| 1 | /* |
| 2 | * Copyright © 2006 Keith Packard |
| 3 | * Copyright © 2011 Aaron Plattner |
| 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 copyright |
| 8 | * notice and this permission notice appear in supporting documentation, and |
| 9 | * that the name of the copyright holders not be used in advertising or |
| 10 | * publicity pertaining to distribution of the software without specific, |
| 11 | * written prior permission. The copyright holders make no representations |
| 12 | * about the suitability of this software for any purpose. It is provided "as |
| 13 | * is" without express or implied warranty. |
| 14 | * |
| 15 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 16 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 17 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 18 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 19 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 20 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 21 | * OF THIS SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #ifdef HAVE_XORG_CONFIG_H |
| 25 | #include <xorg-config.h> |
| 26 | #else |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include <config.h> |
| 29 | #endif |
| 30 | #endif |
| 31 | |
| 32 | #include <stddef.h> |
| 33 | #include <string.h> |
| 34 | #include <stdio.h> |
| 35 | |
| 36 | #include "xf86.h" |
| 37 | #include "xf86DDC.h" |
| 38 | #include "fb.h" |
| 39 | #include "windowstr.h" |
| 40 | #include "xf86Crtc.h" |
| 41 | #include "xf86Modes.h" |
| 42 | #include "xf86RandR12.h" |
| 43 | #include "X11/extensions/render.h" |
| 44 | #include "X11/extensions/dpmsconst.h" |
| 45 | #include "X11/Xatom.h" |
| 46 | |
| 47 | /* borrowed from composite extension, move to Render and publish? */ |
| 48 | |
| 49 | #define F(x) IntToxFixed(x) |
| 50 | |
| 51 | #define toF(x) ((float) (x) / 65536.0f) |
| 52 | |
| 53 | static void |
| 54 | xf86RotateCrtcRedisplay(xf86CrtcPtr crtc, RegionPtr region) |
| 55 | { |
| 56 | ScrnInfoPtr scrn = crtc->scrn; |
| 57 | ScreenPtr screen = scrn->pScreen; |
| 58 | WindowPtr root = screen->root; |
| 59 | PixmapPtr dst_pixmap = crtc->rotatedPixmap; |
| 60 | PictFormatPtr format = PictureWindowFormat(screen->root); |
| 61 | int error; |
| 62 | PicturePtr src, dst; |
| 63 | int n = RegionNumRects(region); |
| 64 | BoxPtr b = RegionRects(region); |
| 65 | XID include_inferiors = IncludeInferiors; |
| 66 | |
| 67 | if (crtc->driverIsPerformingTransform) |
| 68 | return; |
| 69 | |
| 70 | src = CreatePicture(None, |
| 71 | &root->drawable, |
| 72 | format, |
| 73 | CPSubwindowMode, |
| 74 | &include_inferiors, serverClient, &error); |
| 75 | if (!src) |
| 76 | return; |
| 77 | |
| 78 | dst = CreatePicture(None, |
| 79 | &dst_pixmap->drawable, |
| 80 | format, 0L, NULL, serverClient, &error); |
| 81 | if (!dst) |
| 82 | return; |
| 83 | |
| 84 | error = SetPictureTransform(src, &crtc->crtc_to_framebuffer); |
| 85 | if (error) |
| 86 | return; |
| 87 | if (crtc->transform_in_use && crtc->filter) |
| 88 | SetPicturePictFilter(src, crtc->filter, crtc->params, crtc->nparams); |
| 89 | |
| 90 | if (crtc->shadowClear) { |
| 91 | CompositePicture(PictOpSrc, |
| 92 | src, NULL, dst, |
| 93 | 0, 0, 0, 0, 0, 0, |
| 94 | crtc->mode.HDisplay, crtc->mode.VDisplay); |
| 95 | crtc->shadowClear = FALSE; |
| 96 | } |
| 97 | else { |
| 98 | while (n--) { |
| 99 | BoxRec dst_box; |
| 100 | |
| 101 | dst_box = *b; |
| 102 | dst_box.x1 -= crtc->filter_width >> 1; |
| 103 | dst_box.x2 += crtc->filter_width >> 1; |
| 104 | dst_box.y1 -= crtc->filter_height >> 1; |
| 105 | dst_box.y2 += crtc->filter_height >> 1; |
| 106 | pixman_f_transform_bounds(&crtc->f_framebuffer_to_crtc, &dst_box); |
| 107 | CompositePicture(PictOpSrc, |
| 108 | src, NULL, dst, |
| 109 | dst_box.x1, dst_box.y1, 0, 0, dst_box.x1, |
| 110 | dst_box.y1, dst_box.x2 - dst_box.x1, |
| 111 | dst_box.y2 - dst_box.y1); |
| 112 | b++; |
| 113 | } |
| 114 | } |
| 115 | FreePicture(src, None); |
| 116 | FreePicture(dst, None); |
| 117 | } |
| 118 | |
| 119 | static void |
| 120 | xf86CrtcDamageShadow(xf86CrtcPtr crtc) |
| 121 | { |
| 122 | ScrnInfoPtr pScrn = crtc->scrn; |
| 123 | BoxRec damage_box; |
| 124 | RegionRec damage_region; |
| 125 | ScreenPtr pScreen = xf86ScrnToScreen(pScrn); |
| 126 | |
| 127 | damage_box.x1 = 0; |
| 128 | damage_box.x2 = crtc->mode.HDisplay; |
| 129 | damage_box.y1 = 0; |
| 130 | damage_box.y2 = crtc->mode.VDisplay; |
| 131 | if (!pixman_transform_bounds(&crtc->crtc_to_framebuffer, &damage_box)) { |
| 132 | damage_box.x1 = 0; |
| 133 | damage_box.y1 = 0; |
| 134 | damage_box.x2 = pScreen->width; |
| 135 | damage_box.y2 = pScreen->height; |
| 136 | } |
| 137 | if (damage_box.x1 < 0) |
| 138 | damage_box.x1 = 0; |
| 139 | if (damage_box.y1 < 0) |
| 140 | damage_box.y1 = 0; |
| 141 | if (damage_box.x2 > pScreen->width) |
| 142 | damage_box.x2 = pScreen->width; |
| 143 | if (damage_box.y2 > pScreen->height) |
| 144 | damage_box.y2 = pScreen->height; |
| 145 | RegionInit(&damage_region, &damage_box, 1); |
| 146 | DamageDamageRegion(&(*pScreen->GetScreenPixmap) (pScreen)->drawable, |
| 147 | &damage_region); |
| 148 | RegionUninit(&damage_region); |
| 149 | crtc->shadowClear = TRUE; |
| 150 | } |
| 151 | |
| 152 | static void |
| 153 | xf86RotatePrepare(ScreenPtr pScreen) |
| 154 | { |
| 155 | ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen); |
| 156 | xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn); |
| 157 | int c; |
| 158 | |
| 159 | for (c = 0; c < xf86_config->num_crtc; c++) { |
| 160 | xf86CrtcPtr crtc = xf86_config->crtc[c]; |
| 161 | |
| 162 | if (crtc->rotatedData && !crtc->rotatedPixmap) { |
| 163 | crtc->rotatedPixmap = crtc->funcs->shadow_create(crtc, |
| 164 | crtc->rotatedData, |
| 165 | crtc->mode. |
| 166 | HDisplay, |
| 167 | crtc->mode. |
| 168 | VDisplay); |
| 169 | if (!xf86_config->rotation_damage_registered) { |
| 170 | /* Hook damage to screen pixmap */ |
| 171 | DamageRegister(&pScreen->root->drawable, |
| 172 | xf86_config->rotation_damage); |
| 173 | xf86_config->rotation_damage_registered = TRUE; |
| 174 | EnableLimitedSchedulingLatency(); |
| 175 | } |
| 176 | |
| 177 | xf86CrtcDamageShadow(crtc); |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | static Bool |
| 183 | xf86RotateRedisplay(ScreenPtr pScreen) |
| 184 | { |
| 185 | ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen); |
| 186 | xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn); |
| 187 | DamagePtr damage = xf86_config->rotation_damage; |
| 188 | RegionPtr region; |
| 189 | |
| 190 | if (!damage) |
| 191 | return FALSE; |
| 192 | xf86RotatePrepare(pScreen); |
| 193 | region = DamageRegion(damage); |
| 194 | if (RegionNotEmpty(region)) { |
| 195 | int c; |
| 196 | SourceValidateProcPtr SourceValidate; |
| 197 | |
| 198 | /* |
| 199 | * SourceValidate is used by the software cursor code |
| 200 | * to pull the cursor off of the screen when reading |
| 201 | * bits from the frame buffer. Bypassing this function |
| 202 | * leaves the software cursor in place |
| 203 | */ |
| 204 | SourceValidate = pScreen->SourceValidate; |
| 205 | pScreen->SourceValidate = NULL; |
| 206 | |
| 207 | for (c = 0; c < xf86_config->num_crtc; c++) { |
| 208 | xf86CrtcPtr crtc = xf86_config->crtc[c]; |
| 209 | |
| 210 | if (crtc->transform_in_use && crtc->enabled) { |
| 211 | RegionRec crtc_damage; |
| 212 | |
| 213 | /* compute portion of damage that overlaps crtc */ |
| 214 | RegionInit(&crtc_damage, &crtc->bounds, 1); |
| 215 | RegionIntersect(&crtc_damage, &crtc_damage, region); |
| 216 | |
| 217 | /* update damaged region */ |
| 218 | if (RegionNotEmpty(&crtc_damage)) |
| 219 | xf86RotateCrtcRedisplay(crtc, &crtc_damage); |
| 220 | |
| 221 | RegionUninit(&crtc_damage); |
| 222 | } |
| 223 | } |
| 224 | pScreen->SourceValidate = SourceValidate; |
| 225 | DamageEmpty(damage); |
| 226 | } |
| 227 | return TRUE; |
| 228 | } |
| 229 | |
| 230 | static void |
| 231 | xf86RotateBlockHandler(ScreenPtr pScreen, |
| 232 | pointer pTimeout, pointer pReadmask) |
| 233 | { |
| 234 | ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen); |
| 235 | xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn); |
| 236 | Bool rotation_active; |
| 237 | |
| 238 | rotation_active = xf86RotateRedisplay(pScreen); |
| 239 | pScreen->BlockHandler = xf86_config->BlockHandler; |
| 240 | (*pScreen->BlockHandler) (pScreen, pTimeout, pReadmask); |
| 241 | /* cannot avoid re-wrapping until all wrapping is audited */ |
| 242 | xf86_config->BlockHandler = pScreen->BlockHandler; |
| 243 | pScreen->BlockHandler = xf86RotateBlockHandler; |
| 244 | } |
| 245 | |
| 246 | void |
| 247 | xf86RotateDestroy(xf86CrtcPtr crtc) |
| 248 | { |
| 249 | ScrnInfoPtr pScrn = crtc->scrn; |
| 250 | ScreenPtr pScreen = xf86ScrnToScreen(pScrn); |
| 251 | xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn); |
| 252 | int c; |
| 253 | |
| 254 | /* Free memory from rotation */ |
| 255 | if (crtc->rotatedPixmap || crtc->rotatedData) { |
| 256 | crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap, |
| 257 | crtc->rotatedData); |
| 258 | crtc->rotatedPixmap = NULL; |
| 259 | crtc->rotatedData = NULL; |
| 260 | } |
| 261 | |
| 262 | for (c = 0; c < xf86_config->num_crtc; c++) |
| 263 | if (xf86_config->crtc[c]->rotatedData) |
| 264 | return; |
| 265 | |
| 266 | /* |
| 267 | * Clean up damage structures when no crtcs are rotated |
| 268 | */ |
| 269 | if (xf86_config->rotation_damage) { |
| 270 | DrawablePtr screenDrawable = NULL; |
| 271 | if (pScreen && pScreen->root) |
| 272 | screenDrawable = &pScreen->root->drawable; |
| 273 | /* Free damage structure */ |
| 274 | if (xf86_config->rotation_damage_registered) { |
| 275 | xf86_config->rotation_damage_registered = FALSE; |
| 276 | DisableLimitedSchedulingLatency(); |
| 277 | } |
| 278 | DamageDestroy(xf86_config->rotation_damage); |
| 279 | xf86_config->rotation_damage = NULL; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | void |
| 284 | xf86RotateFreeShadow(ScrnInfoPtr pScrn) |
| 285 | { |
| 286 | xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn); |
| 287 | int c; |
| 288 | |
| 289 | for (c = 0; c < config->num_crtc; c++) { |
| 290 | xf86CrtcPtr crtc = config->crtc[c]; |
| 291 | |
| 292 | if (crtc->rotatedPixmap || crtc->rotatedData) { |
| 293 | crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap, |
| 294 | crtc->rotatedData); |
| 295 | crtc->rotatedPixmap = NULL; |
| 296 | crtc->rotatedData = NULL; |
| 297 | } |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | void |
| 302 | xf86RotateCloseScreen(ScreenPtr screen) |
| 303 | { |
| 304 | ScrnInfoPtr scrn = xf86ScreenToScrn(screen); |
| 305 | xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn); |
| 306 | int c; |
| 307 | |
| 308 | for (c = 0; c < xf86_config->num_crtc; c++) |
| 309 | xf86RotateDestroy(xf86_config->crtc[c]); |
| 310 | } |
| 311 | |
| 312 | static Bool |
| 313 | xf86CrtcFitsScreen(xf86CrtcPtr crtc, struct pict_f_transform *crtc_to_fb) |
| 314 | { |
| 315 | ScrnInfoPtr pScrn = crtc->scrn; |
| 316 | BoxRec b; |
| 317 | |
| 318 | /* When called before PreInit, the driver is |
| 319 | * presumably doing load detect |
| 320 | */ |
| 321 | if (pScrn->is_gpu) { |
| 322 | ScreenPtr pScreen = xf86ScrnToScreen(pScrn); |
| 323 | if (pScreen->current_master) |
| 324 | pScrn = xf86ScreenToScrn(pScreen->current_master); |
| 325 | } |
| 326 | |
| 327 | if (pScrn->virtualX == 0 || pScrn->virtualY == 0) |
| 328 | return TRUE; |
| 329 | |
| 330 | b.x1 = 0; |
| 331 | b.y1 = 0; |
| 332 | b.x2 = crtc->mode.HDisplay; |
| 333 | b.y2 = crtc->mode.VDisplay; |
| 334 | if (crtc_to_fb) |
| 335 | pixman_f_transform_bounds(crtc_to_fb, &b); |
| 336 | else { |
| 337 | b.x1 += crtc->x; |
| 338 | b.y1 += crtc->y; |
| 339 | b.x2 += crtc->x; |
| 340 | b.y2 += crtc->y; |
| 341 | } |
| 342 | |
| 343 | return (0 <= b.x1 && b.x2 <= pScrn->virtualX && |
| 344 | 0 <= b.y1 && b.y2 <= pScrn->virtualY); |
| 345 | } |
| 346 | |
| 347 | Bool |
| 348 | xf86CrtcRotate(xf86CrtcPtr crtc) |
| 349 | { |
| 350 | ScrnInfoPtr pScrn = crtc->scrn; |
| 351 | xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn); |
| 352 | ScreenPtr pScreen = xf86ScrnToScreen(pScrn); |
| 353 | PictTransform crtc_to_fb; |
| 354 | struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc; |
| 355 | xFixed *new_params = NULL; |
| 356 | int new_nparams = 0; |
| 357 | PictFilterPtr new_filter = NULL; |
| 358 | int new_width = 0; |
| 359 | int new_height = 0; |
| 360 | RRTransformPtr transform = NULL; |
| 361 | Bool damage = FALSE; |
| 362 | |
| 363 | if (crtc->transformPresent) |
| 364 | transform = &crtc->transform; |
| 365 | |
| 366 | if (!RRTransformCompute(crtc->x, crtc->y, |
| 367 | crtc->mode.HDisplay, crtc->mode.VDisplay, |
| 368 | crtc->rotation, |
| 369 | transform, |
| 370 | &crtc_to_fb, |
| 371 | &f_crtc_to_fb, |
| 372 | &f_fb_to_crtc) && |
| 373 | xf86CrtcFitsScreen(crtc, &f_crtc_to_fb)) { |
| 374 | /* |
| 375 | * If the untranslated transformation is the identity, |
| 376 | * disable the shadow buffer |
| 377 | */ |
| 378 | xf86RotateDestroy(crtc); |
| 379 | crtc->transform_in_use = FALSE; |
| 380 | free(new_params); |
| 381 | new_params = NULL; |
| 382 | new_nparams = 0; |
| 383 | new_filter = NULL; |
| 384 | new_width = 0; |
| 385 | new_height = 0; |
| 386 | } |
| 387 | else { |
| 388 | if (crtc->driverIsPerformingTransform) { |
| 389 | xf86RotateDestroy(crtc); |
| 390 | } |
| 391 | else { |
| 392 | /* |
| 393 | * these are the size of the shadow pixmap, which |
| 394 | * matches the mode, not the pre-rotated copy in the |
| 395 | * frame buffer |
| 396 | */ |
| 397 | int width = crtc->mode.HDisplay; |
| 398 | int height = crtc->mode.VDisplay; |
| 399 | void *shadowData = crtc->rotatedData; |
| 400 | PixmapPtr shadow = crtc->rotatedPixmap; |
| 401 | int old_width = shadow ? shadow->drawable.width : 0; |
| 402 | int old_height = shadow ? shadow->drawable.height : 0; |
| 403 | |
| 404 | /* Allocate memory for rotation */ |
| 405 | if (old_width != width || old_height != height) { |
| 406 | if (shadow || shadowData) { |
| 407 | crtc->funcs->shadow_destroy(crtc, shadow, shadowData); |
| 408 | crtc->rotatedPixmap = NULL; |
| 409 | crtc->rotatedData = NULL; |
| 410 | } |
| 411 | shadowData = crtc->funcs->shadow_allocate(crtc, width, height); |
| 412 | if (!shadowData) |
| 413 | goto bail1; |
| 414 | crtc->rotatedData = shadowData; |
| 415 | /* shadow will be damaged in xf86RotatePrepare */ |
| 416 | } |
| 417 | else { |
| 418 | /* mark shadowed area as damaged so it will be repainted */ |
| 419 | damage = TRUE; |
| 420 | } |
| 421 | |
| 422 | if (!xf86_config->rotation_damage) { |
| 423 | /* Create damage structure */ |
| 424 | xf86_config->rotation_damage = DamageCreate(NULL, NULL, |
| 425 | DamageReportNone, |
| 426 | TRUE, pScreen, |
| 427 | pScreen); |
| 428 | if (!xf86_config->rotation_damage) |
| 429 | goto bail2; |
| 430 | |
| 431 | /* Wrap block handler */ |
| 432 | if (!xf86_config->BlockHandler) { |
| 433 | xf86_config->BlockHandler = pScreen->BlockHandler; |
| 434 | pScreen->BlockHandler = xf86RotateBlockHandler; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | if (0) { |
| 439 | bail2: |
| 440 | if (shadow || shadowData) { |
| 441 | crtc->funcs->shadow_destroy(crtc, shadow, shadowData); |
| 442 | crtc->rotatedPixmap = NULL; |
| 443 | crtc->rotatedData = NULL; |
| 444 | } |
| 445 | bail1: |
| 446 | if (old_width && old_height) |
| 447 | crtc->rotatedPixmap = |
| 448 | crtc->funcs->shadow_create(crtc, NULL, old_width, |
| 449 | old_height); |
| 450 | return FALSE; |
| 451 | } |
| 452 | } |
| 453 | #ifdef RANDR_12_INTERFACE |
| 454 | if (transform) { |
| 455 | if (transform->nparams) { |
| 456 | new_params = malloc(transform->nparams * sizeof(xFixed)); |
| 457 | if (new_params) { |
| 458 | memcpy(new_params, transform->params, |
| 459 | transform->nparams * sizeof(xFixed)); |
| 460 | new_nparams = transform->nparams; |
| 461 | new_filter = transform->filter; |
| 462 | } |
| 463 | } |
| 464 | else |
| 465 | new_filter = transform->filter; |
| 466 | if (new_filter) { |
| 467 | new_width = new_filter->width; |
| 468 | new_height = new_filter->height; |
| 469 | } |
| 470 | } |
| 471 | #endif |
| 472 | crtc->transform_in_use = TRUE; |
| 473 | } |
| 474 | crtc->crtc_to_framebuffer = crtc_to_fb; |
| 475 | crtc->f_crtc_to_framebuffer = f_crtc_to_fb; |
| 476 | crtc->f_framebuffer_to_crtc = f_fb_to_crtc; |
| 477 | free(crtc->params); |
| 478 | crtc->params = new_params; |
| 479 | crtc->nparams = new_nparams; |
| 480 | crtc->filter = new_filter; |
| 481 | crtc->filter_width = new_width; |
| 482 | crtc->filter_height = new_height; |
| 483 | crtc->bounds.x1 = 0; |
| 484 | crtc->bounds.x2 = crtc->mode.HDisplay; |
| 485 | crtc->bounds.y1 = 0; |
| 486 | crtc->bounds.y2 = crtc->mode.VDisplay; |
| 487 | pixman_f_transform_bounds(&f_crtc_to_fb, &crtc->bounds); |
| 488 | |
| 489 | if (damage) |
| 490 | xf86CrtcDamageShadow(crtc); |
| 491 | |
| 492 | /* All done */ |
| 493 | return TRUE; |
| 494 | } |