /* s = *srcp */ |
| voverflow = (vector unsigned char) vec_ld(15, srcp); |
| vs = vec_perm(vs, voverflow, valigner); |
| |
| /* vsel is set for items that match the key */ |
| vsel = |
| (vector unsigned char) vec_and((vector unsigned int) vs, |
| vrgbmask); |
| vsel = (vector unsigned char) vec_cmpeq((vector unsigned int) |
| vsel, vckey); |
| |
| /* permute to source format */ |
| vs = vec_perm(vs, valpha, vsrcPermute); |
| |
| /* d = *dstp */ |
| vd = (vector unsigned char) vec_ld(0, dstp); |
| vd_orig = vd = vec_perm(vd, v0, vsdstPermute); |
| |
| VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| |
| /* set the alpha channel to full on */ |
| vd = vec_or(vd, valphamask); |
| |
| /* mask out color key */ |
| vd = vec_sel(vd, vd_orig, vsel); |
| |
| /* permute to dest format */ |
| vd = vec_perm(vd, vbits, vdstPermute); |
| |
| /* *dstp = res */ |
| vec_st((vector unsigned int) vd, 0, dstp); |
| |
| srcp += 4; |
| dstp += 4; |
| width -= 4; |
| vs = voverflow; |
| } |
| ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| } |
| #undef ONE_PIXEL_BLEND |
| |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| |
| |
| static void |
| Blit32to32PixelAlphaAltivec(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; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| vector unsigned char mergePermute; |
| vector unsigned char valphaPermute; |
| vector unsigned char vsrcPermute; |
| vector unsigned char vdstPermute; |
| vector unsigned char vsdstPermute; |
| vector unsigned char valphamask; |
| vector unsigned char vpixelmask; |
| vector unsigned char v0; |
| vector unsigned short v1; |
| vector unsigned short v8; |
| |
| v0 = vec_splat_u8(0); |
| v1 = vec_splat_u16(1); |
| v8 = vec_splat_u16(8); |
| mergePermute = VEC_MERGE_PERMUTE(); |
| valphamask = VEC_ALPHA_MASK(); |
| valphaPermute = vec_and(vec_lvsl(0, (int *) NULL), vec_splat_u8(0xC)); |
| vpixelmask = vec_nor(valphamask, v0); |
| vsrcPermute = calc_swizzle32(srcfmt, NULL); |
| vdstPermute = calc_swizzle32(NULL, dstfmt); |
| vsdstPermute = calc_swizzle32(dstfmt, NULL); |
| |
| while (height--) { |
| width = info->dst_w; |
| #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
| Uint32 Pixel; \ |
| unsigned sR, sG, sB, dR, dG, dB, sA, dA; \ |
| DISEMBLE_RGBA((Uint8 *)srcp, 4, srcfmt, Pixel, sR, sG, sB, sA); \ |
| if(sA) { \ |
| DISEMBLE_RGBA((Uint8 *)dstp, 4, dstfmt, Pixel, dR, dG, dB, dA); \ |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| ASSEMBLE_RGBA((Uint8 *)dstp, 4, dstfmt, dR, dG, dB, dA); \ |
| } \ |
| ++srcp; \ |
| ++dstp; \ |
| widthvar--; \ |
| } |
| ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| if (width > 0) { |
| /* vsrcPermute */ |
| /* vdstPermute */ |
| int extrawidth = (width % 4); |
| vector unsigned char valigner = VEC_ALIGNER(srcp); |
| vector unsigned char vs = (vector unsigned char) vec_ld(0, srcp); |
| width -= extrawidth; |
| while (width) { |
| vector unsigned char voverflow; |
| vector unsigned char vd; |
| vector unsigned char valpha; |
| vector unsigned char vdstalpha; |
| /* s = *srcp */ |
| voverflow = (vector unsigned char) vec_ld(15, srcp); |
| vs = vec_perm(vs, voverflow, valigner); |
| vs = vec_perm(vs, v0, vsrcPermute); |
| |
| valpha = vec_perm(vs, v0, valphaPermute); |
| |
| /* d = *dstp */ |
| vd = (vector unsigned char) vec_ld(0, dstp); |
| vd = vec_perm(vd, v0, vsdstPermute); |
| vdstalpha = vec_and(vd, valphamask); |
| |
| VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| |
| /* set the alpha to the dest alpha */ |
| vd = vec_and(vd, vpixelmask); |
| vd = vec_or(vd, vdstalpha); |
| vd = vec_perm(vd, v0, vdstPermute); |
| |
| /* *dstp = res */ |
| vec_st((vector unsigned int) vd, 0, dstp); |
| |
| srcp += 4; |
| dstp += 4; |
| width -= 4; |
| vs = voverflow; |
| |
| } |
| ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| } |
| srcp += srcskip; |
| dstp += dstskip; |
| #undef ONE_PIXEL_BLEND |
| } |
| } |
| |
| /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| static void |
| BlitRGBtoRGBPixelAlphaAltivec(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; |
| vector unsigned char mergePermute; |
| vector unsigned char valphaPermute; |
| vector unsigned char valphamask; |
| vector unsigned char vpixelmask; |
| vector unsigned char v0; |
| vector unsigned short v1; |
| vector unsigned short v8; |
| v0 = vec_splat_u8(0); |
| v1 = vec_splat_u16(1); |
| v8 = vec_splat_u16(8); |
| mergePermute = VEC_MERGE_PERMUTE(); |
| valphamask = VEC_ALPHA_MASK(); |
| valphaPermute = vec_and(vec_lvsl(0, (int *) NULL), vec_splat_u8(0xC)); |
| |
| |
| vpixelmask = vec_nor(valphamask, v0); |
| while (height--) { |
| width = info->dst_w; |
| #define ONE_PIXEL_BLEND(condition, widthvar) \ |
| while ((condition)) { \ |
| Uint32 dalpha; \ |
| Uint32 d; \ |
| Uint32 s1; \ |
| Uint32 d1; \ |
| Uint32 s = *srcp; \ |
| Uint32 alpha = s >> 24; \ |
| if(alpha) { \ |
| if(alpha == SDL_ALPHA_OPAQUE) { \ |
| *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); \ |
| } else { \ |
| d = *dstp; \ |
| dalpha = d & 0xff000000; \ |
| s1 = s & 0xff00ff; \ |
| d1 = d & 0xff00ff; \ |
| d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \ |
| s &= 0xff00; \ |
| d &= 0xff00; \ |
| d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ |
| *dstp = d1 | d | dalpha; \ |
| } \ |
| } \ |
| ++srcp; \ |
| ++dstp; \ |
| widthvar--; \ |
| } |
| ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| if (width > 0) { |
| int extrawidth = (width % 4); |
| vector unsigned char valigner = VEC_ALIGNER(srcp); |
| vector unsigned char vs = (vector unsigned char) vec_ld(0, srcp); |
| width -= extrawidth; |
| while (width) { |
| vector unsigned char voverflow; |
| vector unsigned char vd; |
| vector unsigned char valpha; |
| vector unsigned char vdstalpha; |
| /* s = *srcp */ |
| voverflow = (vector unsigned char) vec_ld(15, srcp); |
| vs = vec_perm(vs, voverflow, valigner); |
| |
| valpha = vec_perm(vs, v0, valphaPermute); |
| |
| /* d = *dstp */ |
| vd = (vector unsigned char) vec_ld(0, dstp); |
| vdstalpha = vec_and(vd, valphamask); |
| |
| VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| |
| /* set the alpha to the dest alpha */ |
| vd = vec_and(vd, vpixelmask); |
| vd = vec_or(vd, vdstalpha); |
| |
| /* *dstp = res */ |
| vec_st((vector unsigned int) vd, 0, dstp); |
| |
| srcp += 4; |
| dstp += 4; |
| width -= 4; |
| vs = voverflow; |
| } |
| ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| } |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| #undef ONE_PIXEL_BLEND |
| } |
| |
| static void |
| Blit32to32SurfaceAlphaAltivec(SDL_BlitInfo * info) |
| { |
| /* XXX : 6 */ |
| 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; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| unsigned sA = info->a; |
| unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| vector unsigned char mergePermute; |
| vector unsigned char vsrcPermute; |
| vector unsigned char vdstPermute; |
| vector unsigned char vsdstPermute; |
| vector unsigned char valpha; |
| vector unsigned char valphamask; |
| vector unsigned char vbits; |
| vector unsigned short v1; |
| vector unsigned short v8; |
| |
| mergePermute = VEC_MERGE_PERMUTE(); |
| v1 = vec_splat_u16(1); |
| v8 = vec_splat_u16(8); |
| |
| /* set the alpha to 255 on the destination surf */ |
| valphamask = VEC_ALPHA_MASK(); |
| |
| vsrcPermute = calc_swizzle32(srcfmt, NULL); |
| vdstPermute = calc_swizzle32(NULL, dstfmt); |
| vsdstPermute = calc_swizzle32(dstfmt, NULL); |
| |
| /* set a vector full of alpha and 255-alpha */ |
| ((unsigned char *) &valpha)[0] = sA; |
| valpha = vec_splat(valpha, 0); |
| vbits = (vector unsigned char) vec_splat_s8(-1); |
| |
| while (height--) { |
| int width = info->dst_w; |
| #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
| Uint32 Pixel; \ |
| unsigned sR, sG, sB, dR, dG, dB; \ |
| DISEMBLE_RGB(((Uint8 *)srcp), 4, srcfmt, Pixel, sR, sG, sB); \ |
| DISEMBLE_RGB(((Uint8 *)dstp), 4, dstfmt, Pixel, dR, dG, dB); \ |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
| ASSEMBLE_RGBA(((Uint8 *)dstp), 4, dstfmt, dR, dG, dB, dA); \ |
| ++srcp; \ |
| ++dstp; \ |
| widthvar--; \ |
| } |
| ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| if (width > 0) { |
| int extrawidth = (width % 4); |
| vector unsigned char valigner = VEC_ALIGNER(srcp); |
| vector unsigned char vs = (vector unsigned char) vec_ld(0, srcp); |
| width -= extrawidth; |
| while (width) { |
| vector unsigned char voverflow; |
| vector unsigned char vd; |
| |
| /* s = *srcp */ |
| voverflow = (vector unsigned char) vec_ld(15, srcp); |
| vs = vec_perm(vs, voverflow, valigner); |
| vs = vec_perm(vs, valpha, vsrcPermute); |
| |
| /* d = *dstp */ |
| vd = (vector unsigned char) vec_ld(0, dstp); |
| vd = vec_perm(vd, vd, vsdstPermute); |
| |
| VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| |
| /* set the alpha channel to full on */ |
| vd = vec_or(vd, valphamask); |
| vd = vec_perm(vd, vbits, vdstPermute); |
| |
| /* *dstp = res */ |
| vec_st((vector unsigned int) vd, 0, dstp); |
| |
| srcp += 4; |
| dstp += 4; |
| width -= 4; |
| vs = voverflow; |
| } |
| ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| } |
| #undef ONE_PIXEL_BLEND |
| |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| |
| } |
| |
| |
| /* fast RGB888->(A)RGB888 blending */ |
| static void |
| BlitRGBtoRGBSurfaceAlphaAltivec(SDL_BlitInfo * info) |
| { |
| unsigned alpha = info->a; |
| 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; |
| vector unsigned char mergePermute; |
| vector unsigned char valpha; |
| vector unsigned char valphamask; |
| vector unsigned short v1; |
| vector unsigned short v8; |
| |
| mergePermute = VEC_MERGE_PERMUTE(); |
| v1 = vec_splat_u16(1); |
| v8 = vec_splat_u16(8); |
| |
| /* set the alpha to 255 on the destination surf */ |
| valphamask = VEC_ALPHA_MASK(); |
| |
| /* set a vector full of alpha and 255-alpha */ |
| ((unsigned char *) &valpha)[0] = alpha; |
| valpha = vec_splat(valpha, 0); |
| |
| while (height--) { |
| int width = info->dst_w; |
| #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
| Uint32 s = *srcp; \ |
| Uint32 d = *dstp; \ |
| Uint32 s1 = s & 0xff00ff; \ |
| Uint32 d1 = d & 0xff00ff; \ |
| d1 = (d1 + ((s1 - d1) * alpha >> 8)) \ |
| & 0xff00ff; \ |
| s &= 0xff00; \ |
| d &= 0xff00; \ |
| d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ |
| *dstp = d1 | d | 0xff000000; \ |
| ++srcp; \ |
| ++dstp; \ |
| widthvar--; \ |
| } |
| ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
| if (width > 0) { |
| int extrawidth = (width % 4); |
| vector unsigned char valigner = VEC_ALIGNER(srcp); |
| vector unsigned char vs = (vector unsigned char) vec_ld(0, srcp); |
| width -= extrawidth; |
| while (width) { |
| vector unsigned char voverflow; |
| vector unsigned char vd; |
| |
| /* s = *srcp */ |
| voverflow = (vector unsigned char) vec_ld(15, srcp); |
| vs = vec_perm(vs, voverflow, valigner); |
| |
| /* d = *dstp */ |
| vd = (vector unsigned char) vec_ld(0, dstp); |
| |
| VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
| |
| /* set the alpha channel to full on */ |
| vd = vec_or(vd, valphamask); |
| |
| /* *dstp = res */ |
| vec_st((vector unsigned int) vd, 0, dstp); |
| |
| srcp += 4; |
| dstp += 4; |
| width -= 4; |
| vs = voverflow; |
| } |
| ONE_PIXEL_BLEND((extrawidth), extrawidth); |
| } |
| #undef ONE_PIXEL_BLEND |
| |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| |
| #if __MWERKS__ |
| #pragma altivec_model off |
| #endif |
| #endif /* SDL_ALTIVEC_BLITTERS */ |
| |
| /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
| static void |
| BlitRGBtoRGBSurfaceAlpha128(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; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| Uint32 s = *srcp++; |
| Uint32 d = *dstp; |
| *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
| + (s & d & 0x00010101)) | 0xff000000; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| |
| /* fast RGB888->(A)RGB888 blending with surface alpha */ |
| static void |
| BlitRGBtoRGBSurfaceAlpha(SDL_BlitInfo * info) |
| { |
| unsigned alpha = info->a; |
| if (alpha == 128) { |
| BlitRGBtoRGBSurfaceAlpha128(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 s; |
| Uint32 d; |
| Uint32 s1; |
| Uint32 d1; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| s = *srcp; |
| d = *dstp; |
| s1 = s & 0xff00ff; |
| d1 = d & 0xff00ff; |
| d1 = (d1 + ((s1 - d1) * alpha >> 8)) |
| & 0xff00ff; |
| s &= 0xff00; |
| d &= 0xff00; |
| d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
| *dstp = d1 | d | 0xff000000; |
| ++srcp; |
| ++dstp; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| } |
| |
| /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| static void |
| BlitRGBtoRGBPixelAlpha(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; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| Uint32 dalpha; |
| Uint32 d; |
| Uint32 s1; |
| Uint32 d1; |
| Uint32 s = *srcp; |
| Uint32 alpha = s >> 24; |
| /* FIXME: Here we special-case opaque alpha since the |
| compositioning used (>>8 instead of /255) doesn't handle |
| it correctly. Also special-case alpha=0 for speed? |
| Benchmark this! */ |
| if(alpha) { |
| if(alpha == SDL_ALPHA_OPAQUE) { |
| *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); |
| } else { |
| /* |
| * take out the middle component (green), and process |
| * the other two in parallel. One multiply less. |
| */ |
| d = *dstp; |
| dalpha = d & 0xff000000; |
| s1 = s & 0xff00ff; |
| d1 = d & 0xff00ff; |
| d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; |
| s &= 0xff00; |
| d &= 0xff00; |
| d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
| *dstp = d1 | d | dalpha; |
| } |
| } |
| ++srcp; |
| ++dstp; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| |
| #ifdef __3dNOW__ |
| /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */ |
| static void |
| BlitRGBtoRGBPixelAlphaMMX3DNOW(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; |
| SDL_PixelFormat *sf = info->src_fmt; |
| Uint32 chanmask = sf->Rmask | sf->Gmask | sf->Bmask; |
| Uint32 amask = sf->Amask; |
| Uint32 ashift = sf->Ashift; |
| Uint64 multmask; |
| |
| __m64 src1, dst1, mm_alpha, mm_zero, dmask; |
| |
| mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
| multmask = 0xFFFF; |
| multmask <<= (ashift * 2); |
| multmask = ~multmask; |
| dmask = *(__m64 *) & multmask; /* dst alpha mask -> dmask */ |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| Uint32 alpha; |
| |
| _m_prefetch(srcp + 16); |
| _m_prefetch(dstp + 16); |
| |
| alpha = *srcp & amask; |
| if (alpha == 0) { |
| /* do nothing */ |
| } else if (alpha == amask) { |
| /* copy RGB, keep dst alpha */ |
| *dstp = (*srcp & chanmask) | (*dstp & ~chanmask); |
| } else { |
| src1 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src1 (0000ARGB)*/ |
| src1 = _mm_unpacklo_pi8(src1, mm_zero); /* 0A0R0G0B -> src1 */ |
| |
| dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
| dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
| |
| mm_alpha = _mm_cvtsi32_si64(alpha); /* alpha -> mm_alpha (0000000A) */ |
| mm_alpha = _mm_srli_si64(mm_alpha, ashift); /* mm_alpha >> ashift -> mm_alpha(0000000A) */ |
| mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| mm_alpha = _mm_and_si64(mm_alpha, dmask); /* 000A0A0A -> mm_alpha, preserve dst alpha on add */ |
| |
| /* blend */ |
| src1 = _mm_sub_pi16(src1, dst1);/* src - dst -> src1 */ |
| src1 = _mm_mullo_pi16(src1, mm_alpha); /* (src - dst) * alpha -> src1 */ |
| src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1(000R0G0B) */ |
| dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1(dst) -> dst1(0A0R0G0B) */ |
| dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
| |
| *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
| } |
| ++srcp; |
| ++dstp; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| _mm_empty(); |
| } |
| |
| #endif /* __MMX__ */ |
| |
| /* 16bpp special case for per-surface alpha=50%: blend 2 pixels in parallel */ |
| |
| /* blend a single 16 bit pixel at 50% */ |
| #define BLEND16_50(d, s, mask) \ |
| ((((s & mask) + (d & mask)) >> 1) + (s & d & (~mask & 0xffff))) |
| |
| /* blend two 16 bit pixels at 50% */ |
| #define BLEND2x16_50(d, s, mask) \ |
| (((s & (mask | mask << 16)) >> 1) + ((d & (mask | mask << 16)) >> 1) \ |
| + (s & d & (~(mask | mask << 16)))) |
| |
| static void |
| Blit16to16SurfaceAlpha128(SDL_BlitInfo * info, Uint16 mask) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint16 *srcp = (Uint16 *) info->src; |
| int srcskip = info->src_skip >> 1; |
| Uint16 *dstp = (Uint16 *) info->dst; |
| int dstskip = info->dst_skip >> 1; |
| |
| while (height--) { |
| if (((uintptr_t) srcp ^ (uintptr_t) dstp) & 2) { |
| /* |
| * Source and destination not aligned, pipeline it. |
| * This is mostly a win for big blits but no loss for |
| * small ones |
| */ |
| Uint32 prev_sw; |
| int w = width; |
| |
| /* handle odd destination */ |
| if ((uintptr_t) dstp & 2) { |
| Uint16 d = *dstp, s = *srcp; |
| *dstp = BLEND16_50(d, s, mask); |
| dstp++; |
| srcp++; |
| w--; |
| } |
| srcp++; /* srcp is now 32-bit aligned */ |
| |
| /* bootstrap pipeline with first halfword */ |
| prev_sw = ((Uint32 *) srcp)[-1]; |
| |
| while (w > 1) { |
| Uint32 sw, dw, s; |
| sw = *(Uint32 *) srcp; |
| dw = *(Uint32 *) dstp; |
| #if SDL_BYTEORDER == SDL_BIG_ENDIAN |
| s = (prev_sw << 16) + (sw >> 16); |
| #else |
| s = (prev_sw >> 16) + (sw << 16); |
| #endif |
| prev_sw = sw; |
| *(Uint32 *) dstp = BLEND2x16_50(dw, s, mask); |
| dstp += 2; |
| srcp += 2; |
| w -= 2; |
| } |
| |
| /* final pixel if any */ |
| if (w) { |
| Uint16 d = *dstp, s; |
| #if SDL_BYTEORDER == SDL_BIG_ENDIAN |
| s = (Uint16) prev_sw; |
| #else |
| s = (Uint16) (prev_sw >> 16); |
| #endif |
| *dstp = BLEND16_50(d, s, mask); |
| srcp++; |
| dstp++; |
| } |
| srcp += srcskip - 1; |
| dstp += dstskip; |
| } else { |
| /* source and destination are aligned */ |
| int w = width; |
| |
| /* first odd pixel? */ |
| if ((uintptr_t) srcp & 2) { |
| Uint16 d = *dstp, s = *srcp; |
| *dstp = BLEND16_50(d, s, mask); |
| srcp++; |
| dstp++; |
| w--; |
| } |
| /* srcp and dstp are now 32-bit aligned */ |
| |
| while (w > 1) { |
| Uint32 sw = *(Uint32 *) srcp; |
| Uint32 dw = *(Uint32 *) dstp; |
| *(Uint32 *) dstp = BLEND2x16_50(dw, sw, mask); |
| srcp += 2; |
| dstp += 2; |
| w -= 2; |
| } |
| |
| /* last odd pixel? */ |
| if (w) { |
| Uint16 d = *dstp, s = *srcp; |
| *dstp = BLEND16_50(d, s, mask); |
| srcp++; |
| dstp++; |
| } |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| } |
| |
| #ifdef __MMX__ |
| |
| /* fast RGB565->RGB565 blending with surface alpha */ |
| static void |
| Blit565to565SurfaceAlphaMMX(SDL_BlitInfo * info) |
| { |
| unsigned alpha = info->a; |
| if (alpha == 128) { |
| Blit16to16SurfaceAlpha128(info, 0xf7de); |
| } else { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint16 *srcp = (Uint16 *) info->src; |
| int srcskip = info->src_skip >> 1; |
| Uint16 *dstp = (Uint16 *) info->dst; |
| int dstskip = info->dst_skip >> 1; |
| Uint32 s, d; |
| |
| __m64 src1, dst1, src2, dst2, gmask, bmask, mm_res, mm_alpha; |
| |
| alpha &= ~(1 + 2 + 4); /* cut alpha to get the exact same behaviour */ |
| mm_alpha = _mm_set_pi32(0, alpha); /* 0000000A -> mm_alpha */ |
| alpha >>= 3; /* downscale alpha to 5 bits */ |
| |
| mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| /* position alpha to allow for mullo and mulhi on diff channels |
| to reduce the number of operations */ |
| mm_alpha = _mm_slli_si64(mm_alpha, 3); |
| |
| /* Setup the 565 color channel masks */ |
| gmask = _mm_set_pi32(0x07E007E0, 0x07E007E0); /* MASKGREEN -> gmask */ |
| bmask = _mm_set_pi32(0x001F001F, 0x001F001F); /* MASKBLUE -> bmask */ |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP_124( |
| { |
| s = *srcp++; |
| d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x07e0f81f; |
| d = (d | d << 16) & 0x07e0f81f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x07e0f81f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| },{ |
| s = *srcp++; |
| d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x07e0f81f; |
| d = (d | d << 16) & 0x07e0f81f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x07e0f81f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| s = *srcp++; |
| d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x07e0f81f; |
| d = (d | d << 16) & 0x07e0f81f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x07e0f81f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| },{ |
| src1 = *(__m64*)srcp; /* 4 src pixels -> src1 */ |
| dst1 = *(__m64*)dstp; /* 4 dst pixels -> dst1 */ |
| |
| /* red */ |
| src2 = src1; |
| src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 [000r 000r 000r 000r] */ |
| |
| dst2 = dst1; |
| dst2 = _mm_srli_pi16(dst2, 11); /* dst2 >> 11 -> dst2 [000r 000r 000r 000r] */ |
| |
| /* blend */ |
| src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
| dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| dst2 = _mm_slli_pi16(dst2, 11); /* dst2 << 11 -> dst2 */ |
| |
| mm_res = dst2; /* RED -> mm_res */ |
| |
| /* green -- process the bits in place */ |
| src2 = src1; |
| src2 = _mm_and_si64(src2, gmask); /* src & MASKGREEN -> src2 */ |
| |
| dst2 = dst1; |
| dst2 = _mm_and_si64(dst2, gmask); /* dst & MASKGREEN -> dst2 */ |
| |
| /* blend */ |
| src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
| dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| |
| mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN -> mm_res */ |
| |
| /* blue */ |
| src2 = src1; |
| src2 = _mm_and_si64(src2, bmask); /* src & MASKBLUE -> src2[000b 000b 000b 000b] */ |
| |
| dst2 = dst1; |
| dst2 = _mm_and_si64(dst2, bmask); /* dst & MASKBLUE -> dst2[000b 000b 000b 000b] */ |
| |
| /* blend */ |
| src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
| dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| dst2 = _mm_and_si64(dst2, bmask); /* dst2 & MASKBLUE -> dst2 */ |
| |
| mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN | BLUE -> mm_res */ |
| |
| *(__m64*)dstp = mm_res; /* mm_res -> 4 dst pixels */ |
| |
| srcp += 4; |
| dstp += 4; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| _mm_empty(); |
| } |
| } |
| |
| /* fast RGB555->RGB555 blending with surface alpha */ |
| static void |
| Blit555to555SurfaceAlphaMMX(SDL_BlitInfo * info) |
| { |
| unsigned alpha = info->a; |
| if (alpha == 128) { |
| Blit16to16SurfaceAlpha128(info, 0xfbde); |
| } else { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint16 *srcp = (Uint16 *) info->src; |
| int srcskip = info->src_skip >> 1; |
| Uint16 *dstp = (Uint16 *) info->dst; |
| int dstskip = info->dst_skip >> 1; |
| Uint32 s, d; |
| |
| __m64 src1, dst1, src2, dst2, rmask, gmask, bmask, mm_res, mm_alpha; |
| |
| alpha &= ~(1 + 2 + 4); /* cut alpha to get the exact same behaviour */ |
| mm_alpha = _mm_set_pi32(0, alpha); /* 0000000A -> mm_alpha */ |
| alpha >>= 3; /* downscale alpha to 5 bits */ |
| |
| mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
| mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
| /* position alpha to allow for mullo and mulhi on diff channels |
| to reduce the number of operations */ |
| mm_alpha = _mm_slli_si64(mm_alpha, 3); |
| |
| /* Setup the 555 color channel masks */ |
| rmask = _mm_set_pi32(0x7C007C00, 0x7C007C00); /* MASKRED -> rmask */ |
| gmask = _mm_set_pi32(0x03E003E0, 0x03E003E0); /* MASKGREEN -> gmask */ |
| bmask = _mm_set_pi32(0x001F001F, 0x001F001F); /* MASKBLUE -> bmask */ |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP_124( |
| { |
| s = *srcp++; |
| d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x03e07c1f; |
| d = (d | d << 16) & 0x03e07c1f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x03e07c1f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| },{ |
| s = *srcp++; |
| d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x03e07c1f; |
| d = (d | d << 16) & 0x03e07c1f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x03e07c1f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| s = *srcp++; |
| d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x03e07c1f; |
| d = (d | d << 16) & 0x03e07c1f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x03e07c1f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| },{ |
| src1 = *(__m64*)srcp; /* 4 src pixels -> src1 */ |
| dst1 = *(__m64*)dstp; /* 4 dst pixels -> dst1 */ |
| |
| /* red -- process the bits in place */ |
| src2 = src1; |
| src2 = _mm_and_si64(src2, rmask); /* src & MASKRED -> src2 */ |
| |
| dst2 = dst1; |
| dst2 = _mm_and_si64(dst2, rmask); /* dst & MASKRED -> dst2 */ |
| |
| /* blend */ |
| src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
| dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| dst2 = _mm_and_si64(dst2, rmask); /* dst2 & MASKRED -> dst2 */ |
| |
| mm_res = dst2; /* RED -> mm_res */ |
| |
| /* green -- process the bits in place */ |
| src2 = src1; |
| src2 = _mm_and_si64(src2, gmask); /* src & MASKGREEN -> src2 */ |
| |
| dst2 = dst1; |
| dst2 = _mm_and_si64(dst2, gmask); /* dst & MASKGREEN -> dst2 */ |
| |
| /* blend */ |
| src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
| dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| |
| mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN -> mm_res */ |
| |
| /* blue */ |
| src2 = src1; /* src -> src2 */ |
| src2 = _mm_and_si64(src2, bmask); /* src & MASKBLUE -> src2[000b 000b 000b 000b] */ |
| |
| dst2 = dst1; /* dst -> dst2 */ |
| dst2 = _mm_and_si64(dst2, bmask); /* dst & MASKBLUE -> dst2[000b 000b 000b 000b] */ |
| |
| /* blend */ |
| src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
| src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
| src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
| dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
| dst2 = _mm_and_si64(dst2, bmask); /* dst2 & MASKBLUE -> dst2 */ |
| |
| mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN | BLUE -> mm_res */ |
| |
| *(__m64*)dstp = mm_res; /* mm_res -> 4 dst pixels */ |
| |
| srcp += 4; |
| dstp += 4; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| _mm_empty(); |
| } |
| } |
| |
| #endif /* __MMX__ */ |
| |
| /* fast RGB565->RGB565 blending with surface alpha */ |
| static void |
| Blit565to565SurfaceAlpha(SDL_BlitInfo * info) |
| { |
| unsigned alpha = info->a; |
| if (alpha == 128) { |
| Blit16to16SurfaceAlpha128(info, 0xf7de); |
| } else { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint16 *srcp = (Uint16 *) info->src; |
| int srcskip = info->src_skip >> 1; |
| Uint16 *dstp = (Uint16 *) info->dst; |
| int dstskip = info->dst_skip >> 1; |
| alpha >>= 3; /* downscale alpha to 5 bits */ |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| Uint32 s = *srcp++; |
| Uint32 d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x07e0f81f; |
| d = (d | d << 16) & 0x07e0f81f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x07e0f81f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| } |
| |
| /* fast RGB555->RGB555 blending with surface alpha */ |
| static void |
| Blit555to555SurfaceAlpha(SDL_BlitInfo * info) |
| { |
| unsigned alpha = info->a; /* downscale alpha to 5 bits */ |
| if (alpha == 128) { |
| Blit16to16SurfaceAlpha128(info, 0xfbde); |
| } else { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint16 *srcp = (Uint16 *) info->src; |
| int srcskip = info->src_skip >> 1; |
| Uint16 *dstp = (Uint16 *) info->dst; |
| int dstskip = info->dst_skip >> 1; |
| alpha >>= 3; /* downscale alpha to 5 bits */ |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| Uint32 s = *srcp++; |
| Uint32 d = *dstp; |
| /* |
| * shift out the middle component (green) to |
| * the high 16 bits, and process all three RGB |
| * components at the same time. |
| */ |
| s = (s | s << 16) & 0x03e07c1f; |
| d = (d | d << 16) & 0x03e07c1f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x03e07c1f; |
| *dstp++ = (Uint16)(d | d >> 16); |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| } |
| |
| /* fast ARGB8888->RGB565 blending with pixel alpha */ |
| static void |
| BlitARGBto565PixelAlpha(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint32 *srcp = (Uint32 *) info->src; |
| int srcskip = info->src_skip >> 2; |
| Uint16 *dstp = (Uint16 *) info->dst; |
| int dstskip = info->dst_skip >> 1; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| Uint32 s = *srcp; |
| unsigned alpha = s >> 27; /* downscale alpha to 5 bits */ |
| /* FIXME: Here we special-case opaque alpha since the |
| compositioning used (>>8 instead of /255) doesn't handle |
| it correctly. Also special-case alpha=0 for speed? |
| Benchmark this! */ |
| if(alpha) { |
| if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
| *dstp = (Uint16)((s >> 8 & 0xf800) + (s >> 5 & 0x7e0) + (s >> 3 & 0x1f)); |
| } else { |
| Uint32 d = *dstp; |
| /* |
| * convert source and destination to G0RAB65565 |
| * and blend all components at the same time |
| */ |
| s = ((s & 0xfc00) << 11) + (s >> 8 & 0xf800) |
| + (s >> 3 & 0x1f); |
| d = (d | d << 16) & 0x07e0f81f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x07e0f81f; |
| *dstp = (Uint16)(d | d >> 16); |
| } |
| } |
| srcp++; |
| dstp++; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| |
| /* fast ARGB8888->RGB555 blending with pixel alpha */ |
| static void |
| BlitARGBto555PixelAlpha(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint32 *srcp = (Uint32 *) info->src; |
| int srcskip = info->src_skip >> 2; |
| Uint16 *dstp = (Uint16 *) info->dst; |
| int dstskip = info->dst_skip >> 1; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4({ |
| unsigned alpha; |
| Uint32 s = *srcp; |
| alpha = s >> 27; /* downscale alpha to 5 bits */ |
| /* FIXME: Here we special-case opaque alpha since the |
| compositioning used (>>8 instead of /255) doesn't handle |
| it correctly. Also special-case alpha=0 for speed? |
| Benchmark this! */ |
| if(alpha) { |
| if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
| *dstp = (Uint16)((s >> 9 & 0x7c00) + (s >> 6 & 0x3e0) + (s >> 3 & 0x1f)); |
| } else { |
| Uint32 d = *dstp; |
| /* |
| * convert source and destination to G0RAB65565 |
| * and blend all components at the same time |
| */ |
| s = ((s & 0xf800) << 10) + (s >> 9 & 0x7c00) |
| + (s >> 3 & 0x1f); |
| d = (d | d << 16) & 0x03e07c1f; |
| d += (s - d) * alpha >> 5; |
| d &= 0x03e07c1f; |
| *dstp = (Uint16)(d | d >> 16); |
| } |
| } |
| srcp++; |
| dstp++; |
| }, width); |
| /* *INDENT-ON* */ |
| srcp += srcskip; |
| dstp += dstskip; |
| } |
| } |
| |
| /* General (slow) N->N blending with per-surface alpha */ |
| static void |
| BlitNtoNSurfaceAlpha(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint8 *src = info->src; |
| int srcskip = info->src_skip; |
| Uint8 *dst = info->dst; |
| int dstskip = info->dst_skip; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| int srcbpp = srcfmt->BytesPerPixel; |
| int dstbpp = dstfmt->BytesPerPixel; |
| unsigned sA = info->a; |
| unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| |
| if (sA) { |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4( |
| { |
| Uint32 Pixel; |
| unsigned sR; |
| unsigned sG; |
| unsigned sB; |
| unsigned dR; |
| unsigned dG; |
| unsigned dB; |
| DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
| DISEMBLE_RGB(dst, dstbpp, dstfmt, Pixel, dR, dG, dB); |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
| src += srcbpp; |
| dst += dstbpp; |
| }, |
| width); |
| /* *INDENT-ON* */ |
| src += srcskip; |
| dst += dstskip; |
| } |
| } |
| } |
| |
| /* General (slow) colorkeyed N->N blending with per-surface alpha */ |
| static void |
| BlitNtoNSurfaceAlphaKey(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint8 *src = info->src; |
| int srcskip = info->src_skip; |
| Uint8 *dst = info->dst; |
| int dstskip = info->dst_skip; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| Uint32 ckey = info->colorkey; |
| int srcbpp = srcfmt->BytesPerPixel; |
| int dstbpp = dstfmt->BytesPerPixel; |
| unsigned sA = info->a; |
| unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
| |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4( |
| { |
| Uint32 Pixel; |
| unsigned sR; |
| unsigned sG; |
| unsigned sB; |
| unsigned dR; |
| unsigned dG; |
| unsigned dB; |
| RETRIEVE_RGB_PIXEL(src, srcbpp, Pixel); |
| if(sA && Pixel != ckey) { |
| RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB); |
| DISEMBLE_RGB(dst, dstbpp, dstfmt, Pixel, dR, dG, dB); |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
| } |
| src += srcbpp; |
| dst += dstbpp; |
| }, |
| width); |
| /* *INDENT-ON* */ |
| src += srcskip; |
| dst += dstskip; |
| } |
| } |
| |
| /* General (slow) N->N blending with pixel alpha */ |
| static void |
| BlitNtoNPixelAlpha(SDL_BlitInfo * info) |
| { |
| int width = info->dst_w; |
| int height = info->dst_h; |
| Uint8 *src = info->src; |
| int srcskip = info->src_skip; |
| Uint8 *dst = info->dst; |
| int dstskip = info->dst_skip; |
| SDL_PixelFormat *srcfmt = info->src_fmt; |
| SDL_PixelFormat *dstfmt = info->dst_fmt; |
| |
| int srcbpp; |
| int dstbpp; |
| |
| /* Set up some basic variables */ |
| srcbpp = srcfmt->BytesPerPixel; |
| dstbpp = dstfmt->BytesPerPixel; |
| |
| /* FIXME: for 8bpp source alpha, this doesn't get opaque values |
| quite right. for <8bpp source alpha, it gets them very wrong |
| (check all macros!) |
| It is unclear whether there is a good general solution that doesn't |
| need a branch (or a divide). */ |
| while (height--) { |
| /* *INDENT-OFF* */ |
| DUFFS_LOOP4( |
| { |
| Uint32 Pixel; |
| unsigned sR; |
| unsigned sG; |
| unsigned sB; |
| unsigned dR; |
| unsigned dG; |
| unsigned dB; |
| unsigned sA; |
| unsigned dA; |
| DISEMBLE_RGBA(src, srcbpp, srcfmt, Pixel, sR, sG, sB, sA); |
| if(sA) { |
| DISEMBLE_RGBA(dst, dstbpp, dstfmt, Pixel, dR, dG, dB, dA); |
| ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
| ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
| } |
| src += srcbpp; |
| dst += dstbpp; |
| }, |
| width); |
| /* *INDENT-ON* */ |
| src += srcskip; |
| dst += dstskip; |
| } |
| } |
| |
| |
| SDL_BlitFunc |
| SDL_CalculateBlitA(SDL_Surface * surface) |
| { |
| SDL_PixelFormat *sf = surface->format; |
| SDL_PixelFormat *df = surface->map->dst->format; |
| |
| switch (surface->map->info.flags & ~SDL_COPY_RLE_MASK) { |
| case SDL_COPY_BLEND: |
| /* Per-pixel alpha blits */ |
| switch (df->BytesPerPixel) { |
| case 1: |
| return BlitNto1PixelAlpha; |
| |
| case 2: |
| #if SDL_ALTIVEC_BLITTERS |
| if (sf->BytesPerPixel == 4 |
| && df->Gmask == 0x7e0 && df->Bmask == 0x1f |
| && SDL_HasAltiVec()) |
| return Blit32to565PixelAlphaAltivec; |
| else |
| #endif |
| if (sf->BytesPerPixel == 4 && sf->Amask == 0xff000000 |
| && sf->Gmask == 0xff00 |
| && ((sf->Rmask == 0xff && df->Rmask == 0x1f) |
| || (sf->Bmask == 0xff && df->Bmask == 0x1f))) { |
| if (df->Gmask == 0x7e0) |
| return BlitARGBto565PixelAlpha; |
| else if (df->Gmask == 0x3e0) |
| return BlitARGBto555PixelAlpha; |
| } |
| return BlitNtoNPixelAlpha; |
| |
| case 4: |
| if (sf->Rmask == df->Rmask |
| && sf->Gmask == df->Gmask |
| && sf->Bmask == df->Bmask && sf->BytesPerPixel == 4) { |
| #if defined(__MMX__) || defined(__3dNOW__) |
| if (sf->Rshift % 8 == 0 |
| && sf->Gshift % 8 == 0 |
| && sf->Bshift % 8 == 0 |
| && sf->Ashift % 8 == 0 && sf->Aloss == 0) { |
| #ifdef __3dNOW__ |
| if (SDL_Has3DNow()) |
| return BlitRGBtoRGBPixelAlphaMMX3DNOW; |
| #endif |
| #ifdef __MMX__ |
| if (SDL_HasMMX()) |
| return BlitRGBtoRGBPixelAlphaMMX; |
| #endif |
| } |
| #endif /* __MMX__ || __3dNOW__ */ |
| if (sf->Amask == 0xff000000) { |
| #if SDL_ALTIVEC_BLITTERS |
| if (SDL_HasAltiVec()) |
| return BlitRGBtoRGBPixelAlphaAltivec; |
| #endif |
| return BlitRGBtoRGBPixelAlpha; |
| } |
| } |
| #if SDL_ALTIVEC_BLITTERS |
| if (sf->Amask && sf->BytesPerPixel == 4 && SDL_HasAltiVec()) |
| return Blit32to32PixelAlphaAltivec; |
| else |
| #endif |
| return BlitNtoNPixelAlpha; |
| |
| case 3: |
| default: |
| return BlitNtoNPixelAlpha; |
| } |
| break; |
| |
| case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: |
| if (sf->Amask == 0) { |
| /* Per-surface alpha blits */ |
| switch (df->BytesPerPixel) { |
| case 1: |
| return BlitNto1SurfaceAlpha; |
| |
| case 2: |
| if (surface->map->identity) { |
| if (df->Gmask == 0x7e0) { |
| #ifdef __MMX__ |
| if (SDL_HasMMX()) |
| return Blit565to565SurfaceAlphaMMX; |
| else |
| #endif |
| return Blit565to565SurfaceAlpha; |
| } else if (df->Gmask == 0x3e0) { |
| #ifdef __MMX__ |
| if (SDL_HasMMX()) |
| return Blit555to555SurfaceAlphaMMX; |
| else |
| #endif |
| return Blit555to555SurfaceAlpha; |
| } |
| } |
| return BlitNtoNSurfaceAlpha; |
| |
| case 4: |
| if (sf->Rmask == df->Rmask |
| && sf->Gmask == df->Gmask |
| && sf->Bmask == df->Bmask && sf->BytesPerPixel == 4) { |
| #ifdef __MMX__ |
| if (sf->Rshift % 8 == 0 |
| && sf->Gshift % 8 == 0 |
| && sf->Bshift % 8 == 0 && SDL_HasMMX()) |
| return BlitRGBtoRGBSurfaceAlphaMMX; |
| #endif |
| if ((sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff) { |
| #if SDL_ALTIVEC_BLITTERS |
| if (SDL_HasAltiVec()) |
| return BlitRGBtoRGBSurfaceAlphaAltivec; |
| #endif |
| return BlitRGBtoRGBSurfaceAlpha; |
| } |
| } |
| #if SDL_ALTIVEC_BLITTERS |
| if ((sf->BytesPerPixel == 4) && SDL_HasAltiVec()) |
| return Blit32to32SurfaceAlphaAltivec; |
| else |
| #endif |
| return BlitNtoNSurfaceAlpha; |
| |
| case 3: |
| default: |
| return BlitNtoNSurfaceAlpha; |
| } |
| } |
| break; |
| |
| case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND: |
| if (sf->Amask == 0) { |
| if (df->BytesPerPixel == 1) |
| return BlitNto1SurfaceAlphaKey; |
| else |
| #if SDL_ALTIVEC_BLITTERS |
| if (sf->BytesPerPixel == 4 && df->BytesPerPixel == 4 && |
| SDL_HasAltiVec()) |
| return Blit32to32SurfaceAlphaKeyAltivec; |
| else |
| #endif |
| return BlitNtoNSurfaceAlphaKey; |
| } |
| break; |
| } |
| |
| return NULL; |
| } |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |