Mercurial > sdl-ios-xcode
annotate src/video/SDL_blit_A.c @ 737:7e4347dd2f9c
Small fix for iconification
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Fri, 14 Nov 2003 19:48:13 +0000 |
| parents | f90d80d68071 |
| children | 22dbf364c017 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include <stdio.h> | |
| 29 | |
| 30 #include "SDL_types.h" | |
| 31 #include "SDL_video.h" | |
| 32 #include "SDL_blit.h" | |
| 33 | |
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34 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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35 #include "mmx.h" |
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36 /* Function to check the CPU flags */ |
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37 #define MMX_CPU 0x800000 |
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38 #define TDNOW_CPU 0x80000000 |
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39 #define CPU_Flags() Hermes_X86_CPU() |
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40 #define X86_ASSEMBLER |
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41 #define HermesConverterInterface void |
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42 #define HermesClearInterface void |
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43 #define STACKCALL |
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44 #include "HeadX86.h" |
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45 #endif |
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46 |
| 0 | 47 /* Functions to perform alpha blended blitting */ |
| 48 | |
| 49 /* N->1 blending with per-surface alpha */ | |
| 50 static void BlitNto1SurfaceAlpha(SDL_BlitInfo *info) | |
| 51 { | |
| 52 int width = info->d_width; | |
| 53 int height = info->d_height; | |
| 54 Uint8 *src = info->s_pixels; | |
| 55 int srcskip = info->s_skip; | |
| 56 Uint8 *dst = info->d_pixels; | |
| 57 int dstskip = info->d_skip; | |
| 58 Uint8 *palmap = info->table; | |
| 59 SDL_PixelFormat *srcfmt = info->src; | |
| 60 SDL_PixelFormat *dstfmt = info->dst; | |
| 61 int srcbpp = srcfmt->BytesPerPixel; | |
| 62 | |
| 63 const unsigned A = srcfmt->alpha; | |
| 64 | |
| 65 while ( height-- ) { | |
| 66 DUFFS_LOOP4( | |
| 67 { | |
| 68 Uint32 pixel; | |
| 69 unsigned sR; | |
| 70 unsigned sG; | |
| 71 unsigned sB; | |
| 72 unsigned dR; | |
| 73 unsigned dG; | |
| 74 unsigned dB; | |
| 75 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB); | |
| 76 dR = dstfmt->palette->colors[*dst].r; | |
| 77 dG = dstfmt->palette->colors[*dst].g; | |
| 78 dB = dstfmt->palette->colors[*dst].b; | |
| 79 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); | |
| 80 dR &= 0xff; | |
| 81 dG &= 0xff; | |
| 82 dB &= 0xff; | |
| 83 /* Pack RGB into 8bit pixel */ | |
| 84 if ( palmap == NULL ) { | |
| 85 *dst =((dR>>5)<<(3+2))| | |
| 86 ((dG>>5)<<(2))| | |
| 87 ((dB>>6)<<(0)); | |
| 88 } else { | |
| 89 *dst = palmap[((dR>>5)<<(3+2))| | |
| 90 ((dG>>5)<<(2)) | | |
| 91 ((dB>>6)<<(0))]; | |
| 92 } | |
| 93 dst++; | |
| 94 src += srcbpp; | |
| 95 }, | |
| 96 width); | |
| 97 src += srcskip; | |
| 98 dst += dstskip; | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 /* N->1 blending with pixel alpha */ | |
| 103 static void BlitNto1PixelAlpha(SDL_BlitInfo *info) | |
| 104 { | |
| 105 int width = info->d_width; | |
| 106 int height = info->d_height; | |
| 107 Uint8 *src = info->s_pixels; | |
| 108 int srcskip = info->s_skip; | |
| 109 Uint8 *dst = info->d_pixels; | |
| 110 int dstskip = info->d_skip; | |
| 111 Uint8 *palmap = info->table; | |
| 112 SDL_PixelFormat *srcfmt = info->src; | |
| 113 SDL_PixelFormat *dstfmt = info->dst; | |
| 114 int srcbpp = srcfmt->BytesPerPixel; | |
| 115 | |
| 116 /* FIXME: fix alpha bit field expansion here too? */ | |
| 117 while ( height-- ) { | |
| 118 DUFFS_LOOP4( | |
| 119 { | |
| 120 Uint32 pixel; | |
| 121 unsigned sR; | |
| 122 unsigned sG; | |
| 123 unsigned sB; | |
| 124 unsigned sA; | |
| 125 unsigned dR; | |
| 126 unsigned dG; | |
| 127 unsigned dB; | |
| 128 DISEMBLE_RGBA(src,srcbpp,srcfmt,pixel,sR,sG,sB,sA); | |
| 129 dR = dstfmt->palette->colors[*dst].r; | |
| 130 dG = dstfmt->palette->colors[*dst].g; | |
| 131 dB = dstfmt->palette->colors[*dst].b; | |
| 132 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); | |
| 133 dR &= 0xff; | |
| 134 dG &= 0xff; | |
| 135 dB &= 0xff; | |
| 136 /* Pack RGB into 8bit pixel */ | |
| 137 if ( palmap == NULL ) { | |
| 138 *dst =((dR>>5)<<(3+2))| | |
| 139 ((dG>>5)<<(2))| | |
| 140 ((dB>>6)<<(0)); | |
| 141 } else { | |
| 142 *dst = palmap[((dR>>5)<<(3+2))| | |
| 143 ((dG>>5)<<(2)) | | |
| 144 ((dB>>6)<<(0)) ]; | |
| 145 } | |
| 146 dst++; | |
| 147 src += srcbpp; | |
| 148 }, | |
| 149 width); | |
| 150 src += srcskip; | |
| 151 dst += dstskip; | |
| 152 } | |
| 153 } | |
| 154 | |
| 155 /* colorkeyed N->1 blending with per-surface alpha */ | |
| 156 static void BlitNto1SurfaceAlphaKey(SDL_BlitInfo *info) | |
| 157 { | |
| 158 int width = info->d_width; | |
| 159 int height = info->d_height; | |
| 160 Uint8 *src = info->s_pixels; | |
| 161 int srcskip = info->s_skip; | |
| 162 Uint8 *dst = info->d_pixels; | |
| 163 int dstskip = info->d_skip; | |
| 164 Uint8 *palmap = info->table; | |
| 165 SDL_PixelFormat *srcfmt = info->src; | |
| 166 SDL_PixelFormat *dstfmt = info->dst; | |
| 167 int srcbpp = srcfmt->BytesPerPixel; | |
| 168 Uint32 ckey = srcfmt->colorkey; | |
| 169 | |
| 170 const int A = srcfmt->alpha; | |
| 171 | |
| 172 while ( height-- ) { | |
| 173 DUFFS_LOOP( | |
| 174 { | |
| 175 Uint32 pixel; | |
| 176 unsigned sR; | |
| 177 unsigned sG; | |
| 178 unsigned sB; | |
| 179 unsigned dR; | |
| 180 unsigned dG; | |
| 181 unsigned dB; | |
| 182 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB); | |
| 183 if ( pixel != ckey ) { | |
| 184 dR = dstfmt->palette->colors[*dst].r; | |
| 185 dG = dstfmt->palette->colors[*dst].g; | |
| 186 dB = dstfmt->palette->colors[*dst].b; | |
| 187 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); | |
| 188 dR &= 0xff; | |
| 189 dG &= 0xff; | |
| 190 dB &= 0xff; | |
| 191 /* Pack RGB into 8bit pixel */ | |
| 192 if ( palmap == NULL ) { | |
| 193 *dst =((dR>>5)<<(3+2))| | |
| 194 ((dG>>5)<<(2)) | | |
| 195 ((dB>>6)<<(0)); | |
| 196 } else { | |
| 197 *dst = palmap[((dR>>5)<<(3+2))| | |
| 198 ((dG>>5)<<(2)) | | |
| 199 ((dB>>6)<<(0)) ]; | |
| 200 } | |
| 201 } | |
| 202 dst++; | |
| 203 src += srcbpp; | |
| 204 }, | |
| 205 width); | |
| 206 src += srcskip; | |
| 207 dst += dstskip; | |
| 208 } | |
| 209 } | |
| 210 | |
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211 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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212 /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
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213 static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info) |
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214 { |
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215 int width = info->d_width; |
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216 int height = info->d_height; |
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217 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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218 int srcskip = info->s_skip >> 2; |
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219 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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220 int dstskip = info->d_skip >> 2; |
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221 Uint8 load[8]; |
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222 |
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223 *(Uint64 *)load = 0x00fefefe00fefefeULL;/* alpha128 mask */ |
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224 movq_m2r(*load, mm4); /* alpha128 mask -> mm4 */ |
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225 *(Uint64 *)load = 0x0001010100010101ULL;/* !alpha128 mask */ |
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226 movq_m2r(*load, mm3); /* !alpha128 mask -> mm3 */ |
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227 *(Uint64 *)load = 0xFF000000FF000000ULL;/* dst alpha mask */ |
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228 movq_m2r(*load, mm7); /* dst alpha mask -> mm7 */ |
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229 while(height--) { |
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230 DUFFS_LOOP_DOUBLE2( |
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231 { |
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232 Uint32 s = *srcp++; |
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233 Uint32 d = *dstp; |
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234 *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
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235 + (s & d & 0x00010101)) | 0xff000000; |
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236 },{ |
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237 movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
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238 movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
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239 |
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240 movq_m2r((*srcp), mm1);/* 2 x src -> mm1(ARGBARGB) */ |
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241 movq_r2r(mm1, mm5); /* 2 x src -> mm5(ARGBARGB) */ |
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242 |
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243 pand_r2r(mm4, mm6); /* dst & mask -> mm6 */ |
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244 pand_r2r(mm4, mm5); /* src & mask -> mm5 */ |
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245 paddd_r2r(mm6, mm5); /* mm6 + mm5 -> mm5 */ |
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246 psrld_i2r(1, mm5); /* mm5 >> 1 -> mm5 */ |
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247 |
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248 pand_r2r(mm1, mm2); /* src & dst -> mm2 */ |
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249 pand_r2r(mm3, mm2); /* mm2 & !mask -> mm2 */ |
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250 paddd_r2r(mm5, mm2); /* mm5 + mm2 -> mm2 */ |
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251 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
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252 movq_r2m(mm2, (*dstp));/* mm2 -> 2 x dst pixels */ |
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253 dstp += 2; |
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254 srcp += 2; |
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255 }, width); |
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256 srcp += srcskip; |
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257 dstp += dstskip; |
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258 } |
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259 emms(); |
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260 } |
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261 |
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262 /* fast RGB888->(A)RGB888 blending with surface alpha */ |
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263 static void BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info) |
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264 { |
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265 unsigned alpha = info->src->alpha; |
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266 if(alpha == 128) { |
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267 BlitRGBtoRGBSurfaceAlpha128MMX(info); |
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268 } else { |
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269 int width = info->d_width; |
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270 int height = info->d_height; |
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271 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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272 int srcskip = info->s_skip >> 2; |
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273 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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274 int dstskip = info->d_skip >> 2; |
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275 Uint8 load[8] = {alpha, alpha, alpha, alpha, |
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276 alpha, alpha, alpha, alpha}; |
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277 |
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278 movq_m2r(*load, mm4); /* alpha -> mm4 */ |
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279 *(Uint64 *)load = 0x00FF00FF00FF00FFULL; |
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280 movq_m2r(*load, mm3); /* mask -> mm3 */ |
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281 pand_r2r(mm3, mm4); /* mm4 & mask -> 0A0A0A0A -> mm4 */ |
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282 *(Uint64 *)load = 0xFF000000FF000000ULL;/* dst alpha mask */ |
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283 movq_m2r(*load, mm7); /* dst alpha mask -> mm7 */ |
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284 |
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285 while(height--) { |
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286 DUFFS_LOOP_DOUBLE2({ |
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287 /* One Pixel Blend */ |
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288 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
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289 punpcklbw_r2r(mm1, mm1); /* AARRGGBB -> mm1 */ |
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290 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1 */ |
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291 |
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292 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
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293 movq_r2r(mm2, mm6);/* dst(ARGB) -> mm6 (0000ARGB)*/ |
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294 punpcklbw_r2r(mm2, mm2); /* AARRGGBB -> mm2 */ |
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295 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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296 |
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297 psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
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298 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
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299 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
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300 paddw_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
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301 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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302 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */ |
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303 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
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304 movd_r2m(mm2, *dstp);/* mm2 -> pixel */ |
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305 ++srcp; |
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306 ++dstp; |
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307 },{ |
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308 /* Two Pixels Blend */ |
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309 movq_m2r((*srcp), mm0);/* 2 x src -> mm0(ARGBARGB)*/ |
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310 movq_r2r(mm0, mm1); /* 2 x src -> mm1(ARGBARGB) */ |
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311 punpcklbw_r2r(mm0, mm0); /* low - AARRGGBB -> mm0 */ |
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312 pand_r2r(mm3, mm0); /* 0A0R0G0B -> mm0(src1) */ |
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313 punpckhbw_r2r(mm1, mm1); /* high - AARRGGBB -> mm1 */ |
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314 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1(src2) */ |
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315 |
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316 movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
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317 movq_r2r(mm2, mm5); /* 2 x dst -> mm5(ARGBARGB) */ |
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318 movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
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319 punpcklbw_r2r(mm2, mm2); /* low - AARRGGBB -> mm2 */ |
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320 punpckhbw_r2r(mm6, mm6); /* high - AARRGGBB -> mm6 */ |
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321 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2(dst1) */ |
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322 |
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323 psubw_r2r(mm2, mm0);/* src1 - dst1 -> mm0 */ |
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324 pmullw_r2r(mm4, mm0); /* mm0 * alpha -> mm0 */ |
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325 pand_r2r(mm3, mm6); /* 0A0R0G0B -> mm6(dst2) */ |
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326 psrlw_i2r(8, mm0); /* mm0 >> 8 -> mm1 */ |
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327 psubw_r2r(mm6, mm1);/* src2 - dst2 -> mm1 */ |
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328 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
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329 paddw_r2r(mm0, mm2); /* mm0 + mm2(dst1) -> mm2 */ |
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330 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm0 */ |
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331 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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332 paddw_r2r(mm1, mm6); /* mm1 + mm6(dst2) -> mm6 */ |
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333 pand_r2r(mm3, mm6); /* 0A0R0G0B -> mm6 */ |
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334 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */ |
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335 packuswb_r2r(mm6, mm6); /* ARGBARGB -> mm6 */ |
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336 psrlq_i2r(32, mm2); /* mm2 >> 32 -> mm2 */ |
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337 psllq_i2r(32, mm6); /* mm6 << 32 -> mm6 */ |
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338 por_r2r(mm6, mm2); /* mm6 | mm2 -> mm2 */ |
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339 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
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340 movq_r2m(mm2, *dstp);/* mm2 -> 2 x pixel */ |
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341 srcp += 2; |
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342 dstp += 2; |
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343 }, width); |
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344 srcp += srcskip; |
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345 dstp += dstskip; |
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346 } |
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347 emms(); |
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348 } |
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349 } |
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350 |
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351 /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
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352 static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info) |
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353 { |
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354 int width = info->d_width; |
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355 int height = info->d_height; |
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356 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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357 int srcskip = info->s_skip >> 2; |
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358 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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359 int dstskip = info->d_skip >> 2; |
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360 Uint32 alpha = 0; |
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361 Uint8 load[8]; |
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362 |
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363 *(Uint64 *)load = 0x00FF00FF00FF00FFULL; |
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364 movq_m2r(*load, mm3); /* mask -> mm2 */ |
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365 *(Uint64 *)load = 0x00FF000000000000ULL; |
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366 movq_m2r(*load, mm7); /* dst alpha mask -> mm2 */ |
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367 *(Uint64 *)load = 0x00FFFFFF00FFFFFFULL; |
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368 movq_m2r(*load, mm0); /* alpha 255 mask -> mm0 */ |
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369 *(Uint64 *)load = 0xFF000000FF000000ULL; |
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370 movq_m2r(*load, mm6); /* alpha 255 !mask -> mm6 */ |
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371 while(height--) { |
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372 DUFFS_LOOP4({ |
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373 alpha = *srcp; |
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374 alpha >>= 24; |
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375 /* FIXME: Here we special-case opaque alpha since the |
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376 compositioning used (>>8 instead of /255) doesn't handle |
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377 it correctly. Also special-case alpha=0 for speed? |
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378 Benchmark this! */ |
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379 if(alpha) { |
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380 if(alpha == SDL_ALPHA_OPAQUE) { |
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381 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
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382 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
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383 pand_r2r(mm0, mm1); |
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384 pand_r2r(mm6, mm2); |
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385 por_r2r(mm1, mm2); |
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386 movd_r2m(mm2, (*dstp)); |
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387 } else { |
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388 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
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389 punpcklbw_r2r(mm1, mm1); /* AARRGGBB -> mm1 */ |
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390 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1 */ |
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391 |
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392 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
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393 punpcklbw_r2r(mm2, mm2); /* AARRGGBB -> mm2 */ |
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394 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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395 |
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396 movq_r2r(mm2, mm5);/* mm2(0A0R0G0B) -> mm5 */ |
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397 pand_r2r(mm7, mm5); /* mm5 & dst alpha mask -> mm5(0A000000) */ |
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398 psrlq_i2r(24, mm5); /* mm5 >> 24 -> mm5 (0000A000)*/ |
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399 |
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400 movq_r2r(mm1, mm4);/* mm1(0A0R0G0B) -> mm4 */ |
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401 psrlq_i2r(48, mm4); /* mm4 >> 48 -> mm4(0000000A) */ |
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402 punpcklwd_r2r(mm4, mm4); /* 00000A0A -> mm4 */ |
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403 punpcklwd_r2r(mm4, mm4); /* 0A0A0A0A -> mm4 */ |
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404 |
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405 /* blend */ |
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406 psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
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407 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
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408 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
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409 paddw_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
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410 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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411 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */ |
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412 pand_r2r(mm0, mm2); /* 0RGB0RGB -> mm2 */ |
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413 por_r2r(mm5, mm2); /* dst alpha | mm2 -> mm2 */ |
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414 movd_r2m(mm2, *dstp);/* mm2 -> dst */ |
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415 } |
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416 } |
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417 ++srcp; |
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418 ++dstp; |
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419 }, width); |
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420 srcp += srcskip; |
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421 dstp += dstskip; |
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422 } |
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423 emms(); |
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424 } |
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425 #endif |
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426 |
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427 /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
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428 static void BlitRGBtoRGBSurfaceAlpha128(SDL_BlitInfo *info) |
| 0 | 429 { |
| 430 int width = info->d_width; | |
| 431 int height = info->d_height; | |
| 432 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
| 433 int srcskip = info->s_skip >> 2; | |
| 434 Uint32 *dstp = (Uint32 *)info->d_pixels; | |
| 435 int dstskip = info->d_skip >> 2; | |
| 436 | |
| 437 while(height--) { | |
| 438 DUFFS_LOOP4({ | |
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439 Uint32 s = *srcp++; |
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440 Uint32 d = *dstp; |
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441 *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
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442 + (s & d & 0x00010101)) | 0xff000000; |
| 0 | 443 }, width); |
| 444 srcp += srcskip; | |
| 445 dstp += dstskip; | |
| 446 } | |
| 447 } | |
| 448 | |
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449 /* fast RGB888->(A)RGB888 blending with surface alpha */ |
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450 static void BlitRGBtoRGBSurfaceAlpha(SDL_BlitInfo *info) |
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451 { |
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452 unsigned alpha = info->src->alpha; |
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453 if(alpha == 128) { |
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454 BlitRGBtoRGBSurfaceAlpha128(info); |
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455 } else { |
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456 int width = info->d_width; |
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457 int height = info->d_height; |
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458 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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459 int srcskip = info->s_skip >> 2; |
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460 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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461 int dstskip = info->d_skip >> 2; |
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462 Uint32 s; |
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463 Uint32 d; |
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464 Uint32 s1; |
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465 Uint32 d1; |
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466 |
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467 while(height--) { |
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468 DUFFS_LOOP_DOUBLE2({ |
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469 /* One Pixel Blend */ |
|
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470 s = *srcp; |
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471 d = *dstp; |
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472 s1 = s & 0xff00ff; |
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473 d1 = d & 0xff00ff; |
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474 d1 = (d1 + ((s1 - d1) * alpha >> 8)) |
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475 & 0xff00ff; |
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476 s &= 0xff00; |
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477 d &= 0xff00; |
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478 d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
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479 *dstp = d1 | d | 0xff000000; |
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480 ++srcp; |
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481 ++dstp; |
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482 },{ |
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483 /* Two Pixels Blend */ |
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484 s = *srcp; |
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485 d = *dstp; |
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486 s1 = s & 0xff00ff; |
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487 d1 = d & 0xff00ff; |
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488 d1 += (s1 - d1) * alpha >> 8; |
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489 d1 &= 0xff00ff; |
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490 |
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491 s = ((s & 0xff00) >> 8) | |
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492 ((srcp[1] & 0xff00) << 8); |
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493 d = ((d & 0xff00) >> 8) | |
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494 ((dstp[1] & 0xff00) << 8); |
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495 d += (s - d) * alpha >> 8; |
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496 d &= 0x00ff00ff; |
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497 |
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498 *dstp++ = d1 | ((d << 8) & 0xff00) | 0xff000000; |
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499 ++srcp; |
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500 |
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501 s1 = *srcp; |
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502 d1 = *dstp; |
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503 s1 &= 0xff00ff; |
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504 d1 &= 0xff00ff; |
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505 d1 += (s1 - d1) * alpha >> 8; |
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506 d1 &= 0xff00ff; |
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507 |
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508 *dstp = d1 | ((d >> 8) & 0xff00) | 0xff000000; |
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509 ++srcp; |
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510 ++dstp; |
|
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511 }, width); |
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512 srcp += srcskip; |
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513 dstp += dstskip; |
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514 } |
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515 } |
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516 } |
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517 |
| 0 | 518 /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
| 519 static void BlitRGBtoRGBPixelAlpha(SDL_BlitInfo *info) | |
| 520 { | |
| 521 int width = info->d_width; | |
| 522 int height = info->d_height; | |
| 523 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
| 524 int srcskip = info->s_skip >> 2; | |
| 525 Uint32 *dstp = (Uint32 *)info->d_pixels; | |
| 526 int dstskip = info->d_skip >> 2; | |
| 527 | |
| 528 while(height--) { | |
| 529 DUFFS_LOOP4({ | |
| 530 Uint32 dalpha; | |
| 531 Uint32 d; | |
| 532 Uint32 s1; | |
| 533 Uint32 d1; | |
| 534 Uint32 s = *srcp; | |
| 535 Uint32 alpha = s >> 24; | |
| 536 /* FIXME: Here we special-case opaque alpha since the | |
| 537 compositioning used (>>8 instead of /255) doesn't handle | |
| 538 it correctly. Also special-case alpha=0 for speed? | |
| 539 Benchmark this! */ | |
|
689
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540 if(alpha) { |
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541 if(alpha == SDL_ALPHA_OPAQUE) { |
| 0 | 542 *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); |
|
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543 } else { |
| 0 | 544 /* |
| 545 * take out the middle component (green), and process | |
| 546 * the other two in parallel. One multiply less. | |
| 547 */ | |
| 548 d = *dstp; | |
| 549 dalpha = d & 0xff000000; | |
| 550 s1 = s & 0xff00ff; | |
| 551 d1 = d & 0xff00ff; | |
| 552 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; | |
| 553 s &= 0xff00; | |
| 554 d &= 0xff00; | |
| 555 d = (d + ((s - d) * alpha >> 8)) & 0xff00; | |
| 556 *dstp = d1 | d | dalpha; | |
|
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557 } |
| 0 | 558 } |
| 559 ++srcp; | |
| 560 ++dstp; | |
| 561 }, width); | |
| 562 srcp += srcskip; | |
| 563 dstp += dstskip; | |
| 564 } | |
| 565 } | |
| 566 | |
|
689
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567 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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568 /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */ |
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569 inline static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info) |
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570 { |
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571 int width = info->d_width; |
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572 int height = info->d_height; |
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573 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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574 int srcskip = info->s_skip >> 2; |
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575 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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576 int dstskip = info->d_skip >> 2; |
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577 |
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578 Uint32 s; |
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579 Uint32 alpha; |
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580 |
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581 __asm__ ( |
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582 /* make mm6 all zeros. */ |
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583 "pxor %%mm6, %%mm6\n" |
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584 |
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585 /* Make a mask to preserve the alpha. */ |
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586 "pcmpeqb %%mm7, %%mm7\n\t" /* mm7(s) = FF FF FF FF | FF FF FF FF */ |
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587 "psrlq $16, %%mm7\n\t" /* mm7(s) = 00 00 FF FF | FF FF FF FF */ |
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588 |
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589 : ); |
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590 |
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591 while(height--) { |
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592 |
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593 DUFFS_LOOP4({ |
|
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594 |
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595 __asm__ ( |
|
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596 "prefetch 64(%0)\n" |
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597 "prefetch 64(%1)\n" |
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598 : : "r" (srcp), "r" (dstp) ); |
|
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599 |
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600 s = *srcp; |
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601 alpha = s >> 24; |
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602 /* FIXME: Here we special-case opaque alpha since the |
|
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603 compositioning used (>>8 instead of /255) doesn't handle |
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604 it correctly. Also special-case alpha=0 for speed? |
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605 Benchmark this! */ |
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606 |
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607 if(alpha == SDL_ALPHA_OPAQUE) { |
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608 *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); |
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609 } |
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610 |
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611 else { |
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612 __asm__ ( |
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613 /* load in the source, and dst. */ |
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614 "movd (%0), %%mm0\n" /* mm0(s) = 0 0 0 0 | As Rs Gs Bs */ |
|
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615 "movd (%1), %%mm1\n" /* mm1(d) = 0 0 0 0 | Ad Rd Gd Bd */ |
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616 |
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617 /* Move the src alpha into mm2 */ |
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618 |
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619 /* if supporting pshufw */ |
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620 /*"pshufw $0x55, %%mm0, %%mm2\n" */ /* mm2 = 0 As 0 As | 0 As 0 As */ |
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621 /*"psrlw $8, %%mm2\n" */ |
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622 |
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623 /* else: */ |
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624 "movq %%mm0, %%mm2\n" |
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625 "psrld $24, %%mm2\n" /* mm2 = 0 0 0 0 | 0 0 0 As */ |
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626 "punpcklwd %%mm2, %%mm2\n" /* mm2 = 0 0 0 0 | 0 As 0 As */ |
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627 "punpckldq %%mm2, %%mm2\n" /* mm2 = 0 As 0 As | 0 As 0 As */ |
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628 |
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629 /* move the colors into words. */ |
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630 "punpcklbw %%mm6, %%mm0\n" /* mm0 = 0 As 0 Rs | 0 Gs 0 Bs */ |
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631 "punpcklbw %%mm6, %%mm1\n" /* mm0 = 0 Ad 0 Rd | 0 Gd 0 Bd */ |
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632 |
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633 /* src - dst */ |
|
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634 "psubw %%mm1, %%mm0\n" /* mm0 = As-Ad Rs-Rd | Gs-Gd Bs-Bd */ |
|
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635 |
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636 /* A * (src-dst) */ |
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637 "pmullw %%mm2, %%mm0\n" /* mm0 = As*As-d As*Rs-d | As*Gs-d As*Bs-d */ |
|
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638 "pand %%mm7, %%mm0\n" /* to preserve dest alpha */ |
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639 "psrlw $8, %%mm0\n" /* mm0 = Ac>>8 Rc>>8 | Gc>>8 Bc>>8 */ |
|
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640 "paddb %%mm1, %%mm0\n" /* mm0 = Ac+Ad Rc+Rd | Gc+Gd Bc+Bd */ |
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641 |
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642 "packuswb %%mm0, %%mm0\n" /* mm0 = | Ac Rc Gc Bc */ |
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643 |
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644 "movd %%mm0, (%1)\n" /* result in mm0 */ |
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645 |
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646 : : "r" (srcp), "r" (dstp) ); |
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647 |
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648 } |
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649 ++srcp; |
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650 ++dstp; |
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651 }, width); |
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652 srcp += srcskip; |
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653 dstp += dstskip; |
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654 } |
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655 |
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656 __asm__ ( |
|
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657 "emms\n" |
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658 : ); |
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659 } |
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660 #endif |
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661 |
|
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662 /* 16bpp special case for per-surface alpha=50%: blend 2 pixels in parallel */ |
|
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663 |
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664 /* blend a single 16 bit pixel at 50% */ |
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665 #define BLEND16_50(d, s, mask) \ |
|
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666 ((((s & mask) + (d & mask)) >> 1) + (s & d & (~mask & 0xffff))) |
|
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667 |
|
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|
668 /* blend two 16 bit pixels at 50% */ |
|
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669 #define BLEND2x16_50(d, s, mask) \ |
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670 (((s & (mask | mask << 16)) >> 1) + ((d & (mask | mask << 16)) >> 1) \ |
|
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671 + (s & d & (~(mask | mask << 16)))) |
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|
672 |
|
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673 static void Blit16to16SurfaceAlpha128(SDL_BlitInfo *info, Uint16 mask) |
| 0 | 674 { |
| 675 int width = info->d_width; | |
| 676 int height = info->d_height; | |
| 677 Uint16 *srcp = (Uint16 *)info->s_pixels; | |
| 678 int srcskip = info->s_skip >> 1; | |
| 679 Uint16 *dstp = (Uint16 *)info->d_pixels; | |
| 680 int dstskip = info->d_skip >> 1; | |
| 681 | |
| 682 while(height--) { | |
|
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683 if(((unsigned long)srcp ^ (unsigned long)dstp) & 2) { |
|
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684 /* |
|
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685 * Source and destination not aligned, pipeline it. |
|
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686 * This is mostly a win for big blits but no loss for |
|
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|
687 * small ones |
|
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688 */ |
|
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689 Uint32 prev_sw; |
|
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690 int w = width; |
|
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|
691 |
|
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|
692 /* handle odd destination */ |
|
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|
693 if((unsigned long)dstp & 2) { |
|
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694 Uint16 d = *dstp, s = *srcp; |
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695 *dstp = BLEND16_50(d, s, mask); |
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696 dstp++; |
|
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697 srcp++; |
|
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698 w--; |
|
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|
699 } |
|
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700 srcp++; /* srcp is now 32-bit aligned */ |
|
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|
701 |
|
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|
702 /* bootstrap pipeline with first halfword */ |
|
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703 prev_sw = ((Uint32 *)srcp)[-1]; |
|
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|
704 |
|
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|
705 while(w > 1) { |
|
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|
706 Uint32 sw, dw, s; |
|
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|
707 sw = *(Uint32 *)srcp; |
|
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|
708 dw = *(Uint32 *)dstp; |
|
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|
709 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) |
|
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|
710 s = (prev_sw << 16) + (sw >> 16); |
|
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|
711 else |
|
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|
712 s = (prev_sw >> 16) + (sw << 16); |
|
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|
713 prev_sw = sw; |
|
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|
714 *(Uint32 *)dstp = BLEND2x16_50(dw, s, mask); |
|
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|
715 dstp += 2; |
|
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|
716 srcp += 2; |
|
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|
717 w -= 2; |
|
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|
718 } |
|
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|
719 |
|
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|
720 /* final pixel if any */ |
|
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|
721 if(w) { |
|
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|
722 Uint16 d = *dstp, s; |
|
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|
723 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) |
|
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|
724 s = prev_sw; |
|
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|
725 else |
|
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|
726 s = prev_sw >> 16; |
|
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|
727 *dstp = BLEND16_50(d, s, mask); |
|
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|
728 srcp++; |
|
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|
729 dstp++; |
|
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|
730 } |
|
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|
731 srcp += srcskip - 1; |
|
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|
732 dstp += dstskip; |
|
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|
733 } else { |
|
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|
734 /* source and destination are aligned */ |
|
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|
735 int w = width; |
|
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|
736 |
|
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|
737 /* first odd pixel? */ |
|
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|
738 if((unsigned long)srcp & 2) { |
|
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|
739 Uint16 d = *dstp, s = *srcp; |
|
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|
740 *dstp = BLEND16_50(d, s, mask); |
|
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|
741 srcp++; |
|
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|
742 dstp++; |
|
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|
743 w--; |
|
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|
744 } |
|
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|
745 /* srcp and dstp are now 32-bit aligned */ |
|
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|
746 |
|
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|
747 while(w > 1) { |
|
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|
748 Uint32 sw = *(Uint32 *)srcp; |
|
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|
749 Uint32 dw = *(Uint32 *)dstp; |
|
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|
750 *(Uint32 *)dstp = BLEND2x16_50(dw, sw, mask); |
|
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|
751 srcp += 2; |
|
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changeset
|
752 dstp += 2; |
|
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|
753 w -= 2; |
|
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changeset
|
754 } |
|
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|
755 |
|
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changeset
|
756 /* last odd pixel? */ |
|
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diff
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|
757 if(w) { |
|
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|
758 Uint16 d = *dstp, s = *srcp; |
|
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changeset
|
759 *dstp = BLEND16_50(d, s, mask); |
|
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|
760 srcp++; |
|
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|
761 dstp++; |
|
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|
762 } |
|
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diff
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|
763 srcp += srcskip; |
|
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diff
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|
764 dstp += dstskip; |
|
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|
765 } |
|
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|
766 } |
|
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|
767 } |
|
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|
768 |
|
689
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|
769 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
|
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|
770 /* fast RGB565->RGB565 blending with surface alpha */ |
|
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771 static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info) |
|
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772 { |
|
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773 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
|
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774 if(alpha == 128) { |
|
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775 Blit16to16SurfaceAlpha128(info, 0xf7de); |
|
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776 } else { |
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777 int width = info->d_width; |
|
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778 int height = info->d_height; |
|
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779 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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780 int srcskip = info->s_skip >> 1; |
|
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781 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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782 int dstskip = info->d_skip >> 1; |
|
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|
783 Uint32 s, d; |
|
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784 Uint8 load[8]; |
|
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|
785 |
|
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786 alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
|
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787 *(Uint64 *)load = alpha; |
|
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|
788 alpha >>= 3; /* downscale alpha to 5 bits */ |
|
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789 |
|
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790 movq_m2r(*load, mm0); /* alpha(0000000A) -> mm0 */ |
|
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791 punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
|
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792 punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
|
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793 |
|
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|
794 /* Setup the 565 color channel masks */ |
|
720
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|
795 *(Uint64 *)load = 0xF800F800F800F800ULL; |
|
689
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796 movq_m2r(*load, mm1); /* MASKRED -> mm1 */ |
|
720
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|
797 *(Uint64 *)load = 0x07E007E007E007E0ULL; |
|
689
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|
798 movq_m2r(*load, mm4); /* MASKGREEN -> mm4 */ |
|
720
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|
799 *(Uint64 *)load = 0x001F001F001F001FULL; |
|
689
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800 movq_m2r(*load, mm7); /* MASKBLUE -> mm7 */ |
|
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801 while(height--) { |
|
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802 DUFFS_LOOP_QUATRO2( |
|
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803 { |
|
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804 s = *srcp++; |
|
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805 d = *dstp; |
|
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|
806 /* |
|
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807 * shift out the middle component (green) to |
|
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808 * the high 16 bits, and process all three RGB |
|
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809 * components at the same time. |
|
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810 */ |
|
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811 s = (s | s << 16) & 0x07e0f81f; |
|
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812 d = (d | d << 16) & 0x07e0f81f; |
|
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813 d += (s - d) * alpha >> 5; |
|
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814 d &= 0x07e0f81f; |
|
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|
815 *dstp++ = d | d >> 16; |
|
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816 },{ |
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817 s = *srcp++; |
|
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818 d = *dstp; |
|
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|
819 /* |
|
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820 * shift out the middle component (green) to |
|
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821 * the high 16 bits, and process all three RGB |
|
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822 * components at the same time. |
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823 */ |
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824 s = (s | s << 16) & 0x07e0f81f; |
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825 d = (d | d << 16) & 0x07e0f81f; |
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826 d += (s - d) * alpha >> 5; |
|
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|
827 d &= 0x07e0f81f; |
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828 *dstp++ = d | d >> 16; |
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829 s = *srcp++; |
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830 d = *dstp; |
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831 /* |
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832 * shift out the middle component (green) to |
|
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|
833 * the high 16 bits, and process all three RGB |
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|
834 * components at the same time. |
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835 */ |
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|
836 s = (s | s << 16) & 0x07e0f81f; |
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837 d = (d | d << 16) & 0x07e0f81f; |
|
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838 d += (s - d) * alpha >> 5; |
|
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|
839 d &= 0x07e0f81f; |
|
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840 *dstp++ = d | d >> 16; |
|
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841 },{ |
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|
842 movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
|
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843 movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
|
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844 |
|
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|
845 /* RED */ |
|
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846 movq_r2r(mm2, mm5); /* src -> mm5 */ |
|
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|
847 pand_r2r(mm1 , mm5); /* src & MASKRED -> mm5 */ |
|
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|
848 psrlq_i2r(11, mm5); /* mm5 >> 11 -> mm5 [000r 000r 000r 000r] */ |
|
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849 |
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850 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
|
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851 pand_r2r(mm1 , mm6); /* dst & MASKRED -> mm6 */ |
|
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852 psrlq_i2r(11, mm6); /* mm6 >> 11 -> mm6 [000r 000r 000r 000r] */ |
|
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853 |
|
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|
854 /* blend */ |
|
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|
855 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
|
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|
856 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
|
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|
857 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
|
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|
858 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
|
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859 psllq_i2r(11, mm6); /* mm6 << 11 -> mm6 */ |
|
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860 pand_r2r(mm1, mm6); /* mm6 & MASKRED -> mm6 */ |
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861 |
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862 movq_r2r(mm4, mm5); /* MASKGREEN -> mm5 */ |
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863 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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864 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKRED) -> mm3 */ |
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865 por_r2r(mm6, mm3); /* save new reds in dsts */ |
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866 |
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867 /* green */ |
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868 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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869 pand_r2r(mm4 , mm5); /* src & MASKGREEN -> mm5 */ |
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870 psrlq_i2r(5, mm5); /* mm5 >> 5 -> mm5 [000g 000g 000g 000g] */ |
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871 |
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872 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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873 pand_r2r(mm4 , mm6); /* dst & MASKGREEN -> mm6 */ |
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874 psrlq_i2r(5, mm6); /* mm6 >> 5 -> mm6 [000g 000g 000g 000g] */ |
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875 |
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876 /* blend */ |
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877 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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878 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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879 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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880 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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881 psllq_i2r(5, mm6); /* mm6 << 5 -> mm6 */ |
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882 pand_r2r(mm4, mm6); /* mm6 & MASKGREEN -> mm6 */ |
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883 |
|
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884 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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885 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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886 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKGREEN) -> mm3 */ |
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887 por_r2r(mm6, mm3); /* save new greens in dsts */ |
|
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888 |
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889 /* blue */ |
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890 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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891 pand_r2r(mm7 , mm5); /* src & MASKRED -> mm5[000b 000b 000b 000b] */ |
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892 |
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893 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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894 pand_r2r(mm7 , mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
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895 |
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896 /* blend */ |
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897 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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898 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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899 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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900 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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901 pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6 */ |
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902 |
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903 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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904 por_r2r(mm4, mm5); /* MASKGREEN | mm5 -> mm5 */ |
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905 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKBLUE) -> mm3 */ |
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906 por_r2r(mm6, mm3); /* save new blues in dsts */ |
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907 |
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908 movq_r2m(mm3, *dstp);/* mm3 -> 4 dst pixels */ |
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909 |
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910 srcp += 4; |
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911 dstp += 4; |
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912 }, width); |
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913 srcp += srcskip; |
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914 dstp += dstskip; |
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915 } |
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916 emms(); |
|
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917 } |
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918 } |
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919 |
|
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920 /* fast RGB555->RGB555 blending with surface alpha */ |
|
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921 static void Blit555to555SurfaceAlphaMMX(SDL_BlitInfo *info) |
|
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922 { |
|
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923 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
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924 if(alpha == 128) { |
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925 Blit16to16SurfaceAlpha128(info, 0xfbde); |
|
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926 } else { |
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927 int width = info->d_width; |
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928 int height = info->d_height; |
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929 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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930 int srcskip = info->s_skip >> 1; |
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931 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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932 int dstskip = info->d_skip >> 1; |
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933 Uint32 s, d; |
|
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934 Uint8 load[8]; |
|
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935 |
|
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936 alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
|
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937 *(Uint64 *)load = alpha; |
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938 alpha >>= 3; /* downscale alpha to 5 bits */ |
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939 |
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940 movq_m2r(*load, mm0); /* alpha(0000000A) -> mm0 */ |
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941 punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
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942 punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
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943 |
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944 /* Setup the 555 color channel masks */ |
|
720
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945 *(Uint64 *)load = 0x7C007C007C007C00ULL; |
|
689
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946 movq_m2r(*load, mm1); /* MASKRED -> mm1 */ |
|
720
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947 *(Uint64 *)load = 0x03E003E003E003E0ULL; |
|
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948 movq_m2r(*load, mm4); /* MASKGREEN -> mm4 */ |
|
720
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949 *(Uint64 *)load = 0x001F001F001F001FULL; |
|
689
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950 movq_m2r(*load, mm7); /* MASKBLUE -> mm7 */ |
|
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951 while(height--) { |
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952 DUFFS_LOOP_QUATRO2( |
|
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953 { |
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954 s = *srcp++; |
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955 d = *dstp; |
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956 /* |
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957 * shift out the middle component (green) to |
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958 * the high 16 bits, and process all three RGB |
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959 * components at the same time. |
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960 */ |
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961 s = (s | s << 16) & 0x03e07c1f; |
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962 d = (d | d << 16) & 0x03e07c1f; |
|
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963 d += (s - d) * alpha >> 5; |
|
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964 d &= 0x03e07c1f; |
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965 *dstp++ = d | d >> 16; |
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966 },{ |
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967 s = *srcp++; |
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968 d = *dstp; |
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969 /* |
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970 * shift out the middle component (green) to |
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971 * the high 16 bits, and process all three RGB |
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972 * components at the same time. |
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973 */ |
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974 s = (s | s << 16) & 0x03e07c1f; |
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975 d = (d | d << 16) & 0x03e07c1f; |
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976 d += (s - d) * alpha >> 5; |
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977 d &= 0x03e07c1f; |
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978 *dstp++ = d | d >> 16; |
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979 s = *srcp++; |
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980 d = *dstp; |
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981 /* |
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982 * shift out the middle component (green) to |
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983 * the high 16 bits, and process all three RGB |
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984 * components at the same time. |
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985 */ |
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986 s = (s | s << 16) & 0x03e07c1f; |
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987 d = (d | d << 16) & 0x03e07c1f; |
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988 d += (s - d) * alpha >> 5; |
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989 d &= 0x03e07c1f; |
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990 *dstp++ = d | d >> 16; |
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991 },{ |
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992 movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
|
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993 movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
|
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994 |
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995 /* RED */ |
|
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996 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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997 pand_r2r(mm1 , mm5); /* src & MASKRED -> mm5 */ |
|
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998 psrlq_i2r(10, mm5); /* mm5 >> 10 -> mm5 [000r 000r 000r 000r] */ |
|
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999 |
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1000 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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1001 pand_r2r(mm1 , mm6); /* dst & MASKRED -> mm6 */ |
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1002 psrlq_i2r(10, mm6); /* mm6 >> 10 -> mm6 [000r 000r 000r 000r] */ |
|
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1003 |
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1004 /* blend */ |
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1005 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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1006 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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1007 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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1008 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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1009 psllq_i2r(10, mm6); /* mm6 << 10 -> mm6 */ |
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1010 pand_r2r(mm1, mm6); /* mm6 & MASKRED -> mm6 */ |
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1011 |
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1012 movq_r2r(mm4, mm5); /* MASKGREEN -> mm5 */ |
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1013 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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1014 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKRED) -> mm3 */ |
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1015 por_r2r(mm6, mm3); /* save new reds in dsts */ |
|
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1016 |
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1017 /* green */ |
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1018 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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1019 pand_r2r(mm4 , mm5); /* src & MASKGREEN -> mm5 */ |
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1020 psrlq_i2r(5, mm5); /* mm5 >> 5 -> mm5 [000g 000g 000g 000g] */ |
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1021 |
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1022 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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1023 pand_r2r(mm4 , mm6); /* dst & MASKGREEN -> mm6 */ |
|
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1024 psrlq_i2r(5, mm6); /* mm6 >> 5 -> mm6 [000g 000g 000g 000g] */ |
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1025 |
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1026 /* blend */ |
|
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1027 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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1028 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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1029 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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1030 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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1031 psllq_i2r(5, mm6); /* mm6 << 5 -> mm6 */ |
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1032 pand_r2r(mm4, mm6); /* mm6 & MASKGREEN -> mm6 */ |
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1033 |
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1034 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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1035 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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1036 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKGREEN) -> mm3 */ |
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1037 por_r2r(mm6, mm3); /* save new greens in dsts */ |
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1038 |
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1039 /* blue */ |
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1040 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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1041 pand_r2r(mm7 , mm5); /* src & MASKRED -> mm5[000b 000b 000b 000b] */ |
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1042 |
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1043 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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1044 pand_r2r(mm7 , mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
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1045 |
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1046 /* blend */ |
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1047 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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1048 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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1049 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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1050 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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1051 pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6 */ |
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1052 |
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1053 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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1054 por_r2r(mm4, mm5); /* MASKGREEN | mm5 -> mm5 */ |
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1055 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKBLUE) -> mm3 */ |
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1056 por_r2r(mm6, mm3); /* save new blues in dsts */ |
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1057 |
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1058 movq_r2m(mm3, *dstp);/* mm3 -> 4 dst pixels */ |
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1059 |
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1060 srcp += 4; |
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1061 dstp += 4; |
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1062 }, width); |
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1063 srcp += srcskip; |
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1064 dstp += dstskip; |
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1065 } |
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1066 emms(); |
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1067 } |
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1068 } |
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1069 #endif |
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1070 |
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1071 /* fast RGB565->RGB565 blending with surface alpha */ |
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1072 static void Blit565to565SurfaceAlpha(SDL_BlitInfo *info) |
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1073 { |
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1074 unsigned alpha = info->src->alpha; |
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1075 if(alpha == 128) { |
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1076 Blit16to16SurfaceAlpha128(info, 0xf7de); |
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1077 } else { |
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1078 int width = info->d_width; |
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1079 int height = info->d_height; |
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1080 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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1081 int srcskip = info->s_skip >> 1; |
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1082 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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1083 int dstskip = info->d_skip >> 1; |
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1084 alpha >>= 3; /* downscale alpha to 5 bits */ |
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1085 |
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1086 while(height--) { |
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1087 DUFFS_LOOP4({ |
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1088 Uint32 s = *srcp++; |
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1089 Uint32 d = *dstp; |
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1090 /* |
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1091 * shift out the middle component (green) to |
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1092 * the high 16 bits, and process all three RGB |
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1093 * components at the same time. |
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1094 */ |
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1095 s = (s | s << 16) & 0x07e0f81f; |
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1096 d = (d | d << 16) & 0x07e0f81f; |
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1097 d += (s - d) * alpha >> 5; |
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1098 d &= 0x07e0f81f; |
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1099 *dstp++ = d | d >> 16; |
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1100 }, width); |
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1101 srcp += srcskip; |
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1102 dstp += dstskip; |
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1103 } |
| 0 | 1104 } |
| 1105 } | |
| 1106 | |
| 1107 /* fast RGB555->RGB555 blending with surface alpha */ | |
| 1108 static void Blit555to555SurfaceAlpha(SDL_BlitInfo *info) | |
| 1109 { | |
|
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1110 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
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1111 if(alpha == 128) { |
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1112 Blit16to16SurfaceAlpha128(info, 0xfbde); |
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1113 } else { |
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1114 int width = info->d_width; |
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1115 int height = info->d_height; |
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1116 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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1117 int srcskip = info->s_skip >> 1; |
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1118 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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1119 int dstskip = info->d_skip >> 1; |
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1120 alpha >>= 3; /* downscale alpha to 5 bits */ |
| 0 | 1121 |
|
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1122 while(height--) { |
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1123 DUFFS_LOOP4({ |
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1124 Uint32 s = *srcp++; |
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1125 Uint32 d = *dstp; |
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1126 /* |
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1127 * shift out the middle component (green) to |
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1128 * the high 16 bits, and process all three RGB |
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1129 * components at the same time. |
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1130 */ |
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1131 s = (s | s << 16) & 0x03e07c1f; |
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1132 d = (d | d << 16) & 0x03e07c1f; |
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1133 d += (s - d) * alpha >> 5; |
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1134 d &= 0x03e07c1f; |
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1135 *dstp++ = d | d >> 16; |
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1136 }, width); |
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1137 srcp += srcskip; |
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1138 dstp += dstskip; |
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1139 } |
| 0 | 1140 } |
| 1141 } | |
| 1142 | |
| 1143 /* fast ARGB8888->RGB565 blending with pixel alpha */ | |
| 1144 static void BlitARGBto565PixelAlpha(SDL_BlitInfo *info) | |
| 1145 { | |
| 1146 int width = info->d_width; | |
| 1147 int height = info->d_height; | |
| 1148 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
| 1149 int srcskip = info->s_skip >> 2; | |
| 1150 Uint16 *dstp = (Uint16 *)info->d_pixels; | |
| 1151 int dstskip = info->d_skip >> 1; | |
| 1152 | |
| 1153 while(height--) { | |
| 1154 DUFFS_LOOP4({ | |
| 1155 Uint32 s = *srcp; | |
| 1156 unsigned alpha = s >> 27; /* downscale alpha to 5 bits */ | |
| 1157 /* FIXME: Here we special-case opaque alpha since the | |
| 1158 compositioning used (>>8 instead of /255) doesn't handle | |
| 1159 it correctly. Also special-case alpha=0 for speed? | |
| 1160 Benchmark this! */ | |
|
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1161 if(alpha) { |
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1162 if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
| 0 | 1163 *dstp = (s >> 8 & 0xf800) + (s >> 5 & 0x7e0) |
| 1164 + (s >> 3 & 0x1f); | |
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1165 } else { |
| 0 | 1166 Uint32 d = *dstp; |
| 1167 /* | |
| 1168 * convert source and destination to G0RAB65565 | |
| 1169 * and blend all components at the same time | |
| 1170 */ | |
| 1171 s = ((s & 0xfc00) << 11) + (s >> 8 & 0xf800) | |
| 1172 + (s >> 3 & 0x1f); | |
| 1173 d = (d | d << 16) & 0x07e0f81f; | |
| 1174 d += (s - d) * alpha >> 5; | |
| 1175 d &= 0x07e0f81f; | |
| 1176 *dstp = d | d >> 16; | |
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1177 } |
| 0 | 1178 } |
| 1179 srcp++; | |
| 1180 dstp++; | |
| 1181 }, width); | |
| 1182 srcp += srcskip; | |
| 1183 dstp += dstskip; | |
| 1184 } | |
| 1185 } | |
| 1186 | |
| 1187 /* fast ARGB8888->RGB555 blending with pixel alpha */ | |
| 1188 static void BlitARGBto555PixelAlpha(SDL_BlitInfo *info) | |
| 1189 { | |
| 1190 int width = info->d_width; | |
| 1191 int height = info->d_height; | |
| 1192 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
| 1193 int srcskip = info->s_skip >> 2; | |
| 1194 Uint16 *dstp = (Uint16 *)info->d_pixels; | |
| 1195 int dstskip = info->d_skip >> 1; | |
| 1196 | |
| 1197 while(height--) { | |
| 1198 DUFFS_LOOP4({ | |
| 1199 unsigned alpha; | |
| 1200 Uint32 s = *srcp; | |
| 1201 alpha = s >> 27; /* downscale alpha to 5 bits */ | |
| 1202 /* FIXME: Here we special-case opaque alpha since the | |
| 1203 compositioning used (>>8 instead of /255) doesn't handle | |
| 1204 it correctly. Also special-case alpha=0 for speed? | |
| 1205 Benchmark this! */ | |
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1206 if(alpha) { |
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1207 if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
| 0 | 1208 *dstp = (s >> 9 & 0x7c00) + (s >> 6 & 0x3e0) |
| 1209 + (s >> 3 & 0x1f); | |
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1210 } else { |
| 0 | 1211 Uint32 d = *dstp; |
| 1212 /* | |
| 1213 * convert source and destination to G0RAB65565 | |
| 1214 * and blend all components at the same time | |
| 1215 */ | |
| 1216 s = ((s & 0xf800) << 10) + (s >> 9 & 0x7c00) | |
| 1217 + (s >> 3 & 0x1f); | |
| 1218 d = (d | d << 16) & 0x03e07c1f; | |
| 1219 d += (s - d) * alpha >> 5; | |
| 1220 d &= 0x03e07c1f; | |
| 1221 *dstp = d | d >> 16; | |
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1222 } |
| 0 | 1223 } |
| 1224 srcp++; | |
| 1225 dstp++; | |
| 1226 }, width); | |
| 1227 srcp += srcskip; | |
| 1228 dstp += dstskip; | |
| 1229 } | |
| 1230 } | |
| 1231 | |
| 1232 /* General (slow) N->N blending with per-surface alpha */ | |
| 1233 static void BlitNtoNSurfaceAlpha(SDL_BlitInfo *info) | |
| 1234 { | |
| 1235 int width = info->d_width; | |
| 1236 int height = info->d_height; | |
| 1237 Uint8 *src = info->s_pixels; | |
| 1238 int srcskip = info->s_skip; | |
| 1239 Uint8 *dst = info->d_pixels; | |
| 1240 int dstskip = info->d_skip; | |
| 1241 SDL_PixelFormat *srcfmt = info->src; | |
| 1242 SDL_PixelFormat *dstfmt = info->dst; | |
| 1243 int srcbpp = srcfmt->BytesPerPixel; | |
| 1244 int dstbpp = dstfmt->BytesPerPixel; | |
| 1245 unsigned sA = srcfmt->alpha; | |
| 1246 unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; | |
| 1247 | |
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1248 if(sA) { |
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1249 while ( height-- ) { |
| 0 | 1250 DUFFS_LOOP4( |
| 1251 { | |
| 1252 Uint32 pixel; | |
| 1253 unsigned sR; | |
| 1254 unsigned sG; | |
| 1255 unsigned sB; | |
| 1256 unsigned dR; | |
| 1257 unsigned dG; | |
| 1258 unsigned dB; | |
| 1259 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB); | |
| 1260 DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); | |
| 1261 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); | |
| 1262 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); | |
| 1263 src += srcbpp; | |
| 1264 dst += dstbpp; | |
| 1265 }, | |
| 1266 width); | |
| 1267 src += srcskip; | |
| 1268 dst += dstskip; | |
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1269 } |
| 0 | 1270 } |
| 1271 } | |
| 1272 | |
| 1273 /* General (slow) colorkeyed N->N blending with per-surface alpha */ | |
| 1274 static void BlitNtoNSurfaceAlphaKey(SDL_BlitInfo *info) | |
| 1275 { | |
| 1276 int width = info->d_width; | |
| 1277 int height = info->d_height; | |
| 1278 Uint8 *src = info->s_pixels; | |
| 1279 int srcskip = info->s_skip; | |
| 1280 Uint8 *dst = info->d_pixels; | |
| 1281 int dstskip = info->d_skip; | |
| 1282 SDL_PixelFormat *srcfmt = info->src; | |
| 1283 SDL_PixelFormat *dstfmt = info->dst; | |
| 1284 Uint32 ckey = srcfmt->colorkey; | |
| 1285 int srcbpp = srcfmt->BytesPerPixel; | |
| 1286 int dstbpp = dstfmt->BytesPerPixel; | |
| 1287 unsigned sA = srcfmt->alpha; | |
| 1288 unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; | |
| 1289 | |
| 1290 while ( height-- ) { | |
| 1291 DUFFS_LOOP4( | |
| 1292 { | |
| 1293 Uint32 pixel; | |
| 1294 unsigned sR; | |
| 1295 unsigned sG; | |
| 1296 unsigned sB; | |
| 1297 unsigned dR; | |
| 1298 unsigned dG; | |
| 1299 unsigned dB; | |
| 1300 RETRIEVE_RGB_PIXEL(src, srcbpp, pixel); | |
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1301 if(sA && pixel != ckey) { |
| 0 | 1302 RGB_FROM_PIXEL(pixel, srcfmt, sR, sG, sB); |
| 1303 DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); | |
| 1304 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); | |
| 1305 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); | |
| 1306 } | |
| 1307 src += srcbpp; | |
| 1308 dst += dstbpp; | |
| 1309 }, | |
| 1310 width); | |
| 1311 src += srcskip; | |
| 1312 dst += dstskip; | |
| 1313 } | |
| 1314 } | |
| 1315 | |
| 1316 /* General (slow) N->N blending with pixel alpha */ | |
| 1317 static void BlitNtoNPixelAlpha(SDL_BlitInfo *info) | |
| 1318 { | |
| 1319 int width = info->d_width; | |
| 1320 int height = info->d_height; | |
| 1321 Uint8 *src = info->s_pixels; | |
| 1322 int srcskip = info->s_skip; | |
| 1323 Uint8 *dst = info->d_pixels; | |
| 1324 int dstskip = info->d_skip; | |
| 1325 SDL_PixelFormat *srcfmt = info->src; | |
| 1326 SDL_PixelFormat *dstfmt = info->dst; | |
| 1327 | |
| 1328 int srcbpp; | |
| 1329 int dstbpp; | |
| 1330 | |
| 1331 /* Set up some basic variables */ | |
| 1332 srcbpp = srcfmt->BytesPerPixel; | |
| 1333 dstbpp = dstfmt->BytesPerPixel; | |
| 1334 | |
| 1335 /* FIXME: for 8bpp source alpha, this doesn't get opaque values | |
| 1336 quite right. for <8bpp source alpha, it gets them very wrong | |
| 1337 (check all macros!) | |
| 1338 It is unclear whether there is a good general solution that doesn't | |
| 1339 need a branch (or a divide). */ | |
| 1340 while ( height-- ) { | |
| 1341 DUFFS_LOOP4( | |
| 1342 { | |
| 1343 Uint32 pixel; | |
| 1344 unsigned sR; | |
| 1345 unsigned sG; | |
| 1346 unsigned sB; | |
| 1347 unsigned dR; | |
| 1348 unsigned dG; | |
| 1349 unsigned dB; | |
| 1350 unsigned sA; | |
| 1351 unsigned dA; | |
| 1352 DISEMBLE_RGBA(src, srcbpp, srcfmt, pixel, sR, sG, sB, sA); | |
|
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1353 if(sA) { |
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1354 DISEMBLE_RGBA(dst, dstbpp, dstfmt, pixel, dR, dG, dB, dA); |
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1355 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
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1356 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
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1357 } |
| 0 | 1358 src += srcbpp; |
| 1359 dst += dstbpp; | |
| 1360 }, | |
| 1361 width); | |
| 1362 src += srcskip; | |
| 1363 dst += dstskip; | |
| 1364 } | |
| 1365 } | |
| 1366 | |
| 1367 | |
| 1368 SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index) | |
| 1369 { | |
| 1370 SDL_PixelFormat *sf = surface->format; | |
| 1371 SDL_PixelFormat *df = surface->map->dst->format; | |
| 1372 | |
| 1373 if(sf->Amask == 0) { | |
| 1374 if((surface->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) { | |
| 1375 if(df->BytesPerPixel == 1) | |
| 1376 return BlitNto1SurfaceAlphaKey; | |
| 1377 else | |
| 1378 return BlitNtoNSurfaceAlphaKey; | |
| 1379 } else { | |
| 1380 /* Per-surface alpha blits */ | |
| 1381 switch(df->BytesPerPixel) { | |
| 1382 case 1: | |
| 1383 return BlitNto1SurfaceAlpha; | |
| 1384 | |
| 1385 case 2: | |
| 1386 if(surface->map->identity) { | |
| 1387 if(df->Gmask == 0x7e0) | |
|
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1388 { |
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1389 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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1390 if((CPU_Flags()&MMX_CPU)!=0) |
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1391 return Blit565to565SurfaceAlphaMMX; |
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1392 else |
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1393 #endif |
| 0 | 1394 return Blit565to565SurfaceAlpha; |
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1395 } |
| 0 | 1396 else if(df->Gmask == 0x3e0) |
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1397 { |
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1398 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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1399 if((CPU_Flags()&MMX_CPU)!=0) |
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1400 return Blit555to555SurfaceAlphaMMX; |
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1401 else |
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1402 #endif |
| 0 | 1403 return Blit555to555SurfaceAlpha; |
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1404 } |
| 0 | 1405 } |
| 1406 return BlitNtoNSurfaceAlpha; | |
| 1407 | |
| 1408 case 4: | |
| 1409 if(sf->Rmask == df->Rmask | |
| 1410 && sf->Gmask == df->Gmask | |
| 1411 && sf->Bmask == df->Bmask | |
| 1412 && (sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff | |
| 1413 && sf->BytesPerPixel == 4) | |
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1414 { |
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1415 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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1416 if((CPU_Flags()&MMX_CPU)!=0) |
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1417 return BlitRGBtoRGBSurfaceAlphaMMX; |
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1418 else |
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1419 #endif |
| 0 | 1420 return BlitRGBtoRGBSurfaceAlpha; |
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1421 } |
| 0 | 1422 else |
| 1423 return BlitNtoNSurfaceAlpha; | |
| 1424 | |
| 1425 case 3: | |
| 1426 default: | |
| 1427 return BlitNtoNSurfaceAlpha; | |
| 1428 } | |
| 1429 } | |
| 1430 } else { | |
| 1431 /* Per-pixel alpha blits */ | |
| 1432 switch(df->BytesPerPixel) { | |
| 1433 case 1: | |
| 1434 return BlitNto1PixelAlpha; | |
| 1435 | |
| 1436 case 2: | |
| 1437 if(sf->BytesPerPixel == 4 && sf->Amask == 0xff000000 | |
| 1438 && sf->Gmask == 0xff00 | |
| 1439 && ((sf->Rmask == 0xff && df->Rmask == 0x1f) | |
| 1440 || (sf->Bmask == 0xff && df->Bmask == 0x1f))) { | |
| 1441 if(df->Gmask == 0x7e0) | |
| 1442 return BlitARGBto565PixelAlpha; | |
| 1443 else if(df->Gmask == 0x3e0) | |
| 1444 return BlitARGBto555PixelAlpha; | |
| 1445 } | |
| 1446 return BlitNtoNPixelAlpha; | |
| 1447 | |
| 1448 case 4: | |
| 1449 if(sf->Amask == 0xff000000 | |
| 1450 && sf->Rmask == df->Rmask | |
| 1451 && sf->Gmask == df->Gmask | |
| 1452 && sf->Bmask == df->Bmask | |
| 1453 && sf->BytesPerPixel == 4) | |
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1454 { |
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1455 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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1456 Uint32 f; |
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1457 f=CPU_Flags(); |
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1458 if((f&(TDNOW_CPU|MMX_CPU))==(TDNOW_CPU|MMX_CPU)) |
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1459 return BlitRGBtoRGBPixelAlphaMMX3DNOW; |
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1460 else |
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1461 if((f&MMX_CPU)!=0) |
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1462 return BlitRGBtoRGBPixelAlphaMMX; |
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1463 else |
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1464 #endif |
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1465 return BlitRGBtoRGBPixelAlpha; |
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1466 } |
| 0 | 1467 return BlitNtoNPixelAlpha; |
| 1468 | |
| 1469 case 3: | |
| 1470 default: | |
| 1471 return BlitNtoNPixelAlpha; | |
| 1472 } | |
| 1473 } | |
| 1474 } | |
| 1475 |