| 1 | /* |
| 2 | * Copyright © 2008 Red Hat, Inc. |
| 3 | * Partly based on code Copyright © 2000 SuSE, Inc. |
| 4 | * |
| 5 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 6 | * documentation for any purpose is hereby granted without fee, provided that |
| 7 | * the above copyright notice appear in all copies and that both that |
| 8 | * copyright notice and this permission notice appear in supporting |
| 9 | * documentation, and that the name of Red Hat not be used in advertising or |
| 10 | * publicity pertaining to distribution of the software without specific, |
| 11 | * written prior permission. Red Hat makes no representations about the |
| 12 | * suitability of this software for any purpose. It is provided "as is" |
| 13 | * without express or implied warranty. |
| 14 | * |
| 15 | * Red Hat DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL Red Hat |
| 17 | * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 18 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 19 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 20 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 21 | * |
| 22 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 23 | * documentation for any purpose is hereby granted without fee, provided that |
| 24 | * the above copyright notice appear in all copies and that both that |
| 25 | * copyright notice and this permission notice appear in supporting |
| 26 | * documentation, and that the name of SuSE not be used in advertising or |
| 27 | * publicity pertaining to distribution of the software without specific, |
| 28 | * written prior permission. SuSE makes no representations about the |
| 29 | * suitability of this software for any purpose. It is provided "as is" |
| 30 | * without express or implied warranty. |
| 31 | * |
| 32 | * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL |
| 33 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE |
| 34 | * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 35 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 36 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 37 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 38 | * |
| 39 | * Author: Owen Taylor <otaylor@fishsoup.net> |
| 40 | * Based on code by: Keith Packard |
| 41 | */ |
| 42 | |
| 43 | #ifdef HAVE_DIX_CONFIG_H |
| 44 | #include <dix-config.h> |
| 45 | #endif |
| 46 | |
| 47 | #include <stdlib.h> |
| 48 | |
| 49 | #include "exa_priv.h" |
| 50 | |
| 51 | #include "mipict.h" |
| 52 | |
| 53 | #if DEBUG_GLYPH_CACHE |
| 54 | #define DBG_GLYPH_CACHE(a) ErrorF a |
| 55 | #else |
| 56 | #define DBG_GLYPH_CACHE(a) |
| 57 | #endif |
| 58 | |
| 59 | /* Width of the pixmaps we use for the caches; this should be less than |
| 60 | * max texture size of the driver; this may need to actually come from |
| 61 | * the driver. |
| 62 | */ |
| 63 | #define CACHE_PICTURE_WIDTH 1024 |
| 64 | |
| 65 | /* Maximum number of glyphs we buffer on the stack before flushing |
| 66 | * rendering to the mask or destination surface. |
| 67 | */ |
| 68 | #define GLYPH_BUFFER_SIZE 256 |
| 69 | |
| 70 | typedef struct { |
| 71 | PicturePtr mask; |
| 72 | ExaCompositeRectRec rects[GLYPH_BUFFER_SIZE]; |
| 73 | int count; |
| 74 | } ExaGlyphBuffer, *ExaGlyphBufferPtr; |
| 75 | |
| 76 | typedef enum { |
| 77 | ExaGlyphSuccess, /* Glyph added to render buffer */ |
| 78 | ExaGlyphFail, /* out of memory, etc */ |
| 79 | ExaGlyphNeedFlush, /* would evict a glyph already in the buffer */ |
| 80 | } ExaGlyphCacheResult; |
| 81 | |
| 82 | void |
| 83 | exaGlyphsInit(ScreenPtr pScreen) |
| 84 | { |
| 85 | ExaScreenPriv(pScreen); |
| 86 | int i = 0; |
| 87 | |
| 88 | memset(pExaScr->glyphCaches, 0, sizeof(pExaScr->glyphCaches)); |
| 89 | |
| 90 | pExaScr->glyphCaches[i].format = PICT_a8; |
| 91 | pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = |
| 92 | 16; |
| 93 | i++; |
| 94 | pExaScr->glyphCaches[i].format = PICT_a8; |
| 95 | pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = |
| 96 | 32; |
| 97 | i++; |
| 98 | pExaScr->glyphCaches[i].format = PICT_a8r8g8b8; |
| 99 | pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = |
| 100 | 16; |
| 101 | i++; |
| 102 | pExaScr->glyphCaches[i].format = PICT_a8r8g8b8; |
| 103 | pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = |
| 104 | 32; |
| 105 | i++; |
| 106 | |
| 107 | assert(i == EXA_NUM_GLYPH_CACHES); |
| 108 | |
| 109 | for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) { |
| 110 | pExaScr->glyphCaches[i].columns = |
| 111 | CACHE_PICTURE_WIDTH / pExaScr->glyphCaches[i].glyphWidth; |
| 112 | pExaScr->glyphCaches[i].size = 256; |
| 113 | pExaScr->glyphCaches[i].hashSize = 557; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | static void |
| 118 | exaUnrealizeGlyphCaches(ScreenPtr pScreen, unsigned int format) |
| 119 | { |
| 120 | ExaScreenPriv(pScreen); |
| 121 | int i; |
| 122 | |
| 123 | for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) { |
| 124 | ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i]; |
| 125 | |
| 126 | if (cache->format != format) |
| 127 | continue; |
| 128 | |
| 129 | if (cache->picture) { |
| 130 | FreePicture((pointer) cache->picture, (XID) 0); |
| 131 | cache->picture = NULL; |
| 132 | } |
| 133 | |
| 134 | free(cache->hashEntries); |
| 135 | cache->hashEntries = NULL; |
| 136 | |
| 137 | free(cache->glyphs); |
| 138 | cache->glyphs = NULL; |
| 139 | cache->glyphCount = 0; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | #define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0) |
| 144 | |
| 145 | /* All caches for a single format share a single pixmap for glyph storage, |
| 146 | * allowing mixing glyphs of different sizes without paying a penalty |
| 147 | * for switching between mask pixmaps. (Note that for a size of font |
| 148 | * right at the border between two sizes, we might be switching for almost |
| 149 | * every glyph.) |
| 150 | * |
| 151 | * This function allocates the storage pixmap, and then fills in the |
| 152 | * rest of the allocated structures for all caches with the given format. |
| 153 | */ |
| 154 | static Bool |
| 155 | exaRealizeGlyphCaches(ScreenPtr pScreen, unsigned int format) |
| 156 | { |
| 157 | ExaScreenPriv(pScreen); |
| 158 | |
| 159 | int depth = PIXMAN_FORMAT_DEPTH(format); |
| 160 | PictFormatPtr pPictFormat; |
| 161 | PixmapPtr pPixmap; |
| 162 | PicturePtr pPicture; |
| 163 | CARD32 component_alpha; |
| 164 | int height; |
| 165 | int i; |
| 166 | int error; |
| 167 | |
| 168 | pPictFormat = PictureMatchFormat(pScreen, depth, format); |
| 169 | if (!pPictFormat) |
| 170 | return FALSE; |
| 171 | |
| 172 | /* Compute the total vertical size needed for the format */ |
| 173 | |
| 174 | height = 0; |
| 175 | for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) { |
| 176 | ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i]; |
| 177 | int rows; |
| 178 | |
| 179 | if (cache->format != format) |
| 180 | continue; |
| 181 | |
| 182 | cache->yOffset = height; |
| 183 | |
| 184 | rows = (cache->size + cache->columns - 1) / cache->columns; |
| 185 | height += rows * cache->glyphHeight; |
| 186 | } |
| 187 | |
| 188 | /* Now allocate the pixmap and picture */ |
| 189 | pPixmap = (*pScreen->CreatePixmap) (pScreen, |
| 190 | CACHE_PICTURE_WIDTH, height, depth, 0); |
| 191 | if (!pPixmap) |
| 192 | return FALSE; |
| 193 | |
| 194 | component_alpha = NeedsComponent(pPictFormat->format); |
| 195 | pPicture = CreatePicture(0, &pPixmap->drawable, pPictFormat, |
| 196 | CPComponentAlpha, &component_alpha, serverClient, |
| 197 | &error); |
| 198 | |
| 199 | (*pScreen->DestroyPixmap) (pPixmap); /* picture holds a refcount */ |
| 200 | |
| 201 | if (!pPicture) |
| 202 | return FALSE; |
| 203 | |
| 204 | /* And store the picture in all the caches for the format */ |
| 205 | for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) { |
| 206 | ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i]; |
| 207 | int j; |
| 208 | |
| 209 | if (cache->format != format) |
| 210 | continue; |
| 211 | |
| 212 | cache->picture = pPicture; |
| 213 | cache->picture->refcnt++; |
| 214 | cache->hashEntries = malloc(sizeof(int) * cache->hashSize); |
| 215 | cache->glyphs = malloc(sizeof(ExaCachedGlyphRec) * cache->size); |
| 216 | cache->glyphCount = 0; |
| 217 | |
| 218 | if (!cache->hashEntries || !cache->glyphs) |
| 219 | goto bail; |
| 220 | |
| 221 | for (j = 0; j < cache->hashSize; j++) |
| 222 | cache->hashEntries[j] = -1; |
| 223 | |
| 224 | cache->evictionPosition = rand() % cache->size; |
| 225 | } |
| 226 | |
| 227 | /* Each cache references the picture individually */ |
| 228 | FreePicture((pointer) pPicture, (XID) 0); |
| 229 | return TRUE; |
| 230 | |
| 231 | bail: |
| 232 | exaUnrealizeGlyphCaches(pScreen, format); |
| 233 | return FALSE; |
| 234 | } |
| 235 | |
| 236 | void |
| 237 | exaGlyphsFini(ScreenPtr pScreen) |
| 238 | { |
| 239 | ExaScreenPriv(pScreen); |
| 240 | int i; |
| 241 | |
| 242 | for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) { |
| 243 | ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i]; |
| 244 | |
| 245 | if (cache->picture) |
| 246 | exaUnrealizeGlyphCaches(pScreen, cache->format); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | static int |
| 251 | exaGlyphCacheHashLookup(ExaGlyphCachePtr cache, GlyphPtr pGlyph) |
| 252 | { |
| 253 | int slot; |
| 254 | |
| 255 | slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize; |
| 256 | |
| 257 | while (TRUE) { /* hash table can never be full */ |
| 258 | int entryPos = cache->hashEntries[slot]; |
| 259 | |
| 260 | if (entryPos == -1) |
| 261 | return -1; |
| 262 | |
| 263 | if (memcmp |
| 264 | (pGlyph->sha1, cache->glyphs[entryPos].sha1, |
| 265 | sizeof(pGlyph->sha1)) == 0) { |
| 266 | return entryPos; |
| 267 | } |
| 268 | |
| 269 | slot--; |
| 270 | if (slot < 0) |
| 271 | slot = cache->hashSize - 1; |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | static void |
| 276 | exaGlyphCacheHashInsert(ExaGlyphCachePtr cache, GlyphPtr pGlyph, int pos) |
| 277 | { |
| 278 | int slot; |
| 279 | |
| 280 | memcpy(cache->glyphs[pos].sha1, pGlyph->sha1, sizeof(pGlyph->sha1)); |
| 281 | |
| 282 | slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize; |
| 283 | |
| 284 | while (TRUE) { /* hash table can never be full */ |
| 285 | if (cache->hashEntries[slot] == -1) { |
| 286 | cache->hashEntries[slot] = pos; |
| 287 | return; |
| 288 | } |
| 289 | |
| 290 | slot--; |
| 291 | if (slot < 0) |
| 292 | slot = cache->hashSize - 1; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | static void |
| 297 | exaGlyphCacheHashRemove(ExaGlyphCachePtr cache, int pos) |
| 298 | { |
| 299 | int slot; |
| 300 | int emptiedSlot = -1; |
| 301 | |
| 302 | slot = (*(CARD32 *) cache->glyphs[pos].sha1) % cache->hashSize; |
| 303 | |
| 304 | while (TRUE) { /* hash table can never be full */ |
| 305 | int entryPos = cache->hashEntries[slot]; |
| 306 | |
| 307 | if (entryPos == -1) |
| 308 | return; |
| 309 | |
| 310 | if (entryPos == pos) { |
| 311 | cache->hashEntries[slot] = -1; |
| 312 | emptiedSlot = slot; |
| 313 | } |
| 314 | else if (emptiedSlot != -1) { |
| 315 | /* See if we can move this entry into the emptied slot, we can't |
| 316 | * do that if if entry would have hashed between the current position |
| 317 | * and the emptied slot. (taking wrapping into account). Bad positions |
| 318 | * are: |
| 319 | * |
| 320 | * | XXXXXXXXXX | |
| 321 | * i j |
| 322 | * |
| 323 | * |XXX XXXX| |
| 324 | * j i |
| 325 | * |
| 326 | * i - slot, j - emptiedSlot |
| 327 | * |
| 328 | * (Knuth 6.4R) |
| 329 | */ |
| 330 | |
| 331 | int entrySlot = |
| 332 | (*(CARD32 *) cache->glyphs[entryPos].sha1) % cache->hashSize; |
| 333 | |
| 334 | if (!((entrySlot >= slot && entrySlot < emptiedSlot) || |
| 335 | (emptiedSlot < slot && |
| 336 | (entrySlot < emptiedSlot || entrySlot >= slot)))) { |
| 337 | cache->hashEntries[emptiedSlot] = entryPos; |
| 338 | cache->hashEntries[slot] = -1; |
| 339 | emptiedSlot = slot; |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | slot--; |
| 344 | if (slot < 0) |
| 345 | slot = cache->hashSize - 1; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | #define CACHE_X(pos) (((pos) % cache->columns) * cache->glyphWidth) |
| 350 | #define CACHE_Y(pos) (cache->yOffset + ((pos) / cache->columns) * cache->glyphHeight) |
| 351 | |
| 352 | /* The most efficient thing to way to upload the glyph to the screen |
| 353 | * is to use the UploadToScreen() driver hook; this allows us to |
| 354 | * pipeline glyph uploads and to avoid creating gpu backed pixmaps for |
| 355 | * glyphs that we'll never use again. |
| 356 | * |
| 357 | * If we can't do it with UploadToScreen (because the glyph has a gpu copy, |
| 358 | * etc), we fall back to CompositePicture. |
| 359 | * |
| 360 | * We need to damage the cache pixmap manually in either case because the damage |
| 361 | * layer unwrapped the picture screen before calling exaGlyphs. |
| 362 | */ |
| 363 | static void |
| 364 | exaGlyphCacheUploadGlyph(ScreenPtr pScreen, |
| 365 | ExaGlyphCachePtr cache, int x, int y, GlyphPtr pGlyph) |
| 366 | { |
| 367 | ExaScreenPriv(pScreen); |
| 368 | PicturePtr pGlyphPicture = GetGlyphPicture(pGlyph, pScreen); |
| 369 | PixmapPtr pGlyphPixmap = (PixmapPtr) pGlyphPicture->pDrawable; |
| 370 | |
| 371 | ExaPixmapPriv(pGlyphPixmap); |
| 372 | PixmapPtr pCachePixmap = (PixmapPtr) cache->picture->pDrawable; |
| 373 | |
| 374 | if (!pExaScr->info->UploadToScreen || pExaScr->swappedOut || |
| 375 | pExaPixmap->accel_blocked) |
| 376 | goto composite; |
| 377 | |
| 378 | /* If the glyph pixmap is already uploaded, no point in doing |
| 379 | * things this way */ |
| 380 | if (exaPixmapHasGpuCopy(pGlyphPixmap)) |
| 381 | goto composite; |
| 382 | |
| 383 | /* UploadToScreen only works if bpp match */ |
| 384 | if (pGlyphPixmap->drawable.bitsPerPixel != |
| 385 | pCachePixmap->drawable.bitsPerPixel) |
| 386 | goto composite; |
| 387 | |
| 388 | if (pExaScr->do_migration) { |
| 389 | ExaMigrationRec pixmaps[1]; |
| 390 | |
| 391 | /* cache pixmap must have a gpu copy. */ |
| 392 | pixmaps[0].as_dst = TRUE; |
| 393 | pixmaps[0].as_src = FALSE; |
| 394 | pixmaps[0].pPix = pCachePixmap; |
| 395 | pixmaps[0].pReg = NULL; |
| 396 | exaDoMigration(pixmaps, 1, TRUE); |
| 397 | } |
| 398 | |
| 399 | if (!exaPixmapHasGpuCopy(pCachePixmap)) |
| 400 | goto composite; |
| 401 | |
| 402 | /* x,y are in pixmap coordinates, no need for cache{X,Y}off */ |
| 403 | if (pExaScr->info->UploadToScreen(pCachePixmap, |
| 404 | x, |
| 405 | y, |
| 406 | pGlyph->info.width, |
| 407 | pGlyph->info.height, |
| 408 | (char *) pExaPixmap->sys_ptr, |
| 409 | pExaPixmap->sys_pitch)) |
| 410 | goto damage; |
| 411 | |
| 412 | composite: |
| 413 | CompositePicture(PictOpSrc, |
| 414 | pGlyphPicture, |
| 415 | None, |
| 416 | cache->picture, |
| 417 | 0, 0, 0, 0, x, y, pGlyph->info.width, pGlyph->info.height); |
| 418 | |
| 419 | damage: |
| 420 | /* The cache pixmap isn't a window, so no need to offset coordinates. */ |
| 421 | exaPixmapDirty(pCachePixmap, |
| 422 | x, y, x + cache->glyphWidth, y + cache->glyphHeight); |
| 423 | } |
| 424 | |
| 425 | static ExaGlyphCacheResult |
| 426 | exaGlyphCacheBufferGlyph(ScreenPtr pScreen, |
| 427 | ExaGlyphCachePtr cache, |
| 428 | ExaGlyphBufferPtr buffer, |
| 429 | GlyphPtr pGlyph, |
| 430 | PicturePtr pSrc, |
| 431 | PicturePtr pDst, |
| 432 | INT16 xSrc, |
| 433 | INT16 ySrc, |
| 434 | INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst) |
| 435 | { |
| 436 | ExaCompositeRectPtr rect; |
| 437 | int pos; |
| 438 | int x, y; |
| 439 | |
| 440 | if (buffer->mask && buffer->mask != cache->picture) |
| 441 | return ExaGlyphNeedFlush; |
| 442 | |
| 443 | if (!cache->picture) { |
| 444 | if (!exaRealizeGlyphCaches(pScreen, cache->format)) |
| 445 | return ExaGlyphFail; |
| 446 | } |
| 447 | |
| 448 | DBG_GLYPH_CACHE(("(%d,%d,%s): buffering glyph %lx\n", |
| 449 | cache->glyphWidth, cache->glyphHeight, |
| 450 | cache->format == PICT_a8 ? "A" : "ARGB", |
| 451 | (long) *(CARD32 *) pGlyph->sha1)); |
| 452 | |
| 453 | pos = exaGlyphCacheHashLookup(cache, pGlyph); |
| 454 | if (pos != -1) { |
| 455 | DBG_GLYPH_CACHE((" found existing glyph at %d\n", pos)); |
| 456 | x = CACHE_X(pos); |
| 457 | y = CACHE_Y(pos); |
| 458 | } |
| 459 | else { |
| 460 | if (cache->glyphCount < cache->size) { |
| 461 | /* Space remaining; we fill from the start */ |
| 462 | pos = cache->glyphCount; |
| 463 | x = CACHE_X(pos); |
| 464 | y = CACHE_Y(pos); |
| 465 | cache->glyphCount++; |
| 466 | DBG_GLYPH_CACHE((" storing glyph in free space at %d\n", pos)); |
| 467 | |
| 468 | exaGlyphCacheHashInsert(cache, pGlyph, pos); |
| 469 | |
| 470 | } |
| 471 | else { |
| 472 | /* Need to evict an entry. We have to see if any glyphs |
| 473 | * already in the output buffer were at this position in |
| 474 | * the cache |
| 475 | */ |
| 476 | pos = cache->evictionPosition; |
| 477 | x = CACHE_X(pos); |
| 478 | y = CACHE_Y(pos); |
| 479 | DBG_GLYPH_CACHE((" evicting glyph at %d\n", pos)); |
| 480 | if (buffer->count) { |
| 481 | int i; |
| 482 | |
| 483 | for (i = 0; i < buffer->count; i++) { |
| 484 | if (pSrc ? |
| 485 | (buffer->rects[i].xMask == x && |
| 486 | buffer->rects[i].yMask == |
| 487 | y) : (buffer->rects[i].xSrc == x && |
| 488 | buffer->rects[i].ySrc == y)) { |
| 489 | DBG_GLYPH_CACHE((" must flush buffer\n")); |
| 490 | return ExaGlyphNeedFlush; |
| 491 | } |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | /* OK, we're all set, swap in the new glyph */ |
| 496 | exaGlyphCacheHashRemove(cache, pos); |
| 497 | exaGlyphCacheHashInsert(cache, pGlyph, pos); |
| 498 | |
| 499 | /* And pick a new eviction position */ |
| 500 | cache->evictionPosition = rand() % cache->size; |
| 501 | } |
| 502 | |
| 503 | exaGlyphCacheUploadGlyph(pScreen, cache, x, y, pGlyph); |
| 504 | } |
| 505 | |
| 506 | buffer->mask = cache->picture; |
| 507 | |
| 508 | rect = &buffer->rects[buffer->count]; |
| 509 | |
| 510 | if (pSrc) { |
| 511 | rect->xSrc = xSrc; |
| 512 | rect->ySrc = ySrc; |
| 513 | rect->xMask = x; |
| 514 | rect->yMask = y; |
| 515 | } |
| 516 | else { |
| 517 | rect->xSrc = x; |
| 518 | rect->ySrc = y; |
| 519 | rect->xMask = 0; |
| 520 | rect->yMask = 0; |
| 521 | } |
| 522 | |
| 523 | rect->pDst = pDst; |
| 524 | rect->xDst = xDst; |
| 525 | rect->yDst = yDst; |
| 526 | rect->width = pGlyph->info.width; |
| 527 | rect->height = pGlyph->info.height; |
| 528 | |
| 529 | buffer->count++; |
| 530 | |
| 531 | return ExaGlyphSuccess; |
| 532 | } |
| 533 | |
| 534 | #undef CACHE_X |
| 535 | #undef CACHE_Y |
| 536 | |
| 537 | static ExaGlyphCacheResult |
| 538 | exaBufferGlyph(ScreenPtr pScreen, |
| 539 | ExaGlyphBufferPtr buffer, |
| 540 | GlyphPtr pGlyph, |
| 541 | PicturePtr pSrc, |
| 542 | PicturePtr pDst, |
| 543 | INT16 xSrc, |
| 544 | INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst) |
| 545 | { |
| 546 | ExaScreenPriv(pScreen); |
| 547 | unsigned int format = (GetGlyphPicture(pGlyph, pScreen))->format; |
| 548 | int width = pGlyph->info.width; |
| 549 | int height = pGlyph->info.height; |
| 550 | ExaCompositeRectPtr rect; |
| 551 | PicturePtr mask; |
| 552 | int i; |
| 553 | |
| 554 | if (buffer->count == GLYPH_BUFFER_SIZE) |
| 555 | return ExaGlyphNeedFlush; |
| 556 | |
| 557 | if (PICT_FORMAT_BPP(format) == 1) |
| 558 | format = PICT_a8; |
| 559 | |
| 560 | for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) { |
| 561 | ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i]; |
| 562 | |
| 563 | if (format == cache->format && |
| 564 | width <= cache->glyphWidth && height <= cache->glyphHeight) { |
| 565 | ExaGlyphCacheResult result = exaGlyphCacheBufferGlyph(pScreen, |
| 566 | &pExaScr-> |
| 567 | glyphCaches |
| 568 | [i], |
| 569 | buffer, |
| 570 | pGlyph, |
| 571 | pSrc, |
| 572 | pDst, |
| 573 | xSrc, ySrc, |
| 574 | xMask, yMask, |
| 575 | xDst, yDst); |
| 576 | |
| 577 | switch (result) { |
| 578 | case ExaGlyphFail: |
| 579 | break; |
| 580 | case ExaGlyphSuccess: |
| 581 | case ExaGlyphNeedFlush: |
| 582 | return result; |
| 583 | } |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | /* Couldn't find the glyph in the cache, use the glyph picture directly */ |
| 588 | |
| 589 | mask = GetGlyphPicture(pGlyph, pScreen); |
| 590 | if (buffer->mask && buffer->mask != mask) |
| 591 | return ExaGlyphNeedFlush; |
| 592 | |
| 593 | buffer->mask = mask; |
| 594 | |
| 595 | rect = &buffer->rects[buffer->count]; |
| 596 | rect->xSrc = xSrc; |
| 597 | rect->ySrc = ySrc; |
| 598 | rect->xMask = xMask; |
| 599 | rect->yMask = yMask; |
| 600 | rect->xDst = xDst; |
| 601 | rect->yDst = yDst; |
| 602 | rect->width = width; |
| 603 | rect->height = height; |
| 604 | |
| 605 | buffer->count++; |
| 606 | |
| 607 | return ExaGlyphSuccess; |
| 608 | } |
| 609 | |
| 610 | static void |
| 611 | exaGlyphsToMask(PicturePtr pMask, ExaGlyphBufferPtr buffer) |
| 612 | { |
| 613 | exaCompositeRects(PictOpAdd, buffer->mask, NULL, pMask, |
| 614 | buffer->count, buffer->rects); |
| 615 | |
| 616 | buffer->count = 0; |
| 617 | buffer->mask = NULL; |
| 618 | } |
| 619 | |
| 620 | static void |
| 621 | exaGlyphsToDst(PicturePtr pSrc, PicturePtr pDst, ExaGlyphBufferPtr buffer) |
| 622 | { |
| 623 | exaCompositeRects(PictOpOver, pSrc, buffer->mask, pDst, buffer->count, |
| 624 | buffer->rects); |
| 625 | |
| 626 | buffer->count = 0; |
| 627 | buffer->mask = NULL; |
| 628 | } |
| 629 | |
| 630 | /* Cut and paste from render/glyph.c - probably should export it instead */ |
| 631 | static void |
| 632 | GlyphExtents(int nlist, GlyphListPtr list, GlyphPtr * glyphs, BoxPtr extents) |
| 633 | { |
| 634 | int x1, x2, y1, y2; |
| 635 | int n; |
| 636 | GlyphPtr glyph; |
| 637 | int x, y; |
| 638 | |
| 639 | x = 0; |
| 640 | y = 0; |
| 641 | extents->x1 = MAXSHORT; |
| 642 | extents->x2 = MINSHORT; |
| 643 | extents->y1 = MAXSHORT; |
| 644 | extents->y2 = MINSHORT; |
| 645 | while (nlist--) { |
| 646 | x += list->xOff; |
| 647 | y += list->yOff; |
| 648 | n = list->len; |
| 649 | list++; |
| 650 | while (n--) { |
| 651 | glyph = *glyphs++; |
| 652 | x1 = x - glyph->info.x; |
| 653 | if (x1 < MINSHORT) |
| 654 | x1 = MINSHORT; |
| 655 | y1 = y - glyph->info.y; |
| 656 | if (y1 < MINSHORT) |
| 657 | y1 = MINSHORT; |
| 658 | x2 = x1 + glyph->info.width; |
| 659 | if (x2 > MAXSHORT) |
| 660 | x2 = MAXSHORT; |
| 661 | y2 = y1 + glyph->info.height; |
| 662 | if (y2 > MAXSHORT) |
| 663 | y2 = MAXSHORT; |
| 664 | if (x1 < extents->x1) |
| 665 | extents->x1 = x1; |
| 666 | if (x2 > extents->x2) |
| 667 | extents->x2 = x2; |
| 668 | if (y1 < extents->y1) |
| 669 | extents->y1 = y1; |
| 670 | if (y2 > extents->y2) |
| 671 | extents->y2 = y2; |
| 672 | x += glyph->info.xOff; |
| 673 | y += glyph->info.yOff; |
| 674 | } |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | void |
| 679 | exaGlyphs(CARD8 op, |
| 680 | PicturePtr pSrc, |
| 681 | PicturePtr pDst, |
| 682 | PictFormatPtr maskFormat, |
| 683 | INT16 xSrc, |
| 684 | INT16 ySrc, int nlist, GlyphListPtr list, GlyphPtr * glyphs) |
| 685 | { |
| 686 | PixmapPtr pMaskPixmap = 0; |
| 687 | PicturePtr pMask = NULL; |
| 688 | ScreenPtr pScreen = pDst->pDrawable->pScreen; |
| 689 | int width = 0, height = 0; |
| 690 | int x, y; |
| 691 | int first_xOff = list->xOff, first_yOff = list->yOff; |
| 692 | int n; |
| 693 | GlyphPtr glyph; |
| 694 | int error; |
| 695 | BoxRec extents = { 0, 0, 0, 0 }; |
| 696 | CARD32 component_alpha; |
| 697 | ExaGlyphBuffer buffer; |
| 698 | |
| 699 | if (maskFormat) { |
| 700 | ExaScreenPriv(pScreen); |
| 701 | GCPtr pGC; |
| 702 | xRectangle rect; |
| 703 | |
| 704 | GlyphExtents(nlist, list, glyphs, &extents); |
| 705 | |
| 706 | if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1) |
| 707 | return; |
| 708 | width = extents.x2 - extents.x1; |
| 709 | height = extents.y2 - extents.y1; |
| 710 | |
| 711 | if (maskFormat->depth == 1) { |
| 712 | PictFormatPtr a8Format = PictureMatchFormat(pScreen, 8, PICT_a8); |
| 713 | |
| 714 | if (a8Format) |
| 715 | maskFormat = a8Format; |
| 716 | } |
| 717 | |
| 718 | pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, |
| 719 | maskFormat->depth, |
| 720 | CREATE_PIXMAP_USAGE_SCRATCH); |
| 721 | if (!pMaskPixmap) |
| 722 | return; |
| 723 | component_alpha = NeedsComponent(maskFormat->format); |
| 724 | pMask = CreatePicture(0, &pMaskPixmap->drawable, |
| 725 | maskFormat, CPComponentAlpha, &component_alpha, |
| 726 | serverClient, &error); |
| 727 | if (!pMask || |
| 728 | (!component_alpha && pExaScr->info->CheckComposite && |
| 729 | !(*pExaScr->info->CheckComposite) (PictOpAdd, pSrc, NULL, pMask))) |
| 730 | { |
| 731 | PictFormatPtr argbFormat; |
| 732 | |
| 733 | (*pScreen->DestroyPixmap) (pMaskPixmap); |
| 734 | |
| 735 | if (!pMask) |
| 736 | return; |
| 737 | |
| 738 | /* The driver can't seem to composite to a8, let's try argb (but |
| 739 | * without component-alpha) */ |
| 740 | FreePicture((pointer) pMask, (XID) 0); |
| 741 | |
| 742 | argbFormat = PictureMatchFormat(pScreen, 32, PICT_a8r8g8b8); |
| 743 | |
| 744 | if (argbFormat) |
| 745 | maskFormat = argbFormat; |
| 746 | |
| 747 | pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, |
| 748 | maskFormat->depth, |
| 749 | CREATE_PIXMAP_USAGE_SCRATCH); |
| 750 | if (!pMaskPixmap) |
| 751 | return; |
| 752 | |
| 753 | pMask = CreatePicture(0, &pMaskPixmap->drawable, maskFormat, 0, 0, |
| 754 | serverClient, &error); |
| 755 | if (!pMask) { |
| 756 | (*pScreen->DestroyPixmap) (pMaskPixmap); |
| 757 | return; |
| 758 | } |
| 759 | } |
| 760 | pGC = GetScratchGC(pMaskPixmap->drawable.depth, pScreen); |
| 761 | ValidateGC(&pMaskPixmap->drawable, pGC); |
| 762 | rect.x = 0; |
| 763 | rect.y = 0; |
| 764 | rect.width = width; |
| 765 | rect.height = height; |
| 766 | (*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect); |
| 767 | FreeScratchGC(pGC); |
| 768 | x = -extents.x1; |
| 769 | y = -extents.y1; |
| 770 | } |
| 771 | else { |
| 772 | x = 0; |
| 773 | y = 0; |
| 774 | } |
| 775 | buffer.count = 0; |
| 776 | buffer.mask = NULL; |
| 777 | while (nlist--) { |
| 778 | x += list->xOff; |
| 779 | y += list->yOff; |
| 780 | n = list->len; |
| 781 | while (n--) { |
| 782 | glyph = *glyphs++; |
| 783 | |
| 784 | if (glyph->info.width > 0 && glyph->info.height > 0) { |
| 785 | /* pGlyph->info.{x,y} compensate for empty space in the glyph. */ |
| 786 | if (maskFormat) { |
| 787 | if (exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask, |
| 788 | 0, 0, 0, 0, x - glyph->info.x, |
| 789 | y - glyph->info.y) == |
| 790 | ExaGlyphNeedFlush) { |
| 791 | exaGlyphsToMask(pMask, &buffer); |
| 792 | exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask, |
| 793 | 0, 0, 0, 0, x - glyph->info.x, |
| 794 | y - glyph->info.y); |
| 795 | } |
| 796 | } |
| 797 | else { |
| 798 | if (exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst, |
| 799 | xSrc + (x - glyph->info.x) - first_xOff, |
| 800 | ySrc + (y - glyph->info.y) - first_yOff, |
| 801 | 0, 0, x - glyph->info.x, |
| 802 | y - glyph->info.y) |
| 803 | == ExaGlyphNeedFlush) { |
| 804 | exaGlyphsToDst(pSrc, pDst, &buffer); |
| 805 | exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst, |
| 806 | xSrc + (x - glyph->info.x) - first_xOff, |
| 807 | ySrc + (y - glyph->info.y) - first_yOff, |
| 808 | 0, 0, x - glyph->info.x, |
| 809 | y - glyph->info.y); |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | x += glyph->info.xOff; |
| 815 | y += glyph->info.yOff; |
| 816 | } |
| 817 | list++; |
| 818 | } |
| 819 | |
| 820 | if (buffer.count) { |
| 821 | if (maskFormat) |
| 822 | exaGlyphsToMask(pMask, &buffer); |
| 823 | else |
| 824 | exaGlyphsToDst(pSrc, pDst, &buffer); |
| 825 | } |
| 826 | |
| 827 | if (maskFormat) { |
| 828 | x = extents.x1; |
| 829 | y = extents.y1; |
| 830 | CompositePicture(op, |
| 831 | pSrc, |
| 832 | pMask, |
| 833 | pDst, |
| 834 | xSrc + x - first_xOff, |
| 835 | ySrc + y - first_yOff, 0, 0, x, y, width, height); |
| 836 | FreePicture((pointer) pMask, (XID) 0); |
| 837 | (*pScreen->DestroyPixmap) (pMaskPixmap); |
| 838 | } |
| 839 | } |