Mercurial > sdl-ios-xcode
annotate docs/html/sdlsurface.html @ 310:c97c1d3b3b5c
Blit bug fix from John Popplewell
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 20 Mar 2002 02:21:46 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_Surface</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Video" | |
| 14 HREF="video.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_PixelFormat" | |
| 17 HREF="sdlpixelformat.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_VideoInfo" | |
| 20 HREF="sdlvideoinfo.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="REFENTRY" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="sdlpixelformat.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 ></TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="sdlvideoinfo.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><H1 | |
| 69 ><A | |
| 70 NAME="SDLSURFACE" | |
| 71 >SDL_Surface</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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76 NAME="AEN2879" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_Surface -- Graphical Surface Structure</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSECT1" | |
| 83 ><A | |
|
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84 NAME="AEN2882" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Structure Definition</H2 | |
| 88 ><PRE | |
| 89 CLASS="PROGRAMLISTING" | |
| 90 >typedef struct SDL_Surface { | |
| 91 Uint32 flags; /* Read-only */ | |
| 92 SDL_PixelFormat *format; /* Read-only */ | |
| 93 int w, h; /* Read-only */ | |
| 94 Uint16 pitch; /* Read-only */ | |
| 95 void *pixels; /* Read-write */ | |
| 96 | |
| 97 /* clipping information */ | |
| 98 SDL_Rect clip_rect; /* Read-only */ | |
| 99 | |
| 100 /* Reference count -- used when freeing surface */ | |
| 101 int refcount; /* Read-mostly */ | |
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102 |
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103 /* This structure also contains private fields not shown here */ |
| 0 | 104 } SDL_Surface;</PRE |
| 105 ></DIV | |
| 106 ><DIV | |
| 107 CLASS="REFSECT1" | |
| 108 ><A | |
|
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109 NAME="AEN2885" |
| 0 | 110 ></A |
| 111 ><H2 | |
| 112 >Structure Data</H2 | |
| 113 ><DIV | |
| 114 CLASS="INFORMALTABLE" | |
| 115 ><A | |
|
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116 NAME="AEN2887" |
| 0 | 117 ></A |
| 118 ><P | |
| 119 ></P | |
| 120 ><TABLE | |
| 121 BORDER="0" | |
| 122 CLASS="CALSTABLE" | |
| 123 ><TBODY | |
| 124 ><TR | |
| 125 ><TD | |
| 126 ALIGN="LEFT" | |
| 127 VALIGN="TOP" | |
| 128 ><TT | |
| 129 CLASS="STRUCTFIELD" | |
| 130 ><I | |
| 131 >flags</I | |
| 132 ></TT | |
| 133 ></TD | |
| 134 ><TD | |
| 135 ALIGN="LEFT" | |
| 136 VALIGN="TOP" | |
| 137 >Surface flags</TD | |
| 138 ></TR | |
| 139 ><TR | |
| 140 ><TD | |
| 141 ALIGN="LEFT" | |
| 142 VALIGN="TOP" | |
| 143 ><TT | |
| 144 CLASS="STRUCTFIELD" | |
| 145 ><I | |
| 146 >format</I | |
| 147 ></TT | |
| 148 ></TD | |
| 149 ><TD | |
| 150 ALIGN="LEFT" | |
| 151 VALIGN="TOP" | |
| 152 >Pixel <A | |
| 153 HREF="sdlpixelformat.html" | |
| 154 >format</A | |
| 155 ></TD | |
| 156 ></TR | |
| 157 ><TR | |
| 158 ><TD | |
| 159 ALIGN="LEFT" | |
| 160 VALIGN="TOP" | |
| 161 ><TT | |
| 162 CLASS="STRUCTFIELD" | |
| 163 ><I | |
| 164 >w, h</I | |
| 165 ></TT | |
| 166 ></TD | |
| 167 ><TD | |
| 168 ALIGN="LEFT" | |
| 169 VALIGN="TOP" | |
| 170 >Width and height of the surface</TD | |
| 171 ></TR | |
| 172 ><TR | |
| 173 ><TD | |
| 174 ALIGN="LEFT" | |
| 175 VALIGN="TOP" | |
| 176 ><TT | |
| 177 CLASS="STRUCTFIELD" | |
| 178 ><I | |
| 179 >pitch</I | |
| 180 ></TT | |
| 181 ></TD | |
| 182 ><TD | |
| 183 ALIGN="LEFT" | |
| 184 VALIGN="TOP" | |
| 185 >Length of a surface scanline in bytes</TD | |
| 186 ></TR | |
| 187 ><TR | |
| 188 ><TD | |
| 189 ALIGN="LEFT" | |
| 190 VALIGN="TOP" | |
| 191 ><TT | |
| 192 CLASS="STRUCTFIELD" | |
| 193 ><I | |
| 194 >pixels</I | |
| 195 ></TT | |
| 196 ></TD | |
| 197 ><TD | |
| 198 ALIGN="LEFT" | |
| 199 VALIGN="TOP" | |
| 200 >Pointer to the actual pixel data</TD | |
| 201 ></TR | |
| 202 ><TR | |
| 203 ><TD | |
| 204 ALIGN="LEFT" | |
| 205 VALIGN="TOP" | |
| 206 ><TT | |
| 207 CLASS="STRUCTFIELD" | |
| 208 ><I | |
| 209 >clip_rect</I | |
| 210 ></TT | |
| 211 ></TD | |
| 212 ><TD | |
| 213 ALIGN="LEFT" | |
| 214 VALIGN="TOP" | |
| 215 >surface clip <A | |
| 216 HREF="sdlrect.html" | |
| 217 >rectangle</A | |
| 218 ></TD | |
| 219 ></TR | |
| 220 ></TBODY | |
| 221 ></TABLE | |
| 222 ><P | |
| 223 ></P | |
| 224 ></DIV | |
| 225 ></DIV | |
| 226 ><DIV | |
| 227 CLASS="REFSECT1" | |
| 228 ><A | |
|
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229 NAME="AEN2916" |
| 0 | 230 ></A |
| 231 ><H2 | |
| 232 >Description</H2 | |
| 233 ><P | |
| 234 ><SPAN | |
| 235 CLASS="STRUCTNAME" | |
| 236 >SDL_Surface</SPAN | |
| 237 >'s represent areas of "graphical" | |
| 238 memory, memory that can be drawn to. The video framebuffer is returned | |
| 239 as a <SPAN | |
| 240 CLASS="STRUCTNAME" | |
| 241 >SDL_Surface</SPAN | |
| 242 > by | |
| 243 <A | |
| 244 HREF="sdlsetvideomode.html" | |
| 245 ><TT | |
| 246 CLASS="FUNCTION" | |
| 247 >SDL_SetVideoMode</TT | |
| 248 ></A | |
| 249 > | |
| 250 and <A | |
| 251 HREF="sdlgetvideosurface.html" | |
| 252 ><TT | |
| 253 CLASS="FUNCTION" | |
| 254 >SDL_GetVideoSurface</TT | |
| 255 ></A | |
| 256 >. | |
| 257 Most of the fields should be pretty obvious. | |
| 258 <TT | |
| 259 CLASS="STRUCTFIELD" | |
| 260 ><I | |
| 261 >w</I | |
| 262 ></TT | |
| 263 > and <TT | |
| 264 CLASS="STRUCTFIELD" | |
| 265 ><I | |
| 266 >h</I | |
| 267 ></TT | |
| 268 > are the | |
| 269 width and height of the surface in pixels. | |
| 270 <TT | |
| 271 CLASS="STRUCTFIELD" | |
| 272 ><I | |
| 273 >pixels</I | |
| 274 ></TT | |
| 275 > is a pointer to the actual pixel data, | |
| 276 the surface should be <A | |
| 277 HREF="sdllocksurface.html" | |
| 278 >locked</A | |
| 279 > | |
| 280 before accessing this field. The <TT | |
| 281 CLASS="STRUCTFIELD" | |
| 282 ><I | |
| 283 >clip_rect</I | |
| 284 ></TT | |
| 285 > field | |
| 286 is the clipping rectangle as set by | |
| 287 <A | |
| 288 HREF="sdlsetcliprect.html" | |
| 289 ><TT | |
| 290 CLASS="FUNCTION" | |
| 291 >SDL_SetClipRect</TT | |
| 292 ></A | |
| 293 >.</P | |
| 294 ><P | |
| 295 >The following are supported in the | |
| 296 <TT | |
| 297 CLASS="STRUCTFIELD" | |
| 298 ><I | |
| 299 >flags</I | |
| 300 ></TT | |
| 301 > field.</P | |
| 302 ><DIV | |
| 303 CLASS="INFORMALTABLE" | |
| 304 ><A | |
|
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305 NAME="AEN2934" |
| 0 | 306 ></A |
| 307 ><P | |
| 308 ></P | |
| 309 ><TABLE | |
| 310 BORDER="1" | |
| 311 CLASS="CALSTABLE" | |
| 312 ><TBODY | |
| 313 ><TR | |
| 314 ><TD | |
| 315 ALIGN="LEFT" | |
| 316 VALIGN="TOP" | |
| 317 ><TT | |
| 318 CLASS="LITERAL" | |
| 319 >SDL_SWSURFACE</TT | |
| 320 ></TD | |
| 321 ><TD | |
| 322 ALIGN="LEFT" | |
| 323 VALIGN="TOP" | |
| 324 >Surface is stored in system memory</TD | |
| 325 ></TR | |
| 326 ><TR | |
| 327 ><TD | |
| 328 ALIGN="LEFT" | |
| 329 VALIGN="TOP" | |
| 330 ><TT | |
| 331 CLASS="LITERAL" | |
| 332 >SDL_HWSURFACE</TT | |
| 333 ></TD | |
| 334 ><TD | |
| 335 ALIGN="LEFT" | |
| 336 VALIGN="TOP" | |
| 337 >Surface is stored in video memory</TD | |
| 338 ></TR | |
| 339 ><TR | |
| 340 ><TD | |
| 341 ALIGN="LEFT" | |
| 342 VALIGN="TOP" | |
| 343 ><TT | |
| 344 CLASS="LITERAL" | |
| 345 >SDL_ASYNCBLIT</TT | |
| 346 ></TD | |
| 347 ><TD | |
| 348 ALIGN="LEFT" | |
| 349 VALIGN="TOP" | |
| 350 >Surface uses asynchronous blits if possible</TD | |
| 351 ></TR | |
| 352 ><TR | |
| 353 ><TD | |
| 354 ALIGN="LEFT" | |
| 355 VALIGN="TOP" | |
| 356 ><TT | |
| 357 CLASS="LITERAL" | |
| 358 >SDL_ANYFORMAT</TT | |
| 359 ></TD | |
| 360 ><TD | |
| 361 ALIGN="LEFT" | |
| 362 VALIGN="TOP" | |
| 363 >Allows any pixel-format (Display surface)</TD | |
| 364 ></TR | |
| 365 ><TR | |
| 366 ><TD | |
| 367 ALIGN="LEFT" | |
| 368 VALIGN="TOP" | |
| 369 ><TT | |
| 370 CLASS="LITERAL" | |
| 371 >SDL_HWPALETTE</TT | |
| 372 ></TD | |
| 373 ><TD | |
| 374 ALIGN="LEFT" | |
| 375 VALIGN="TOP" | |
| 376 >Surface has exclusive palette</TD | |
| 377 ></TR | |
| 378 ><TR | |
| 379 ><TD | |
| 380 ALIGN="LEFT" | |
| 381 VALIGN="TOP" | |
| 382 ><TT | |
| 383 CLASS="LITERAL" | |
| 384 >SDL_DOUBLEBUF</TT | |
| 385 ></TD | |
| 386 ><TD | |
| 387 ALIGN="LEFT" | |
| 388 VALIGN="TOP" | |
| 389 >Surface is double buffered (Display surface)</TD | |
| 390 ></TR | |
| 391 ><TR | |
| 392 ><TD | |
| 393 ALIGN="LEFT" | |
| 394 VALIGN="TOP" | |
| 395 ><TT | |
| 396 CLASS="LITERAL" | |
| 397 >SDL_FULLSCREEN</TT | |
| 398 ></TD | |
| 399 ><TD | |
| 400 ALIGN="LEFT" | |
| 401 VALIGN="TOP" | |
| 402 >Surface is full screen (Display Surface)</TD | |
| 403 ></TR | |
| 404 ><TR | |
| 405 ><TD | |
| 406 ALIGN="LEFT" | |
| 407 VALIGN="TOP" | |
| 408 ><TT | |
| 409 CLASS="LITERAL" | |
| 410 >SDL_OPENGL</TT | |
| 411 ></TD | |
| 412 ><TD | |
| 413 ALIGN="LEFT" | |
| 414 VALIGN="TOP" | |
| 415 >Surface has an OpenGL context (Display Surface)</TD | |
| 416 ></TR | |
| 417 ><TR | |
| 418 ><TD | |
| 419 ALIGN="LEFT" | |
| 420 VALIGN="TOP" | |
| 421 ><TT | |
| 422 CLASS="LITERAL" | |
| 423 >SDL_OPENGLBLIT</TT | |
| 424 ></TD | |
| 425 ><TD | |
| 426 ALIGN="LEFT" | |
| 427 VALIGN="TOP" | |
| 428 >Surface supports OpenGL blitting (Display Surface)</TD | |
| 429 ></TR | |
| 430 ><TR | |
| 431 ><TD | |
| 432 ALIGN="LEFT" | |
| 433 VALIGN="TOP" | |
| 434 ><TT | |
| 435 CLASS="LITERAL" | |
| 436 >SDL_RESIZABLE</TT | |
| 437 ></TD | |
| 438 ><TD | |
| 439 ALIGN="LEFT" | |
| 440 VALIGN="TOP" | |
| 441 >Surface is resizable (Display Surface)</TD | |
| 442 ></TR | |
| 443 ><TR | |
| 444 ><TD | |
| 445 ALIGN="LEFT" | |
| 446 VALIGN="TOP" | |
| 447 ><TT | |
| 448 CLASS="LITERAL" | |
| 449 >SDL_HWACCEL</TT | |
| 450 ></TD | |
| 451 ><TD | |
| 452 ALIGN="LEFT" | |
| 453 VALIGN="TOP" | |
| 454 >Surface blit uses hardware acceleration</TD | |
| 455 ></TR | |
| 456 ><TR | |
| 457 ><TD | |
| 458 ALIGN="LEFT" | |
| 459 VALIGN="TOP" | |
| 460 ><TT | |
| 461 CLASS="LITERAL" | |
|
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462 >SDL_SRCCOLORKEY</TT |
| 0 | 463 ></TD |
| 464 ><TD | |
| 465 ALIGN="LEFT" | |
| 466 VALIGN="TOP" | |
| 467 >Surface use colorkey blitting</TD | |
| 468 ></TR | |
| 469 ><TR | |
| 470 ><TD | |
| 471 ALIGN="LEFT" | |
| 472 VALIGN="TOP" | |
| 473 ><TT | |
| 474 CLASS="LITERAL" | |
| 475 >SDL_RLEACCEL</TT | |
| 476 ></TD | |
| 477 ><TD | |
| 478 ALIGN="LEFT" | |
| 479 VALIGN="TOP" | |
| 480 >Colorkey blitting is accelerated with RLE</TD | |
| 481 ></TR | |
| 482 ><TR | |
| 483 ><TD | |
| 484 ALIGN="LEFT" | |
| 485 VALIGN="TOP" | |
| 486 ><TT | |
| 487 CLASS="LITERAL" | |
| 488 >SDL_SRCALPHA</TT | |
| 489 ></TD | |
| 490 ><TD | |
| 491 ALIGN="LEFT" | |
| 492 VALIGN="TOP" | |
| 493 >Surface blit uses alpha blending</TD | |
| 494 ></TR | |
| 495 ><TR | |
| 496 ><TD | |
| 497 ALIGN="LEFT" | |
| 498 VALIGN="TOP" | |
| 499 ><TT | |
| 500 CLASS="LITERAL" | |
| 501 >SDL_PREALLOC</TT | |
| 502 ></TD | |
| 503 ><TD | |
| 504 ALIGN="LEFT" | |
| 505 VALIGN="TOP" | |
| 506 >Surface uses preallocated memory</TD | |
| 507 ></TR | |
| 508 ></TBODY | |
| 509 ></TABLE | |
| 510 ><P | |
| 511 ></P | |
| 512 ></DIV | |
| 513 ></DIV | |
| 514 ><DIV | |
| 515 CLASS="REFSECT1" | |
| 516 ><A | |
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517 NAME="AEN2997" |
| 0 | 518 ></A |
| 519 ><H2 | |
| 520 >See Also</H2 | |
| 521 ><P | |
| 522 ><A | |
| 523 HREF="sdlpixelformat.html" | |
| 524 ><SPAN | |
| 525 CLASS="STRUCTNAME" | |
| 526 >SDL_PixelFormat</SPAN | |
| 527 ></A | |
| 528 ></P | |
| 529 ></DIV | |
| 530 ><DIV | |
| 531 CLASS="NAVFOOTER" | |
| 532 ><HR | |
| 533 ALIGN="LEFT" | |
| 534 WIDTH="100%"><TABLE | |
| 535 WIDTH="100%" | |
| 536 BORDER="0" | |
| 537 CELLPADDING="0" | |
| 538 CELLSPACING="0" | |
| 539 ><TR | |
| 540 ><TD | |
| 541 WIDTH="33%" | |
| 542 ALIGN="left" | |
| 543 VALIGN="top" | |
| 544 ><A | |
| 545 HREF="sdlpixelformat.html" | |
| 546 >Prev</A | |
| 547 ></TD | |
| 548 ><TD | |
| 549 WIDTH="34%" | |
| 550 ALIGN="center" | |
| 551 VALIGN="top" | |
| 552 ><A | |
| 553 HREF="index.html" | |
| 554 >Home</A | |
| 555 ></TD | |
| 556 ><TD | |
| 557 WIDTH="33%" | |
| 558 ALIGN="right" | |
| 559 VALIGN="top" | |
| 560 ><A | |
| 561 HREF="sdlvideoinfo.html" | |
| 562 >Next</A | |
| 563 ></TD | |
| 564 ></TR | |
| 565 ><TR | |
| 566 ><TD | |
| 567 WIDTH="33%" | |
| 568 ALIGN="left" | |
| 569 VALIGN="top" | |
| 570 >SDL_PixelFormat</TD | |
| 571 ><TD | |
| 572 WIDTH="34%" | |
| 573 ALIGN="center" | |
| 574 VALIGN="top" | |
| 575 ><A | |
| 576 HREF="video.html" | |
| 577 >Up</A | |
| 578 ></TD | |
| 579 ><TD | |
| 580 WIDTH="33%" | |
| 581 ALIGN="right" | |
| 582 VALIGN="top" | |
| 583 >SDL_VideoInfo</TD | |
| 584 ></TR | |
| 585 ></TABLE | |
| 586 ></DIV | |
| 587 ></BODY | |
| 588 ></HTML | |
| 589 > |