Mercurial > sdl-ios-xcode
annotate src/video/SDL_blit.h @ 1348:40d0975c1769
Date: Mon, 6 Feb 2006 11:41:04 -0500
From: "mystml@adinet.com.uy"
Subject: [SDL] ALT-F4 using DirectX
My game isn't getting SDL_QUIT when I press ALT-F4 using the DirectX
driver; it does get SDL_QUIT when I press the red X in the window.
I tracked this down to DX5_HandleMessage() in SDL_dx5events.c;
WM_SYSKEYDOWN is being trapped and ignored which causes Windows not to post
a WM_CLOSE, hence no SDL_QUIT is being generated.
The relevant code is this :
/* The keyboard is handled via DirectInput */
case WM_SYSKEYUP:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_KEYDOWN: {
/* Ignore windows keyboard messages */;
}
return(0);
If I comment the WM_SYSKEYDOWN case, it falls through DefWindowProc() and
ALT-F4 starts working again.
I'm not sure about the best way to fix this. One option is handling ALT-F4
as a particular case somehow, but doesn't sound good. Another option would
be to handle WM_SYSKEYDOWN separately and breaking instead of returning 0,
so processing falls through and goes to DefWindowProc which does The Right
Thing (TM). This seems to be the minimal change that makes ALT-F4 work and
normal keyboard input continues to work.
Does this sound reasonable? Am I overlooking anything? Do I submit a patch?
--Gabriel
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 08 Feb 2006 17:19:43 +0000 |
| parents | c9b51268668f |
| children | d910939febfa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifndef _SDL_blit_h | |
| 24 #define _SDL_blit_h | |
| 25 | |
| 26 #include "SDL_endian.h" | |
| 27 | |
| 28 /* The structure passed to the low level blit functions */ | |
| 29 typedef struct { | |
| 30 Uint8 *s_pixels; | |
| 31 int s_width; | |
| 32 int s_height; | |
| 33 int s_skip; | |
| 34 Uint8 *d_pixels; | |
| 35 int d_width; | |
| 36 int d_height; | |
| 37 int d_skip; | |
| 38 void *aux_data; | |
| 39 SDL_PixelFormat *src; | |
| 40 Uint8 *table; | |
| 41 SDL_PixelFormat *dst; | |
| 42 } SDL_BlitInfo; | |
| 43 | |
| 44 /* The type definition for the low level blit functions */ | |
| 45 typedef void (*SDL_loblit)(SDL_BlitInfo *info); | |
| 46 | |
| 47 /* This is the private info structure for software accelerated blits */ | |
| 48 struct private_swaccel { | |
| 49 SDL_loblit blit; | |
| 50 void *aux_data; | |
| 51 }; | |
| 52 | |
| 53 /* Blit mapping definition */ | |
| 54 typedef struct SDL_BlitMap { | |
| 55 SDL_Surface *dst; | |
| 56 int identity; | |
| 57 Uint8 *table; | |
| 58 SDL_blit hw_blit; | |
| 59 SDL_blit sw_blit; | |
| 60 struct private_hwaccel *hw_data; | |
| 61 struct private_swaccel *sw_data; | |
| 62 | |
| 63 /* the version count matches the destination; mismatch indicates | |
| 64 an invalid mapping */ | |
| 65 unsigned int format_version; | |
| 66 } SDL_BlitMap; | |
| 67 | |
| 68 | |
| 69 /* Functions found in SDL_blit.c */ | |
| 70 extern int SDL_CalculateBlit(SDL_Surface *surface); | |
| 71 | |
| 72 /* Functions found in SDL_blit_{0,1,N,A}.c */ | |
| 73 extern SDL_loblit SDL_CalculateBlit0(SDL_Surface *surface, int complex); | |
| 74 extern SDL_loblit SDL_CalculateBlit1(SDL_Surface *surface, int complex); | |
| 75 extern SDL_loblit SDL_CalculateBlitN(SDL_Surface *surface, int complex); | |
| 76 extern SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int complex); | |
| 77 | |
| 78 /* | |
| 79 * Useful macros for blitting routines | |
| 80 */ | |
| 81 | |
| 82 #define FORMAT_EQUAL(A, B) \ | |
| 83 ((A)->BitsPerPixel == (B)->BitsPerPixel \ | |
| 84 && ((A)->Rmask == (B)->Rmask) && ((A)->Amask == (B)->Amask)) | |
| 85 | |
| 86 /* Load pixel of the specified format from a buffer and get its R-G-B values */ | |
| 87 /* FIXME: rescale values to 0..255 here? */ | |
|
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88 #define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \ |
| 0 | 89 { \ |
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90 r = (((Pixel&fmt->Rmask)>>fmt->Rshift)<<fmt->Rloss); \ |
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91 g = (((Pixel&fmt->Gmask)>>fmt->Gshift)<<fmt->Gloss); \ |
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92 b = (((Pixel&fmt->Bmask)>>fmt->Bshift)<<fmt->Bloss); \ |
| 0 | 93 } |
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94 #define RGB_FROM_RGB565(Pixel, r, g, b) \ |
| 0 | 95 { \ |
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96 r = (((Pixel&0xF800)>>11)<<3); \ |
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97 g = (((Pixel&0x07E0)>>5)<<2); \ |
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98 b = ((Pixel&0x001F)<<3); \ |
| 0 | 99 } |
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100 #define RGB_FROM_RGB555(Pixel, r, g, b) \ |
| 0 | 101 { \ |
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102 r = (((Pixel&0x7C00)>>10)<<3); \ |
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103 g = (((Pixel&0x03E0)>>5)<<3); \ |
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104 b = ((Pixel&0x001F)<<3); \ |
| 0 | 105 } |
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106 #define RGB_FROM_RGB888(Pixel, r, g, b) \ |
| 0 | 107 { \ |
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108 r = ((Pixel&0xFF0000)>>16); \ |
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109 g = ((Pixel&0xFF00)>>8); \ |
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110 b = (Pixel&0xFF); \ |
| 0 | 111 } |
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112 #define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \ |
| 0 | 113 do { \ |
| 114 switch (bpp) { \ | |
| 115 case 2: \ | |
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116 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 117 break; \ |
| 118 \ | |
| 119 case 3: { \ | |
| 120 Uint8 *B = (Uint8 *)(buf); \ | |
| 121 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
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122 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \ |
| 0 | 123 } else { \ |
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124 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \ |
| 0 | 125 } \ |
| 126 } \ | |
| 127 break; \ | |
| 128 \ | |
| 129 case 4: \ | |
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130 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 131 break; \ |
| 132 \ | |
| 133 default: \ | |
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134 Pixel = 0; /* appease gcc */ \ |
| 0 | 135 break; \ |
| 136 } \ | |
| 137 } while(0) | |
| 138 | |
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139 #define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \ |
| 0 | 140 do { \ |
| 141 switch (bpp) { \ | |
| 142 case 2: \ | |
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143 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 144 break; \ |
| 145 \ | |
| 146 case 3: { \ | |
| 147 Uint8 *B = (Uint8 *)buf; \ | |
| 148 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
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149 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \ |
| 0 | 150 } else { \ |
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151 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \ |
| 0 | 152 } \ |
| 153 } \ | |
| 154 break; \ | |
| 155 \ | |
| 156 case 4: \ | |
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157 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 158 break; \ |
| 159 \ | |
| 160 default: \ | |
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161 Pixel = 0; /* prevent gcc from complaining */ \ |
| 0 | 162 break; \ |
| 163 } \ | |
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164 RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \ |
| 0 | 165 } while(0) |
| 166 | |
| 167 /* Assemble R-G-B values into a specified pixel format and store them */ | |
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168 #define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \ |
| 0 | 169 { \ |
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170 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \ |
| 0 | 171 ((g>>fmt->Gloss)<<fmt->Gshift)| \ |
| 172 ((b>>fmt->Bloss)<<fmt->Bshift); \ | |
| 173 } | |
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174 #define RGB565_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 175 { \ |
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176 Pixel = ((r>>3)<<11)|((g>>2)<<5)|(b>>3); \ |
| 0 | 177 } |
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178 #define RGB555_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 179 { \ |
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180 Pixel = ((r>>3)<<10)|((g>>3)<<5)|(b>>3); \ |
| 0 | 181 } |
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182 #define RGB888_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 183 { \ |
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184 Pixel = (r<<16)|(g<<8)|b; \ |
| 0 | 185 } |
| 186 #define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \ | |
| 187 { \ | |
| 188 switch (bpp) { \ | |
| 189 case 2: { \ | |
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190 Uint16 Pixel; \ |
| 0 | 191 \ |
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192 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \ |
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193 *((Uint16 *)(buf)) = Pixel; \ |
| 0 | 194 } \ |
| 195 break; \ | |
| 196 \ | |
| 197 case 3: { \ | |
| 198 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 199 *((buf)+fmt->Rshift/8) = r; \ | |
| 200 *((buf)+fmt->Gshift/8) = g; \ | |
| 201 *((buf)+fmt->Bshift/8) = b; \ | |
| 202 } else { \ | |
| 203 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 204 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 205 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 206 } \ | |
| 207 } \ | |
| 208 break; \ | |
| 209 \ | |
| 210 case 4: { \ | |
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211 Uint32 Pixel; \ |
| 0 | 212 \ |
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213 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \ |
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214 *((Uint32 *)(buf)) = Pixel; \ |
| 0 | 215 } \ |
| 216 break; \ | |
| 217 } \ | |
| 218 } | |
| 219 #define ASSEMBLE_RGB_AMASK(buf, bpp, fmt, r, g, b, Amask) \ | |
| 220 { \ | |
| 221 switch (bpp) { \ | |
| 222 case 2: { \ | |
| 223 Uint16 *bufp; \ | |
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224 Uint16 Pixel; \ |
| 0 | 225 \ |
| 226 bufp = (Uint16 *)buf; \ | |
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227 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \ |
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228 *bufp = Pixel | (*bufp & Amask); \ |
| 0 | 229 } \ |
| 230 break; \ | |
| 231 \ | |
| 232 case 3: { \ | |
| 233 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 234 *((buf)+fmt->Rshift/8) = r; \ | |
| 235 *((buf)+fmt->Gshift/8) = g; \ | |
| 236 *((buf)+fmt->Bshift/8) = b; \ | |
| 237 } else { \ | |
| 238 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 239 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 240 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 241 } \ | |
| 242 } \ | |
| 243 break; \ | |
| 244 \ | |
| 245 case 4: { \ | |
| 246 Uint32 *bufp; \ | |
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247 Uint32 Pixel; \ |
| 0 | 248 \ |
| 249 bufp = (Uint32 *)buf; \ | |
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250 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \ |
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251 *bufp = Pixel | (*bufp & Amask); \ |
| 0 | 252 } \ |
| 253 break; \ | |
| 254 } \ | |
| 255 } | |
| 256 | |
| 257 /* FIXME: Should we rescale alpha into 0..255 here? */ | |
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258 #define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \ |
| 0 | 259 { \ |
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260 r = ((Pixel&fmt->Rmask)>>fmt->Rshift)<<fmt->Rloss; \ |
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261 g = ((Pixel&fmt->Gmask)>>fmt->Gshift)<<fmt->Gloss; \ |
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262 b = ((Pixel&fmt->Bmask)>>fmt->Bshift)<<fmt->Bloss; \ |
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263 a = ((Pixel&fmt->Amask)>>fmt->Ashift)<<fmt->Aloss; \ |
| 0 | 264 } |
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265 #define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \ |
| 0 | 266 { \ |
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267 r = (Pixel&fmt->Rmask)>>fmt->Rshift; \ |
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268 g = (Pixel&fmt->Gmask)>>fmt->Gshift; \ |
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269 b = (Pixel&fmt->Bmask)>>fmt->Bshift; \ |
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270 a = (Pixel&fmt->Amask)>>fmt->Ashift; \ |
| 0 | 271 } |
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272 #define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \ |
| 0 | 273 { \ |
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274 r = (Pixel>>24); \ |
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275 g = ((Pixel>>16)&0xFF); \ |
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276 b = ((Pixel>>8)&0xFF); \ |
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277 a = (Pixel&0xFF); \ |
| 0 | 278 } |
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279 #define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \ |
| 0 | 280 { \ |
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281 r = ((Pixel>>16)&0xFF); \ |
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282 g = ((Pixel>>8)&0xFF); \ |
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283 b = (Pixel&0xFF); \ |
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284 a = (Pixel>>24); \ |
| 0 | 285 } |
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286 #define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \ |
| 0 | 287 { \ |
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288 r = (Pixel&0xFF); \ |
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289 g = ((Pixel>>8)&0xFF); \ |
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290 b = ((Pixel>>16)&0xFF); \ |
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291 a = (Pixel>>24); \ |
| 0 | 292 } |
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293 #define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \ |
| 0 | 294 do { \ |
| 295 switch (bpp) { \ | |
| 296 case 2: \ | |
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297 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 298 break; \ |
| 299 \ | |
| 300 case 3: {/* FIXME: broken code (no alpha) */ \ | |
| 301 Uint8 *b = (Uint8 *)buf; \ | |
| 302 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
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303 Pixel = b[0] + (b[1] << 8) + (b[2] << 16); \ |
| 0 | 304 } else { \ |
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305 Pixel = (b[0] << 16) + (b[1] << 8) + b[2]; \ |
| 0 | 306 } \ |
| 307 } \ | |
| 308 break; \ | |
| 309 \ | |
| 310 case 4: \ | |
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311 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 312 break; \ |
| 313 \ | |
| 314 default: \ | |
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315 Pixel = 0; /* stop gcc complaints */ \ |
| 0 | 316 break; \ |
| 317 } \ | |
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318 RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \ |
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319 Pixel &= ~fmt->Amask; \ |
| 0 | 320 } while(0) |
| 321 | |
| 322 /* FIXME: this isn't correct, especially for Alpha (maximum != 255) */ | |
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323 #define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \ |
| 0 | 324 { \ |
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325 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \ |
| 0 | 326 ((g>>fmt->Gloss)<<fmt->Gshift)| \ |
| 327 ((b>>fmt->Bloss)<<fmt->Bshift)| \ | |
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328 ((a>>fmt->Aloss)<<fmt->Ashift); \ |
| 0 | 329 } |
| 330 #define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \ | |
| 331 { \ | |
| 332 switch (bpp) { \ | |
| 333 case 2: { \ | |
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334 Uint16 Pixel; \ |
| 0 | 335 \ |
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336 PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \ |
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337 *((Uint16 *)(buf)) = Pixel; \ |
| 0 | 338 } \ |
| 339 break; \ | |
| 340 \ | |
| 341 case 3: { /* FIXME: broken code (no alpha) */ \ | |
| 342 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 343 *((buf)+fmt->Rshift/8) = r; \ | |
| 344 *((buf)+fmt->Gshift/8) = g; \ | |
| 345 *((buf)+fmt->Bshift/8) = b; \ | |
| 346 } else { \ | |
| 347 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 348 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 349 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 350 } \ | |
| 351 } \ | |
| 352 break; \ | |
| 353 \ | |
| 354 case 4: { \ | |
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355 Uint32 Pixel; \ |
| 0 | 356 \ |
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357 PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \ |
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358 *((Uint32 *)(buf)) = Pixel; \ |
| 0 | 359 } \ |
| 360 break; \ | |
| 361 } \ | |
| 362 } | |
| 363 | |
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364 /* Blend the RGB values of two Pixels based on a source alpha value */ |
| 0 | 365 #define ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB) \ |
| 366 do { \ | |
| 367 dR = (((sR-dR)*(A))>>8)+dR; \ | |
| 368 dG = (((sG-dG)*(A))>>8)+dG; \ | |
| 369 dB = (((sB-dB)*(A))>>8)+dB; \ | |
| 370 } while(0) | |
| 371 | |
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372 /* Blend the RGB values of two Pixels based on a source alpha value */ |
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373 #define ACCURATE_ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB) \ |
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374 do { \ |
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375 unsigned tR, tG, tB, tA; \ |
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376 tA = 255 - sA; \ |
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377 tR = 1 + (sR * sA) + (dR * tA); \ |
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378 dR = (tR + (tR >> 8)) >> 8; \ |
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379 tG = 1 + (sG * sA) + (dG * tA); \ |
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380 dG = (tG + (tG >> 8)) >> 8; \ |
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381 tB = 1 + (sB * sA) + (dB * tA); \ |
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382 dB = (tB + (tB >> 8)) >> 8; \ |
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383 } while(0) |
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384 |
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385 |
| 0 | 386 /* This is a very useful loop for optimizing blitters */ |
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387 #if defined(_MSC_VER) && (_MSC_VER == 1300) |
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388 /* There's a bug in the Visual C++ 7 optimizer when compiling this code */ |
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389 #else |
| 0 | 390 #define USE_DUFFS_LOOP |
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391 #endif |
| 0 | 392 #ifdef USE_DUFFS_LOOP |
| 393 | |
| 394 /* 8-times unrolled loop */ | |
| 395 #define DUFFS_LOOP8(pixel_copy_increment, width) \ | |
| 396 { int n = (width+7)/8; \ | |
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397 switch (width & 7) { \ |
| 0 | 398 case 0: do { pixel_copy_increment; \ |
| 399 case 7: pixel_copy_increment; \ | |
| 400 case 6: pixel_copy_increment; \ | |
| 401 case 5: pixel_copy_increment; \ | |
| 402 case 4: pixel_copy_increment; \ | |
| 403 case 3: pixel_copy_increment; \ | |
| 404 case 2: pixel_copy_increment; \ | |
| 405 case 1: pixel_copy_increment; \ | |
| 406 } while ( --n > 0 ); \ | |
| 407 } \ | |
| 408 } | |
| 409 | |
| 410 /* 4-times unrolled loop */ | |
| 411 #define DUFFS_LOOP4(pixel_copy_increment, width) \ | |
| 412 { int n = (width+3)/4; \ | |
|
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413 switch (width & 3) { \ |
| 0 | 414 case 0: do { pixel_copy_increment; \ |
| 415 case 3: pixel_copy_increment; \ | |
| 416 case 2: pixel_copy_increment; \ | |
| 417 case 1: pixel_copy_increment; \ | |
| 418 } while ( --n > 0 ); \ | |
| 419 } \ | |
| 420 } | |
| 421 | |
|
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422 /* 2 - times unrolled loop */ |
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423 #define DUFFS_LOOP_DOUBLE2(pixel_copy_increment, \ |
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424 double_pixel_copy_increment, width) \ |
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425 { int n, w = width; \ |
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426 if( w & 1 ) { \ |
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427 pixel_copy_increment; \ |
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428 w--; \ |
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429 } \ |
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430 if ( w > 0 ) { \ |
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431 n = ( w + 2) / 4; \ |
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432 switch( w & 2 ) { \ |
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433 case 0: do { double_pixel_copy_increment; \ |
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434 case 2: double_pixel_copy_increment; \ |
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435 } while ( --n > 0 ); \ |
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436 } \ |
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437 } \ |
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438 } |
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439 |
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440 /* 2 - times unrolled loop 4 pixels */ |
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441 #define DUFFS_LOOP_QUATRO2(pixel_copy_increment, \ |
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442 double_pixel_copy_increment, \ |
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443 quatro_pixel_copy_increment, width) \ |
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444 { int n, w = width; \ |
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445 if(w & 1) { \ |
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Sam Lantinga <slouken@libsdl.org>
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446 pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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447 w--; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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448 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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449 if(w & 2) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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450 double_pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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451 w -= 2; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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452 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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453 if ( w > 0 ) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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454 n = ( w + 7 ) / 8; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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455 switch( w & 4 ) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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456 case 0: do { quatro_pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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457 case 4: quatro_pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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458 } while ( --n > 0 ); \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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459 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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460 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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461 } |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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462 |
| 0 | 463 /* Use the 8-times version of the loop by default */ |
| 464 #define DUFFS_LOOP(pixel_copy_increment, width) \ | |
| 465 DUFFS_LOOP8(pixel_copy_increment, width) | |
| 466 | |
| 467 #else | |
| 468 | |
| 469 /* Don't use Duff's device to unroll loops */ | |
|
689
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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470 #define DUFFS_LOOP_DOUBLE2(pixel_copy_increment, \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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471 double_pixel_copy_increment, width) \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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472 { int n = width; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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473 if( n & 1 ) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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474 pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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475 n--; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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476 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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477 n=n>>1; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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478 for(; n > 0; --n) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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479 double_pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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480 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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481 } |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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482 |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff
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483 /* Don't use Duff's device to unroll loops */ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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484 #define DUFFS_LOOP_QUATRO2(pixel_copy_increment, \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
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485 double_pixel_copy_increment, \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
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486 quatro_pixel_copy_increment, width) \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff
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487 { int n = width; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
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488 if(n & 1) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
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489 pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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553
diff
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490 n--; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff
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491 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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492 if(n & 2) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
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493 double_pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
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494 n -= 2; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
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495 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
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496 n=n>>2; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff
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497 for(; n > 0; --n) { \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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553
diff
changeset
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498 quatro_pixel_copy_increment; \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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553
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499 } \ |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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500 } |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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501 |
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5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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502 /* Don't use Duff's device to unroll loops */ |
| 0 | 503 #define DUFFS_LOOP(pixel_copy_increment, width) \ |
| 504 { int n; \ | |
| 505 for ( n=width; n > 0; --n ) { \ | |
| 506 pixel_copy_increment; \ | |
| 507 } \ | |
| 508 } | |
| 509 #define DUFFS_LOOP8(pixel_copy_increment, width) \ | |
| 510 DUFFS_LOOP(pixel_copy_increment, width) | |
| 511 #define DUFFS_LOOP4(pixel_copy_increment, width) \ | |
| 512 DUFFS_LOOP(pixel_copy_increment, width) | |
| 513 | |
| 514 #endif /* USE_DUFFS_LOOP */ | |
| 515 | |
| 516 /* Prevent Visual C++ 6.0 from printing out stupid warnings */ | |
| 517 #if defined(_MSC_VER) && (_MSC_VER >= 600) | |
| 518 #pragma warning(disable: 4550) | |
| 519 #endif | |
| 520 | |
| 521 #endif /* _SDL_blit_h */ |