Mercurial > sdl-ios-xcode
annotate src/video/SDL_blit_A.c @ 889:eac8c69b5706
ate: Fri, 09 Apr 2004 20:07:10 +0200
From: Hibernatus
Subject: [SDL] BUG: changing video mode in opengl + windows
In WIN_GL_SetupWindow (SDL12/src/video/wincommon/SDL_wingl.c) you call
WIN_GL_ResetWindow when SetPixelFormat fails.
WIN_GL_ResetWindow cannot properly work in its current state, because there
are several things to update once you've created a new window. At least
DirectInput doesn't work anymore here (which is somewhat annoying for the
player :).
I think you can simply remove that function. Many games don't try to
recover from that exception, that's why the newest ATI drivers emulate 16
bpp display in 32 bpp mode so the error never occurs (but the games may run
much slower).
Having SDL_SetVideoMode return NULL would be better than actually setting
the video mode and losing focus, directinput and maybe directsound too. It
also made my previous drivers crash (when switching from 32 bpp windowed to
16 bpp fullscreen).
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 16 May 2004 18:02:48 +0000 |
parents | 9ef41050100c |
children | ffaaf7ecf685 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2004 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(__x86_64__)) && defined(__GNUC__) && defined(USE_ASMBLIT) |
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35 #define MMX_ASMBLIT |
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36 #endif |
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37 |
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38 #ifdef MMX_ASMBLIT |
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39 /* Function to check the CPU flags */ |
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40 #include "SDL_cpuinfo.h" |
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41 #include "mmx.h" |
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42 #endif |
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43 |
0 | 44 /* Functions to perform alpha blended blitting */ |
45 | |
46 /* N->1 blending with per-surface alpha */ | |
47 static void BlitNto1SurfaceAlpha(SDL_BlitInfo *info) | |
48 { | |
49 int width = info->d_width; | |
50 int height = info->d_height; | |
51 Uint8 *src = info->s_pixels; | |
52 int srcskip = info->s_skip; | |
53 Uint8 *dst = info->d_pixels; | |
54 int dstskip = info->d_skip; | |
55 Uint8 *palmap = info->table; | |
56 SDL_PixelFormat *srcfmt = info->src; | |
57 SDL_PixelFormat *dstfmt = info->dst; | |
58 int srcbpp = srcfmt->BytesPerPixel; | |
59 | |
60 const unsigned A = srcfmt->alpha; | |
61 | |
62 while ( height-- ) { | |
63 DUFFS_LOOP4( | |
64 { | |
65 Uint32 pixel; | |
66 unsigned sR; | |
67 unsigned sG; | |
68 unsigned sB; | |
69 unsigned dR; | |
70 unsigned dG; | |
71 unsigned dB; | |
72 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB); | |
73 dR = dstfmt->palette->colors[*dst].r; | |
74 dG = dstfmt->palette->colors[*dst].g; | |
75 dB = dstfmt->palette->colors[*dst].b; | |
76 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); | |
77 dR &= 0xff; | |
78 dG &= 0xff; | |
79 dB &= 0xff; | |
80 /* Pack RGB into 8bit pixel */ | |
81 if ( palmap == NULL ) { | |
82 *dst =((dR>>5)<<(3+2))| | |
83 ((dG>>5)<<(2))| | |
84 ((dB>>6)<<(0)); | |
85 } else { | |
86 *dst = palmap[((dR>>5)<<(3+2))| | |
87 ((dG>>5)<<(2)) | | |
88 ((dB>>6)<<(0))]; | |
89 } | |
90 dst++; | |
91 src += srcbpp; | |
92 }, | |
93 width); | |
94 src += srcskip; | |
95 dst += dstskip; | |
96 } | |
97 } | |
98 | |
99 /* N->1 blending with pixel alpha */ | |
100 static void BlitNto1PixelAlpha(SDL_BlitInfo *info) | |
101 { | |
102 int width = info->d_width; | |
103 int height = info->d_height; | |
104 Uint8 *src = info->s_pixels; | |
105 int srcskip = info->s_skip; | |
106 Uint8 *dst = info->d_pixels; | |
107 int dstskip = info->d_skip; | |
108 Uint8 *palmap = info->table; | |
109 SDL_PixelFormat *srcfmt = info->src; | |
110 SDL_PixelFormat *dstfmt = info->dst; | |
111 int srcbpp = srcfmt->BytesPerPixel; | |
112 | |
113 /* FIXME: fix alpha bit field expansion here too? */ | |
114 while ( height-- ) { | |
115 DUFFS_LOOP4( | |
116 { | |
117 Uint32 pixel; | |
118 unsigned sR; | |
119 unsigned sG; | |
120 unsigned sB; | |
121 unsigned sA; | |
122 unsigned dR; | |
123 unsigned dG; | |
124 unsigned dB; | |
125 DISEMBLE_RGBA(src,srcbpp,srcfmt,pixel,sR,sG,sB,sA); | |
126 dR = dstfmt->palette->colors[*dst].r; | |
127 dG = dstfmt->palette->colors[*dst].g; | |
128 dB = dstfmt->palette->colors[*dst].b; | |
129 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); | |
130 dR &= 0xff; | |
131 dG &= 0xff; | |
132 dB &= 0xff; | |
133 /* Pack RGB into 8bit pixel */ | |
134 if ( palmap == NULL ) { | |
135 *dst =((dR>>5)<<(3+2))| | |
136 ((dG>>5)<<(2))| | |
137 ((dB>>6)<<(0)); | |
138 } else { | |
139 *dst = palmap[((dR>>5)<<(3+2))| | |
140 ((dG>>5)<<(2)) | | |
141 ((dB>>6)<<(0)) ]; | |
142 } | |
143 dst++; | |
144 src += srcbpp; | |
145 }, | |
146 width); | |
147 src += srcskip; | |
148 dst += dstskip; | |
149 } | |
150 } | |
151 | |
152 /* colorkeyed N->1 blending with per-surface alpha */ | |
153 static void BlitNto1SurfaceAlphaKey(SDL_BlitInfo *info) | |
154 { | |
155 int width = info->d_width; | |
156 int height = info->d_height; | |
157 Uint8 *src = info->s_pixels; | |
158 int srcskip = info->s_skip; | |
159 Uint8 *dst = info->d_pixels; | |
160 int dstskip = info->d_skip; | |
161 Uint8 *palmap = info->table; | |
162 SDL_PixelFormat *srcfmt = info->src; | |
163 SDL_PixelFormat *dstfmt = info->dst; | |
164 int srcbpp = srcfmt->BytesPerPixel; | |
165 Uint32 ckey = srcfmt->colorkey; | |
166 | |
167 const int A = srcfmt->alpha; | |
168 | |
169 while ( height-- ) { | |
170 DUFFS_LOOP( | |
171 { | |
172 Uint32 pixel; | |
173 unsigned sR; | |
174 unsigned sG; | |
175 unsigned sB; | |
176 unsigned dR; | |
177 unsigned dG; | |
178 unsigned dB; | |
179 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB); | |
180 if ( pixel != ckey ) { | |
181 dR = dstfmt->palette->colors[*dst].r; | |
182 dG = dstfmt->palette->colors[*dst].g; | |
183 dB = dstfmt->palette->colors[*dst].b; | |
184 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); | |
185 dR &= 0xff; | |
186 dG &= 0xff; | |
187 dB &= 0xff; | |
188 /* Pack RGB into 8bit pixel */ | |
189 if ( palmap == NULL ) { | |
190 *dst =((dR>>5)<<(3+2))| | |
191 ((dG>>5)<<(2)) | | |
192 ((dB>>6)<<(0)); | |
193 } else { | |
194 *dst = palmap[((dR>>5)<<(3+2))| | |
195 ((dG>>5)<<(2)) | | |
196 ((dB>>6)<<(0)) ]; | |
197 } | |
198 } | |
199 dst++; | |
200 src += srcbpp; | |
201 }, | |
202 width); | |
203 src += srcskip; | |
204 dst += dstskip; | |
205 } | |
206 } | |
207 | |
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208 #ifdef MMX_ASMBLIT |
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209 /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
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210 static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info) |
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211 { |
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212 int width = info->d_width; |
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213 int height = info->d_height; |
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214 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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215 int srcskip = info->s_skip >> 2; |
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216 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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217 int dstskip = info->d_skip >> 2; |
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218 Uint8 load[8]; |
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219 |
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220 *(Uint64 *)load = 0x00fefefe00fefefeULL;/* alpha128 mask */ |
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221 movq_m2r(*load, mm4); /* alpha128 mask -> mm4 */ |
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222 *(Uint64 *)load = 0x0001010100010101ULL;/* !alpha128 mask */ |
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223 movq_m2r(*load, mm3); /* !alpha128 mask -> mm3 */ |
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224 *(Uint64 *)load = 0xFF000000FF000000ULL;/* dst alpha mask */ |
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225 movq_m2r(*load, mm7); /* dst alpha mask -> mm7 */ |
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226 while(height--) { |
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227 DUFFS_LOOP_DOUBLE2( |
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228 { |
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229 Uint32 s = *srcp++; |
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230 Uint32 d = *dstp; |
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231 *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
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232 + (s & d & 0x00010101)) | 0xff000000; |
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233 },{ |
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234 movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
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235 movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
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236 |
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237 movq_m2r((*srcp), mm1);/* 2 x src -> mm1(ARGBARGB) */ |
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238 movq_r2r(mm1, mm5); /* 2 x src -> mm5(ARGBARGB) */ |
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239 |
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240 pand_r2r(mm4, mm6); /* dst & mask -> mm6 */ |
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241 pand_r2r(mm4, mm5); /* src & mask -> mm5 */ |
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242 paddd_r2r(mm6, mm5); /* mm6 + mm5 -> mm5 */ |
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243 psrld_i2r(1, mm5); /* mm5 >> 1 -> mm5 */ |
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244 |
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245 pand_r2r(mm1, mm2); /* src & dst -> mm2 */ |
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246 pand_r2r(mm3, mm2); /* mm2 & !mask -> mm2 */ |
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247 paddd_r2r(mm5, mm2); /* mm5 + mm2 -> mm2 */ |
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248 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
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249 movq_r2m(mm2, (*dstp));/* mm2 -> 2 x dst pixels */ |
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250 dstp += 2; |
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251 srcp += 2; |
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252 }, width); |
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253 srcp += srcskip; |
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254 dstp += dstskip; |
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255 } |
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256 emms(); |
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257 } |
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258 |
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259 /* fast RGB888->(A)RGB888 blending with surface alpha */ |
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260 static void BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info) |
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261 { |
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262 unsigned alpha = info->src->alpha; |
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263 if(alpha == 128) { |
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264 BlitRGBtoRGBSurfaceAlpha128MMX(info); |
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265 } else { |
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266 int width = info->d_width; |
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267 int height = info->d_height; |
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268 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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269 int srcskip = info->s_skip >> 2; |
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270 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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271 int dstskip = info->d_skip >> 2; |
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272 Uint8 load[8] = {alpha, alpha, alpha, alpha, |
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273 alpha, alpha, alpha, alpha}; |
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274 |
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275 movq_m2r(*load, mm4); /* alpha -> mm4 */ |
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276 *(Uint64 *)load = 0x00FF00FF00FF00FFULL; |
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277 movq_m2r(*load, mm3); /* mask -> mm3 */ |
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278 pand_r2r(mm3, mm4); /* mm4 & mask -> 0A0A0A0A -> mm4 */ |
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279 *(Uint64 *)load = 0xFF000000FF000000ULL;/* dst alpha mask */ |
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280 movq_m2r(*load, mm7); /* dst alpha mask -> mm7 */ |
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281 |
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282 while(height--) { |
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283 DUFFS_LOOP_DOUBLE2({ |
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284 /* One Pixel Blend */ |
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285 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
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286 punpcklbw_r2r(mm1, mm1); /* AARRGGBB -> mm1 */ |
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287 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1 */ |
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288 |
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289 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
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290 movq_r2r(mm2, mm6);/* dst(ARGB) -> mm6 (0000ARGB)*/ |
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291 punpcklbw_r2r(mm2, mm2); /* AARRGGBB -> mm2 */ |
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292 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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293 |
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294 psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
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295 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
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296 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
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297 paddw_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
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298 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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299 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */ |
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300 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
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301 movd_r2m(mm2, *dstp);/* mm2 -> pixel */ |
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302 ++srcp; |
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303 ++dstp; |
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304 },{ |
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305 /* Two Pixels Blend */ |
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306 movq_m2r((*srcp), mm0);/* 2 x src -> mm0(ARGBARGB)*/ |
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307 movq_r2r(mm0, mm1); /* 2 x src -> mm1(ARGBARGB) */ |
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308 punpcklbw_r2r(mm0, mm0); /* low - AARRGGBB -> mm0 */ |
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309 pand_r2r(mm3, mm0); /* 0A0R0G0B -> mm0(src1) */ |
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310 punpckhbw_r2r(mm1, mm1); /* high - AARRGGBB -> mm1 */ |
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311 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1(src2) */ |
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312 |
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313 movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
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314 movq_r2r(mm2, mm5); /* 2 x dst -> mm5(ARGBARGB) */ |
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315 movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
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316 punpcklbw_r2r(mm2, mm2); /* low - AARRGGBB -> mm2 */ |
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317 punpckhbw_r2r(mm6, mm6); /* high - AARRGGBB -> mm6 */ |
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318 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2(dst1) */ |
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319 |
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320 psubw_r2r(mm2, mm0);/* src1 - dst1 -> mm0 */ |
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321 pmullw_r2r(mm4, mm0); /* mm0 * alpha -> mm0 */ |
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322 pand_r2r(mm3, mm6); /* 0A0R0G0B -> mm6(dst2) */ |
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323 psrlw_i2r(8, mm0); /* mm0 >> 8 -> mm1 */ |
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324 psubw_r2r(mm6, mm1);/* src2 - dst2 -> mm1 */ |
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325 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
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326 paddw_r2r(mm0, mm2); /* mm0 + mm2(dst1) -> mm2 */ |
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327 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm0 */ |
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328 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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329 paddw_r2r(mm1, mm6); /* mm1 + mm6(dst2) -> mm6 */ |
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330 pand_r2r(mm3, mm6); /* 0A0R0G0B -> mm6 */ |
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331 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */ |
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332 packuswb_r2r(mm6, mm6); /* ARGBARGB -> mm6 */ |
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333 psrlq_i2r(32, mm2); /* mm2 >> 32 -> mm2 */ |
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334 psllq_i2r(32, mm6); /* mm6 << 32 -> mm6 */ |
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335 por_r2r(mm6, mm2); /* mm6 | mm2 -> mm2 */ |
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336 por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
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337 movq_r2m(mm2, *dstp);/* mm2 -> 2 x pixel */ |
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338 srcp += 2; |
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339 dstp += 2; |
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340 }, width); |
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341 srcp += srcskip; |
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342 dstp += dstskip; |
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343 } |
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344 emms(); |
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345 } |
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346 } |
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347 |
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348 /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
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349 static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info) |
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350 { |
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351 int width = info->d_width; |
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352 int height = info->d_height; |
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353 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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354 int srcskip = info->s_skip >> 2; |
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355 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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356 int dstskip = info->d_skip >> 2; |
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357 Uint32 alpha = 0; |
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358 Uint8 load[8]; |
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359 |
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360 *(Uint64 *)load = 0x00FF00FF00FF00FFULL; |
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361 movq_m2r(*load, mm3); /* mask -> mm2 */ |
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362 *(Uint64 *)load = 0x00FF000000000000ULL; |
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363 movq_m2r(*load, mm7); /* dst alpha mask -> mm2 */ |
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364 *(Uint64 *)load = 0x00FFFFFF00FFFFFFULL; |
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365 movq_m2r(*load, mm0); /* alpha 255 mask -> mm0 */ |
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366 *(Uint64 *)load = 0xFF000000FF000000ULL; |
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367 movq_m2r(*load, mm6); /* alpha 255 !mask -> mm6 */ |
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368 while(height--) { |
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369 DUFFS_LOOP4({ |
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370 alpha = *srcp; |
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371 alpha >>= 24; |
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372 /* FIXME: Here we special-case opaque alpha since the |
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373 compositioning used (>>8 instead of /255) doesn't handle |
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374 it correctly. Also special-case alpha=0 for speed? |
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375 Benchmark this! */ |
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376 if(alpha) { |
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377 if(alpha == SDL_ALPHA_OPAQUE) { |
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378 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
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379 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
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380 pand_r2r(mm0, mm1); |
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381 pand_r2r(mm6, mm2); |
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382 por_r2r(mm1, mm2); |
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383 movd_r2m(mm2, (*dstp)); |
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384 } else { |
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385 movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
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386 punpcklbw_r2r(mm1, mm1); /* AARRGGBB -> mm1 */ |
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387 pand_r2r(mm3, mm1); /* 0A0R0G0B -> mm1 */ |
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388 |
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389 movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
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390 punpcklbw_r2r(mm2, mm2); /* AARRGGBB -> mm2 */ |
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391 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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392 |
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393 movq_r2r(mm2, mm5);/* mm2(0A0R0G0B) -> mm5 */ |
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394 pand_r2r(mm7, mm5); /* mm5 & dst alpha mask -> mm5(0A000000) */ |
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395 psrlq_i2r(24, mm5); /* mm5 >> 24 -> mm5 (0000A000)*/ |
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396 |
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397 movq_r2r(mm1, mm4);/* mm1(0A0R0G0B) -> mm4 */ |
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398 psrlq_i2r(48, mm4); /* mm4 >> 48 -> mm4(0000000A) */ |
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399 punpcklwd_r2r(mm4, mm4); /* 00000A0A -> mm4 */ |
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400 punpcklwd_r2r(mm4, mm4); /* 0A0A0A0A -> mm4 */ |
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401 |
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402 /* blend */ |
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403 psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
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404 pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
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405 psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
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406 paddw_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
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407 pand_r2r(mm3, mm2); /* 0A0R0G0B -> mm2 */ |
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408 packuswb_r2r(mm2, mm2); /* ARGBARGB -> mm2 */ |
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409 pand_r2r(mm0, mm2); /* 0RGB0RGB -> mm2 */ |
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410 por_r2r(mm5, mm2); /* dst alpha | mm2 -> mm2 */ |
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411 movd_r2m(mm2, *dstp);/* mm2 -> dst */ |
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412 } |
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413 } |
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414 ++srcp; |
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415 ++dstp; |
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416 }, width); |
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417 srcp += srcskip; |
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418 dstp += dstskip; |
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419 } |
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420 emms(); |
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421 } |
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422 #endif |
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423 |
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424 /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
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425 static void BlitRGBtoRGBSurfaceAlpha128(SDL_BlitInfo *info) |
0 | 426 { |
427 int width = info->d_width; | |
428 int height = info->d_height; | |
429 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
430 int srcskip = info->s_skip >> 2; | |
431 Uint32 *dstp = (Uint32 *)info->d_pixels; | |
432 int dstskip = info->d_skip >> 2; | |
433 | |
434 while(height--) { | |
435 DUFFS_LOOP4({ | |
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436 Uint32 s = *srcp++; |
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437 Uint32 d = *dstp; |
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438 *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
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439 + (s & d & 0x00010101)) | 0xff000000; |
0 | 440 }, width); |
441 srcp += srcskip; | |
442 dstp += dstskip; | |
443 } | |
444 } | |
445 | |
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446 /* fast RGB888->(A)RGB888 blending with surface alpha */ |
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447 static void BlitRGBtoRGBSurfaceAlpha(SDL_BlitInfo *info) |
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448 { |
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449 unsigned alpha = info->src->alpha; |
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450 if(alpha == 128) { |
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451 BlitRGBtoRGBSurfaceAlpha128(info); |
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452 } else { |
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453 int width = info->d_width; |
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454 int height = info->d_height; |
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455 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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456 int srcskip = info->s_skip >> 2; |
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457 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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458 int dstskip = info->d_skip >> 2; |
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459 Uint32 s; |
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460 Uint32 d; |
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461 Uint32 s1; |
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462 Uint32 d1; |
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463 |
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464 while(height--) { |
689
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465 DUFFS_LOOP_DOUBLE2({ |
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466 /* One Pixel Blend */ |
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467 s = *srcp; |
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468 d = *dstp; |
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469 s1 = s & 0xff00ff; |
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470 d1 = d & 0xff00ff; |
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471 d1 = (d1 + ((s1 - d1) * alpha >> 8)) |
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472 & 0xff00ff; |
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473 s &= 0xff00; |
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474 d &= 0xff00; |
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475 d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
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476 *dstp = d1 | d | 0xff000000; |
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477 ++srcp; |
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478 ++dstp; |
689
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479 },{ |
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480 /* Two Pixels Blend */ |
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481 s = *srcp; |
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482 d = *dstp; |
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483 s1 = s & 0xff00ff; |
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484 d1 = d & 0xff00ff; |
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485 d1 += (s1 - d1) * alpha >> 8; |
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486 d1 &= 0xff00ff; |
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487 |
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488 s = ((s & 0xff00) >> 8) | |
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489 ((srcp[1] & 0xff00) << 8); |
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490 d = ((d & 0xff00) >> 8) | |
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491 ((dstp[1] & 0xff00) << 8); |
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492 d += (s - d) * alpha >> 8; |
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493 d &= 0x00ff00ff; |
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494 |
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495 *dstp++ = d1 | ((d << 8) & 0xff00) | 0xff000000; |
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496 ++srcp; |
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497 |
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498 s1 = *srcp; |
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499 d1 = *dstp; |
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500 s1 &= 0xff00ff; |
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501 d1 &= 0xff00ff; |
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502 d1 += (s1 - d1) * alpha >> 8; |
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503 d1 &= 0xff00ff; |
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504 |
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505 *dstp = d1 | ((d >> 8) & 0xff00) | 0xff000000; |
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506 ++srcp; |
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507 ++dstp; |
1
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508 }, width); |
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509 srcp += srcskip; |
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510 dstp += dstskip; |
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511 } |
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512 } |
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513 } |
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514 |
0 | 515 /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
516 static void BlitRGBtoRGBPixelAlpha(SDL_BlitInfo *info) | |
517 { | |
518 int width = info->d_width; | |
519 int height = info->d_height; | |
520 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
521 int srcskip = info->s_skip >> 2; | |
522 Uint32 *dstp = (Uint32 *)info->d_pixels; | |
523 int dstskip = info->d_skip >> 2; | |
524 | |
525 while(height--) { | |
526 DUFFS_LOOP4({ | |
527 Uint32 dalpha; | |
528 Uint32 d; | |
529 Uint32 s1; | |
530 Uint32 d1; | |
531 Uint32 s = *srcp; | |
532 Uint32 alpha = s >> 24; | |
533 /* FIXME: Here we special-case opaque alpha since the | |
534 compositioning used (>>8 instead of /255) doesn't handle | |
535 it correctly. Also special-case alpha=0 for speed? | |
536 Benchmark this! */ | |
689
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537 if(alpha) { |
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538 if(alpha == SDL_ALPHA_OPAQUE) { |
0 | 539 *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); |
689
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540 } else { |
0 | 541 /* |
542 * take out the middle component (green), and process | |
543 * the other two in parallel. One multiply less. | |
544 */ | |
545 d = *dstp; | |
546 dalpha = d & 0xff000000; | |
547 s1 = s & 0xff00ff; | |
548 d1 = d & 0xff00ff; | |
549 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; | |
550 s &= 0xff00; | |
551 d &= 0xff00; | |
552 d = (d + ((s - d) * alpha >> 8)) & 0xff00; | |
553 *dstp = d1 | d | dalpha; | |
689
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554 } |
0 | 555 } |
556 ++srcp; | |
557 ++dstp; | |
558 }, width); | |
559 srcp += srcskip; | |
560 dstp += dstskip; | |
561 } | |
562 } | |
563 | |
880
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564 #ifdef MMX_ASMBLIT |
689
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565 /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */ |
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566 inline static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info) |
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567 { |
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568 int width = info->d_width; |
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569 int height = info->d_height; |
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570 Uint32 *srcp = (Uint32 *)info->s_pixels; |
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571 int srcskip = info->s_skip >> 2; |
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572 Uint32 *dstp = (Uint32 *)info->d_pixels; |
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573 int dstskip = info->d_skip >> 2; |
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574 |
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575 Uint32 s; |
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576 Uint32 alpha; |
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577 |
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578 __asm__ ( |
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579 /* make mm6 all zeros. */ |
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580 "pxor %%mm6, %%mm6\n" |
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581 |
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582 /* Make a mask to preserve the alpha. */ |
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583 "pcmpeqb %%mm7, %%mm7\n\t" /* mm7(s) = FF FF FF FF | FF FF FF FF */ |
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584 "psrlq $16, %%mm7\n\t" /* mm7(s) = 00 00 FF FF | FF FF FF FF */ |
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585 |
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586 : ); |
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587 |
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588 while(height--) { |
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589 |
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590 DUFFS_LOOP4({ |
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591 |
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592 __asm__ ( |
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593 "prefetch 64(%0)\n" |
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594 "prefetch 64(%1)\n" |
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595 : : "r" (srcp), "r" (dstp) ); |
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596 |
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597 s = *srcp; |
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598 alpha = s >> 24; |
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599 /* FIXME: Here we special-case opaque alpha since the |
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600 compositioning used (>>8 instead of /255) doesn't handle |
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601 it correctly. Also special-case alpha=0 for speed? |
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602 Benchmark this! */ |
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603 |
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604 if(alpha == SDL_ALPHA_OPAQUE) { |
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605 *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); |
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606 } |
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607 |
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608 else { |
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609 __asm__ ( |
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610 /* load in the source, and dst. */ |
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611 "movd (%0), %%mm0\n" /* mm0(s) = 0 0 0 0 | As Rs Gs Bs */ |
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612 "movd (%1), %%mm1\n" /* mm1(d) = 0 0 0 0 | Ad Rd Gd Bd */ |
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613 |
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614 /* Move the src alpha into mm2 */ |
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615 |
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616 /* if supporting pshufw */ |
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617 /*"pshufw $0x55, %%mm0, %%mm2\n" */ /* mm2 = 0 As 0 As | 0 As 0 As */ |
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618 /*"psrlw $8, %%mm2\n" */ |
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619 |
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620 /* else: */ |
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621 "movq %%mm0, %%mm2\n" |
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622 "psrld $24, %%mm2\n" /* mm2 = 0 0 0 0 | 0 0 0 As */ |
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623 "punpcklwd %%mm2, %%mm2\n" /* mm2 = 0 0 0 0 | 0 As 0 As */ |
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624 "punpckldq %%mm2, %%mm2\n" /* mm2 = 0 As 0 As | 0 As 0 As */ |
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625 |
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626 /* move the colors into words. */ |
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627 "punpcklbw %%mm6, %%mm0\n" /* mm0 = 0 As 0 Rs | 0 Gs 0 Bs */ |
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628 "punpcklbw %%mm6, %%mm1\n" /* mm0 = 0 Ad 0 Rd | 0 Gd 0 Bd */ |
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629 |
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630 /* src - dst */ |
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631 "psubw %%mm1, %%mm0\n" /* mm0 = As-Ad Rs-Rd | Gs-Gd Bs-Bd */ |
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632 |
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633 /* A * (src-dst) */ |
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634 "pmullw %%mm2, %%mm0\n" /* mm0 = As*As-d As*Rs-d | As*Gs-d As*Bs-d */ |
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635 "pand %%mm7, %%mm0\n" /* to preserve dest alpha */ |
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636 "psrlw $8, %%mm0\n" /* mm0 = Ac>>8 Rc>>8 | Gc>>8 Bc>>8 */ |
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637 "paddb %%mm1, %%mm0\n" /* mm0 = Ac+Ad Rc+Rd | Gc+Gd Bc+Bd */ |
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638 |
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639 "packuswb %%mm0, %%mm0\n" /* mm0 = | Ac Rc Gc Bc */ |
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640 |
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641 "movd %%mm0, (%1)\n" /* result in mm0 */ |
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642 |
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643 : : "r" (srcp), "r" (dstp) ); |
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644 |
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645 } |
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646 ++srcp; |
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647 ++dstp; |
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648 }, width); |
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649 srcp += srcskip; |
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650 dstp += dstskip; |
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651 } |
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652 |
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653 __asm__ ( |
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654 "emms\n" |
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655 : ); |
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656 } |
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657 #endif |
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658 |
1
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659 /* 16bpp special case for per-surface alpha=50%: blend 2 pixels in parallel */ |
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660 |
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661 /* blend a single 16 bit pixel at 50% */ |
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662 #define BLEND16_50(d, s, mask) \ |
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663 ((((s & mask) + (d & mask)) >> 1) + (s & d & (~mask & 0xffff))) |
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664 |
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665 /* blend two 16 bit pixels at 50% */ |
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666 #define BLEND2x16_50(d, s, mask) \ |
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667 (((s & (mask | mask << 16)) >> 1) + ((d & (mask | mask << 16)) >> 1) \ |
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668 + (s & d & (~(mask | mask << 16)))) |
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669 |
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670 static void Blit16to16SurfaceAlpha128(SDL_BlitInfo *info, Uint16 mask) |
0 | 671 { |
672 int width = info->d_width; | |
673 int height = info->d_height; | |
674 Uint16 *srcp = (Uint16 *)info->s_pixels; | |
675 int srcskip = info->s_skip >> 1; | |
676 Uint16 *dstp = (Uint16 *)info->d_pixels; | |
677 int dstskip = info->d_skip >> 1; | |
678 | |
679 while(height--) { | |
1
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680 if(((unsigned long)srcp ^ (unsigned long)dstp) & 2) { |
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681 /* |
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|
682 * Source and destination not aligned, pipeline it. |
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683 * This is mostly a win for big blits but no loss for |
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684 * small ones |
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685 */ |
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686 Uint32 prev_sw; |
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687 int w = width; |
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688 |
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|
689 /* handle odd destination */ |
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|
690 if((unsigned long)dstp & 2) { |
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|
691 Uint16 d = *dstp, s = *srcp; |
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692 *dstp = BLEND16_50(d, s, mask); |
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|
693 dstp++; |
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|
694 srcp++; |
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|
695 w--; |
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|
696 } |
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|
697 srcp++; /* srcp is now 32-bit aligned */ |
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|
698 |
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|
699 /* bootstrap pipeline with first halfword */ |
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700 prev_sw = ((Uint32 *)srcp)[-1]; |
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|
701 |
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|
702 while(w > 1) { |
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|
703 Uint32 sw, dw, s; |
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|
704 sw = *(Uint32 *)srcp; |
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|
705 dw = *(Uint32 *)dstp; |
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|
706 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) |
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|
707 s = (prev_sw << 16) + (sw >> 16); |
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|
708 else |
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|
709 s = (prev_sw >> 16) + (sw << 16); |
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|
710 prev_sw = sw; |
cf2af46e9e2a
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|
711 *(Uint32 *)dstp = BLEND2x16_50(dw, s, mask); |
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|
712 dstp += 2; |
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|
713 srcp += 2; |
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|
714 w -= 2; |
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|
715 } |
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|
716 |
cf2af46e9e2a
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|
717 /* final pixel if any */ |
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|
718 if(w) { |
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|
719 Uint16 d = *dstp, s; |
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|
720 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) |
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|
721 s = prev_sw; |
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|
722 else |
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|
723 s = prev_sw >> 16; |
cf2af46e9e2a
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|
724 *dstp = BLEND16_50(d, s, mask); |
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|
725 srcp++; |
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|
726 dstp++; |
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|
727 } |
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|
728 srcp += srcskip - 1; |
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|
729 dstp += dstskip; |
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|
730 } else { |
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|
731 /* source and destination are aligned */ |
cf2af46e9e2a
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|
732 int w = width; |
cf2af46e9e2a
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|
733 |
cf2af46e9e2a
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diff
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|
734 /* first odd pixel? */ |
cf2af46e9e2a
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changeset
|
735 if((unsigned long)srcp & 2) { |
cf2af46e9e2a
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|
736 Uint16 d = *dstp, s = *srcp; |
cf2af46e9e2a
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|
737 *dstp = BLEND16_50(d, s, mask); |
cf2af46e9e2a
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diff
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|
738 srcp++; |
cf2af46e9e2a
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|
739 dstp++; |
cf2af46e9e2a
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diff
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|
740 w--; |
cf2af46e9e2a
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|
741 } |
cf2af46e9e2a
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0
diff
changeset
|
742 /* srcp and dstp are now 32-bit aligned */ |
cf2af46e9e2a
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diff
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|
743 |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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diff
changeset
|
744 while(w > 1) { |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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changeset
|
745 Uint32 sw = *(Uint32 *)srcp; |
cf2af46e9e2a
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diff
changeset
|
746 Uint32 dw = *(Uint32 *)dstp; |
cf2af46e9e2a
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changeset
|
747 *(Uint32 *)dstp = BLEND2x16_50(dw, sw, mask); |
cf2af46e9e2a
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changeset
|
748 srcp += 2; |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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diff
changeset
|
749 dstp += 2; |
cf2af46e9e2a
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changeset
|
750 w -= 2; |
cf2af46e9e2a
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diff
changeset
|
751 } |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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0
diff
changeset
|
752 |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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parents:
0
diff
changeset
|
753 /* last odd pixel? */ |
cf2af46e9e2a
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diff
changeset
|
754 if(w) { |
cf2af46e9e2a
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diff
changeset
|
755 Uint16 d = *dstp, s = *srcp; |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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changeset
|
756 *dstp = BLEND16_50(d, s, mask); |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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0
diff
changeset
|
757 srcp++; |
cf2af46e9e2a
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diff
changeset
|
758 dstp++; |
cf2af46e9e2a
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0
diff
changeset
|
759 } |
cf2af46e9e2a
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0
diff
changeset
|
760 srcp += srcskip; |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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diff
changeset
|
761 dstp += dstskip; |
cf2af46e9e2a
Changes since SDL 1.2.0 release
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diff
changeset
|
762 } |
cf2af46e9e2a
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parents:
0
diff
changeset
|
763 } |
cf2af46e9e2a
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parents:
0
diff
changeset
|
764 } |
cf2af46e9e2a
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0
diff
changeset
|
765 |
880
9ef41050100c
Date: Tue, 30 Mar 2004 21:26:47 -0600
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parents:
769
diff
changeset
|
766 #ifdef MMX_ASMBLIT |
689
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|
767 /* fast RGB565->RGB565 blending with surface alpha */ |
5bb080d35049
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|
768 static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info) |
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|
769 { |
5bb080d35049
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|
770 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
5bb080d35049
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|
771 if(alpha == 128) { |
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|
772 Blit16to16SurfaceAlpha128(info, 0xf7de); |
5bb080d35049
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773 } else { |
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774 int width = info->d_width; |
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775 int height = info->d_height; |
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776 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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777 int srcskip = info->s_skip >> 1; |
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778 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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779 int dstskip = info->d_skip >> 1; |
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780 Uint32 s, d; |
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781 Uint8 load[8]; |
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782 |
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783 alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
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784 *(Uint64 *)load = alpha; |
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785 alpha >>= 3; /* downscale alpha to 5 bits */ |
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786 |
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787 movq_m2r(*load, mm0); /* alpha(0000000A) -> mm0 */ |
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788 punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
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789 punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
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790 |
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791 /* Setup the 565 color channel masks */ |
720
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792 *(Uint64 *)load = 0xF800F800F800F800ULL; |
689
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793 movq_m2r(*load, mm1); /* MASKRED -> mm1 */ |
720
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794 *(Uint64 *)load = 0x07E007E007E007E0ULL; |
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795 movq_m2r(*load, mm4); /* MASKGREEN -> mm4 */ |
720
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796 *(Uint64 *)load = 0x001F001F001F001FULL; |
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797 movq_m2r(*load, mm7); /* MASKBLUE -> mm7 */ |
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798 while(height--) { |
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799 DUFFS_LOOP_QUATRO2( |
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800 { |
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801 s = *srcp++; |
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802 d = *dstp; |
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803 /* |
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804 * shift out the middle component (green) to |
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805 * the high 16 bits, and process all three RGB |
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806 * components at the same time. |
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807 */ |
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808 s = (s | s << 16) & 0x07e0f81f; |
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809 d = (d | d << 16) & 0x07e0f81f; |
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810 d += (s - d) * alpha >> 5; |
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811 d &= 0x07e0f81f; |
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812 *dstp++ = d | d >> 16; |
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813 },{ |
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814 s = *srcp++; |
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815 d = *dstp; |
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816 /* |
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817 * shift out the middle component (green) to |
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818 * the high 16 bits, and process all three RGB |
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819 * components at the same time. |
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820 */ |
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821 s = (s | s << 16) & 0x07e0f81f; |
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822 d = (d | d << 16) & 0x07e0f81f; |
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823 d += (s - d) * alpha >> 5; |
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824 d &= 0x07e0f81f; |
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825 *dstp++ = d | d >> 16; |
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826 s = *srcp++; |
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827 d = *dstp; |
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828 /* |
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829 * shift out the middle component (green) to |
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830 * the high 16 bits, and process all three RGB |
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831 * components at the same time. |
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832 */ |
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833 s = (s | s << 16) & 0x07e0f81f; |
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834 d = (d | d << 16) & 0x07e0f81f; |
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835 d += (s - d) * alpha >> 5; |
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836 d &= 0x07e0f81f; |
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837 *dstp++ = d | d >> 16; |
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838 },{ |
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839 movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
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840 movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
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841 |
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842 /* RED */ |
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843 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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844 pand_r2r(mm1 , mm5); /* src & MASKRED -> mm5 */ |
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845 psrlq_i2r(11, mm5); /* mm5 >> 11 -> mm5 [000r 000r 000r 000r] */ |
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846 |
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847 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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848 pand_r2r(mm1 , mm6); /* dst & MASKRED -> mm6 */ |
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849 psrlq_i2r(11, mm6); /* mm6 >> 11 -> mm6 [000r 000r 000r 000r] */ |
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850 |
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851 /* blend */ |
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852 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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853 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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854 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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855 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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856 psllq_i2r(11, mm6); /* mm6 << 11 -> mm6 */ |
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857 pand_r2r(mm1, mm6); /* mm6 & MASKRED -> mm6 */ |
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858 |
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859 movq_r2r(mm4, mm5); /* MASKGREEN -> mm5 */ |
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860 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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861 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKRED) -> mm3 */ |
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862 por_r2r(mm6, mm3); /* save new reds in dsts */ |
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863 |
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864 /* green */ |
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865 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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866 pand_r2r(mm4 , mm5); /* src & MASKGREEN -> mm5 */ |
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867 psrlq_i2r(5, mm5); /* mm5 >> 5 -> mm5 [000g 000g 000g 000g] */ |
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868 |
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869 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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870 pand_r2r(mm4 , mm6); /* dst & MASKGREEN -> mm6 */ |
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871 psrlq_i2r(5, mm6); /* mm6 >> 5 -> mm6 [000g 000g 000g 000g] */ |
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872 |
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873 /* blend */ |
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874 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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875 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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876 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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877 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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878 psllq_i2r(5, mm6); /* mm6 << 5 -> mm6 */ |
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879 pand_r2r(mm4, mm6); /* mm6 & MASKGREEN -> mm6 */ |
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880 |
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881 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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882 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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883 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKGREEN) -> mm3 */ |
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884 por_r2r(mm6, mm3); /* save new greens in dsts */ |
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885 |
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886 /* blue */ |
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887 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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888 pand_r2r(mm7 , mm5); /* src & MASKRED -> mm5[000b 000b 000b 000b] */ |
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889 |
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890 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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891 pand_r2r(mm7 , mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
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892 |
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893 /* blend */ |
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894 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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895 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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896 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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897 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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898 pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6 */ |
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899 |
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900 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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901 por_r2r(mm4, mm5); /* MASKGREEN | mm5 -> mm5 */ |
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902 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKBLUE) -> mm3 */ |
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903 por_r2r(mm6, mm3); /* save new blues in dsts */ |
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904 |
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905 movq_r2m(mm3, *dstp);/* mm3 -> 4 dst pixels */ |
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906 |
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907 srcp += 4; |
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908 dstp += 4; |
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909 }, width); |
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910 srcp += srcskip; |
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911 dstp += dstskip; |
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912 } |
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913 emms(); |
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914 } |
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915 } |
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916 |
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917 /* fast RGB555->RGB555 blending with surface alpha */ |
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918 static void Blit555to555SurfaceAlphaMMX(SDL_BlitInfo *info) |
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919 { |
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920 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
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921 if(alpha == 128) { |
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922 Blit16to16SurfaceAlpha128(info, 0xfbde); |
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923 } else { |
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924 int width = info->d_width; |
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925 int height = info->d_height; |
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926 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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927 int srcskip = info->s_skip >> 1; |
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928 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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929 int dstskip = info->d_skip >> 1; |
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930 Uint32 s, d; |
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931 Uint8 load[8]; |
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932 |
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933 alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
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934 *(Uint64 *)load = alpha; |
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935 alpha >>= 3; /* downscale alpha to 5 bits */ |
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936 |
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937 movq_m2r(*load, mm0); /* alpha(0000000A) -> mm0 */ |
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938 punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
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939 punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
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940 |
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941 /* Setup the 555 color channel masks */ |
720
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|
942 *(Uint64 *)load = 0x7C007C007C007C00ULL; |
689
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943 movq_m2r(*load, mm1); /* MASKRED -> mm1 */ |
720
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|
944 *(Uint64 *)load = 0x03E003E003E003E0ULL; |
689
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945 movq_m2r(*load, mm4); /* MASKGREEN -> mm4 */ |
720
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|
946 *(Uint64 *)load = 0x001F001F001F001FULL; |
689
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947 movq_m2r(*load, mm7); /* MASKBLUE -> mm7 */ |
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948 while(height--) { |
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949 DUFFS_LOOP_QUATRO2( |
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950 { |
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951 s = *srcp++; |
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952 d = *dstp; |
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953 /* |
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954 * shift out the middle component (green) to |
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955 * the high 16 bits, and process all three RGB |
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956 * components at the same time. |
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957 */ |
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958 s = (s | s << 16) & 0x03e07c1f; |
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959 d = (d | d << 16) & 0x03e07c1f; |
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960 d += (s - d) * alpha >> 5; |
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961 d &= 0x03e07c1f; |
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962 *dstp++ = d | d >> 16; |
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963 },{ |
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964 s = *srcp++; |
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965 d = *dstp; |
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966 /* |
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967 * shift out the middle component (green) to |
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968 * the high 16 bits, and process all three RGB |
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969 * components at the same time. |
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970 */ |
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971 s = (s | s << 16) & 0x03e07c1f; |
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972 d = (d | d << 16) & 0x03e07c1f; |
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973 d += (s - d) * alpha >> 5; |
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974 d &= 0x03e07c1f; |
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975 *dstp++ = d | d >> 16; |
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976 s = *srcp++; |
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977 d = *dstp; |
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978 /* |
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979 * shift out the middle component (green) to |
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980 * the high 16 bits, and process all three RGB |
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981 * components at the same time. |
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982 */ |
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983 s = (s | s << 16) & 0x03e07c1f; |
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984 d = (d | d << 16) & 0x03e07c1f; |
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985 d += (s - d) * alpha >> 5; |
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986 d &= 0x03e07c1f; |
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987 *dstp++ = d | d >> 16; |
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988 },{ |
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989 movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
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990 movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
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991 |
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992 /* RED */ |
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993 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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994 pand_r2r(mm1 , mm5); /* src & MASKRED -> mm5 */ |
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995 psrlq_i2r(10, mm5); /* mm5 >> 10 -> mm5 [000r 000r 000r 000r] */ |
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996 |
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997 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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998 pand_r2r(mm1 , mm6); /* dst & MASKRED -> mm6 */ |
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999 psrlq_i2r(10, mm6); /* mm6 >> 10 -> mm6 [000r 000r 000r 000r] */ |
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1000 |
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1001 /* blend */ |
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1002 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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1003 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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1004 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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1005 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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1006 psllq_i2r(10, mm6); /* mm6 << 10 -> mm6 */ |
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1007 pand_r2r(mm1, mm6); /* mm6 & MASKRED -> mm6 */ |
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1008 |
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1009 movq_r2r(mm4, mm5); /* MASKGREEN -> mm5 */ |
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1010 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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1011 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKRED) -> mm3 */ |
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1012 por_r2r(mm6, mm3); /* save new reds in dsts */ |
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1013 |
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1014 /* green */ |
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1015 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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1016 pand_r2r(mm4 , mm5); /* src & MASKGREEN -> mm5 */ |
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1017 psrlq_i2r(5, mm5); /* mm5 >> 5 -> mm5 [000g 000g 000g 000g] */ |
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1018 |
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1019 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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1020 pand_r2r(mm4 , mm6); /* dst & MASKGREEN -> mm6 */ |
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1021 psrlq_i2r(5, mm6); /* mm6 >> 5 -> mm6 [000g 000g 000g 000g] */ |
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1022 |
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1023 /* blend */ |
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1024 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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1025 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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1026 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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1027 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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1028 psllq_i2r(5, mm6); /* mm6 << 5 -> mm6 */ |
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1029 pand_r2r(mm4, mm6); /* mm6 & MASKGREEN -> mm6 */ |
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1030 |
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1031 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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1032 por_r2r(mm7, mm5); /* MASKBLUE | mm5 -> mm5 */ |
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1033 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKGREEN) -> mm3 */ |
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1034 por_r2r(mm6, mm3); /* save new greens in dsts */ |
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1035 |
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1036 /* blue */ |
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1037 movq_r2r(mm2, mm5); /* src -> mm5 */ |
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1038 pand_r2r(mm7 , mm5); /* src & MASKRED -> mm5[000b 000b 000b 000b] */ |
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1039 |
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1040 movq_r2r(mm3, mm6); /* dst -> mm6 */ |
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1041 pand_r2r(mm7 , mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
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1042 |
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1043 /* blend */ |
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1044 psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
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1045 pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
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1046 psrlw_i2r(8, mm5); /* mm5 >> 8 -> mm5 */ |
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1047 paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
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1048 pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6 */ |
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1049 |
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1050 movq_r2r(mm1, mm5); /* MASKRED -> mm5 */ |
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1051 por_r2r(mm4, mm5); /* MASKGREEN | mm5 -> mm5 */ |
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1052 pand_r2r(mm5, mm3); /* mm3 & mm5(!MASKBLUE) -> mm3 */ |
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1053 por_r2r(mm6, mm3); /* save new blues in dsts */ |
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1054 |
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1055 movq_r2m(mm3, *dstp);/* mm3 -> 4 dst pixels */ |
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1056 |
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1057 srcp += 4; |
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1058 dstp += 4; |
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1059 }, width); |
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1060 srcp += srcskip; |
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1061 dstp += dstskip; |
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1062 } |
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1063 emms(); |
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1064 } |
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1065 } |
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1066 #endif |
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1067 |
1
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1068 /* fast RGB565->RGB565 blending with surface alpha */ |
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|
1069 static void Blit565to565SurfaceAlpha(SDL_BlitInfo *info) |
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|
1070 { |
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1071 unsigned alpha = info->src->alpha; |
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1072 if(alpha == 128) { |
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|
1073 Blit16to16SurfaceAlpha128(info, 0xf7de); |
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1074 } else { |
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|
1075 int width = info->d_width; |
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|
1076 int height = info->d_height; |
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1077 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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1078 int srcskip = info->s_skip >> 1; |
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1079 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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1080 int dstskip = info->d_skip >> 1; |
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1081 alpha >>= 3; /* downscale alpha to 5 bits */ |
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1082 |
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1083 while(height--) { |
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1084 DUFFS_LOOP4({ |
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1085 Uint32 s = *srcp++; |
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1086 Uint32 d = *dstp; |
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1087 /* |
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1088 * shift out the middle component (green) to |
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1089 * the high 16 bits, and process all three RGB |
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1090 * components at the same time. |
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1091 */ |
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1092 s = (s | s << 16) & 0x07e0f81f; |
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1093 d = (d | d << 16) & 0x07e0f81f; |
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1094 d += (s - d) * alpha >> 5; |
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|
1095 d &= 0x07e0f81f; |
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|
1096 *dstp++ = d | d >> 16; |
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1097 }, width); |
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|
1098 srcp += srcskip; |
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|
1099 dstp += dstskip; |
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1100 } |
0 | 1101 } |
1102 } | |
1103 | |
1104 /* fast RGB555->RGB555 blending with surface alpha */ | |
1105 static void Blit555to555SurfaceAlpha(SDL_BlitInfo *info) | |
1106 { | |
1
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1107 unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
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1108 if(alpha == 128) { |
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1109 Blit16to16SurfaceAlpha128(info, 0xfbde); |
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1110 } else { |
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1111 int width = info->d_width; |
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1112 int height = info->d_height; |
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1113 Uint16 *srcp = (Uint16 *)info->s_pixels; |
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1114 int srcskip = info->s_skip >> 1; |
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1115 Uint16 *dstp = (Uint16 *)info->d_pixels; |
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1116 int dstskip = info->d_skip >> 1; |
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1117 alpha >>= 3; /* downscale alpha to 5 bits */ |
0 | 1118 |
1
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1119 while(height--) { |
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1120 DUFFS_LOOP4({ |
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1121 Uint32 s = *srcp++; |
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1122 Uint32 d = *dstp; |
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1123 /* |
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1124 * shift out the middle component (green) to |
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1125 * the high 16 bits, and process all three RGB |
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1126 * components at the same time. |
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1127 */ |
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1128 s = (s | s << 16) & 0x03e07c1f; |
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1129 d = (d | d << 16) & 0x03e07c1f; |
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1130 d += (s - d) * alpha >> 5; |
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1131 d &= 0x03e07c1f; |
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1132 *dstp++ = d | d >> 16; |
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1133 }, width); |
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1134 srcp += srcskip; |
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1135 dstp += dstskip; |
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1136 } |
0 | 1137 } |
1138 } | |
1139 | |
1140 /* fast ARGB8888->RGB565 blending with pixel alpha */ | |
1141 static void BlitARGBto565PixelAlpha(SDL_BlitInfo *info) | |
1142 { | |
1143 int width = info->d_width; | |
1144 int height = info->d_height; | |
1145 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
1146 int srcskip = info->s_skip >> 2; | |
1147 Uint16 *dstp = (Uint16 *)info->d_pixels; | |
1148 int dstskip = info->d_skip >> 1; | |
1149 | |
1150 while(height--) { | |
1151 DUFFS_LOOP4({ | |
1152 Uint32 s = *srcp; | |
1153 unsigned alpha = s >> 27; /* downscale alpha to 5 bits */ | |
1154 /* FIXME: Here we special-case opaque alpha since the | |
1155 compositioning used (>>8 instead of /255) doesn't handle | |
1156 it correctly. Also special-case alpha=0 for speed? | |
1157 Benchmark this! */ | |
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1158 if(alpha) { |
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1159 if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
0 | 1160 *dstp = (s >> 8 & 0xf800) + (s >> 5 & 0x7e0) |
1161 + (s >> 3 & 0x1f); | |
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1162 } else { |
0 | 1163 Uint32 d = *dstp; |
1164 /* | |
1165 * convert source and destination to G0RAB65565 | |
1166 * and blend all components at the same time | |
1167 */ | |
1168 s = ((s & 0xfc00) << 11) + (s >> 8 & 0xf800) | |
1169 + (s >> 3 & 0x1f); | |
1170 d = (d | d << 16) & 0x07e0f81f; | |
1171 d += (s - d) * alpha >> 5; | |
1172 d &= 0x07e0f81f; | |
1173 *dstp = d | d >> 16; | |
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1174 } |
0 | 1175 } |
1176 srcp++; | |
1177 dstp++; | |
1178 }, width); | |
1179 srcp += srcskip; | |
1180 dstp += dstskip; | |
1181 } | |
1182 } | |
1183 | |
1184 /* fast ARGB8888->RGB555 blending with pixel alpha */ | |
1185 static void BlitARGBto555PixelAlpha(SDL_BlitInfo *info) | |
1186 { | |
1187 int width = info->d_width; | |
1188 int height = info->d_height; | |
1189 Uint32 *srcp = (Uint32 *)info->s_pixels; | |
1190 int srcskip = info->s_skip >> 2; | |
1191 Uint16 *dstp = (Uint16 *)info->d_pixels; | |
1192 int dstskip = info->d_skip >> 1; | |
1193 | |
1194 while(height--) { | |
1195 DUFFS_LOOP4({ | |
1196 unsigned alpha; | |
1197 Uint32 s = *srcp; | |
1198 alpha = s >> 27; /* downscale alpha to 5 bits */ | |
1199 /* FIXME: Here we special-case opaque alpha since the | |
1200 compositioning used (>>8 instead of /255) doesn't handle | |
1201 it correctly. Also special-case alpha=0 for speed? | |
1202 Benchmark this! */ | |
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1203 if(alpha) { |
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1204 if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
0 | 1205 *dstp = (s >> 9 & 0x7c00) + (s >> 6 & 0x3e0) |
1206 + (s >> 3 & 0x1f); | |
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1207 } else { |
0 | 1208 Uint32 d = *dstp; |
1209 /* | |
1210 * convert source and destination to G0RAB65565 | |
1211 * and blend all components at the same time | |
1212 */ | |
1213 s = ((s & 0xf800) << 10) + (s >> 9 & 0x7c00) | |
1214 + (s >> 3 & 0x1f); | |
1215 d = (d | d << 16) & 0x03e07c1f; | |
1216 d += (s - d) * alpha >> 5; | |
1217 d &= 0x03e07c1f; | |
1218 *dstp = d | d >> 16; | |
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1219 } |
0 | 1220 } |
1221 srcp++; | |
1222 dstp++; | |
1223 }, width); | |
1224 srcp += srcskip; | |
1225 dstp += dstskip; | |
1226 } | |
1227 } | |
1228 | |
1229 /* General (slow) N->N blending with per-surface alpha */ | |
1230 static void BlitNtoNSurfaceAlpha(SDL_BlitInfo *info) | |
1231 { | |
1232 int width = info->d_width; | |
1233 int height = info->d_height; | |
1234 Uint8 *src = info->s_pixels; | |
1235 int srcskip = info->s_skip; | |
1236 Uint8 *dst = info->d_pixels; | |
1237 int dstskip = info->d_skip; | |
1238 SDL_PixelFormat *srcfmt = info->src; | |
1239 SDL_PixelFormat *dstfmt = info->dst; | |
1240 int srcbpp = srcfmt->BytesPerPixel; | |
1241 int dstbpp = dstfmt->BytesPerPixel; | |
1242 unsigned sA = srcfmt->alpha; | |
1243 unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; | |
1244 | |
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1245 if(sA) { |
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1246 while ( height-- ) { |
0 | 1247 DUFFS_LOOP4( |
1248 { | |
1249 Uint32 pixel; | |
1250 unsigned sR; | |
1251 unsigned sG; | |
1252 unsigned sB; | |
1253 unsigned dR; | |
1254 unsigned dG; | |
1255 unsigned dB; | |
1256 DISEMBLE_RGB(src, srcbpp, srcfmt, pixel, sR, sG, sB); | |
1257 DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); | |
1258 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); | |
1259 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); | |
1260 src += srcbpp; | |
1261 dst += dstbpp; | |
1262 }, | |
1263 width); | |
1264 src += srcskip; | |
1265 dst += dstskip; | |
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1266 } |
0 | 1267 } |
1268 } | |
1269 | |
1270 /* General (slow) colorkeyed N->N blending with per-surface alpha */ | |
1271 static void BlitNtoNSurfaceAlphaKey(SDL_BlitInfo *info) | |
1272 { | |
1273 int width = info->d_width; | |
1274 int height = info->d_height; | |
1275 Uint8 *src = info->s_pixels; | |
1276 int srcskip = info->s_skip; | |
1277 Uint8 *dst = info->d_pixels; | |
1278 int dstskip = info->d_skip; | |
1279 SDL_PixelFormat *srcfmt = info->src; | |
1280 SDL_PixelFormat *dstfmt = info->dst; | |
1281 Uint32 ckey = srcfmt->colorkey; | |
1282 int srcbpp = srcfmt->BytesPerPixel; | |
1283 int dstbpp = dstfmt->BytesPerPixel; | |
1284 unsigned sA = srcfmt->alpha; | |
1285 unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; | |
1286 | |
1287 while ( height-- ) { | |
1288 DUFFS_LOOP4( | |
1289 { | |
1290 Uint32 pixel; | |
1291 unsigned sR; | |
1292 unsigned sG; | |
1293 unsigned sB; | |
1294 unsigned dR; | |
1295 unsigned dG; | |
1296 unsigned dB; | |
1297 RETRIEVE_RGB_PIXEL(src, srcbpp, pixel); | |
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1298 if(sA && pixel != ckey) { |
0 | 1299 RGB_FROM_PIXEL(pixel, srcfmt, sR, sG, sB); |
1300 DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); | |
1301 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); | |
1302 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); | |
1303 } | |
1304 src += srcbpp; | |
1305 dst += dstbpp; | |
1306 }, | |
1307 width); | |
1308 src += srcskip; | |
1309 dst += dstskip; | |
1310 } | |
1311 } | |
1312 | |
1313 /* General (slow) N->N blending with pixel alpha */ | |
1314 static void BlitNtoNPixelAlpha(SDL_BlitInfo *info) | |
1315 { | |
1316 int width = info->d_width; | |
1317 int height = info->d_height; | |
1318 Uint8 *src = info->s_pixels; | |
1319 int srcskip = info->s_skip; | |
1320 Uint8 *dst = info->d_pixels; | |
1321 int dstskip = info->d_skip; | |
1322 SDL_PixelFormat *srcfmt = info->src; | |
1323 SDL_PixelFormat *dstfmt = info->dst; | |
1324 | |
1325 int srcbpp; | |
1326 int dstbpp; | |
1327 | |
1328 /* Set up some basic variables */ | |
1329 srcbpp = srcfmt->BytesPerPixel; | |
1330 dstbpp = dstfmt->BytesPerPixel; | |
1331 | |
1332 /* FIXME: for 8bpp source alpha, this doesn't get opaque values | |
1333 quite right. for <8bpp source alpha, it gets them very wrong | |
1334 (check all macros!) | |
1335 It is unclear whether there is a good general solution that doesn't | |
1336 need a branch (or a divide). */ | |
1337 while ( height-- ) { | |
1338 DUFFS_LOOP4( | |
1339 { | |
1340 Uint32 pixel; | |
1341 unsigned sR; | |
1342 unsigned sG; | |
1343 unsigned sB; | |
1344 unsigned dR; | |
1345 unsigned dG; | |
1346 unsigned dB; | |
1347 unsigned sA; | |
1348 unsigned dA; | |
1349 DISEMBLE_RGBA(src, srcbpp, srcfmt, pixel, sR, sG, sB, sA); | |
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1350 if(sA) { |
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1351 DISEMBLE_RGBA(dst, dstbpp, dstfmt, pixel, dR, dG, dB, dA); |
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1352 ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
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1353 ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
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1354 } |
0 | 1355 src += srcbpp; |
1356 dst += dstbpp; | |
1357 }, | |
1358 width); | |
1359 src += srcskip; | |
1360 dst += dstskip; | |
1361 } | |
1362 } | |
1363 | |
1364 | |
1365 SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index) | |
1366 { | |
1367 SDL_PixelFormat *sf = surface->format; | |
1368 SDL_PixelFormat *df = surface->map->dst->format; | |
1369 | |
1370 if(sf->Amask == 0) { | |
1371 if((surface->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) { | |
1372 if(df->BytesPerPixel == 1) | |
1373 return BlitNto1SurfaceAlphaKey; | |
1374 else | |
1375 return BlitNtoNSurfaceAlphaKey; | |
1376 } else { | |
1377 /* Per-surface alpha blits */ | |
1378 switch(df->BytesPerPixel) { | |
1379 case 1: | |
1380 return BlitNto1SurfaceAlpha; | |
1381 | |
1382 case 2: | |
1383 if(surface->map->identity) { | |
1384 if(df->Gmask == 0x7e0) | |
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1385 { |
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1386 #ifdef MMX_ASMBLIT |
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1387 if(SDL_HasMMX()) |
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1388 return Blit565to565SurfaceAlphaMMX; |
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1389 else |
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1390 #endif |
0 | 1391 return Blit565to565SurfaceAlpha; |
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1392 } |
0 | 1393 else if(df->Gmask == 0x3e0) |
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1394 { |
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1395 #ifdef MMX_ASMBLIT |
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1396 if(SDL_HasMMX()) |
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1397 return Blit555to555SurfaceAlphaMMX; |
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1398 else |
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1399 #endif |
0 | 1400 return Blit555to555SurfaceAlpha; |
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1401 } |
0 | 1402 } |
1403 return BlitNtoNSurfaceAlpha; | |
1404 | |
1405 case 4: | |
1406 if(sf->Rmask == df->Rmask | |
1407 && sf->Gmask == df->Gmask | |
1408 && sf->Bmask == df->Bmask | |
1409 && (sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff | |
1410 && sf->BytesPerPixel == 4) | |
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1411 { |
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1412 #ifdef MMX_ASMBLIT |
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1413 if(SDL_HasMMX()) |
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1414 return BlitRGBtoRGBSurfaceAlphaMMX; |
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1415 else |
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Sam Lantinga <slouken@libsdl.org>
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1416 #endif |
0 | 1417 return BlitRGBtoRGBSurfaceAlpha; |
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Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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1418 } |
0 | 1419 else |
1420 return BlitNtoNSurfaceAlpha; | |
1421 | |
1422 case 3: | |
1423 default: | |
1424 return BlitNtoNSurfaceAlpha; | |
1425 } | |
1426 } | |
1427 } else { | |
1428 /* Per-pixel alpha blits */ | |
1429 switch(df->BytesPerPixel) { | |
1430 case 1: | |
1431 return BlitNto1PixelAlpha; | |
1432 | |
1433 case 2: | |
1434 if(sf->BytesPerPixel == 4 && sf->Amask == 0xff000000 | |
1435 && sf->Gmask == 0xff00 | |
1436 && ((sf->Rmask == 0xff && df->Rmask == 0x1f) | |
1437 || (sf->Bmask == 0xff && df->Bmask == 0x1f))) { | |
1438 if(df->Gmask == 0x7e0) | |
1439 return BlitARGBto565PixelAlpha; | |
1440 else if(df->Gmask == 0x3e0) | |
1441 return BlitARGBto555PixelAlpha; | |
1442 } | |
1443 return BlitNtoNPixelAlpha; | |
1444 | |
1445 case 4: | |
1446 if(sf->Amask == 0xff000000 | |
1447 && sf->Rmask == df->Rmask | |
1448 && sf->Gmask == df->Gmask | |
1449 && sf->Bmask == df->Bmask | |
1450 && sf->BytesPerPixel == 4) | |
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Date: Tue, 19 Aug 2003 17:57:00 +0200
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1451 { |
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Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
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1452 #ifdef MMX_ASMBLIT |
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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1453 if(SDL_Has3DNow()) |
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Date: Tue, 19 Aug 2003 17:57:00 +0200
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1454 return BlitRGBtoRGBPixelAlphaMMX3DNOW; |
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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1455 else |
739
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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1456 if(SDL_HasMMX()) |
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Date: Tue, 19 Aug 2003 17:57:00 +0200
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1457 return BlitRGBtoRGBPixelAlphaMMX; |
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Date: Tue, 19 Aug 2003 17:57:00 +0200
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1458 else |
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Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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1459 #endif |
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Date: Tue, 19 Aug 2003 17:57:00 +0200
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1460 return BlitRGBtoRGBPixelAlpha; |
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
297
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1461 } |
0 | 1462 return BlitNtoNPixelAlpha; |
1463 | |
1464 case 3: | |
1465 default: | |
1466 return BlitNtoNPixelAlpha; | |
1467 } | |
1468 } | |
1469 } | |
1470 |