Edit
IABSD.fr/xenocara/xserver/dix/pixmap.c
matthieu
- xserver/dix/pixmap.c
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/* Copyright 1993, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. The above copyright notice and this permission notice 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 OPEN GROUP 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. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include <X11/X.h> #include "scrnintstr.h" #include "mi.h" #include "misc.h" #include "os.h" #include "windowstr.h" #include "resource.h" #include "dixstruct.h" #include "gcstruct.h" #include "servermd.h" #include "X11/extensions/render.h" #include "picturestr.h" #include "randrstr.h" /* * Scratch pixmap management and device independent pixmap allocation * function. */ /* callable by ddx */ PixmapPtr GetScratchPixmapHeader(ScreenPtr pScreen, int width, int height, int depth, int bitsPerPixel, int devKind, void *pPixData) { PixmapPtr pPixmap = pScreen->pScratchPixmap; if (pPixmap) pScreen->pScratchPixmap = NULL; else /* width and height of 0 means don't allocate any pixmap data */ pPixmap = (*pScreen->CreatePixmap) (pScreen, 0, 0, depth, 0); if (pPixmap) { if ((*pScreen->ModifyPixmapHeader) (pPixmap, width, height, depth, bitsPerPixel, devKind, pPixData)) return pPixmap; (*pScreen->DestroyPixmap) (pPixmap); } return NullPixmap; } /* callable by ddx */ void FreeScratchPixmapHeader(PixmapPtr pPixmap) { if (pPixmap) { ScreenPtr pScreen = pPixmap->drawable.pScreen; pPixmap->devPrivate.ptr = NULL; /* lest ddx chases bad ptr */ if (pScreen->pScratchPixmap) (*pScreen->DestroyPixmap) (pPixmap); else pScreen->pScratchPixmap = pPixmap; } } Bool CreateScratchPixmapsForScreen(ScreenPtr pScreen) { unsigned int pixmap_size; pixmap_size = sizeof(PixmapRec) + dixScreenSpecificPrivatesSize(pScreen, PRIVATE_PIXMAP); pScreen->totalPixmapSize = BitmapBytePad(pixmap_size * 8); /* let it be created on first use */ pScreen->pScratchPixmap = NULL; return TRUE; } void FreeScratchPixmapsForScreen(ScreenPtr pScreen) { FreeScratchPixmapHeader(pScreen->pScratchPixmap); } /* callable by ddx */ PixmapPtr AllocatePixmap(ScreenPtr pScreen, int pixDataSize) { PixmapPtr pPixmap; assert(pScreen->totalPixmapSize > 0); if (pScreen->totalPixmapSize > ((size_t) - 1) - pixDataSize) return NullPixmap; pPixmap = calloc(1, pScreen->totalPixmapSize + pixDataSize); if (!pPixmap) return NullPixmap; dixInitScreenPrivates(pScreen, pPixmap, pPixmap + 1, PRIVATE_PIXMAP); return pPixmap; } /* callable by ddx */ void FreePixmap(PixmapPtr pPixmap) { dixFiniPrivates(pPixmap, PRIVATE_PIXMAP); free(pPixmap); } void PixmapUnshareSecondaryPixmap(PixmapPtr secondary_pixmap) { int ihandle = -1; ScreenPtr pScreen = secondary_pixmap->drawable.pScreen; pScreen->SetSharedPixmapBacking(secondary_pixmap, ((void *)(long)ihandle)); } PixmapPtr PixmapShareToSecondary(PixmapPtr pixmap, ScreenPtr secondary) { PixmapPtr spix; int ret; void *handle; ScreenPtr primary = pixmap->drawable.pScreen; int depth = pixmap->drawable.depth; ret = primary->SharePixmapBacking(pixmap, secondary, &handle); if (ret == FALSE) return NULL; spix = secondary->CreatePixmap(secondary, 0, 0, depth, CREATE_PIXMAP_USAGE_SHARED); secondary->ModifyPixmapHeader(spix, pixmap->drawable.width, pixmap->drawable.height, depth, 0, pixmap->devKind, NULL); /* have the secondary pixmap take a reference on the primary pixmap later we destroy them both at the same time */ pixmap->refcnt++; spix->primary_pixmap = pixmap; ret = secondary->SetSharedPixmapBacking(spix, handle); if (ret == FALSE) { secondary->DestroyPixmap(spix); return NULL; } return spix; } static void PixmapDirtyDamageDestroy(DamagePtr damage, void *closure) { PixmapDirtyUpdatePtr dirty = closure; dirty->damage = NULL; } Bool PixmapStartDirtyTracking(DrawablePtr src, PixmapPtr secondary_dst, int x, int y, int dst_x, int dst_y, Rotation rotation) { ScreenPtr screen = src->pScreen; PixmapDirtyUpdatePtr dirty_update; RegionPtr damageregion; RegionRec dstregion; BoxRec box; dirty_update = calloc(1, sizeof(PixmapDirtyUpdateRec)); if (!dirty_update) return FALSE; dirty_update->src = src; dirty_update->secondary_dst = secondary_dst; dirty_update->x = x; dirty_update->y = y; dirty_update->dst_x = dst_x; dirty_update->dst_y = dst_y; dirty_update->rotation = rotation; dirty_update->damage = DamageCreate(NULL, PixmapDirtyDamageDestroy, DamageReportNone, TRUE, screen, dirty_update); if (rotation != RR_Rotate_0) { RRTransformCompute(x, y, secondary_dst->drawable.width, secondary_dst->drawable.height, rotation, NULL, &dirty_update->transform, &dirty_update->f_transform, &dirty_update->f_inverse); } if (!dirty_update->damage) { free(dirty_update); return FALSE; } /* Damage destination rectangle so that the destination pixmap contents * will get fully initialized */ box.x1 = dirty_update->x; box.y1 = dirty_update->y; if (dirty_update->rotation == RR_Rotate_90 || dirty_update->rotation == RR_Rotate_270) { box.x2 = dirty_update->x + secondary_dst->drawable.height; box.y2 = dirty_update->y + secondary_dst->drawable.width; } else { box.x2 = dirty_update->x + secondary_dst->drawable.width; box.y2 = dirty_update->y + secondary_dst->drawable.height; } RegionInit(&dstregion, &box, 1); damageregion = DamageRegion(dirty_update->damage); RegionUnion(damageregion, damageregion, &dstregion); RegionUninit(&dstregion); DamageRegister(src, dirty_update->damage); xorg_list_add(&dirty_update->ent, &screen->pixmap_dirty_list); return TRUE; } Bool PixmapStopDirtyTracking(DrawablePtr src, PixmapPtr secondary_dst) { ScreenPtr screen = src->pScreen; PixmapDirtyUpdatePtr ent, safe; xorg_list_for_each_entry_safe(ent, safe, &screen->pixmap_dirty_list, ent) { if (ent->src == src && ent->secondary_dst == secondary_dst) { if (ent->damage) DamageDestroy(ent->damage); xorg_list_del(&ent->ent); free(ent); } } return TRUE; } void PixmapDirtyCopyArea(PixmapPtr dst, DrawablePtr src, int x, int y, int dst_x, int dst_y, RegionPtr dirty_region) { ScreenPtr pScreen = src->pScreen; int n; BoxPtr b; GCPtr pGC; n = RegionNumRects(dirty_region); b = RegionRects(dirty_region); pGC = GetScratchGC(src->depth, pScreen); if (pScreen->root) { ChangeGCVal subWindowMode; subWindowMode.val = IncludeInferiors; ChangeGC(NullClient, pGC, GCSubwindowMode, &subWindowMode); } ValidateGC(&dst->drawable, pGC); while (n--) { BoxRec dst_box; int w, h; dst_box = *b; w = dst_box.x2 - dst_box.x1; h = dst_box.y2 - dst_box.y1; (void) pGC->ops->CopyArea(src, &dst->drawable, pGC, x + dst_box.x1, y + dst_box.y1, w, h, dst_x + dst_box.x1, dst_y + dst_box.y1); b++; } FreeScratchGC(pGC); } static void PixmapDirtyCompositeRotate(PixmapPtr dst_pixmap, PixmapDirtyUpdatePtr dirty, RegionPtr dirty_region) { ScreenPtr pScreen = dirty->src->pScreen; PictFormatPtr format = PictureWindowFormat(pScreen->root); PicturePtr src, dst; XID include_inferiors = IncludeInferiors; int n = RegionNumRects(dirty_region); BoxPtr b = RegionRects(dirty_region); int error; src = CreatePicture(None, dirty->src, format, CPSubwindowMode, &include_inferiors, serverClient, &error); if (!src) return; dst = CreatePicture(None, &dst_pixmap->drawable, format, 0L, NULL, serverClient, &error); if (!dst) return; error = SetPictureTransform(src, &dirty->transform); if (error) return; while (n--) { BoxRec dst_box; dst_box = *b; dst_box.x1 += dirty->x; dst_box.x2 += dirty->x; dst_box.y1 += dirty->y; dst_box.y2 += dirty->y; pixman_f_transform_bounds(&dirty->f_inverse, &dst_box); CompositePicture(PictOpSrc, src, NULL, dst, dst_box.x1, dst_box.y1, 0, 0, dst_box.x1, dst_box.y1, dst_box.x2 - dst_box.x1, dst_box.y2 - dst_box.y1); b++; } FreePicture(src, None); FreePicture(dst, None); } /* * this function can possibly be improved and optimised, by clipping * instead of iterating * Drivers are free to implement their own version of this. */ Bool PixmapSyncDirtyHelper(PixmapDirtyUpdatePtr dirty) { ScreenPtr pScreen = dirty->src->pScreen; RegionPtr region = DamageRegion(dirty->damage); PixmapPtr dst; SourceValidateProcPtr SourceValidate; RegionRec pixregion; BoxRec box; dst = dirty->secondary_dst->primary_pixmap; if (!dst) dst = dirty->secondary_dst; box.x1 = 0; box.y1 = 0; if (dirty->rotation == RR_Rotate_90 || dirty->rotation == RR_Rotate_270) { box.x2 = dst->drawable.height; box.y2 = dst->drawable.width; } else { box.x2 = dst->drawable.width; box.y2 = dst->drawable.height; } RegionInit(&pixregion, &box, 1); /* * SourceValidate is used by the software cursor code * to pull the cursor off of the screen when reading * bits from the frame buffer. Bypassing this function * leaves the software cursor in place */ SourceValidate = pScreen->SourceValidate; pScreen->SourceValidate = miSourceValidate; RegionTranslate(&pixregion, dirty->x, dirty->y); RegionIntersect(&pixregion, &pixregion, region); if (RegionNil(&pixregion)) { RegionUninit(&pixregion); return FALSE; } RegionTranslate(&pixregion, -dirty->x, -dirty->y); if (!pScreen->root || dirty->rotation == RR_Rotate_0) PixmapDirtyCopyArea(dst, dirty->src, dirty->x, dirty->y, dirty->dst_x, dirty->dst_y, &pixregion); else PixmapDirtyCompositeRotate(dst, dirty, &pixregion); pScreen->SourceValidate = SourceValidate; return TRUE; }