Edit
IABSD.fr/xenocara/xserver/exa/exa_migration_mixed.c
matthieu
- xserver/exa/exa_migration_mixed.c
-
/* * Copyright © 2009 Maarten Maathuis * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include <string.h> #include "exa_priv.h" #include "exa.h" void exaCreateDriverPixmap_mixed(PixmapPtr pPixmap) { ScreenPtr pScreen = pPixmap->drawable.pScreen; ExaScreenPriv(pScreen); ExaPixmapPriv(pPixmap); int w = pPixmap->drawable.width, h = pPixmap->drawable.height; int depth = pPixmap->drawable.depth, bpp = pPixmap->drawable.bitsPerPixel; int usage_hint = pPixmap->usage_hint; int paddedWidth = pExaPixmap->sys_pitch; /* Already done. */ if (pExaPixmap->driverPriv) return; if (exaPixmapIsPinned(pPixmap)) return; /* Can't accel 1/4 bpp. */ if (pExaPixmap->accel_blocked || bpp < 8) return; if (pExaScr->info->CreatePixmap2) { int new_pitch = 0; pExaPixmap->driverPriv = pExaScr->info->CreatePixmap2(pScreen, w, h, depth, usage_hint, bpp, &new_pitch); paddedWidth = pExaPixmap->fb_pitch = new_pitch; } else { if (paddedWidth < pExaPixmap->fb_pitch) paddedWidth = pExaPixmap->fb_pitch; pExaPixmap->driverPriv = pExaScr->info->CreatePixmap(pScreen, paddedWidth * h, 0); } if (!pExaPixmap->driverPriv) return; (*pScreen->ModifyPixmapHeader) (pPixmap, w, h, 0, 0, paddedWidth, NULL); } void exaDoMigration_mixed(ExaMigrationPtr pixmaps, int npixmaps, Bool can_accel) { int i; /* If anything is pinned in system memory, we won't be able to * accelerate. */ for (i = 0; i < npixmaps; i++) { if (exaPixmapIsPinned(pixmaps[i].pPix) && !exaPixmapHasGpuCopy(pixmaps[i].pPix)) { can_accel = FALSE; break; } } /* We can do nothing. */ if (!can_accel) return; for (i = 0; i < npixmaps; i++) { PixmapPtr pPixmap = pixmaps[i].pPix; ExaPixmapPriv(pPixmap); if (!pExaPixmap->driverPriv) exaCreateDriverPixmap_mixed(pPixmap); if (pExaPixmap->pDamage && exaPixmapHasGpuCopy(pPixmap)) { ExaScreenPriv(pPixmap->drawable.pScreen); /* This pitch is needed for proper acceleration. For some reason * there are pixmaps without pDamage and a bad fb_pitch value. * So setting devKind when only exaPixmapHasGpuCopy() is true * causes corruption. Pixmaps without pDamage are not migrated * and should have a valid devKind at all times, so that's why this * isn't causing problems. Pixmaps have their gpu pitch set the * first time in the MPH call from exaCreateDriverPixmap_mixed(). */ pPixmap->devKind = pExaPixmap->fb_pitch; exaCopyDirtyToFb(pixmaps + i); if (pExaScr->deferred_mixed_pixmap == pPixmap && !pixmaps[i].as_dst && !pixmaps[i].pReg) pExaScr->deferred_mixed_pixmap = NULL; } pExaPixmap->use_gpu_copy = exaPixmapHasGpuCopy(pPixmap); } } void exaMoveInPixmap_mixed(PixmapPtr pPixmap) { ExaMigrationRec pixmaps[1]; pixmaps[0].as_dst = FALSE; pixmaps[0].as_src = TRUE; pixmaps[0].pPix = pPixmap; pixmaps[0].pReg = NULL; exaDoMigration(pixmaps, 1, TRUE); } void exaDamageReport_mixed(DamagePtr pDamage, RegionPtr pRegion, void *closure) { PixmapPtr pPixmap = closure; ExaPixmapPriv(pPixmap); /* Move back results of software rendering on system memory copy of mixed driver * pixmap (see exaPrepareAccessReg_mixed). * * Defer moving the destination back into the driver pixmap, to try and save * overhead on multiple subsequent software fallbacks. */ if (!pExaPixmap->use_gpu_copy && exaPixmapHasGpuCopy(pPixmap)) { ExaScreenPriv(pPixmap->drawable.pScreen); if (pExaScr->deferred_mixed_pixmap && pExaScr->deferred_mixed_pixmap != pPixmap) exaMoveInPixmap_mixed(pExaScr->deferred_mixed_pixmap); pExaScr->deferred_mixed_pixmap = pPixmap; } } /* With mixed pixmaps, if we fail to get direct access to the driver pixmap, we * use the DownloadFromScreen hook to retrieve contents to a copy in system * memory, perform software rendering on that and move back the results with the * UploadToScreen hook (see exaDamageReport_mixed). */ void exaPrepareAccessReg_mixed(PixmapPtr pPixmap, int index, RegionPtr pReg) { ExaPixmapPriv(pPixmap); Bool has_gpu_copy = exaPixmapHasGpuCopy(pPixmap); Bool success; success = ExaDoPrepareAccess(pPixmap, index); if (success && has_gpu_copy && pExaPixmap->pDamage) { /* You cannot do accelerated operations while a buffer is mapped. */ exaFinishAccess(&pPixmap->drawable, index); /* Update the gpu view of both deferred destination pixmaps and of * source pixmaps that were migrated with a bounding region. */ exaMoveInPixmap_mixed(pPixmap); success = ExaDoPrepareAccess(pPixmap, index); if (success) { /* We have a gpu pixmap that can be accessed, we don't need the cpu * copy anymore. Drivers that prefer DFS, should fail prepare * access. */ DamageDestroy(pExaPixmap->pDamage); pExaPixmap->pDamage = NULL; free(pExaPixmap->sys_ptr); pExaPixmap->sys_ptr = NULL; return; } } if (!success) { ExaMigrationRec pixmaps[1]; /* Do we need to allocate our system buffer? */ if (!pExaPixmap->sys_ptr) { pExaPixmap->sys_ptr = xallocarray(pExaPixmap->sys_pitch, pPixmap->drawable.height); if (!pExaPixmap->sys_ptr) FatalError("EXA: malloc failed for size %d bytes\n", pExaPixmap->sys_pitch * pPixmap->drawable.height); } if (index == EXA_PREPARE_DEST || index == EXA_PREPARE_AUX_DEST) { pixmaps[0].as_dst = TRUE; pixmaps[0].as_src = FALSE; } else { pixmaps[0].as_dst = FALSE; pixmaps[0].as_src = TRUE; } pixmaps[0].pPix = pPixmap; pixmaps[0].pReg = pReg; if (!pExaPixmap->pDamage && (has_gpu_copy || !exaPixmapIsPinned(pPixmap))) { Bool as_dst = pixmaps[0].as_dst; /* Set up damage tracking */ pExaPixmap->pDamage = DamageCreate(exaDamageReport_mixed, NULL, DamageReportNonEmpty, TRUE, pPixmap->drawable.pScreen, pPixmap); if (pExaPixmap->pDamage) { DamageRegister(&pPixmap->drawable, pExaPixmap->pDamage); /* This ensures that pending damage reflects the current * operation. This is used by exa to optimize migration. */ DamageSetReportAfterOp(pExaPixmap->pDamage, TRUE); } if (has_gpu_copy) { exaPixmapDirty(pPixmap, 0, 0, pPixmap->drawable.width, pPixmap->drawable.height); /* We don't know which region of the destination will be damaged, * have to assume all of it */ if (as_dst) { pixmaps[0].as_dst = FALSE; pixmaps[0].as_src = TRUE; pixmaps[0].pReg = NULL; } exaCopyDirtyToSys(pixmaps); } if (as_dst) exaPixmapDirty(pPixmap, 0, 0, pPixmap->drawable.width, pPixmap->drawable.height); } else if (has_gpu_copy) exaCopyDirtyToSys(pixmaps); pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr; pPixmap->devKind = pExaPixmap->sys_pitch; pExaPixmap->use_gpu_copy = FALSE; } }