exa/exa_mixed.c

   1 /*
   2  * Copyright © 2009 Maarten Maathuis
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  */
  24
  25 #include <dix-config.h>
  26
  27 #include <string.h>
  28
  29 #include "exa_priv.h"
  30 #include "exa.h"
  31
  32 /* This file holds the driver allocated pixmaps + better initial placement code.
  33  */
  34
  35 static inline void *
  36 ExaGetPixmapAddress(PixmapPtr p)
  37 {
  38     ExaPixmapPriv(p);
  39
  40     return pExaPixmap->sys_ptr;
  41 }
  42
  43 /**
  44  * exaCreatePixmap() creates a new pixmap.
  45  */
  46 PixmapPtr
  47 exaCreatePixmap_mixed(ScreenPtr pScreen, int w, int h, int depth,
  48                       unsigned usage_hint)
  49 {
  50     PixmapPtr pPixmap;
  51     ExaPixmapPrivPtr pExaPixmap;
  52     int bpp;
  53     size_t paddedWidth;
  54
  55     ExaScreenPriv(pScreen);
  56
  57     if (w > 32767 || h > 32767)
  58         return NullPixmap;
  59
  60     swap(pExaScr, pScreen, CreatePixmap);
  61     pPixmap = pScreen->CreatePixmap(pScreen, 0, 0, depth, usage_hint);
  62     swap(pExaScr, pScreen, CreatePixmap);
  63
  64     if (!pPixmap)
  65         return NULL;
  66
  67     pExaPixmap = ExaGetPixmapPriv(pPixmap);
  68     pExaPixmap->driverPriv = NULL;
  69
  70     bpp = pPixmap->drawable.bitsPerPixel;
  71
  72     paddedWidth = ((w * bpp + FB_MASK) >> FB_SHIFT) * sizeof(FbBits);
  73     if (paddedWidth / 4 > 32767)
  74         return NullPixmap;
  75
  76     /* We will allocate the system pixmap later if needed. */
  77     pPixmap->devPrivate.ptr = NULL;
  78     pExaPixmap->sys_ptr = NULL;
  79     pExaPixmap->sys_pitch = paddedWidth;
  80
  81     pExaPixmap->area = NULL;
  82     pExaPixmap->fb_ptr = NULL;
  83     pExaPixmap->pDamage = NULL;
  84
  85     exaSetFbPitch(pExaScr, pExaPixmap, w, h, bpp);
  86     exaSetAccelBlock(pExaScr, pExaPixmap, w, h, bpp);
  87
  88     (*pScreen->ModifyPixmapHeader) (pPixmap, w, h, 0, 0, paddedWidth, NULL);
  89
  90     /* A scratch pixmap will become a driver pixmap right away. */
  91     if (!w || !h) {
  92         exaCreateDriverPixmap_mixed(pPixmap);
  93         pExaPixmap->use_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
  94     }
  95     else {
  96         pExaPixmap->use_gpu_copy = FALSE;
  97
  98         if (w == 1 && h == 1) {
  99             pExaPixmap->sys_ptr = malloc(paddedWidth);
 100
 101             /* Set up damage tracking */
 102             pExaPixmap->pDamage = DamageCreate(exaDamageReport_mixed, NULL,
 103                                                DamageReportNonEmpty, TRUE,
 104                                                pPixmap->drawable.pScreen,
 105                                                pPixmap);
 106
 107             if (pExaPixmap->pDamage) {
 108                 DamageRegister(&pPixmap->drawable, pExaPixmap->pDamage);
 109                 /* This ensures that pending damage reflects the current
 110                  * operation. This is used by exa to optimize migration.
 111                  */
 112                 DamageSetReportAfterOp(pExaPixmap->pDamage, TRUE);
 113             }
 114         }
 115     }
 116
 117     /* During a fallback we must prepare access. */
 118     if (pExaScr->fallback_counter)
 119         exaPrepareAccess(&pPixmap->drawable, EXA_PREPARE_AUX_DEST);
 120
 121     return pPixmap;
 122 }
 123
 124 Bool
 125 exaModifyPixmapHeader_mixed(PixmapPtr pPixmap, int width, int height, int depth,
 126                             int bitsPerPixel, int devKind, void *pPixData)
 127 {
 128     ScreenPtr pScreen;
 129     ExaScreenPrivPtr pExaScr;
 130     ExaPixmapPrivPtr pExaPixmap;
 131     Bool ret, has_gpu_copy;
 132
 133     if (!pPixmap)
 134         return FALSE;
 135
 136     pScreen = pPixmap->drawable.pScreen;
 137     pExaScr = ExaGetScreenPriv(pScreen);
 138     pExaPixmap = ExaGetPixmapPriv(pPixmap);
 139
 140     if (pPixData) {
 141         if (pExaPixmap->driverPriv) {
 142             if (pExaPixmap->pDamage) {
 143                 DamageDestroy(pExaPixmap->pDamage);
 144                 pExaPixmap->pDamage = NULL;
 145             }
 146
 147             pExaScr->info->DestroyPixmap(pScreen, pExaPixmap->driverPriv);
 148             pExaPixmap->driverPriv = NULL;
 149         }
 150
 151         pExaPixmap->use_gpu_copy = FALSE;
 152         pExaPixmap->score = EXA_PIXMAP_SCORE_PINNED;
 153     }
 154
 155     has_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
 156
 157     if (width <= 0)
 158         width = pPixmap->drawable.width;
 159
 160     if (height <= 0)
 161         height = pPixmap->drawable.height;
 162
 163     if (bitsPerPixel <= 0) {
 164         if (depth <= 0)
 165             bitsPerPixel = pPixmap->drawable.bitsPerPixel;
 166         else
 167             bitsPerPixel = BitsPerPixel(depth);
 168     }
 169
 170     if (depth <= 0)
 171         depth = pPixmap->drawable.depth;
 172
 173     if (width != pPixmap->drawable.width ||
 174         height != pPixmap->drawable.height ||
 175         depth != pPixmap->drawable.depth ||
 176         bitsPerPixel != pPixmap->drawable.bitsPerPixel) {
 177         if (pExaPixmap->driverPriv) {
 178             if (devKind > 0)
 179                 pExaPixmap->fb_pitch = devKind;
 180             else
 181                 exaSetFbPitch(pExaScr, pExaPixmap, width, height, bitsPerPixel);
 182
 183             exaSetAccelBlock(pExaScr, pExaPixmap, width, height, bitsPerPixel);
 184             RegionEmpty(&pExaPixmap->validFB);
 185         }
 186
 187         /* Need to re-create system copy if there's also a GPU copy */
 188         if (has_gpu_copy) {
 189             if (pExaPixmap->sys_ptr) {
 190                 free(pExaPixmap->sys_ptr);
 191                 pExaPixmap->sys_ptr = NULL;
 192                 DamageDestroy(pExaPixmap->pDamage);
 193                 pExaPixmap->pDamage = NULL;
 194                 RegionEmpty(&pExaPixmap->validSys);
 195
 196                 if (pExaScr->deferred_mixed_pixmap == pPixmap)
 197                     pExaScr->deferred_mixed_pixmap = NULL;
 198             }
 199
 200             pExaPixmap->sys_pitch = PixmapBytePad(width, depth);
 201         }
 202     }
 203
 204     if (has_gpu_copy) {
 205         pPixmap->devPrivate.ptr = pExaPixmap->fb_ptr;
 206         pPixmap->devKind = pExaPixmap->fb_pitch;
 207     }
 208     else {
 209         pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
 210         pPixmap->devKind = pExaPixmap->sys_pitch;
 211     }
 212
 213     /* Only pass driver pixmaps to the driver. */
 214     if (pExaScr->info->ModifyPixmapHeader && pExaPixmap->driverPriv) {
 215         ret = pExaScr->info->ModifyPixmapHeader(pPixmap, width, height, depth,
 216                                                 bitsPerPixel, devKind,
 217                                                 pPixData);
 218         if (ret == TRUE)
 219             goto out;
 220     }
 221
 222     swap(pExaScr, pScreen, ModifyPixmapHeader);
 223     ret = pScreen->ModifyPixmapHeader(pPixmap, width, height, depth,
 224                                       bitsPerPixel, devKind, pPixData);
 225     swap(pExaScr, pScreen, ModifyPixmapHeader);
 226
 227  out:
 228     if (has_gpu_copy) {
 229         pExaPixmap->fb_ptr = pPixmap->devPrivate.ptr;
 230         pExaPixmap->fb_pitch = pPixmap->devKind;
 231     }
 232     else {
 233         pExaPixmap->sys_ptr = pPixmap->devPrivate.ptr;
 234         pExaPixmap->sys_pitch = pPixmap->devKind;
 235     }
 236     /* Always NULL this, we don't want lingering pointers. */
 237     pPixmap->devPrivate.ptr = NULL;
 238
 239     return ret;
 240 }
 241
 242 Bool
 243 exaDestroyPixmap_mixed(PixmapPtr pPixmap)
 244 {
 245     ScreenPtr pScreen = pPixmap->drawable.pScreen;
 246
 247     ExaScreenPriv(pScreen);
 248     Bool ret;
 249
 250     if (pPixmap->refcnt == 1) {
 251         ExaPixmapPriv(pPixmap);
 252
 253         exaDestroyPixmap(pPixmap);
 254
 255         if (pExaScr->deferred_mixed_pixmap == pPixmap)
 256             pExaScr->deferred_mixed_pixmap = NULL;
 257
 258         if (pExaPixmap->driverPriv)
 259             pExaScr->info->DestroyPixmap(pScreen, pExaPixmap->driverPriv);
 260         pExaPixmap->driverPriv = NULL;
 261
 262         if (pExaPixmap->pDamage) {
 263             free(pExaPixmap->sys_ptr);
 264             pExaPixmap->sys_ptr = NULL;
 265             pExaPixmap->pDamage = NULL;
 266         }
 267     }
 268
 269     swap(pExaScr, pScreen, DestroyPixmap);
 270     ret = pScreen->DestroyPixmap(pPixmap);
 271     swap(pExaScr, pScreen, DestroyPixmap);
 272
 273     return ret;
 274 }
 275
 276 Bool
 277 exaPixmapHasGpuCopy_mixed(PixmapPtr pPixmap)
 278 {
 279     ScreenPtr pScreen = pPixmap->drawable.pScreen;
 280
 281     ExaScreenPriv(pScreen);
 282     ExaPixmapPriv(pPixmap);
 283     void *saved_ptr;
 284     Bool ret;
 285
 286     if (!pExaPixmap->driverPriv)
 287         return FALSE;
 288
 289     saved_ptr = pPixmap->devPrivate.ptr;
 290     pPixmap->devPrivate.ptr = ExaGetPixmapAddress(pPixmap);
 291     ret = pExaScr->info->PixmapIsOffscreen(pPixmap);
 292     pPixmap->devPrivate.ptr = saved_ptr;
 293
 294     return ret;
 295 }
 296
 297 Bool
 298 exaSharePixmapBacking_mixed(PixmapPtr pPixmap, ScreenPtr secondary, void **handle_p)
 299 {
 300     ScreenPtr pScreen = pPixmap->drawable.pScreen;
 301     ExaScreenPriv(pScreen);
 302     Bool ret = FALSE;
 303
 304     exaMoveInPixmap(pPixmap);
 305     /* get the driver to give us a handle */
 306     if (pExaScr->info->SharePixmapBacking)
 307         ret = pExaScr->info->SharePixmapBacking(pPixmap, secondary, handle_p);
 308
 309     return ret;
 310 }
 311
 312 Bool
 313 exaSetSharedPixmapBacking_mixed(PixmapPtr pPixmap, void *handle)
 314 {
 315     ScreenPtr pScreen = pPixmap->drawable.pScreen;
 316     ExaScreenPriv(pScreen);
 317     Bool ret = FALSE;
 318
 319     if (pExaScr->info->SetSharedPixmapBacking)
 320         ret = pExaScr->info->SetSharedPixmapBacking(pPixmap, handle);
 321
 322     if (ret == TRUE)
 323         exaMoveInPixmap(pPixmap);
 324
 325     return ret;
 326 }