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-rw-r--r--xorg-server/exa/exa.c2258
-rw-r--r--xorg-server/exa/exa_accel.c18
-rw-r--r--xorg-server/exa/exa_glyphs.c1734
-rw-r--r--xorg-server/exa/exa_offscreen.c1392
4 files changed, 2701 insertions, 2701 deletions
diff --git a/xorg-server/exa/exa.c b/xorg-server/exa/exa.c
index da3797237..c16870e5d 100644
--- a/xorg-server/exa/exa.c
+++ b/xorg-server/exa/exa.c
@@ -1,1129 +1,1129 @@
-/*
- * Copyright © 2001 Keith Packard
- *
- * Partly based on code that is Copyright © The XFree86 Project Inc.
- *
- * 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, and that the name of Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-/** @file
- * This file covers the initialization and teardown of EXA, and has various
- * functions not responsible for performing rendering, pixmap migration, or
- * memory management.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdlib.h>
-
-#include "exa_priv.h"
-#include "exa.h"
-
-static int exaScreenPrivateKeyIndex;
-DevPrivateKey exaScreenPrivateKey = &exaScreenPrivateKeyIndex;
-static int exaPixmapPrivateKeyIndex;
-DevPrivateKey exaPixmapPrivateKey = &exaPixmapPrivateKeyIndex;
-static int exaGCPrivateKeyIndex;
-DevPrivateKey exaGCPrivateKey = &exaGCPrivateKeyIndex;
-
-#ifdef MITSHM
-static ShmFuncs exaShmFuncs = { NULL, NULL };
-#endif
-
-/**
- * exaGetPixmapOffset() returns the offset (in bytes) within the framebuffer of
- * the beginning of the given pixmap.
- *
- * Note that drivers are free to, and often do, munge this offset as necessary
- * for handing to the hardware -- for example, translating it into a different
- * aperture. This function may need to be extended in the future if we grow
- * support for having multiple card-accessible offscreen, such as an AGP memory
- * pool alongside the framebuffer pool.
- */
-unsigned long
-exaGetPixmapOffset(PixmapPtr pPix)
-{
- ExaScreenPriv (pPix->drawable.pScreen);
- ExaPixmapPriv (pPix);
-
- return (CARD8 *)pExaPixmap->fb_ptr - pExaScr->info->memoryBase;
-}
-
-void *
-exaGetPixmapDriverPrivate(PixmapPtr pPix)
-{
- ExaPixmapPriv(pPix);
-
- return pExaPixmap->driverPriv;
-}
-
-/**
- * exaGetPixmapPitch() returns the pitch (in bytes) of the given pixmap.
- *
- * This is a helper to make driver code more obvious, due to the rather obscure
- * naming of the pitch field in the pixmap.
- */
-unsigned long
-exaGetPixmapPitch(PixmapPtr pPix)
-{
- return pPix->devKind;
-}
-
-/**
- * exaGetPixmapSize() returns the size in bytes of the given pixmap in video
- * memory. Only valid when the pixmap is currently in framebuffer.
- */
-unsigned long
-exaGetPixmapSize(PixmapPtr pPix)
-{
- ExaPixmapPrivPtr pExaPixmap;
-
- pExaPixmap = ExaGetPixmapPriv(pPix);
- if (pExaPixmap != NULL)
- return pExaPixmap->fb_size;
- return 0;
-}
-
-/**
- * exaGetDrawablePixmap() returns a backing pixmap for a given drawable.
- *
- * @param pDrawable the drawable being requested.
- *
- * This function returns the backing pixmap for a drawable, whether it is a
- * redirected window, unredirected window, or already a pixmap. Note that
- * coordinate translation is needed when drawing to the backing pixmap of a
- * redirected window, and the translation coordinates are provided by calling
- * exaGetOffscreenPixmap() on the drawable.
- */
-PixmapPtr
-exaGetDrawablePixmap(DrawablePtr pDrawable)
-{
- if (pDrawable->type == DRAWABLE_WINDOW)
- return pDrawable->pScreen->GetWindowPixmap ((WindowPtr) pDrawable);
- else
- return (PixmapPtr) pDrawable;
-}
-
-/**
- * Sets the offsets to add to coordinates to make them address the same bits in
- * the backing drawable. These coordinates are nonzero only for redirected
- * windows.
- */
-void
-exaGetDrawableDeltas (DrawablePtr pDrawable, PixmapPtr pPixmap,
- int *xp, int *yp)
-{
-#ifdef COMPOSITE
- if (pDrawable->type == DRAWABLE_WINDOW) {
- *xp = -pPixmap->screen_x;
- *yp = -pPixmap->screen_y;
- return;
- }
-#endif
-
- *xp = 0;
- *yp = 0;
-}
-
-/**
- * exaPixmapDirty() marks a pixmap as dirty, allowing for
- * optimizations in pixmap migration when no changes have occurred.
- */
-void
-exaPixmapDirty (PixmapPtr pPix, int x1, int y1, int x2, int y2)
-{
- BoxRec box;
- RegionRec region;
-
- box.x1 = max(x1, 0);
- box.y1 = max(y1, 0);
- box.x2 = min(x2, pPix->drawable.width);
- box.y2 = min(y2, pPix->drawable.height);
-
- if (box.x1 >= box.x2 || box.y1 >= box.y2)
- return;
-
- REGION_INIT(pScreen, &region, &box, 1);
- DamageRegionAppend(&pPix->drawable, &region);
- DamageRegionProcessPending(&pPix->drawable);
- REGION_UNINIT(pScreen, &region);
-}
-
-static int
-exaLog2(int val)
-{
- int bits;
-
- if (val <= 0)
- return 0;
- for (bits = 0; val != 0; bits++)
- val >>= 1;
- return bits - 1;
-}
-
-void
-exaSetAccelBlock(ExaScreenPrivPtr pExaScr, ExaPixmapPrivPtr pExaPixmap,
- int w, int h, int bpp)
-{
- pExaPixmap->accel_blocked = 0;
-
- if (pExaScr->info->maxPitchPixels) {
- int max_pitch = pExaScr->info->maxPitchPixels * bits_to_bytes(bpp);
-
- if (pExaPixmap->fb_pitch > max_pitch)
- pExaPixmap->accel_blocked |= EXA_RANGE_PITCH;
- }
-
- if (pExaScr->info->maxPitchBytes &&
- pExaPixmap->fb_pitch > pExaScr->info->maxPitchBytes)
- pExaPixmap->accel_blocked |= EXA_RANGE_PITCH;
-
- if (w > pExaScr->info->maxX)
- pExaPixmap->accel_blocked |= EXA_RANGE_WIDTH;
-
- if (h > pExaScr->info->maxY)
- pExaPixmap->accel_blocked |= EXA_RANGE_HEIGHT;
-}
-
-void
-exaSetFbPitch(ExaScreenPrivPtr pExaScr, ExaPixmapPrivPtr pExaPixmap,
- int w, int h, int bpp)
-{
- if (pExaScr->info->flags & EXA_OFFSCREEN_ALIGN_POT && w != 1)
- pExaPixmap->fb_pitch = bits_to_bytes((1 << (exaLog2(w - 1) + 1)) * bpp);
- else
- pExaPixmap->fb_pitch = bits_to_bytes(w * bpp);
-
- pExaPixmap->fb_pitch = EXA_ALIGN(pExaPixmap->fb_pitch,
- pExaScr->info->pixmapPitchAlign);
-}
-
-/**
- * Returns TRUE if the pixmap is not movable. This is the case where it's a
- * pixmap which has no private (almost always bad) or it's a scratch pixmap created by
- * some X Server internal component (the score says it's pinned).
- */
-Bool
-exaPixmapIsPinned (PixmapPtr pPix)
-{
- ExaPixmapPriv (pPix);
-
- if (pExaPixmap == NULL)
- EXA_FatalErrorDebugWithRet(("EXA bug: exaPixmapIsPinned was called on a non-exa pixmap.\n"), TRUE);
-
- return pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED;
-}
-
-/**
- * exaPixmapHasGpuCopy() is used to determine if a pixmap is in offscreen
- * memory, meaning that acceleration could probably be done to it, and that it
- * will need to be wrapped by PrepareAccess()/FinishAccess() when accessing it
- * with the CPU.
- *
- * Note that except for UploadToScreen()/DownloadFromScreen() (which explicitly
- * deal with moving pixmaps in and out of system memory), EXA will give drivers
- * pixmaps as arguments for which exaPixmapHasGpuCopy() is TRUE.
- *
- * @return TRUE if the given drawable is in framebuffer memory.
- */
-Bool
-exaPixmapHasGpuCopy(PixmapPtr pPixmap)
-{
- ScreenPtr pScreen = pPixmap->drawable.pScreen;
- ExaScreenPriv(pScreen);
-
- if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
- return FALSE;
-
- return (*pExaScr->pixmap_has_gpu_copy)(pPixmap);
-}
-
-/**
- * exaDrawableIsOffscreen() is a convenience wrapper for exaPixmapHasGpuCopy().
- */
-Bool
-exaDrawableIsOffscreen (DrawablePtr pDrawable)
-{
- return exaPixmapHasGpuCopy (exaGetDrawablePixmap (pDrawable));
-}
-
-/**
- * Returns the pixmap which backs a drawable, and the offsets to add to
- * coordinates to make them address the same bits in the backing drawable.
- */
-PixmapPtr
-exaGetOffscreenPixmap (DrawablePtr pDrawable, int *xp, int *yp)
-{
- PixmapPtr pPixmap = exaGetDrawablePixmap (pDrawable);
-
- exaGetDrawableDeltas (pDrawable, pPixmap, xp, yp);
-
- if (exaPixmapHasGpuCopy (pPixmap))
- return pPixmap;
- else
- return NULL;
-}
-
-/**
- * Returns TRUE if the pixmap GPU copy is being accessed.
- */
-Bool
-ExaDoPrepareAccess(PixmapPtr pPixmap, int index)
-{
- ScreenPtr pScreen = pPixmap->drawable.pScreen;
- ExaScreenPriv (pScreen);
- ExaPixmapPriv(pPixmap);
- Bool has_gpu_copy, ret;
- int i;
-
- if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
- return FALSE;
-
- if (pExaPixmap == NULL)
- EXA_FatalErrorDebugWithRet(("EXA bug: ExaDoPrepareAccess was called on a non-exa pixmap.\n"), FALSE);
-
- /* Handle repeated / nested calls. */
- for (i = 0; i < EXA_NUM_PREPARE_INDICES; i++) {
- if (pExaScr->access[i].pixmap == pPixmap) {
- pExaScr->access[i].count++;
- return pExaScr->access[i].retval;
- }
- }
-
- /* If slot for this index is taken, find an empty slot */
- if (pExaScr->access[index].pixmap) {
- for (index = EXA_NUM_PREPARE_INDICES - 1; index >= 0; index--)
- if (!pExaScr->access[index].pixmap)
- break;
- }
-
- /* Access to this pixmap hasn't been prepared yet, so data pointer should be NULL. */
- if (pPixmap->devPrivate.ptr != NULL) {
- EXA_FatalErrorDebug(("EXA bug: pPixmap->devPrivate.ptr was %p, but should have been NULL.\n",
- pPixmap->devPrivate.ptr));
- }
-
- has_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
-
- if (has_gpu_copy && pExaPixmap->fb_ptr) {
- pPixmap->devPrivate.ptr = pExaPixmap->fb_ptr;
- ret = TRUE;
- } else {
- pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
- ret = FALSE;
- }
-
- /* Store so we can handle repeated / nested calls. */
- pExaScr->access[index].pixmap = pPixmap;
- pExaScr->access[index].count = 1;
-
- if (!has_gpu_copy)
- goto out;
-
- exaWaitSync (pScreen);
-
- if (pExaScr->info->PrepareAccess == NULL)
- goto out;
-
- if (index >= EXA_PREPARE_AUX_DEST &&
- !(pExaScr->info->flags & EXA_SUPPORTS_PREPARE_AUX)) {
- if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED)
- FatalError("Unsupported AUX indices used on a pinned pixmap.\n");
- exaMoveOutPixmap (pPixmap);
- ret = FALSE;
- goto out;
- }
-
- if (!(*pExaScr->info->PrepareAccess) (pPixmap, index)) {
- if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED &&
- !(pExaScr->info->flags & EXA_MIXED_PIXMAPS))
- FatalError("Driver failed PrepareAccess on a pinned pixmap.\n");
- exaMoveOutPixmap (pPixmap);
- ret = FALSE;
- goto out;
- }
-
- ret = TRUE;
-
-out:
- pExaScr->access[index].retval = ret;
- return ret;
-}
-
-/**
- * exaPrepareAccess() is EXA's wrapper for the driver's PrepareAccess() handler.
- *
- * It deals with waiting for synchronization with the card, determining if
- * PrepareAccess() is necessary, and working around PrepareAccess() failure.
- */
-void
-exaPrepareAccess(DrawablePtr pDrawable, int index)
-{
- PixmapPtr pPixmap = exaGetDrawablePixmap(pDrawable);
- ExaScreenPriv(pDrawable->pScreen);
-
- if (pExaScr->prepare_access_reg)
- pExaScr->prepare_access_reg(pPixmap, index, NULL);
- else
- (void)ExaDoPrepareAccess(pPixmap, index);
-}
-
-/**
- * exaFinishAccess() is EXA's wrapper for the driver's FinishAccess() handler.
- *
- * It deals with calling the driver's FinishAccess() only if necessary.
- */
-void
-exaFinishAccess(DrawablePtr pDrawable, int index)
-{
- ScreenPtr pScreen = pDrawable->pScreen;
- ExaScreenPriv (pScreen);
- PixmapPtr pPixmap = exaGetDrawablePixmap (pDrawable);
- ExaPixmapPriv (pPixmap);
- int i;
-
- if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
- return;
-
- if (pExaPixmap == NULL)
- EXA_FatalErrorDebugWithRet(("EXA bug: exaFinishAccesss was called on a non-exa pixmap.\n"),);
-
- /* Handle repeated / nested calls. */
- for (i = 0; i < EXA_NUM_PREPARE_INDICES; i++) {
- if (pExaScr->access[i].pixmap == pPixmap) {
- if (--pExaScr->access[i].count > 0)
- return;
- break;
- }
- }
-
- /* Catch unbalanced Prepare/FinishAccess calls. */
- if (i == EXA_NUM_PREPARE_INDICES)
- EXA_FatalErrorDebugWithRet(("EXA bug: FinishAccess called without PrepareAccess for pixmap 0x%p.\n",
- pPixmap),);
-
- pExaScr->access[i].pixmap = NULL;
-
- /* We always hide the devPrivate.ptr. */
- pPixmap->devPrivate.ptr = NULL;
-
- if (!pExaScr->info->FinishAccess || !exaPixmapHasGpuCopy(pPixmap))
- return;
-
- if (i >= EXA_PREPARE_AUX_DEST &&
- !(pExaScr->info->flags & EXA_SUPPORTS_PREPARE_AUX)) {
- ErrorF("EXA bug: Trying to call driver FinishAccess hook with "
- "unsupported index EXA_PREPARE_AUX*\n");
- return;
- }
-
- (*pExaScr->info->FinishAccess) (pPixmap, i);
-}
-
-/**
- * Here begins EXA's GC code.
- * Do not ever access the fb/mi layer directly.
- */
-
-static void
-exaValidateGC(GCPtr pGC,
- unsigned long changes,
- DrawablePtr pDrawable);
-
-static void
-exaDestroyGC(GCPtr pGC);
-
-static void
-exaChangeGC (GCPtr pGC,
- unsigned long mask);
-
-static void
-exaCopyGC (GCPtr pGCSrc,
- unsigned long mask,
- GCPtr pGCDst);
-
-static void
-exaChangeClip (GCPtr pGC,
- int type,
- pointer pvalue,
- int nrects);
-
-static void
-exaCopyClip(GCPtr pGCDst, GCPtr pGCSrc);
-
-static void
-exaCopyClip(GCPtr pGCDst, GCPtr pGCSrc);
-
-static void
-exaDestroyClip(GCPtr pGC);
-
-const GCFuncs exaGCFuncs = {
- exaValidateGC,
- exaChangeGC,
- exaCopyGC,
- exaDestroyGC,
- exaChangeClip,
- exaDestroyClip,
- exaCopyClip
-};
-
-static void
-exaValidateGC(GCPtr pGC,
- unsigned long changes,
- DrawablePtr pDrawable)
-{
- /* fbValidateGC will do direct access to pixmaps if the tiling has changed.
- * Do a few smart things so fbValidateGC can do it's work.
- */
-
- ScreenPtr pScreen = pDrawable->pScreen;
- ExaScreenPriv(pScreen);
- ExaGCPriv(pGC);
- PixmapPtr pTile = NULL;
- Bool finish_current_tile = FALSE;
-
- /* Either of these conditions is enough to trigger access to a tile pixmap. */
- /* With pGC->tileIsPixel == 1, you run the risk of dereferencing an invalid tile pixmap pointer. */
- if (pGC->fillStyle == FillTiled || ((changes & GCTile) && !pGC->tileIsPixel)) {
- pTile = pGC->tile.pixmap;
-
- /* Sometimes tile pixmaps are swapped, you need access to:
- * - The current tile if it depth matches.
- * - Or the rotated tile if that one matches depth and !(changes & GCTile).
- * - Or the current tile pixmap and a newly created one.
- */
- if (pTile && pTile->drawable.depth != pDrawable->depth && !(changes & GCTile)) {
- PixmapPtr pRotatedTile = fbGetRotatedPixmap(pGC);
- if (pRotatedTile && pRotatedTile->drawable.depth == pDrawable->depth)
- pTile = pRotatedTile;
- else
- finish_current_tile = TRUE; /* CreatePixmap will be called. */
- }
- }
-
- if (pGC->stipple)
- exaPrepareAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
- if (pTile)
- exaPrepareAccess(&pTile->drawable, EXA_PREPARE_SRC);
-
- /* Calls to Create/DestroyPixmap have to be identified as special. */
- pExaScr->fallback_counter++;
- swap(pExaGC, pGC, funcs);
- (*pGC->funcs->ValidateGC)(pGC, changes, pDrawable);
- swap(pExaGC, pGC, funcs);
- pExaScr->fallback_counter--;
-
- if (pTile)
- exaFinishAccess(&pTile->drawable, EXA_PREPARE_SRC);
- if (finish_current_tile && pGC->tile.pixmap)
- exaFinishAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_AUX_DEST);
- if (pGC->stipple)
- exaFinishAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
-}
-
-/* Is exaPrepareAccessGC() needed? */
-static void
-exaDestroyGC(GCPtr pGC)
-{
- ExaGCPriv(pGC);
- swap(pExaGC, pGC, funcs);
- (*pGC->funcs->DestroyGC)(pGC);
- swap(pExaGC, pGC, funcs);
-}
-
-static void
-exaChangeGC (GCPtr pGC,
- unsigned long mask)
-{
- ExaGCPriv(pGC);
- swap(pExaGC, pGC, funcs);
- (*pGC->funcs->ChangeGC) (pGC, mask);
- swap(pExaGC, pGC, funcs);
-}
-
-static void
-exaCopyGC (GCPtr pGCSrc,
- unsigned long mask,
- GCPtr pGCDst)
-{
- ExaGCPriv(pGCDst);
- swap(pExaGC, pGCDst, funcs);
- (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
- swap(pExaGC, pGCDst, funcs);
-}
-
-static void
-exaChangeClip (GCPtr pGC,
- int type,
- pointer pvalue,
- int nrects)
-{
- ExaGCPriv(pGC);
- swap(pExaGC, pGC, funcs);
- (*pGC->funcs->ChangeClip) (pGC, type, pvalue, nrects);
- swap(pExaGC, pGC, funcs);
-}
-
-static void
-exaCopyClip(GCPtr pGCDst, GCPtr pGCSrc)
-{
- ExaGCPriv(pGCDst);
- swap(pExaGC, pGCDst, funcs);
- (*pGCDst->funcs->CopyClip)(pGCDst, pGCSrc);
- swap(pExaGC, pGCDst, funcs);
-}
-
-static void
-exaDestroyClip(GCPtr pGC)
-{
- ExaGCPriv(pGC);
- swap(pExaGC, pGC, funcs);
- (*pGC->funcs->DestroyClip)(pGC);
- swap(pExaGC, pGC, funcs);
-}
-
-/**
- * exaCreateGC makes a new GC and hooks up its funcs handler, so that
- * exaValidateGC() will get called.
- */
-static int
-exaCreateGC (GCPtr pGC)
-{
- ScreenPtr pScreen = pGC->pScreen;
- ExaScreenPriv(pScreen);
- ExaGCPriv(pGC);
- Bool ret;
-
- swap(pExaScr, pScreen, CreateGC);
- if ((ret = (*pScreen->CreateGC) (pGC))) {
- wrap(pExaGC, pGC, funcs, (GCFuncs *) &exaGCFuncs);
- wrap(pExaGC, pGC, ops, (GCOps *) &exaOps);
- }
- swap(pExaScr, pScreen, CreateGC);
-
- return ret;
-}
-
-static Bool
-exaChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
-{
- Bool ret;
- ScreenPtr pScreen = pWin->drawable.pScreen;
- ExaScreenPriv(pScreen);
-
- if ((mask & CWBackPixmap) && pWin->backgroundState == BackgroundPixmap)
- exaPrepareAccess(&pWin->background.pixmap->drawable, EXA_PREPARE_SRC);
-
- if ((mask & CWBorderPixmap) && pWin->borderIsPixel == FALSE)
- exaPrepareAccess(&pWin->border.pixmap->drawable, EXA_PREPARE_MASK);
-
- pExaScr->fallback_counter++;
- swap(pExaScr, pScreen, ChangeWindowAttributes);
- ret = pScreen->ChangeWindowAttributes(pWin, mask);
- swap(pExaScr, pScreen, ChangeWindowAttributes);
- pExaScr->fallback_counter--;
-
- if ((mask & CWBackPixmap) && pWin->backgroundState == BackgroundPixmap)
- exaFinishAccess(&pWin->background.pixmap->drawable, EXA_PREPARE_SRC);
- if ((mask & CWBorderPixmap) && pWin->borderIsPixel == FALSE)
- exaFinishAccess(&pWin->border.pixmap->drawable, EXA_PREPARE_MASK);
-
- return ret;
-}
-
-static RegionPtr
-exaBitmapToRegion(PixmapPtr pPix)
-{
- RegionPtr ret;
- ScreenPtr pScreen = pPix->drawable.pScreen;
- ExaScreenPriv(pScreen);
-
- exaPrepareAccess(&pPix->drawable, EXA_PREPARE_SRC);
- swap(pExaScr, pScreen, BitmapToRegion);
- ret = pScreen->BitmapToRegion(pPix);
- swap(pExaScr, pScreen, BitmapToRegion);
- exaFinishAccess(&pPix->drawable, EXA_PREPARE_SRC);
-
- return ret;
-}
-
-static Bool
-exaCreateScreenResources(ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
- PixmapPtr pScreenPixmap;
- Bool b;
-
- swap(pExaScr, pScreen, CreateScreenResources);
- b = pScreen->CreateScreenResources(pScreen);
- swap(pExaScr, pScreen, CreateScreenResources);
-
- if (!b)
- return FALSE;
-
- pScreenPixmap = pScreen->GetScreenPixmap(pScreen);
-
- if (pScreenPixmap) {
- ExaPixmapPriv(pScreenPixmap);
-
- exaSetAccelBlock(pExaScr, pExaPixmap,
- pScreenPixmap->drawable.width,
- pScreenPixmap->drawable.height,
- pScreenPixmap->drawable.bitsPerPixel);
- }
-
- return TRUE;
-}
-
-static void
-ExaBlockHandler(int screenNum, pointer blockData, pointer pTimeout,
- pointer pReadmask)
-{
- ScreenPtr pScreen = screenInfo.screens[screenNum];
- ExaScreenPriv(pScreen);
-
- /* Move any deferred results from a software fallback to the driver pixmap */
- if (pExaScr->deferred_mixed_pixmap)
- exaMoveInPixmap_mixed(pExaScr->deferred_mixed_pixmap);
-
- unwrap(pExaScr, pScreen, BlockHandler);
- (*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);
- wrap(pExaScr, pScreen, BlockHandler, ExaBlockHandler);
-
- /* The rest only applies to classic EXA */
- if (pExaScr->info->flags & EXA_HANDLES_PIXMAPS)
- return;
-
- /* Try and keep the offscreen memory area tidy every now and then (at most
- * once per second) when the server has been idle for at least 100ms.
- */
- if (pExaScr->numOffscreenAvailable > 1) {
- CARD32 now = GetTimeInMillis();
-
- pExaScr->nextDefragment = now +
- max(100, (INT32)(pExaScr->lastDefragment + 1000 - now));
- AdjustWaitForDelay(pTimeout, pExaScr->nextDefragment - now);
- }
-}
-
-static void
-ExaWakeupHandler(int screenNum, pointer wakeupData, unsigned long result,
- pointer pReadmask)
-{
- ScreenPtr pScreen = screenInfo.screens[screenNum];
- ExaScreenPriv(pScreen);
-
- unwrap(pExaScr, pScreen, WakeupHandler);
- (*pScreen->WakeupHandler) (screenNum, wakeupData, result, pReadmask);
- wrap(pExaScr, pScreen, WakeupHandler, ExaWakeupHandler);
-
- if (result == 0 && pExaScr->numOffscreenAvailable > 1) {
- CARD32 now = GetTimeInMillis();
-
- if ((int)(now - pExaScr->nextDefragment) > 0) {
- ExaOffscreenDefragment(pScreen);
- pExaScr->lastDefragment = now;
- }
- }
-}
-
-/**
- * exaCloseScreen() unwraps its wrapped screen functions and tears down EXA's
- * screen private, before calling down to the next CloseSccreen.
- */
-static Bool
-exaCloseScreen(int i, ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
- PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
-
- if (ps->Glyphs == exaGlyphs)
- exaGlyphsFini(pScreen);
-
- if (pScreen->BlockHandler == ExaBlockHandler)
- unwrap(pExaScr, pScreen, BlockHandler);
- if (pScreen->WakeupHandler == ExaWakeupHandler)
- unwrap(pExaScr, pScreen, WakeupHandler);
- unwrap(pExaScr, pScreen, CreateGC);
- unwrap(pExaScr, pScreen, CloseScreen);
- unwrap(pExaScr, pScreen, GetImage);
- unwrap(pExaScr, pScreen, GetSpans);
- if (pExaScr->SavedCreatePixmap)
- unwrap(pExaScr, pScreen, CreatePixmap);
- if (pExaScr->SavedDestroyPixmap)
- unwrap(pExaScr, pScreen, DestroyPixmap);
- if (pExaScr->SavedModifyPixmapHeader)
- unwrap(pExaScr, pScreen, ModifyPixmapHeader);
- unwrap(pExaScr, pScreen, CopyWindow);
- unwrap(pExaScr, pScreen, ChangeWindowAttributes);
- unwrap(pExaScr, pScreen, BitmapToRegion);
- unwrap(pExaScr, pScreen, CreateScreenResources);
- unwrap(pExaScr, ps, Composite);
- if (pExaScr->SavedGlyphs)
- unwrap(pExaScr, ps, Glyphs);
- unwrap(pExaScr, ps, Trapezoids);
- unwrap(pExaScr, ps, Triangles);
- unwrap(pExaScr, ps, AddTraps);
-
- xfree (pExaScr);
-
- return (*pScreen->CloseScreen) (i, pScreen);
-}
-
-/**
- * This function allocates a driver structure for EXA drivers to fill in. By
- * having EXA allocate the structure, the driver structure can be extended
- * without breaking ABI between EXA and the drivers. The driver's
- * responsibility is to check beforehand that the EXA module has a matching
- * major number and sufficient minor. Drivers are responsible for freeing the
- * driver structure using xfree().
- *
- * @return a newly allocated, zero-filled driver structure
- */
-ExaDriverPtr
-exaDriverAlloc(void)
-{
- return xcalloc(1, sizeof(ExaDriverRec));
-}
-
-/**
- * @param pScreen screen being initialized
- * @param pScreenInfo EXA driver record
- *
- * exaDriverInit sets up EXA given a driver record filled in by the driver.
- * pScreenInfo should have been allocated by exaDriverAlloc(). See the
- * comments in _ExaDriver for what must be filled in and what is optional.
- *
- * @return TRUE if EXA was successfully initialized.
- */
-Bool
-exaDriverInit (ScreenPtr pScreen,
- ExaDriverPtr pScreenInfo)
-{
- ExaScreenPrivPtr pExaScr;
- PictureScreenPtr ps;
-
- if (!pScreenInfo)
- return FALSE;
-
- if (pScreenInfo->exa_major != EXA_VERSION_MAJOR ||
- pScreenInfo->exa_minor > EXA_VERSION_MINOR)
- {
- LogMessage(X_ERROR, "EXA(%d): driver's EXA version requirements "
- "(%d.%d) are incompatible with EXA version (%d.%d)\n",
- pScreen->myNum,
- pScreenInfo->exa_major, pScreenInfo->exa_minor,
- EXA_VERSION_MAJOR, EXA_VERSION_MINOR);
- return FALSE;
- }
-
- if (!pScreenInfo->CreatePixmap && !pScreenInfo->CreatePixmap2) {
- if (!pScreenInfo->memoryBase) {
- LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::memoryBase "
- "must be non-zero\n", pScreen->myNum);
- return FALSE;
- }
-
- if (!pScreenInfo->memorySize) {
- LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::memorySize must be "
- "non-zero\n", pScreen->myNum);
- return FALSE;
- }
-
- if (pScreenInfo->offScreenBase > pScreenInfo->memorySize) {
- LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::offScreenBase must "
- "be <= ExaDriverRec::memorySize\n", pScreen->myNum);
- return FALSE;
- }
- }
-
- if (!pScreenInfo->PrepareSolid) {
- LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::PrepareSolid must be "
- "non-NULL\n", pScreen->myNum);
- return FALSE;
- }
-
- if (!pScreenInfo->PrepareCopy) {
- LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::PrepareCopy must be "
- "non-NULL\n", pScreen->myNum);
- return FALSE;
- }
-
- if (!pScreenInfo->WaitMarker) {
- LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::WaitMarker must be "
- "non-NULL\n", pScreen->myNum);
- return FALSE;
- }
-
- /* If the driver doesn't set any max pitch values, we'll just assume
- * that there's a limitation by pixels, and that it's the same as
- * maxX.
- *
- * We want maxPitchPixels or maxPitchBytes to be set so we can check
- * pixmaps against the max pitch in exaCreatePixmap() -- it matters
- * whether a pixmap is rejected because of its pitch or
- * because of its width.
- */
- if (!pScreenInfo->maxPitchPixels && !pScreenInfo->maxPitchBytes)
- {
- pScreenInfo->maxPitchPixels = pScreenInfo->maxX;
- }
-
- ps = GetPictureScreenIfSet(pScreen);
-
- pExaScr = xcalloc (sizeof (ExaScreenPrivRec), 1);
- if (!pExaScr) {
- LogMessage(X_WARNING, "EXA(%d): Failed to allocate screen private\n",
- pScreen->myNum);
- return FALSE;
- }
-
- pExaScr->info = pScreenInfo;
-
- dixSetPrivate(&pScreen->devPrivates, exaScreenPrivateKey, pExaScr);
-
- pExaScr->migration = ExaMigrationAlways;
-
- exaDDXDriverInit(pScreen);
-
- if (!dixRequestPrivate(exaGCPrivateKey, sizeof(ExaGCPrivRec))) {
- LogMessage(X_WARNING,
- "EXA(%d): Failed to allocate GC private\n",
- pScreen->myNum);
- return FALSE;
- }
-
- /*
- * Replace various fb screen functions
- */
- if ((pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS) &&
- (!(pExaScr->info->flags & EXA_HANDLES_PIXMAPS) ||
- (pExaScr->info->flags & EXA_MIXED_PIXMAPS)))
- wrap(pExaScr, pScreen, BlockHandler, ExaBlockHandler);
- if ((pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS) &&
- !(pExaScr->info->flags & EXA_HANDLES_PIXMAPS))
- wrap(pExaScr, pScreen, WakeupHandler, ExaWakeupHandler);
- wrap(pExaScr, pScreen, CreateGC, exaCreateGC);
- wrap(pExaScr, pScreen, CloseScreen, exaCloseScreen);
- wrap(pExaScr, pScreen, GetImage, exaGetImage);
- wrap(pExaScr, pScreen, GetSpans, ExaCheckGetSpans);
- wrap(pExaScr, pScreen, CopyWindow, exaCopyWindow);
- wrap(pExaScr, pScreen, ChangeWindowAttributes, exaChangeWindowAttributes);
- wrap(pExaScr, pScreen, BitmapToRegion, exaBitmapToRegion);
- wrap(pExaScr, pScreen, CreateScreenResources, exaCreateScreenResources);
-
- if (ps) {
- wrap(pExaScr, ps, Composite, exaComposite);
- if (pScreenInfo->PrepareComposite)
- wrap(pExaScr, ps, Glyphs, exaGlyphs);
- wrap(pExaScr, ps, Trapezoids, exaTrapezoids);
- wrap(pExaScr, ps, Triangles, exaTriangles);
- wrap(pExaScr, ps, AddTraps, ExaCheckAddTraps);
- }
-
-#ifdef MITSHM
- /*
- * Don't allow shared pixmaps.
- */
- ShmRegisterFuncs(pScreen, &exaShmFuncs);
-#endif
- /*
- * Hookup offscreen pixmaps
- */
- if (pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS)
- {
- if (!dixRequestPrivate(exaPixmapPrivateKey, sizeof(ExaPixmapPrivRec))) {
- LogMessage(X_WARNING,
- "EXA(%d): Failed to allocate pixmap private\n",
- pScreen->myNum);
- return FALSE;
- }
- if (pExaScr->info->flags & EXA_HANDLES_PIXMAPS) {
- if (pExaScr->info->flags & EXA_MIXED_PIXMAPS) {
- wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_mixed);
- wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_mixed);
- wrap(pExaScr, pScreen, ModifyPixmapHeader, exaModifyPixmapHeader_mixed);
- pExaScr->do_migration = exaDoMigration_mixed;
- pExaScr->pixmap_has_gpu_copy = exaPixmapHasGpuCopy_mixed;
- pExaScr->do_move_in_pixmap = exaMoveInPixmap_mixed;
- pExaScr->do_move_out_pixmap = NULL;
- pExaScr->prepare_access_reg = exaPrepareAccessReg_mixed;
- } else {
- wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_driver);
- wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_driver);
- wrap(pExaScr, pScreen, ModifyPixmapHeader, exaModifyPixmapHeader_driver);
- pExaScr->do_migration = NULL;
- pExaScr->pixmap_has_gpu_copy = exaPixmapHasGpuCopy_driver;
- pExaScr->do_move_in_pixmap = NULL;
- pExaScr->do_move_out_pixmap = NULL;
- pExaScr->prepare_access_reg = NULL;
- }
- } else {
- wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_classic);
- wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_classic);
- wrap(pExaScr, pScreen, ModifyPixmapHeader, exaModifyPixmapHeader_classic);
- pExaScr->do_migration = exaDoMigration_classic;
- pExaScr->pixmap_has_gpu_copy = exaPixmapHasGpuCopy_classic;
- pExaScr->do_move_in_pixmap = exaMoveInPixmap_classic;
- pExaScr->do_move_out_pixmap = exaMoveOutPixmap_classic;
- pExaScr->prepare_access_reg = exaPrepareAccessReg_classic;
- }
- if (!(pExaScr->info->flags & EXA_HANDLES_PIXMAPS)) {
- LogMessage(X_INFO, "EXA(%d): Offscreen pixmap area of %lu bytes\n",
- pScreen->myNum,
- pExaScr->info->memorySize - pExaScr->info->offScreenBase);
- } else {
- LogMessage(X_INFO, "EXA(%d): Driver allocated offscreen pixmaps\n",
- pScreen->myNum);
-
- }
- }
- else
- LogMessage(X_INFO, "EXA(%d): No offscreen pixmaps\n", pScreen->myNum);
-
- if (!(pExaScr->info->flags & EXA_HANDLES_PIXMAPS)) {
- DBG_PIXMAP(("============== %ld < %ld\n", pExaScr->info->offScreenBase,
- pExaScr->info->memorySize));
- if (pExaScr->info->offScreenBase < pExaScr->info->memorySize) {
- if (!exaOffscreenInit (pScreen)) {
- LogMessage(X_WARNING, "EXA(%d): Offscreen pixmap setup failed\n",
- pScreen->myNum);
- return FALSE;
- }
- }
- }
-
- if (ps->Glyphs == exaGlyphs)
- exaGlyphsInit(pScreen);
-
- LogMessage(X_INFO, "EXA(%d): Driver registered support for the following"
- " operations:\n", pScreen->myNum);
- assert(pScreenInfo->PrepareSolid != NULL);
- LogMessage(X_INFO, " Solid\n");
- assert(pScreenInfo->PrepareCopy != NULL);
- LogMessage(X_INFO, " Copy\n");
- if (pScreenInfo->PrepareComposite != NULL) {
- LogMessage(X_INFO, " Composite (RENDER acceleration)\n");
- }
- if (pScreenInfo->UploadToScreen != NULL) {
- LogMessage(X_INFO, " UploadToScreen\n");
- }
- if (pScreenInfo->DownloadFromScreen != NULL) {
- LogMessage(X_INFO, " DownloadFromScreen\n");
- }
-
- return TRUE;
-}
-
-/**
- * exaDriverFini tears down EXA on a given screen.
- *
- * @param pScreen screen being torn down.
- */
-void
-exaDriverFini (ScreenPtr pScreen)
-{
- /*right now does nothing*/
-}
-
-/**
- * exaMarkSync() should be called after any asynchronous drawing by the hardware.
- *
- * @param pScreen screen which drawing occurred on
- *
- * exaMarkSync() sets a flag to indicate that some asynchronous drawing has
- * happened and a WaitSync() will be necessary before relying on the contents of
- * offscreen memory from the CPU's perspective. It also calls an optional
- * driver MarkSync() callback, the return value of which may be used to do partial
- * synchronization with the hardware in the future.
- */
-void exaMarkSync(ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
-
- pExaScr->info->needsSync = TRUE;
- if (pExaScr->info->MarkSync != NULL) {
- pExaScr->info->lastMarker = (*pExaScr->info->MarkSync)(pScreen);
- }
-}
-
-/**
- * exaWaitSync() ensures that all drawing has been completed.
- *
- * @param pScreen screen being synchronized.
- *
- * Calls down into the driver to ensure that all previous drawing has completed.
- * It should always be called before relying on the framebuffer contents
- * reflecting previous drawing, from a CPU perspective.
- */
-void exaWaitSync(ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
-
- if (pExaScr->info->needsSync && !pExaScr->swappedOut) {
- (*pExaScr->info->WaitMarker)(pScreen, pExaScr->info->lastMarker);
- pExaScr->info->needsSync = FALSE;
- }
-}
-
-/**
- * Performs migration of the pixmaps according to the operation information
- * provided in pixmaps and can_accel and the migration scheme chosen in the
- * config file.
- */
-void
-exaDoMigration (ExaMigrationPtr pixmaps, int npixmaps, Bool can_accel)
-{
- ScreenPtr pScreen = pixmaps[0].pPix->drawable.pScreen;
- ExaScreenPriv(pScreen);
-
- if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
- return;
-
- if (pExaScr->do_migration)
- (*pExaScr->do_migration)(pixmaps, npixmaps, can_accel);
-}
-
-void
-exaMoveInPixmap (PixmapPtr pPixmap)
-{
- ScreenPtr pScreen = pPixmap->drawable.pScreen;
- ExaScreenPriv(pScreen);
-
- if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
- return;
-
- if (pExaScr->do_move_in_pixmap)
- (*pExaScr->do_move_in_pixmap)(pPixmap);
-}
-
-void
-exaMoveOutPixmap (PixmapPtr pPixmap)
-{
- ScreenPtr pScreen = pPixmap->drawable.pScreen;
- ExaScreenPriv(pScreen);
-
- if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
- return;
-
- if (pExaScr->do_move_out_pixmap)
- (*pExaScr->do_move_out_pixmap)(pPixmap);
-}
+/*
+ * Copyright © 2001 Keith Packard
+ *
+ * Partly based on code that is Copyright © The XFree86 Project Inc.
+ *
+ * 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, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/** @file
+ * This file covers the initialization and teardown of EXA, and has various
+ * functions not responsible for performing rendering, pixmap migration, or
+ * memory management.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdlib.h>
+
+#include "exa_priv.h"
+#include "exa.h"
+
+static int exaScreenPrivateKeyIndex;
+DevPrivateKey exaScreenPrivateKey = &exaScreenPrivateKeyIndex;
+static int exaPixmapPrivateKeyIndex;
+DevPrivateKey exaPixmapPrivateKey = &exaPixmapPrivateKeyIndex;
+static int exaGCPrivateKeyIndex;
+DevPrivateKey exaGCPrivateKey = &exaGCPrivateKeyIndex;
+
+#ifdef MITSHM
+static ShmFuncs exaShmFuncs = { NULL, NULL };
+#endif
+
+/**
+ * exaGetPixmapOffset() returns the offset (in bytes) within the framebuffer of
+ * the beginning of the given pixmap.
+ *
+ * Note that drivers are free to, and often do, munge this offset as necessary
+ * for handing to the hardware -- for example, translating it into a different
+ * aperture. This function may need to be extended in the future if we grow
+ * support for having multiple card-accessible offscreen, such as an AGP memory
+ * pool alongside the framebuffer pool.
+ */
+unsigned long
+exaGetPixmapOffset(PixmapPtr pPix)
+{
+ ExaScreenPriv (pPix->drawable.pScreen);
+ ExaPixmapPriv (pPix);
+
+ return (CARD8 *)pExaPixmap->fb_ptr - pExaScr->info->memoryBase;
+}
+
+void *
+exaGetPixmapDriverPrivate(PixmapPtr pPix)
+{
+ ExaPixmapPriv(pPix);
+
+ return pExaPixmap->driverPriv;
+}
+
+/**
+ * exaGetPixmapPitch() returns the pitch (in bytes) of the given pixmap.
+ *
+ * This is a helper to make driver code more obvious, due to the rather obscure
+ * naming of the pitch field in the pixmap.
+ */
+unsigned long
+exaGetPixmapPitch(PixmapPtr pPix)
+{
+ return pPix->devKind;
+}
+
+/**
+ * exaGetPixmapSize() returns the size in bytes of the given pixmap in video
+ * memory. Only valid when the pixmap is currently in framebuffer.
+ */
+unsigned long
+exaGetPixmapSize(PixmapPtr pPix)
+{
+ ExaPixmapPrivPtr pExaPixmap;
+
+ pExaPixmap = ExaGetPixmapPriv(pPix);
+ if (pExaPixmap != NULL)
+ return pExaPixmap->fb_size;
+ return 0;
+}
+
+/**
+ * exaGetDrawablePixmap() returns a backing pixmap for a given drawable.
+ *
+ * @param pDrawable the drawable being requested.
+ *
+ * This function returns the backing pixmap for a drawable, whether it is a
+ * redirected window, unredirected window, or already a pixmap. Note that
+ * coordinate translation is needed when drawing to the backing pixmap of a
+ * redirected window, and the translation coordinates are provided by calling
+ * exaGetOffscreenPixmap() on the drawable.
+ */
+PixmapPtr
+exaGetDrawablePixmap(DrawablePtr pDrawable)
+{
+ if (pDrawable->type == DRAWABLE_WINDOW)
+ return pDrawable->pScreen->GetWindowPixmap ((WindowPtr) pDrawable);
+ else
+ return (PixmapPtr) pDrawable;
+}
+
+/**
+ * Sets the offsets to add to coordinates to make them address the same bits in
+ * the backing drawable. These coordinates are nonzero only for redirected
+ * windows.
+ */
+void
+exaGetDrawableDeltas (DrawablePtr pDrawable, PixmapPtr pPixmap,
+ int *xp, int *yp)
+{
+#ifdef COMPOSITE
+ if (pDrawable->type == DRAWABLE_WINDOW) {
+ *xp = -pPixmap->screen_x;
+ *yp = -pPixmap->screen_y;
+ return;
+ }
+#endif
+
+ *xp = 0;
+ *yp = 0;
+}
+
+/**
+ * exaPixmapDirty() marks a pixmap as dirty, allowing for
+ * optimizations in pixmap migration when no changes have occurred.
+ */
+void
+exaPixmapDirty (PixmapPtr pPix, int x1, int y1, int x2, int y2)
+{
+ BoxRec box;
+ RegionRec region;
+
+ box.x1 = max(x1, 0);
+ box.y1 = max(y1, 0);
+ box.x2 = min(x2, pPix->drawable.width);
+ box.y2 = min(y2, pPix->drawable.height);
+
+ if (box.x1 >= box.x2 || box.y1 >= box.y2)
+ return;
+
+ REGION_INIT(pScreen, &region, &box, 1);
+ DamageRegionAppend(&pPix->drawable, &region);
+ DamageRegionProcessPending(&pPix->drawable);
+ REGION_UNINIT(pScreen, &region);
+}
+
+static int
+exaLog2(int val)
+{
+ int bits;
+
+ if (val <= 0)
+ return 0;
+ for (bits = 0; val != 0; bits++)
+ val >>= 1;
+ return bits - 1;
+}
+
+void
+exaSetAccelBlock(ExaScreenPrivPtr pExaScr, ExaPixmapPrivPtr pExaPixmap,
+ int w, int h, int bpp)
+{
+ pExaPixmap->accel_blocked = 0;
+
+ if (pExaScr->info->maxPitchPixels) {
+ int max_pitch = pExaScr->info->maxPitchPixels * bits_to_bytes(bpp);
+
+ if (pExaPixmap->fb_pitch > max_pitch)
+ pExaPixmap->accel_blocked |= EXA_RANGE_PITCH;
+ }
+
+ if (pExaScr->info->maxPitchBytes &&
+ pExaPixmap->fb_pitch > pExaScr->info->maxPitchBytes)
+ pExaPixmap->accel_blocked |= EXA_RANGE_PITCH;
+
+ if (w > pExaScr->info->maxX)
+ pExaPixmap->accel_blocked |= EXA_RANGE_WIDTH;
+
+ if (h > pExaScr->info->maxY)
+ pExaPixmap->accel_blocked |= EXA_RANGE_HEIGHT;
+}
+
+void
+exaSetFbPitch(ExaScreenPrivPtr pExaScr, ExaPixmapPrivPtr pExaPixmap,
+ int w, int h, int bpp)
+{
+ if (pExaScr->info->flags & EXA_OFFSCREEN_ALIGN_POT && w != 1)
+ pExaPixmap->fb_pitch = bits_to_bytes((1 << (exaLog2(w - 1) + 1)) * bpp);
+ else
+ pExaPixmap->fb_pitch = bits_to_bytes(w * bpp);
+
+ pExaPixmap->fb_pitch = EXA_ALIGN(pExaPixmap->fb_pitch,
+ pExaScr->info->pixmapPitchAlign);
+}
+
+/**
+ * Returns TRUE if the pixmap is not movable. This is the case where it's a
+ * pixmap which has no private (almost always bad) or it's a scratch pixmap created by
+ * some X Server internal component (the score says it's pinned).
+ */
+Bool
+exaPixmapIsPinned (PixmapPtr pPix)
+{
+ ExaPixmapPriv (pPix);
+
+ if (pExaPixmap == NULL)
+ EXA_FatalErrorDebugWithRet(("EXA bug: exaPixmapIsPinned was called on a non-exa pixmap.\n"), TRUE);
+
+ return pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED;
+}
+
+/**
+ * exaPixmapHasGpuCopy() is used to determine if a pixmap is in offscreen
+ * memory, meaning that acceleration could probably be done to it, and that it
+ * will need to be wrapped by PrepareAccess()/FinishAccess() when accessing it
+ * with the CPU.
+ *
+ * Note that except for UploadToScreen()/DownloadFromScreen() (which explicitly
+ * deal with moving pixmaps in and out of system memory), EXA will give drivers
+ * pixmaps as arguments for which exaPixmapHasGpuCopy() is TRUE.
+ *
+ * @return TRUE if the given drawable is in framebuffer memory.
+ */
+Bool
+exaPixmapHasGpuCopy(PixmapPtr pPixmap)
+{
+ ScreenPtr pScreen = pPixmap->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+
+ if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
+ return FALSE;
+
+ return (*pExaScr->pixmap_has_gpu_copy)(pPixmap);
+}
+
+/**
+ * exaDrawableIsOffscreen() is a convenience wrapper for exaPixmapHasGpuCopy().
+ */
+Bool
+exaDrawableIsOffscreen (DrawablePtr pDrawable)
+{
+ return exaPixmapHasGpuCopy (exaGetDrawablePixmap (pDrawable));
+}
+
+/**
+ * Returns the pixmap which backs a drawable, and the offsets to add to
+ * coordinates to make them address the same bits in the backing drawable.
+ */
+PixmapPtr
+exaGetOffscreenPixmap (DrawablePtr pDrawable, int *xp, int *yp)
+{
+ PixmapPtr pPixmap = exaGetDrawablePixmap (pDrawable);
+
+ exaGetDrawableDeltas (pDrawable, pPixmap, xp, yp);
+
+ if (exaPixmapHasGpuCopy (pPixmap))
+ return pPixmap;
+ else
+ return NULL;
+}
+
+/**
+ * Returns TRUE if the pixmap GPU copy is being accessed.
+ */
+Bool
+ExaDoPrepareAccess(PixmapPtr pPixmap, int index)
+{
+ ScreenPtr pScreen = pPixmap->drawable.pScreen;
+ ExaScreenPriv (pScreen);
+ ExaPixmapPriv(pPixmap);
+ Bool has_gpu_copy, ret;
+ int i;
+
+ if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
+ return FALSE;
+
+ if (pExaPixmap == NULL)
+ EXA_FatalErrorDebugWithRet(("EXA bug: ExaDoPrepareAccess was called on a non-exa pixmap.\n"), FALSE);
+
+ /* Handle repeated / nested calls. */
+ for (i = 0; i < EXA_NUM_PREPARE_INDICES; i++) {
+ if (pExaScr->access[i].pixmap == pPixmap) {
+ pExaScr->access[i].count++;
+ return pExaScr->access[i].retval;
+ }
+ }
+
+ /* If slot for this index is taken, find an empty slot */
+ if (pExaScr->access[index].pixmap) {
+ for (index = EXA_NUM_PREPARE_INDICES - 1; index >= 0; index--)
+ if (!pExaScr->access[index].pixmap)
+ break;
+ }
+
+ /* Access to this pixmap hasn't been prepared yet, so data pointer should be NULL. */
+ if (pPixmap->devPrivate.ptr != NULL) {
+ EXA_FatalErrorDebug(("EXA bug: pPixmap->devPrivate.ptr was %p, but should have been NULL.\n",
+ pPixmap->devPrivate.ptr));
+ }
+
+ has_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
+
+ if (has_gpu_copy && pExaPixmap->fb_ptr) {
+ pPixmap->devPrivate.ptr = pExaPixmap->fb_ptr;
+ ret = TRUE;
+ } else {
+ pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
+ ret = FALSE;
+ }
+
+ /* Store so we can handle repeated / nested calls. */
+ pExaScr->access[index].pixmap = pPixmap;
+ pExaScr->access[index].count = 1;
+
+ if (!has_gpu_copy)
+ goto out;
+
+ exaWaitSync (pScreen);
+
+ if (pExaScr->info->PrepareAccess == NULL)
+ goto out;
+
+ if (index >= EXA_PREPARE_AUX_DEST &&
+ !(pExaScr->info->flags & EXA_SUPPORTS_PREPARE_AUX)) {
+ if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED)
+ FatalError("Unsupported AUX indices used on a pinned pixmap.\n");
+ exaMoveOutPixmap (pPixmap);
+ ret = FALSE;
+ goto out;
+ }
+
+ if (!(*pExaScr->info->PrepareAccess) (pPixmap, index)) {
+ if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED &&
+ !(pExaScr->info->flags & EXA_MIXED_PIXMAPS))
+ FatalError("Driver failed PrepareAccess on a pinned pixmap.\n");
+ exaMoveOutPixmap (pPixmap);
+ ret = FALSE;
+ goto out;
+ }
+
+ ret = TRUE;
+
+out:
+ pExaScr->access[index].retval = ret;
+ return ret;
+}
+
+/**
+ * exaPrepareAccess() is EXA's wrapper for the driver's PrepareAccess() handler.
+ *
+ * It deals with waiting for synchronization with the card, determining if
+ * PrepareAccess() is necessary, and working around PrepareAccess() failure.
+ */
+void
+exaPrepareAccess(DrawablePtr pDrawable, int index)
+{
+ PixmapPtr pPixmap = exaGetDrawablePixmap(pDrawable);
+ ExaScreenPriv(pDrawable->pScreen);
+
+ if (pExaScr->prepare_access_reg)
+ pExaScr->prepare_access_reg(pPixmap, index, NULL);
+ else
+ (void)ExaDoPrepareAccess(pPixmap, index);
+}
+
+/**
+ * exaFinishAccess() is EXA's wrapper for the driver's FinishAccess() handler.
+ *
+ * It deals with calling the driver's FinishAccess() only if necessary.
+ */
+void
+exaFinishAccess(DrawablePtr pDrawable, int index)
+{
+ ScreenPtr pScreen = pDrawable->pScreen;
+ ExaScreenPriv (pScreen);
+ PixmapPtr pPixmap = exaGetDrawablePixmap (pDrawable);
+ ExaPixmapPriv (pPixmap);
+ int i;
+
+ if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
+ return;
+
+ if (pExaPixmap == NULL)
+ EXA_FatalErrorDebugWithRet(("EXA bug: exaFinishAccesss was called on a non-exa pixmap.\n"),);
+
+ /* Handle repeated / nested calls. */
+ for (i = 0; i < EXA_NUM_PREPARE_INDICES; i++) {
+ if (pExaScr->access[i].pixmap == pPixmap) {
+ if (--pExaScr->access[i].count > 0)
+ return;
+ break;
+ }
+ }
+
+ /* Catch unbalanced Prepare/FinishAccess calls. */
+ if (i == EXA_NUM_PREPARE_INDICES)
+ EXA_FatalErrorDebugWithRet(("EXA bug: FinishAccess called without PrepareAccess for pixmap 0x%p.\n",
+ pPixmap),);
+
+ pExaScr->access[i].pixmap = NULL;
+
+ /* We always hide the devPrivate.ptr. */
+ pPixmap->devPrivate.ptr = NULL;
+
+ if (!pExaScr->info->FinishAccess || !exaPixmapHasGpuCopy(pPixmap))
+ return;
+
+ if (i >= EXA_PREPARE_AUX_DEST &&
+ !(pExaScr->info->flags & EXA_SUPPORTS_PREPARE_AUX)) {
+ ErrorF("EXA bug: Trying to call driver FinishAccess hook with "
+ "unsupported index EXA_PREPARE_AUX*\n");
+ return;
+ }
+
+ (*pExaScr->info->FinishAccess) (pPixmap, i);
+}
+
+/**
+ * Here begins EXA's GC code.
+ * Do not ever access the fb/mi layer directly.
+ */
+
+static void
+exaValidateGC(GCPtr pGC,
+ unsigned long changes,
+ DrawablePtr pDrawable);
+
+static void
+exaDestroyGC(GCPtr pGC);
+
+static void
+exaChangeGC (GCPtr pGC,
+ unsigned long mask);
+
+static void
+exaCopyGC (GCPtr pGCSrc,
+ unsigned long mask,
+ GCPtr pGCDst);
+
+static void
+exaChangeClip (GCPtr pGC,
+ int type,
+ pointer pvalue,
+ int nrects);
+
+static void
+exaCopyClip(GCPtr pGCDst, GCPtr pGCSrc);
+
+static void
+exaCopyClip(GCPtr pGCDst, GCPtr pGCSrc);
+
+static void
+exaDestroyClip(GCPtr pGC);
+
+const GCFuncs exaGCFuncs = {
+ exaValidateGC,
+ exaChangeGC,
+ exaCopyGC,
+ exaDestroyGC,
+ exaChangeClip,
+ exaDestroyClip,
+ exaCopyClip
+};
+
+static void
+exaValidateGC(GCPtr pGC,
+ unsigned long changes,
+ DrawablePtr pDrawable)
+{
+ /* fbValidateGC will do direct access to pixmaps if the tiling has changed.
+ * Do a few smart things so fbValidateGC can do it's work.
+ */
+
+ ScreenPtr pScreen = pDrawable->pScreen;
+ ExaScreenPriv(pScreen);
+ ExaGCPriv(pGC);
+ PixmapPtr pTile = NULL;
+ Bool finish_current_tile = FALSE;
+
+ /* Either of these conditions is enough to trigger access to a tile pixmap. */
+ /* With pGC->tileIsPixel == 1, you run the risk of dereferencing an invalid tile pixmap pointer. */
+ if (pGC->fillStyle == FillTiled || ((changes & GCTile) && !pGC->tileIsPixel)) {
+ pTile = pGC->tile.pixmap;
+
+ /* Sometimes tile pixmaps are swapped, you need access to:
+ * - The current tile if it depth matches.
+ * - Or the rotated tile if that one matches depth and !(changes & GCTile).
+ * - Or the current tile pixmap and a newly created one.
+ */
+ if (pTile && pTile->drawable.depth != pDrawable->depth && !(changes & GCTile)) {
+ PixmapPtr pRotatedTile = fbGetRotatedPixmap(pGC);
+ if (pRotatedTile && pRotatedTile->drawable.depth == pDrawable->depth)
+ pTile = pRotatedTile;
+ else
+ finish_current_tile = TRUE; /* CreatePixmap will be called. */
+ }
+ }
+
+ if (pGC->stipple)
+ exaPrepareAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
+ if (pTile)
+ exaPrepareAccess(&pTile->drawable, EXA_PREPARE_SRC);
+
+ /* Calls to Create/DestroyPixmap have to be identified as special. */
+ pExaScr->fallback_counter++;
+ swap(pExaGC, pGC, funcs);
+ (*pGC->funcs->ValidateGC)(pGC, changes, pDrawable);
+ swap(pExaGC, pGC, funcs);
+ pExaScr->fallback_counter--;
+
+ if (pTile)
+ exaFinishAccess(&pTile->drawable, EXA_PREPARE_SRC);
+ if (finish_current_tile && pGC->tile.pixmap)
+ exaFinishAccess(&pGC->tile.pixmap->drawable, EXA_PREPARE_AUX_DEST);
+ if (pGC->stipple)
+ exaFinishAccess(&pGC->stipple->drawable, EXA_PREPARE_MASK);
+}
+
+/* Is exaPrepareAccessGC() needed? */
+static void
+exaDestroyGC(GCPtr pGC)
+{
+ ExaGCPriv(pGC);
+ swap(pExaGC, pGC, funcs);
+ (*pGC->funcs->DestroyGC)(pGC);
+ swap(pExaGC, pGC, funcs);
+}
+
+static void
+exaChangeGC (GCPtr pGC,
+ unsigned long mask)
+{
+ ExaGCPriv(pGC);
+ swap(pExaGC, pGC, funcs);
+ (*pGC->funcs->ChangeGC) (pGC, mask);
+ swap(pExaGC, pGC, funcs);
+}
+
+static void
+exaCopyGC (GCPtr pGCSrc,
+ unsigned long mask,
+ GCPtr pGCDst)
+{
+ ExaGCPriv(pGCDst);
+ swap(pExaGC, pGCDst, funcs);
+ (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
+ swap(pExaGC, pGCDst, funcs);
+}
+
+static void
+exaChangeClip (GCPtr pGC,
+ int type,
+ pointer pvalue,
+ int nrects)
+{
+ ExaGCPriv(pGC);
+ swap(pExaGC, pGC, funcs);
+ (*pGC->funcs->ChangeClip) (pGC, type, pvalue, nrects);
+ swap(pExaGC, pGC, funcs);
+}
+
+static void
+exaCopyClip(GCPtr pGCDst, GCPtr pGCSrc)
+{
+ ExaGCPriv(pGCDst);
+ swap(pExaGC, pGCDst, funcs);
+ (*pGCDst->funcs->CopyClip)(pGCDst, pGCSrc);
+ swap(pExaGC, pGCDst, funcs);
+}
+
+static void
+exaDestroyClip(GCPtr pGC)
+{
+ ExaGCPriv(pGC);
+ swap(pExaGC, pGC, funcs);
+ (*pGC->funcs->DestroyClip)(pGC);
+ swap(pExaGC, pGC, funcs);
+}
+
+/**
+ * exaCreateGC makes a new GC and hooks up its funcs handler, so that
+ * exaValidateGC() will get called.
+ */
+static int
+exaCreateGC (GCPtr pGC)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ ExaScreenPriv(pScreen);
+ ExaGCPriv(pGC);
+ Bool ret;
+
+ swap(pExaScr, pScreen, CreateGC);
+ if ((ret = (*pScreen->CreateGC) (pGC))) {
+ wrap(pExaGC, pGC, funcs, (GCFuncs *) &exaGCFuncs);
+ wrap(pExaGC, pGC, ops, (GCOps *) &exaOps);
+ }
+ swap(pExaScr, pScreen, CreateGC);
+
+ return ret;
+}
+
+static Bool
+exaChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
+{
+ Bool ret;
+ ScreenPtr pScreen = pWin->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+
+ if ((mask & CWBackPixmap) && pWin->backgroundState == BackgroundPixmap)
+ exaPrepareAccess(&pWin->background.pixmap->drawable, EXA_PREPARE_SRC);
+
+ if ((mask & CWBorderPixmap) && pWin->borderIsPixel == FALSE)
+ exaPrepareAccess(&pWin->border.pixmap->drawable, EXA_PREPARE_MASK);
+
+ pExaScr->fallback_counter++;
+ swap(pExaScr, pScreen, ChangeWindowAttributes);
+ ret = pScreen->ChangeWindowAttributes(pWin, mask);
+ swap(pExaScr, pScreen, ChangeWindowAttributes);
+ pExaScr->fallback_counter--;
+
+ if ((mask & CWBackPixmap) && pWin->backgroundState == BackgroundPixmap)
+ exaFinishAccess(&pWin->background.pixmap->drawable, EXA_PREPARE_SRC);
+ if ((mask & CWBorderPixmap) && pWin->borderIsPixel == FALSE)
+ exaFinishAccess(&pWin->border.pixmap->drawable, EXA_PREPARE_MASK);
+
+ return ret;
+}
+
+static RegionPtr
+exaBitmapToRegion(PixmapPtr pPix)
+{
+ RegionPtr ret;
+ ScreenPtr pScreen = pPix->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+
+ exaPrepareAccess(&pPix->drawable, EXA_PREPARE_SRC);
+ swap(pExaScr, pScreen, BitmapToRegion);
+ ret = pScreen->BitmapToRegion(pPix);
+ swap(pExaScr, pScreen, BitmapToRegion);
+ exaFinishAccess(&pPix->drawable, EXA_PREPARE_SRC);
+
+ return ret;
+}
+
+static Bool
+exaCreateScreenResources(ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+ PixmapPtr pScreenPixmap;
+ Bool b;
+
+ swap(pExaScr, pScreen, CreateScreenResources);
+ b = pScreen->CreateScreenResources(pScreen);
+ swap(pExaScr, pScreen, CreateScreenResources);
+
+ if (!b)
+ return FALSE;
+
+ pScreenPixmap = pScreen->GetScreenPixmap(pScreen);
+
+ if (pScreenPixmap) {
+ ExaPixmapPriv(pScreenPixmap);
+
+ exaSetAccelBlock(pExaScr, pExaPixmap,
+ pScreenPixmap->drawable.width,
+ pScreenPixmap->drawable.height,
+ pScreenPixmap->drawable.bitsPerPixel);
+ }
+
+ return TRUE;
+}
+
+static void
+ExaBlockHandler(int screenNum, pointer blockData, pointer pTimeout,
+ pointer pReadmask)
+{
+ ScreenPtr pScreen = screenInfo.screens[screenNum];
+ ExaScreenPriv(pScreen);
+
+ /* Move any deferred results from a software fallback to the driver pixmap */
+ if (pExaScr->deferred_mixed_pixmap)
+ exaMoveInPixmap_mixed(pExaScr->deferred_mixed_pixmap);
+
+ unwrap(pExaScr, pScreen, BlockHandler);
+ (*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);
+ wrap(pExaScr, pScreen, BlockHandler, ExaBlockHandler);
+
+ /* The rest only applies to classic EXA */
+ if (pExaScr->info->flags & EXA_HANDLES_PIXMAPS)
+ return;
+
+ /* Try and keep the offscreen memory area tidy every now and then (at most
+ * once per second) when the server has been idle for at least 100ms.
+ */
+ if (pExaScr->numOffscreenAvailable > 1) {
+ CARD32 now = GetTimeInMillis();
+
+ pExaScr->nextDefragment = now +
+ max(100, (INT32)(pExaScr->lastDefragment + 1000 - now));
+ AdjustWaitForDelay(pTimeout, pExaScr->nextDefragment - now);
+ }
+}
+
+static void
+ExaWakeupHandler(int screenNum, pointer wakeupData, unsigned long result,
+ pointer pReadmask)
+{
+ ScreenPtr pScreen = screenInfo.screens[screenNum];
+ ExaScreenPriv(pScreen);
+
+ unwrap(pExaScr, pScreen, WakeupHandler);
+ (*pScreen->WakeupHandler) (screenNum, wakeupData, result, pReadmask);
+ wrap(pExaScr, pScreen, WakeupHandler, ExaWakeupHandler);
+
+ if (result == 0 && pExaScr->numOffscreenAvailable > 1) {
+ CARD32 now = GetTimeInMillis();
+
+ if ((int)(now - pExaScr->nextDefragment) > 0) {
+ ExaOffscreenDefragment(pScreen);
+ pExaScr->lastDefragment = now;
+ }
+ }
+}
+
+/**
+ * exaCloseScreen() unwraps its wrapped screen functions and tears down EXA's
+ * screen private, before calling down to the next CloseSccreen.
+ */
+static Bool
+exaCloseScreen(int i, ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+ PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
+
+ if (ps->Glyphs == exaGlyphs)
+ exaGlyphsFini(pScreen);
+
+ if (pScreen->BlockHandler == ExaBlockHandler)
+ unwrap(pExaScr, pScreen, BlockHandler);
+ if (pScreen->WakeupHandler == ExaWakeupHandler)
+ unwrap(pExaScr, pScreen, WakeupHandler);
+ unwrap(pExaScr, pScreen, CreateGC);
+ unwrap(pExaScr, pScreen, CloseScreen);
+ unwrap(pExaScr, pScreen, GetImage);
+ unwrap(pExaScr, pScreen, GetSpans);
+ if (pExaScr->SavedCreatePixmap)
+ unwrap(pExaScr, pScreen, CreatePixmap);
+ if (pExaScr->SavedDestroyPixmap)
+ unwrap(pExaScr, pScreen, DestroyPixmap);
+ if (pExaScr->SavedModifyPixmapHeader)
+ unwrap(pExaScr, pScreen, ModifyPixmapHeader);
+ unwrap(pExaScr, pScreen, CopyWindow);
+ unwrap(pExaScr, pScreen, ChangeWindowAttributes);
+ unwrap(pExaScr, pScreen, BitmapToRegion);
+ unwrap(pExaScr, pScreen, CreateScreenResources);
+ unwrap(pExaScr, ps, Composite);
+ if (pExaScr->SavedGlyphs)
+ unwrap(pExaScr, ps, Glyphs);
+ unwrap(pExaScr, ps, Trapezoids);
+ unwrap(pExaScr, ps, Triangles);
+ unwrap(pExaScr, ps, AddTraps);
+
+ free(pExaScr);
+
+ return (*pScreen->CloseScreen) (i, pScreen);
+}
+
+/**
+ * This function allocates a driver structure for EXA drivers to fill in. By
+ * having EXA allocate the structure, the driver structure can be extended
+ * without breaking ABI between EXA and the drivers. The driver's
+ * responsibility is to check beforehand that the EXA module has a matching
+ * major number and sufficient minor. Drivers are responsible for freeing the
+ * driver structure using free().
+ *
+ * @return a newly allocated, zero-filled driver structure
+ */
+ExaDriverPtr
+exaDriverAlloc(void)
+{
+ return calloc(1, sizeof(ExaDriverRec));
+}
+
+/**
+ * @param pScreen screen being initialized
+ * @param pScreenInfo EXA driver record
+ *
+ * exaDriverInit sets up EXA given a driver record filled in by the driver.
+ * pScreenInfo should have been allocated by exaDriverAlloc(). See the
+ * comments in _ExaDriver for what must be filled in and what is optional.
+ *
+ * @return TRUE if EXA was successfully initialized.
+ */
+Bool
+exaDriverInit (ScreenPtr pScreen,
+ ExaDriverPtr pScreenInfo)
+{
+ ExaScreenPrivPtr pExaScr;
+ PictureScreenPtr ps;
+
+ if (!pScreenInfo)
+ return FALSE;
+
+ if (pScreenInfo->exa_major != EXA_VERSION_MAJOR ||
+ pScreenInfo->exa_minor > EXA_VERSION_MINOR)
+ {
+ LogMessage(X_ERROR, "EXA(%d): driver's EXA version requirements "
+ "(%d.%d) are incompatible with EXA version (%d.%d)\n",
+ pScreen->myNum,
+ pScreenInfo->exa_major, pScreenInfo->exa_minor,
+ EXA_VERSION_MAJOR, EXA_VERSION_MINOR);
+ return FALSE;
+ }
+
+ if (!pScreenInfo->CreatePixmap && !pScreenInfo->CreatePixmap2) {
+ if (!pScreenInfo->memoryBase) {
+ LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::memoryBase "
+ "must be non-zero\n", pScreen->myNum);
+ return FALSE;
+ }
+
+ if (!pScreenInfo->memorySize) {
+ LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::memorySize must be "
+ "non-zero\n", pScreen->myNum);
+ return FALSE;
+ }
+
+ if (pScreenInfo->offScreenBase > pScreenInfo->memorySize) {
+ LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::offScreenBase must "
+ "be <= ExaDriverRec::memorySize\n", pScreen->myNum);
+ return FALSE;
+ }
+ }
+
+ if (!pScreenInfo->PrepareSolid) {
+ LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::PrepareSolid must be "
+ "non-NULL\n", pScreen->myNum);
+ return FALSE;
+ }
+
+ if (!pScreenInfo->PrepareCopy) {
+ LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::PrepareCopy must be "
+ "non-NULL\n", pScreen->myNum);
+ return FALSE;
+ }
+
+ if (!pScreenInfo->WaitMarker) {
+ LogMessage(X_ERROR, "EXA(%d): ExaDriverRec::WaitMarker must be "
+ "non-NULL\n", pScreen->myNum);
+ return FALSE;
+ }
+
+ /* If the driver doesn't set any max pitch values, we'll just assume
+ * that there's a limitation by pixels, and that it's the same as
+ * maxX.
+ *
+ * We want maxPitchPixels or maxPitchBytes to be set so we can check
+ * pixmaps against the max pitch in exaCreatePixmap() -- it matters
+ * whether a pixmap is rejected because of its pitch or
+ * because of its width.
+ */
+ if (!pScreenInfo->maxPitchPixels && !pScreenInfo->maxPitchBytes)
+ {
+ pScreenInfo->maxPitchPixels = pScreenInfo->maxX;
+ }
+
+ ps = GetPictureScreenIfSet(pScreen);
+
+ pExaScr = calloc(sizeof (ExaScreenPrivRec), 1);
+ if (!pExaScr) {
+ LogMessage(X_WARNING, "EXA(%d): Failed to allocate screen private\n",
+ pScreen->myNum);
+ return FALSE;
+ }
+
+ pExaScr->info = pScreenInfo;
+
+ dixSetPrivate(&pScreen->devPrivates, exaScreenPrivateKey, pExaScr);
+
+ pExaScr->migration = ExaMigrationAlways;
+
+ exaDDXDriverInit(pScreen);
+
+ if (!dixRequestPrivate(exaGCPrivateKey, sizeof(ExaGCPrivRec))) {
+ LogMessage(X_WARNING,
+ "EXA(%d): Failed to allocate GC private\n",
+ pScreen->myNum);
+ return FALSE;
+ }
+
+ /*
+ * Replace various fb screen functions
+ */
+ if ((pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS) &&
+ (!(pExaScr->info->flags & EXA_HANDLES_PIXMAPS) ||
+ (pExaScr->info->flags & EXA_MIXED_PIXMAPS)))
+ wrap(pExaScr, pScreen, BlockHandler, ExaBlockHandler);
+ if ((pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS) &&
+ !(pExaScr->info->flags & EXA_HANDLES_PIXMAPS))
+ wrap(pExaScr, pScreen, WakeupHandler, ExaWakeupHandler);
+ wrap(pExaScr, pScreen, CreateGC, exaCreateGC);
+ wrap(pExaScr, pScreen, CloseScreen, exaCloseScreen);
+ wrap(pExaScr, pScreen, GetImage, exaGetImage);
+ wrap(pExaScr, pScreen, GetSpans, ExaCheckGetSpans);
+ wrap(pExaScr, pScreen, CopyWindow, exaCopyWindow);
+ wrap(pExaScr, pScreen, ChangeWindowAttributes, exaChangeWindowAttributes);
+ wrap(pExaScr, pScreen, BitmapToRegion, exaBitmapToRegion);
+ wrap(pExaScr, pScreen, CreateScreenResources, exaCreateScreenResources);
+
+ if (ps) {
+ wrap(pExaScr, ps, Composite, exaComposite);
+ if (pScreenInfo->PrepareComposite)
+ wrap(pExaScr, ps, Glyphs, exaGlyphs);
+ wrap(pExaScr, ps, Trapezoids, exaTrapezoids);
+ wrap(pExaScr, ps, Triangles, exaTriangles);
+ wrap(pExaScr, ps, AddTraps, ExaCheckAddTraps);
+ }
+
+#ifdef MITSHM
+ /*
+ * Don't allow shared pixmaps.
+ */
+ ShmRegisterFuncs(pScreen, &exaShmFuncs);
+#endif
+ /*
+ * Hookup offscreen pixmaps
+ */
+ if (pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS)
+ {
+ if (!dixRequestPrivate(exaPixmapPrivateKey, sizeof(ExaPixmapPrivRec))) {
+ LogMessage(X_WARNING,
+ "EXA(%d): Failed to allocate pixmap private\n",
+ pScreen->myNum);
+ return FALSE;
+ }
+ if (pExaScr->info->flags & EXA_HANDLES_PIXMAPS) {
+ if (pExaScr->info->flags & EXA_MIXED_PIXMAPS) {
+ wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_mixed);
+ wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_mixed);
+ wrap(pExaScr, pScreen, ModifyPixmapHeader, exaModifyPixmapHeader_mixed);
+ pExaScr->do_migration = exaDoMigration_mixed;
+ pExaScr->pixmap_has_gpu_copy = exaPixmapHasGpuCopy_mixed;
+ pExaScr->do_move_in_pixmap = exaMoveInPixmap_mixed;
+ pExaScr->do_move_out_pixmap = NULL;
+ pExaScr->prepare_access_reg = exaPrepareAccessReg_mixed;
+ } else {
+ wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_driver);
+ wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_driver);
+ wrap(pExaScr, pScreen, ModifyPixmapHeader, exaModifyPixmapHeader_driver);
+ pExaScr->do_migration = NULL;
+ pExaScr->pixmap_has_gpu_copy = exaPixmapHasGpuCopy_driver;
+ pExaScr->do_move_in_pixmap = NULL;
+ pExaScr->do_move_out_pixmap = NULL;
+ pExaScr->prepare_access_reg = NULL;
+ }
+ } else {
+ wrap(pExaScr, pScreen, CreatePixmap, exaCreatePixmap_classic);
+ wrap(pExaScr, pScreen, DestroyPixmap, exaDestroyPixmap_classic);
+ wrap(pExaScr, pScreen, ModifyPixmapHeader, exaModifyPixmapHeader_classic);
+ pExaScr->do_migration = exaDoMigration_classic;
+ pExaScr->pixmap_has_gpu_copy = exaPixmapHasGpuCopy_classic;
+ pExaScr->do_move_in_pixmap = exaMoveInPixmap_classic;
+ pExaScr->do_move_out_pixmap = exaMoveOutPixmap_classic;
+ pExaScr->prepare_access_reg = exaPrepareAccessReg_classic;
+ }
+ if (!(pExaScr->info->flags & EXA_HANDLES_PIXMAPS)) {
+ LogMessage(X_INFO, "EXA(%d): Offscreen pixmap area of %lu bytes\n",
+ pScreen->myNum,
+ pExaScr->info->memorySize - pExaScr->info->offScreenBase);
+ } else {
+ LogMessage(X_INFO, "EXA(%d): Driver allocated offscreen pixmaps\n",
+ pScreen->myNum);
+
+ }
+ }
+ else
+ LogMessage(X_INFO, "EXA(%d): No offscreen pixmaps\n", pScreen->myNum);
+
+ if (!(pExaScr->info->flags & EXA_HANDLES_PIXMAPS)) {
+ DBG_PIXMAP(("============== %ld < %ld\n", pExaScr->info->offScreenBase,
+ pExaScr->info->memorySize));
+ if (pExaScr->info->offScreenBase < pExaScr->info->memorySize) {
+ if (!exaOffscreenInit (pScreen)) {
+ LogMessage(X_WARNING, "EXA(%d): Offscreen pixmap setup failed\n",
+ pScreen->myNum);
+ return FALSE;
+ }
+ }
+ }
+
+ if (ps->Glyphs == exaGlyphs)
+ exaGlyphsInit(pScreen);
+
+ LogMessage(X_INFO, "EXA(%d): Driver registered support for the following"
+ " operations:\n", pScreen->myNum);
+ assert(pScreenInfo->PrepareSolid != NULL);
+ LogMessage(X_INFO, " Solid\n");
+ assert(pScreenInfo->PrepareCopy != NULL);
+ LogMessage(X_INFO, " Copy\n");
+ if (pScreenInfo->PrepareComposite != NULL) {
+ LogMessage(X_INFO, " Composite (RENDER acceleration)\n");
+ }
+ if (pScreenInfo->UploadToScreen != NULL) {
+ LogMessage(X_INFO, " UploadToScreen\n");
+ }
+ if (pScreenInfo->DownloadFromScreen != NULL) {
+ LogMessage(X_INFO, " DownloadFromScreen\n");
+ }
+
+ return TRUE;
+}
+
+/**
+ * exaDriverFini tears down EXA on a given screen.
+ *
+ * @param pScreen screen being torn down.
+ */
+void
+exaDriverFini (ScreenPtr pScreen)
+{
+ /*right now does nothing*/
+}
+
+/**
+ * exaMarkSync() should be called after any asynchronous drawing by the hardware.
+ *
+ * @param pScreen screen which drawing occurred on
+ *
+ * exaMarkSync() sets a flag to indicate that some asynchronous drawing has
+ * happened and a WaitSync() will be necessary before relying on the contents of
+ * offscreen memory from the CPU's perspective. It also calls an optional
+ * driver MarkSync() callback, the return value of which may be used to do partial
+ * synchronization with the hardware in the future.
+ */
+void exaMarkSync(ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+
+ pExaScr->info->needsSync = TRUE;
+ if (pExaScr->info->MarkSync != NULL) {
+ pExaScr->info->lastMarker = (*pExaScr->info->MarkSync)(pScreen);
+ }
+}
+
+/**
+ * exaWaitSync() ensures that all drawing has been completed.
+ *
+ * @param pScreen screen being synchronized.
+ *
+ * Calls down into the driver to ensure that all previous drawing has completed.
+ * It should always be called before relying on the framebuffer contents
+ * reflecting previous drawing, from a CPU perspective.
+ */
+void exaWaitSync(ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+
+ if (pExaScr->info->needsSync && !pExaScr->swappedOut) {
+ (*pExaScr->info->WaitMarker)(pScreen, pExaScr->info->lastMarker);
+ pExaScr->info->needsSync = FALSE;
+ }
+}
+
+/**
+ * Performs migration of the pixmaps according to the operation information
+ * provided in pixmaps and can_accel and the migration scheme chosen in the
+ * config file.
+ */
+void
+exaDoMigration (ExaMigrationPtr pixmaps, int npixmaps, Bool can_accel)
+{
+ ScreenPtr pScreen = pixmaps[0].pPix->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+
+ if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
+ return;
+
+ if (pExaScr->do_migration)
+ (*pExaScr->do_migration)(pixmaps, npixmaps, can_accel);
+}
+
+void
+exaMoveInPixmap (PixmapPtr pPixmap)
+{
+ ScreenPtr pScreen = pPixmap->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+
+ if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
+ return;
+
+ if (pExaScr->do_move_in_pixmap)
+ (*pExaScr->do_move_in_pixmap)(pPixmap);
+}
+
+void
+exaMoveOutPixmap (PixmapPtr pPixmap)
+{
+ ScreenPtr pScreen = pPixmap->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+
+ if (!(pExaScr->info->flags & EXA_OFFSCREEN_PIXMAPS))
+ return;
+
+ if (pExaScr->do_move_out_pixmap)
+ (*pExaScr->do_move_out_pixmap)(pPixmap);
+}
diff --git a/xorg-server/exa/exa_accel.c b/xorg-server/exa/exa_accel.c
index 4823398b5..47f955da5 100644
--- a/xorg-server/exa/exa_accel.c
+++ b/xorg-server/exa/exa_accel.c
@@ -394,7 +394,7 @@ exaHWCopyNtoN (DrawablePtr pSrcDrawable,
exaGetDrawableDeltas (pSrcDrawable, pSrcPixmap, &src_off_x, &src_off_y);
exaGetDrawableDeltas (pDstDrawable, pDstPixmap, &dst_off_x, &dst_off_y);
- rects = xalloc(nbox * sizeof(xRectangle));
+ rects = malloc(nbox * sizeof(xRectangle));
if (rects) {
int i;
@@ -417,7 +417,7 @@ exaHWCopyNtoN (DrawablePtr pSrcDrawable,
ordering = CT_UNSORTED;
srcregion = RECTS_TO_REGION(pScreen, nbox, rects, ordering);
- xfree(rects);
+ free(rects);
if (!pGC || !exaGCReadsDestination(pDstDrawable, pGC->planemask,
pGC->fillStyle, pGC->alu,
@@ -626,7 +626,7 @@ exaPolyPoint(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
return;
}
- prect = xalloc(sizeof(xRectangle) * npt);
+ prect = malloc(sizeof(xRectangle) * npt);
for (i = 0; i < npt; i++) {
prect[i].x = ppt[i].x;
prect[i].y = ppt[i].y;
@@ -638,7 +638,7 @@ exaPolyPoint(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
prect[i].height = 1;
}
pGC->ops->PolyFillRect(pDrawable, pGC, npt, prect);
- xfree(prect);
+ free(prect);
}
/**
@@ -667,7 +667,7 @@ exaPolylines(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
return;
}
- prect = xalloc(sizeof(xRectangle) * (npt - 1));
+ prect = malloc(sizeof(xRectangle) * (npt - 1));
x1 = ppt[0].x;
y1 = ppt[0].y;
/* If we have any non-horizontal/vertical, fall back. */
@@ -681,7 +681,7 @@ exaPolylines(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
}
if (x1 != x2 && y1 != y2) {
- xfree(prect);
+ free(prect);
ExaCheckPolylines(pDrawable, pGC, mode, npt, ppt);
return;
}
@@ -705,7 +705,7 @@ exaPolylines(DrawablePtr pDrawable, GCPtr pGC, int mode, int npt,
y1 = y2;
}
pGC->ops->PolyFillRect(pDrawable, pGC, npt - 1, prect);
- xfree(prect);
+ free(prect);
}
/**
@@ -737,7 +737,7 @@ exaPolySegment (DrawablePtr pDrawable, GCPtr pGC, int nseg,
}
}
- prect = xalloc(sizeof(xRectangle) * nseg);
+ prect = malloc(sizeof(xRectangle) * nseg);
for (i = 0; i < nseg; i++) {
if (pSeg[i].x1 < pSeg[i].x2) {
prect[i].x = pSeg[i].x1;
@@ -763,7 +763,7 @@ exaPolySegment (DrawablePtr pDrawable, GCPtr pGC, int nseg,
}
}
pGC->ops->PolyFillRect(pDrawable, pGC, nseg, prect);
- xfree(prect);
+ free(prect);
}
static Bool exaFillRegionSolid (DrawablePtr pDrawable, RegionPtr pRegion,
diff --git a/xorg-server/exa/exa_glyphs.c b/xorg-server/exa/exa_glyphs.c
index fd14e9b87..36217dc59 100644
--- a/xorg-server/exa/exa_glyphs.c
+++ b/xorg-server/exa/exa_glyphs.c
@@ -1,867 +1,867 @@
-/*
- * Copyright © 2008 Red Hat, Inc.
- * Partly based on code Copyright © 2000 SuSE, Inc.
- *
- * 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, and that the name of Red Hat not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. Red Hat makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * Red Hat DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL Red Hat
- * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * 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, and that the name of SuSE not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. SuSE makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
- * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * Author: Owen Taylor <otaylor@fishsoup.net>
- * Based on code by: Keith Packard
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdlib.h>
-
-#include "exa_priv.h"
-
-#include "mipict.h"
-
-#if DEBUG_GLYPH_CACHE
-#define DBG_GLYPH_CACHE(a) ErrorF a
-#else
-#define DBG_GLYPH_CACHE(a)
-#endif
-
-/* Width of the pixmaps we use for the caches; this should be less than
- * max texture size of the driver; this may need to actually come from
- * the driver.
- */
-#define CACHE_PICTURE_WIDTH 1024
-
-/* Maximum number of glyphs we buffer on the stack before flushing
- * rendering to the mask or destination surface.
- */
-#define GLYPH_BUFFER_SIZE 256
-
-typedef struct {
- PicturePtr mask;
- ExaCompositeRectRec rects[GLYPH_BUFFER_SIZE];
- int count;
-} ExaGlyphBuffer, *ExaGlyphBufferPtr;
-
-typedef enum {
- ExaGlyphSuccess, /* Glyph added to render buffer */
- ExaGlyphFail, /* out of memory, etc */
- ExaGlyphNeedFlush, /* would evict a glyph already in the buffer */
-} ExaGlyphCacheResult;
-
-void
-exaGlyphsInit(ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
- int i = 0;
-
- memset(pExaScr->glyphCaches, 0, sizeof(pExaScr->glyphCaches));
-
- pExaScr->glyphCaches[i].format = PICT_a8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 16;
- i++;
- pExaScr->glyphCaches[i].format = PICT_a8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 32;
- i++;
- pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 16;
- i++;
- pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 32;
- i++;
-
- assert(i == EXA_NUM_GLYPH_CACHES);
-
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- pExaScr->glyphCaches[i].columns = CACHE_PICTURE_WIDTH / pExaScr->glyphCaches[i].glyphWidth;
- pExaScr->glyphCaches[i].size = 256;
- pExaScr->glyphCaches[i].hashSize = 557;
- }
-}
-
-static void
-exaUnrealizeGlyphCaches(ScreenPtr pScreen,
- unsigned int format)
-{
- ExaScreenPriv(pScreen);
- int i;
-
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
-
- if (cache->format != format)
- continue;
-
- if (cache->picture) {
- FreePicture ((pointer) cache->picture, (XID) 0);
- cache->picture = NULL;
- }
-
- if (cache->hashEntries) {
- xfree(cache->hashEntries);
- cache->hashEntries = NULL;
- }
-
- if (cache->glyphs) {
- xfree(cache->glyphs);
- cache->glyphs = NULL;
- }
- cache->glyphCount = 0;
- }
-}
-
-#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
-
-/* All caches for a single format share a single pixmap for glyph storage,
- * allowing mixing glyphs of different sizes without paying a penalty
- * for switching between mask pixmaps. (Note that for a size of font
- * right at the border between two sizes, we might be switching for almost
- * every glyph.)
- *
- * This function allocates the storage pixmap, and then fills in the
- * rest of the allocated structures for all caches with the given format.
- */
-static Bool
-exaRealizeGlyphCaches(ScreenPtr pScreen,
- unsigned int format)
-{
- ExaScreenPriv(pScreen);
-
- int depth = PIXMAN_FORMAT_DEPTH(format);
- PictFormatPtr pPictFormat;
- PixmapPtr pPixmap;
- PicturePtr pPicture;
- CARD32 component_alpha;
- int height;
- int i;
- int error;
-
- pPictFormat = PictureMatchFormat(pScreen, depth, format);
- if (!pPictFormat)
- return FALSE;
-
- /* Compute the total vertical size needed for the format */
-
- height = 0;
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
- int rows;
-
- if (cache->format != format)
- continue;
-
- cache->yOffset = height;
-
- rows = (cache->size + cache->columns - 1) / cache->columns;
- height += rows * cache->glyphHeight;
- }
-
- /* Now allocate the pixmap and picture */
- pPixmap = (*pScreen->CreatePixmap) (pScreen,
- CACHE_PICTURE_WIDTH,
- height, depth, 0);
- if (!pPixmap)
- return FALSE;
-
- component_alpha = NeedsComponent(pPictFormat->format);
- pPicture = CreatePicture(0, &pPixmap->drawable, pPictFormat,
- CPComponentAlpha, &component_alpha, serverClient,
- &error);
-
- (*pScreen->DestroyPixmap) (pPixmap); /* picture holds a refcount */
-
- if (!pPicture)
- return FALSE;
-
- /* And store the picture in all the caches for the format */
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
- int j;
-
- if (cache->format != format)
- continue;
-
- cache->picture = pPicture;
- cache->picture->refcnt++;
- cache->hashEntries = xalloc(sizeof(int) * cache->hashSize);
- cache->glyphs = xalloc(sizeof(ExaCachedGlyphRec) * cache->size);
- cache->glyphCount = 0;
-
- if (!cache->hashEntries || !cache->glyphs)
- goto bail;
-
- for (j = 0; j < cache->hashSize; j++)
- cache->hashEntries[j] = -1;
-
- cache->evictionPosition = rand() % cache->size;
- }
-
- /* Each cache references the picture individually */
- FreePicture ((pointer) pPicture, (XID) 0);
- return TRUE;
-
-bail:
- exaUnrealizeGlyphCaches(pScreen, format);
- return FALSE;
-}
-
-void
-exaGlyphsFini (ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
- int i;
-
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
-
- if (cache->picture)
- exaUnrealizeGlyphCaches(pScreen, cache->format);
- }
-}
-
-static int
-exaGlyphCacheHashLookup(ExaGlyphCachePtr cache,
- GlyphPtr pGlyph)
-{
- int slot;
-
- slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
-
- while (TRUE) { /* hash table can never be full */
- int entryPos = cache->hashEntries[slot];
- if (entryPos == -1)
- return -1;
-
- if (memcmp(pGlyph->sha1, cache->glyphs[entryPos].sha1, sizeof(pGlyph->sha1)) == 0){
- return entryPos;
- }
-
- slot--;
- if (slot < 0)
- slot = cache->hashSize - 1;
- }
-}
-
-static void
-exaGlyphCacheHashInsert(ExaGlyphCachePtr cache,
- GlyphPtr pGlyph,
- int pos)
-{
- int slot;
-
- memcpy(cache->glyphs[pos].sha1, pGlyph->sha1, sizeof(pGlyph->sha1));
-
- slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
-
- while (TRUE) { /* hash table can never be full */
- if (cache->hashEntries[slot] == -1) {
- cache->hashEntries[slot] = pos;
- return;
- }
-
- slot--;
- if (slot < 0)
- slot = cache->hashSize - 1;
- }
-}
-
-static void
-exaGlyphCacheHashRemove(ExaGlyphCachePtr cache,
- int pos)
-{
- int slot;
- int emptiedSlot = -1;
-
- slot = (*(CARD32 *) cache->glyphs[pos].sha1) % cache->hashSize;
-
- while (TRUE) { /* hash table can never be full */
- int entryPos = cache->hashEntries[slot];
-
- if (entryPos == -1)
- return;
-
- if (entryPos == pos) {
- cache->hashEntries[slot] = -1;
- emptiedSlot = slot;
- } else if (emptiedSlot != -1) {
- /* See if we can move this entry into the emptied slot, we can't
- * do that if if entry would have hashed between the current position
- * and the emptied slot. (taking wrapping into account). Bad positions
- * are:
- *
- * | XXXXXXXXXX |
- * i j
- *
- * |XXX XXXX|
- * j i
- *
- * i - slot, j - emptiedSlot
- *
- * (Knuth 6.4R)
- */
-
- int entrySlot = (*(CARD32 *) cache->glyphs[entryPos].sha1) % cache->hashSize;
-
- if (!((entrySlot >= slot && entrySlot < emptiedSlot) ||
- (emptiedSlot < slot && (entrySlot < emptiedSlot || entrySlot >= slot))))
- {
- cache->hashEntries[emptiedSlot] = entryPos;
- cache->hashEntries[slot] = -1;
- emptiedSlot = slot;
- }
- }
-
- slot--;
- if (slot < 0)
- slot = cache->hashSize - 1;
- }
-}
-
-#define CACHE_X(pos) (((pos) % cache->columns) * cache->glyphWidth)
-#define CACHE_Y(pos) (cache->yOffset + ((pos) / cache->columns) * cache->glyphHeight)
-
-/* The most efficient thing to way to upload the glyph to the screen
- * is to use the UploadToScreen() driver hook; this allows us to
- * pipeline glyph uploads and to avoid creating gpu backed pixmaps for
- * glyphs that we'll never use again.
- *
- * If we can't do it with UploadToScreen (because the glyph has a gpu copy,
- * etc), we fall back to CompositePicture.
- *
- * We need to damage the cache pixmap manually in either case because the damage
- * layer unwrapped the picture screen before calling exaGlyphs.
- */
-static void
-exaGlyphCacheUploadGlyph(ScreenPtr pScreen,
- ExaGlyphCachePtr cache,
- int x,
- int y,
- GlyphPtr pGlyph)
-{
- ExaScreenPriv(pScreen);
- PicturePtr pGlyphPicture = GlyphPicture(pGlyph)[pScreen->myNum];
- PixmapPtr pGlyphPixmap = (PixmapPtr)pGlyphPicture->pDrawable;
- ExaPixmapPriv(pGlyphPixmap);
- PixmapPtr pCachePixmap = (PixmapPtr)cache->picture->pDrawable;
-
- if (!pExaScr->info->UploadToScreen || pExaScr->swappedOut || pExaPixmap->accel_blocked)
- goto composite;
-
- /* If the glyph pixmap is already uploaded, no point in doing
- * things this way */
- if (exaPixmapHasGpuCopy(pGlyphPixmap))
- goto composite;
-
- /* UploadToScreen only works if bpp match */
- if (pGlyphPixmap->drawable.bitsPerPixel != pCachePixmap->drawable.bitsPerPixel)
- goto composite;
-
- if (pExaScr->do_migration) {
- ExaMigrationRec pixmaps[1];
-
- /* cache pixmap must have a gpu copy. */
- pixmaps[0].as_dst = TRUE;
- pixmaps[0].as_src = FALSE;
- pixmaps[0].pPix = pCachePixmap;
- pixmaps[0].pReg = NULL;
- exaDoMigration (pixmaps, 1, TRUE);
- }
-
- if (!exaPixmapHasGpuCopy(pCachePixmap))
- goto composite;
-
- /* x,y are in pixmap coordinates, no need for cache{X,Y}off */
- if (pExaScr->info->UploadToScreen(pCachePixmap,
- x,
- y,
- pGlyph->info.width,
- pGlyph->info.height,
- (char *)pExaPixmap->sys_ptr,
- pExaPixmap->sys_pitch))
- goto damage;
-
-composite:
- CompositePicture (PictOpSrc,
- pGlyphPicture,
- None,
- cache->picture,
- 0, 0,
- 0, 0,
- x,
- y,
- pGlyph->info.width,
- pGlyph->info.height);
-
-damage:
- /* The cache pixmap isn't a window, so no need to offset coordinates. */
- exaPixmapDirty (pCachePixmap,
- x,
- y,
- x + cache->glyphWidth,
- y + cache->glyphHeight);
-}
-
-static ExaGlyphCacheResult
-exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
- ExaGlyphCachePtr cache,
- ExaGlyphBufferPtr buffer,
- GlyphPtr pGlyph,
- PicturePtr pSrc,
- PicturePtr pDst,
- INT16 xSrc,
- INT16 ySrc,
- INT16 xMask,
- INT16 yMask,
- INT16 xDst,
- INT16 yDst)
-{
- ExaCompositeRectPtr rect;
- int pos;
- int x, y;
-
- if (buffer->mask && buffer->mask != cache->picture)
- return ExaGlyphNeedFlush;
-
- if (!cache->picture) {
- if (!exaRealizeGlyphCaches(pScreen, cache->format))
- return ExaGlyphFail;
- }
-
- DBG_GLYPH_CACHE(("(%d,%d,%s): buffering glyph %lx\n",
- cache->glyphWidth, cache->glyphHeight, cache->format == PICT_a8 ? "A" : "ARGB",
- (long)*(CARD32 *) pGlyph->sha1));
-
- pos = exaGlyphCacheHashLookup(cache, pGlyph);
- if (pos != -1) {
- DBG_GLYPH_CACHE((" found existing glyph at %d\n", pos));
- x = CACHE_X(pos);
- y = CACHE_Y(pos);
- } else {
- if (cache->glyphCount < cache->size) {
- /* Space remaining; we fill from the start */
- pos = cache->glyphCount;
- x = CACHE_X(pos);
- y = CACHE_Y(pos);
- cache->glyphCount++;
- DBG_GLYPH_CACHE((" storing glyph in free space at %d\n", pos));
-
- exaGlyphCacheHashInsert(cache, pGlyph, pos);
-
- } else {
- /* Need to evict an entry. We have to see if any glyphs
- * already in the output buffer were at this position in
- * the cache
- */
- pos = cache->evictionPosition;
- x = CACHE_X(pos);
- y = CACHE_Y(pos);
- DBG_GLYPH_CACHE((" evicting glyph at %d\n", pos));
- if (buffer->count) {
- int i;
-
- for (i = 0; i < buffer->count; i++) {
- if (pSrc ?
- (buffer->rects[i].xMask == x && buffer->rects[i].yMask == y) :
- (buffer->rects[i].xSrc == x && buffer->rects[i].ySrc == y)) {
- DBG_GLYPH_CACHE((" must flush buffer\n"));
- return ExaGlyphNeedFlush;
- }
- }
- }
-
- /* OK, we're all set, swap in the new glyph */
- exaGlyphCacheHashRemove(cache, pos);
- exaGlyphCacheHashInsert(cache, pGlyph, pos);
-
- /* And pick a new eviction position */
- cache->evictionPosition = rand() % cache->size;
- }
-
- exaGlyphCacheUploadGlyph(pScreen, cache, x, y, pGlyph);
- }
-
- buffer->mask = cache->picture;
-
- rect = &buffer->rects[buffer->count];
-
- if (pSrc)
- {
- rect->xSrc = xSrc;
- rect->ySrc = ySrc;
- rect->xMask = x;
- rect->yMask = y;
- }
- else
- {
- rect->xSrc = x;
- rect->ySrc = y;
- rect->xMask = 0;
- rect->yMask = 0;
- }
-
- rect->pDst = pDst;
- rect->xDst = xDst;
- rect->yDst = yDst;
- rect->width = pGlyph->info.width;
- rect->height = pGlyph->info.height;
-
- buffer->count++;
-
- return ExaGlyphSuccess;
-}
-
-#undef CACHE_X
-#undef CACHE_Y
-
-static ExaGlyphCacheResult
-exaBufferGlyph(ScreenPtr pScreen,
- ExaGlyphBufferPtr buffer,
- GlyphPtr pGlyph,
- PicturePtr pSrc,
- PicturePtr pDst,
- INT16 xSrc,
- INT16 ySrc,
- INT16 xMask,
- INT16 yMask,
- INT16 xDst,
- INT16 yDst)
-{
- ExaScreenPriv(pScreen);
- unsigned int format = (GlyphPicture(pGlyph)[pScreen->myNum])->format;
- int width = pGlyph->info.width;
- int height = pGlyph->info.height;
- ExaCompositeRectPtr rect;
- PicturePtr mask;
- int i;
-
- if (buffer->count == GLYPH_BUFFER_SIZE)
- return ExaGlyphNeedFlush;
-
- if (PICT_FORMAT_BPP(format) == 1)
- format = PICT_a8;
-
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
-
- if (format == cache->format &&
- width <= cache->glyphWidth &&
- height <= cache->glyphHeight) {
- ExaGlyphCacheResult result = exaGlyphCacheBufferGlyph(pScreen,
- &pExaScr->glyphCaches[i],
- buffer,
- pGlyph,
- pSrc,
- pDst,
- xSrc, ySrc,
- xMask, yMask,
- xDst, yDst);
- switch (result) {
- case ExaGlyphFail:
- break;
- case ExaGlyphSuccess:
- case ExaGlyphNeedFlush:
- return result;
- }
- }
- }
-
- /* Couldn't find the glyph in the cache, use the glyph picture directly */
-
- mask = GlyphPicture(pGlyph)[pScreen->myNum];
- if (buffer->mask && buffer->mask != mask)
- return ExaGlyphNeedFlush;
-
- buffer->mask = mask;
-
- rect = &buffer->rects[buffer->count];
- rect->xSrc = xSrc;
- rect->ySrc = ySrc;
- rect->xMask = xMask;
- rect->yMask = yMask;
- rect->xDst = xDst;
- rect->yDst = yDst;
- rect->width = width;
- rect->height = height;
-
- buffer->count++;
-
- return ExaGlyphSuccess;
-}
-
-static void
-exaGlyphsToMask(PicturePtr pMask,
- ExaGlyphBufferPtr buffer)
-{
- exaCompositeRects(PictOpAdd, buffer->mask, NULL, pMask,
- buffer->count, buffer->rects);
-
- buffer->count = 0;
- buffer->mask = NULL;
-}
-
-static void
-exaGlyphsToDst(PicturePtr pSrc,
- PicturePtr pDst,
- ExaGlyphBufferPtr buffer)
-{
- exaCompositeRects(PictOpOver, pSrc, buffer->mask, pDst, buffer->count,
- buffer->rects);
-
- buffer->count = 0;
- buffer->mask = NULL;
-}
-
-/* Cut and paste from render/glyph.c - probably should export it instead */
-static void
-GlyphExtents (int nlist,
- GlyphListPtr list,
- GlyphPtr *glyphs,
- BoxPtr extents)
-{
- int x1, x2, y1, y2;
- int n;
- GlyphPtr glyph;
- int x, y;
-
- x = 0;
- y = 0;
- extents->x1 = MAXSHORT;
- extents->x2 = MINSHORT;
- extents->y1 = MAXSHORT;
- extents->y2 = MINSHORT;
- while (nlist--)
- {
- x += list->xOff;
- y += list->yOff;
- n = list->len;
- list++;
- while (n--)
- {
- glyph = *glyphs++;
- x1 = x - glyph->info.x;
- if (x1 < MINSHORT)
- x1 = MINSHORT;
- y1 = y - glyph->info.y;
- if (y1 < MINSHORT)
- y1 = MINSHORT;
- x2 = x1 + glyph->info.width;
- if (x2 > MAXSHORT)
- x2 = MAXSHORT;
- y2 = y1 + glyph->info.height;
- if (y2 > MAXSHORT)
- y2 = MAXSHORT;
- if (x1 < extents->x1)
- extents->x1 = x1;
- if (x2 > extents->x2)
- extents->x2 = x2;
- if (y1 < extents->y1)
- extents->y1 = y1;
- if (y2 > extents->y2)
- extents->y2 = y2;
- x += glyph->info.xOff;
- y += glyph->info.yOff;
- }
- }
-}
-
-void
-exaGlyphs (CARD8 op,
- PicturePtr pSrc,
- PicturePtr pDst,
- PictFormatPtr maskFormat,
- INT16 xSrc,
- INT16 ySrc,
- int nlist,
- GlyphListPtr list,
- GlyphPtr *glyphs)
-{
- PixmapPtr pMaskPixmap = 0;
- PicturePtr pMask = NULL;
- ScreenPtr pScreen = pDst->pDrawable->pScreen;
- int width = 0, height = 0;
- int x, y;
- int first_xOff = list->xOff, first_yOff = list->yOff;
- int n;
- GlyphPtr glyph;
- int error;
- BoxRec extents = {0, 0, 0, 0};
- CARD32 component_alpha;
- ExaGlyphBuffer buffer;
-
- if (maskFormat)
- {
- ExaScreenPriv(pScreen);
- GCPtr pGC;
- xRectangle rect;
-
- GlyphExtents (nlist, list, glyphs, &extents);
-
- if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
- return;
- width = extents.x2 - extents.x1;
- height = extents.y2 - extents.y1;
-
- if (maskFormat->depth == 1) {
- PictFormatPtr a8Format = PictureMatchFormat (pScreen, 8, PICT_a8);
-
- if (a8Format)
- maskFormat = a8Format;
- }
-
- pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
- maskFormat->depth,
- CREATE_PIXMAP_USAGE_SCRATCH);
- if (!pMaskPixmap)
- return;
- component_alpha = NeedsComponent(maskFormat->format);
- pMask = CreatePicture (0, &pMaskPixmap->drawable,
- maskFormat, CPComponentAlpha, &component_alpha,
- serverClient, &error);
- if (!pMask ||
- (!component_alpha && pExaScr->info->CheckComposite &&
- !(*pExaScr->info->CheckComposite) (PictOpAdd, pSrc, NULL, pMask)))
- {
- PictFormatPtr argbFormat;
-
- (*pScreen->DestroyPixmap) (pMaskPixmap);
-
- if (!pMask)
- return;
-
- /* The driver can't seem to composite to a8, let's try argb (but
- * without component-alpha) */
- FreePicture ((pointer) pMask, (XID) 0);
-
- argbFormat = PictureMatchFormat (pScreen, 32, PICT_a8r8g8b8);
-
- if (argbFormat)
- maskFormat = argbFormat;
-
- pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
- maskFormat->depth,
- CREATE_PIXMAP_USAGE_SCRATCH);
- if (!pMaskPixmap)
- return;
-
- pMask = CreatePicture (0, &pMaskPixmap->drawable, maskFormat, 0, 0,
- serverClient, &error);
- if (!pMask) {
- (*pScreen->DestroyPixmap) (pMaskPixmap);
- return;
- }
- }
- pGC = GetScratchGC (pMaskPixmap->drawable.depth, pScreen);
- ValidateGC (&pMaskPixmap->drawable, pGC);
- rect.x = 0;
- rect.y = 0;
- rect.width = width;
- rect.height = height;
- (*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect);
- FreeScratchGC (pGC);
- x = -extents.x1;
- y = -extents.y1;
- }
- else
- {
- x = 0;
- y = 0;
- }
- buffer.count = 0;
- buffer.mask = NULL;
- while (nlist--)
- {
- x += list->xOff;
- y += list->yOff;
- n = list->len;
- while (n--)
- {
- glyph = *glyphs++;
-
- if (glyph->info.width > 0 && glyph->info.height > 0)
- {
- /* pGlyph->info.{x,y} compensate for empty space in the glyph. */
- if (maskFormat)
- {
- if (exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask,
- 0, 0, 0, 0, x - glyph->info.x, y - glyph->info.y) == ExaGlyphNeedFlush)
- {
- exaGlyphsToMask(pMask, &buffer);
- exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask,
- 0, 0, 0, 0, x - glyph->info.x, y - glyph->info.y);
- }
- }
- else
- {
- if (exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst,
- xSrc + (x - glyph->info.x) - first_xOff, ySrc + (y - glyph->info.y) - first_yOff,
- 0, 0, x - glyph->info.x, y - glyph->info.y)
- == ExaGlyphNeedFlush)
- {
- exaGlyphsToDst(pSrc, pDst, &buffer);
- exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst,
- xSrc + (x - glyph->info.x) - first_xOff, ySrc + (y - glyph->info.y) - first_yOff,
- 0, 0, x - glyph->info.x, y - glyph->info.y);
- }
- }
- }
-
- x += glyph->info.xOff;
- y += glyph->info.yOff;
- }
- list++;
- }
-
- if (buffer.count) {
- if (maskFormat)
- exaGlyphsToMask(pMask, &buffer);
- else
- exaGlyphsToDst(pSrc, pDst, &buffer);
- }
-
- if (maskFormat)
- {
- x = extents.x1;
- y = extents.y1;
- CompositePicture (op,
- pSrc,
- pMask,
- pDst,
- xSrc + x - first_xOff,
- ySrc + y - first_yOff,
- 0, 0,
- x, y,
- width, height);
- FreePicture ((pointer) pMask, (XID) 0);
- (*pScreen->DestroyPixmap) (pMaskPixmap);
- }
-}
+/*
+ * Copyright © 2008 Red Hat, Inc.
+ * Partly based on code Copyright © 2000 SuSE, Inc.
+ *
+ * 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, and that the name of Red Hat not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. Red Hat makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * Red Hat DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL Red Hat
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * 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, and that the name of SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. SuSE makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Owen Taylor <otaylor@fishsoup.net>
+ * Based on code by: Keith Packard
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdlib.h>
+
+#include "exa_priv.h"
+
+#include "mipict.h"
+
+#if DEBUG_GLYPH_CACHE
+#define DBG_GLYPH_CACHE(a) ErrorF a
+#else
+#define DBG_GLYPH_CACHE(a)
+#endif
+
+/* Width of the pixmaps we use for the caches; this should be less than
+ * max texture size of the driver; this may need to actually come from
+ * the driver.
+ */
+#define CACHE_PICTURE_WIDTH 1024
+
+/* Maximum number of glyphs we buffer on the stack before flushing
+ * rendering to the mask or destination surface.
+ */
+#define GLYPH_BUFFER_SIZE 256
+
+typedef struct {
+ PicturePtr mask;
+ ExaCompositeRectRec rects[GLYPH_BUFFER_SIZE];
+ int count;
+} ExaGlyphBuffer, *ExaGlyphBufferPtr;
+
+typedef enum {
+ ExaGlyphSuccess, /* Glyph added to render buffer */
+ ExaGlyphFail, /* out of memory, etc */
+ ExaGlyphNeedFlush, /* would evict a glyph already in the buffer */
+} ExaGlyphCacheResult;
+
+void
+exaGlyphsInit(ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+ int i = 0;
+
+ memset(pExaScr->glyphCaches, 0, sizeof(pExaScr->glyphCaches));
+
+ pExaScr->glyphCaches[i].format = PICT_a8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 16;
+ i++;
+ pExaScr->glyphCaches[i].format = PICT_a8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 32;
+ i++;
+ pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 16;
+ i++;
+ pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 32;
+ i++;
+
+ assert(i == EXA_NUM_GLYPH_CACHES);
+
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ pExaScr->glyphCaches[i].columns = CACHE_PICTURE_WIDTH / pExaScr->glyphCaches[i].glyphWidth;
+ pExaScr->glyphCaches[i].size = 256;
+ pExaScr->glyphCaches[i].hashSize = 557;
+ }
+}
+
+static void
+exaUnrealizeGlyphCaches(ScreenPtr pScreen,
+ unsigned int format)
+{
+ ExaScreenPriv(pScreen);
+ int i;
+
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+
+ if (cache->format != format)
+ continue;
+
+ if (cache->picture) {
+ FreePicture ((pointer) cache->picture, (XID) 0);
+ cache->picture = NULL;
+ }
+
+ if (cache->hashEntries) {
+ free(cache->hashEntries);
+ cache->hashEntries = NULL;
+ }
+
+ if (cache->glyphs) {
+ free(cache->glyphs);
+ cache->glyphs = NULL;
+ }
+ cache->glyphCount = 0;
+ }
+}
+
+#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
+
+/* All caches for a single format share a single pixmap for glyph storage,
+ * allowing mixing glyphs of different sizes without paying a penalty
+ * for switching between mask pixmaps. (Note that for a size of font
+ * right at the border between two sizes, we might be switching for almost
+ * every glyph.)
+ *
+ * This function allocates the storage pixmap, and then fills in the
+ * rest of the allocated structures for all caches with the given format.
+ */
+static Bool
+exaRealizeGlyphCaches(ScreenPtr pScreen,
+ unsigned int format)
+{
+ ExaScreenPriv(pScreen);
+
+ int depth = PIXMAN_FORMAT_DEPTH(format);
+ PictFormatPtr pPictFormat;
+ PixmapPtr pPixmap;
+ PicturePtr pPicture;
+ CARD32 component_alpha;
+ int height;
+ int i;
+ int error;
+
+ pPictFormat = PictureMatchFormat(pScreen, depth, format);
+ if (!pPictFormat)
+ return FALSE;
+
+ /* Compute the total vertical size needed for the format */
+
+ height = 0;
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+ int rows;
+
+ if (cache->format != format)
+ continue;
+
+ cache->yOffset = height;
+
+ rows = (cache->size + cache->columns - 1) / cache->columns;
+ height += rows * cache->glyphHeight;
+ }
+
+ /* Now allocate the pixmap and picture */
+ pPixmap = (*pScreen->CreatePixmap) (pScreen,
+ CACHE_PICTURE_WIDTH,
+ height, depth, 0);
+ if (!pPixmap)
+ return FALSE;
+
+ component_alpha = NeedsComponent(pPictFormat->format);
+ pPicture = CreatePicture(0, &pPixmap->drawable, pPictFormat,
+ CPComponentAlpha, &component_alpha, serverClient,
+ &error);
+
+ (*pScreen->DestroyPixmap) (pPixmap); /* picture holds a refcount */
+
+ if (!pPicture)
+ return FALSE;
+
+ /* And store the picture in all the caches for the format */
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+ int j;
+
+ if (cache->format != format)
+ continue;
+
+ cache->picture = pPicture;
+ cache->picture->refcnt++;
+ cache->hashEntries = malloc(sizeof(int) * cache->hashSize);
+ cache->glyphs = malloc(sizeof(ExaCachedGlyphRec) * cache->size);
+ cache->glyphCount = 0;
+
+ if (!cache->hashEntries || !cache->glyphs)
+ goto bail;
+
+ for (j = 0; j < cache->hashSize; j++)
+ cache->hashEntries[j] = -1;
+
+ cache->evictionPosition = rand() % cache->size;
+ }
+
+ /* Each cache references the picture individually */
+ FreePicture ((pointer) pPicture, (XID) 0);
+ return TRUE;
+
+bail:
+ exaUnrealizeGlyphCaches(pScreen, format);
+ return FALSE;
+}
+
+void
+exaGlyphsFini (ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+ int i;
+
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+
+ if (cache->picture)
+ exaUnrealizeGlyphCaches(pScreen, cache->format);
+ }
+}
+
+static int
+exaGlyphCacheHashLookup(ExaGlyphCachePtr cache,
+ GlyphPtr pGlyph)
+{
+ int slot;
+
+ slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
+
+ while (TRUE) { /* hash table can never be full */
+ int entryPos = cache->hashEntries[slot];
+ if (entryPos == -1)
+ return -1;
+
+ if (memcmp(pGlyph->sha1, cache->glyphs[entryPos].sha1, sizeof(pGlyph->sha1)) == 0){
+ return entryPos;
+ }
+
+ slot--;
+ if (slot < 0)
+ slot = cache->hashSize - 1;
+ }
+}
+
+static void
+exaGlyphCacheHashInsert(ExaGlyphCachePtr cache,
+ GlyphPtr pGlyph,
+ int pos)
+{
+ int slot;
+
+ memcpy(cache->glyphs[pos].sha1, pGlyph->sha1, sizeof(pGlyph->sha1));
+
+ slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
+
+ while (TRUE) { /* hash table can never be full */
+ if (cache->hashEntries[slot] == -1) {
+ cache->hashEntries[slot] = pos;
+ return;
+ }
+
+ slot--;
+ if (slot < 0)
+ slot = cache->hashSize - 1;
+ }
+}
+
+static void
+exaGlyphCacheHashRemove(ExaGlyphCachePtr cache,
+ int pos)
+{
+ int slot;
+ int emptiedSlot = -1;
+
+ slot = (*(CARD32 *) cache->glyphs[pos].sha1) % cache->hashSize;
+
+ while (TRUE) { /* hash table can never be full */
+ int entryPos = cache->hashEntries[slot];
+
+ if (entryPos == -1)
+ return;
+
+ if (entryPos == pos) {
+ cache->hashEntries[slot] = -1;
+ emptiedSlot = slot;
+ } else if (emptiedSlot != -1) {
+ /* See if we can move this entry into the emptied slot, we can't
+ * do that if if entry would have hashed between the current position
+ * and the emptied slot. (taking wrapping into account). Bad positions
+ * are:
+ *
+ * | XXXXXXXXXX |
+ * i j
+ *
+ * |XXX XXXX|
+ * j i
+ *
+ * i - slot, j - emptiedSlot
+ *
+ * (Knuth 6.4R)
+ */
+
+ int entrySlot = (*(CARD32 *) cache->glyphs[entryPos].sha1) % cache->hashSize;
+
+ if (!((entrySlot >= slot && entrySlot < emptiedSlot) ||
+ (emptiedSlot < slot && (entrySlot < emptiedSlot || entrySlot >= slot))))
+ {
+ cache->hashEntries[emptiedSlot] = entryPos;
+ cache->hashEntries[slot] = -1;
+ emptiedSlot = slot;
+ }
+ }
+
+ slot--;
+ if (slot < 0)
+ slot = cache->hashSize - 1;
+ }
+}
+
+#define CACHE_X(pos) (((pos) % cache->columns) * cache->glyphWidth)
+#define CACHE_Y(pos) (cache->yOffset + ((pos) / cache->columns) * cache->glyphHeight)
+
+/* The most efficient thing to way to upload the glyph to the screen
+ * is to use the UploadToScreen() driver hook; this allows us to
+ * pipeline glyph uploads and to avoid creating gpu backed pixmaps for
+ * glyphs that we'll never use again.
+ *
+ * If we can't do it with UploadToScreen (because the glyph has a gpu copy,
+ * etc), we fall back to CompositePicture.
+ *
+ * We need to damage the cache pixmap manually in either case because the damage
+ * layer unwrapped the picture screen before calling exaGlyphs.
+ */
+static void
+exaGlyphCacheUploadGlyph(ScreenPtr pScreen,
+ ExaGlyphCachePtr cache,
+ int x,
+ int y,
+ GlyphPtr pGlyph)
+{
+ ExaScreenPriv(pScreen);
+ PicturePtr pGlyphPicture = GlyphPicture(pGlyph)[pScreen->myNum];
+ PixmapPtr pGlyphPixmap = (PixmapPtr)pGlyphPicture->pDrawable;
+ ExaPixmapPriv(pGlyphPixmap);
+ PixmapPtr pCachePixmap = (PixmapPtr)cache->picture->pDrawable;
+
+ if (!pExaScr->info->UploadToScreen || pExaScr->swappedOut || pExaPixmap->accel_blocked)
+ goto composite;
+
+ /* If the glyph pixmap is already uploaded, no point in doing
+ * things this way */
+ if (exaPixmapHasGpuCopy(pGlyphPixmap))
+ goto composite;
+
+ /* UploadToScreen only works if bpp match */
+ if (pGlyphPixmap->drawable.bitsPerPixel != pCachePixmap->drawable.bitsPerPixel)
+ goto composite;
+
+ if (pExaScr->do_migration) {
+ ExaMigrationRec pixmaps[1];
+
+ /* cache pixmap must have a gpu copy. */
+ pixmaps[0].as_dst = TRUE;
+ pixmaps[0].as_src = FALSE;
+ pixmaps[0].pPix = pCachePixmap;
+ pixmaps[0].pReg = NULL;
+ exaDoMigration (pixmaps, 1, TRUE);
+ }
+
+ if (!exaPixmapHasGpuCopy(pCachePixmap))
+ goto composite;
+
+ /* x,y are in pixmap coordinates, no need for cache{X,Y}off */
+ if (pExaScr->info->UploadToScreen(pCachePixmap,
+ x,
+ y,
+ pGlyph->info.width,
+ pGlyph->info.height,
+ (char *)pExaPixmap->sys_ptr,
+ pExaPixmap->sys_pitch))
+ goto damage;
+
+composite:
+ CompositePicture (PictOpSrc,
+ pGlyphPicture,
+ None,
+ cache->picture,
+ 0, 0,
+ 0, 0,
+ x,
+ y,
+ pGlyph->info.width,
+ pGlyph->info.height);
+
+damage:
+ /* The cache pixmap isn't a window, so no need to offset coordinates. */
+ exaPixmapDirty (pCachePixmap,
+ x,
+ y,
+ x + cache->glyphWidth,
+ y + cache->glyphHeight);
+}
+
+static ExaGlyphCacheResult
+exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
+ ExaGlyphCachePtr cache,
+ ExaGlyphBufferPtr buffer,
+ GlyphPtr pGlyph,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ INT16 xSrc,
+ INT16 ySrc,
+ INT16 xMask,
+ INT16 yMask,
+ INT16 xDst,
+ INT16 yDst)
+{
+ ExaCompositeRectPtr rect;
+ int pos;
+ int x, y;
+
+ if (buffer->mask && buffer->mask != cache->picture)
+ return ExaGlyphNeedFlush;
+
+ if (!cache->picture) {
+ if (!exaRealizeGlyphCaches(pScreen, cache->format))
+ return ExaGlyphFail;
+ }
+
+ DBG_GLYPH_CACHE(("(%d,%d,%s): buffering glyph %lx\n",
+ cache->glyphWidth, cache->glyphHeight, cache->format == PICT_a8 ? "A" : "ARGB",
+ (long)*(CARD32 *) pGlyph->sha1));
+
+ pos = exaGlyphCacheHashLookup(cache, pGlyph);
+ if (pos != -1) {
+ DBG_GLYPH_CACHE((" found existing glyph at %d\n", pos));
+ x = CACHE_X(pos);
+ y = CACHE_Y(pos);
+ } else {
+ if (cache->glyphCount < cache->size) {
+ /* Space remaining; we fill from the start */
+ pos = cache->glyphCount;
+ x = CACHE_X(pos);
+ y = CACHE_Y(pos);
+ cache->glyphCount++;
+ DBG_GLYPH_CACHE((" storing glyph in free space at %d\n", pos));
+
+ exaGlyphCacheHashInsert(cache, pGlyph, pos);
+
+ } else {
+ /* Need to evict an entry. We have to see if any glyphs
+ * already in the output buffer were at this position in
+ * the cache
+ */
+ pos = cache->evictionPosition;
+ x = CACHE_X(pos);
+ y = CACHE_Y(pos);
+ DBG_GLYPH_CACHE((" evicting glyph at %d\n", pos));
+ if (buffer->count) {
+ int i;
+
+ for (i = 0; i < buffer->count; i++) {
+ if (pSrc ?
+ (buffer->rects[i].xMask == x && buffer->rects[i].yMask == y) :
+ (buffer->rects[i].xSrc == x && buffer->rects[i].ySrc == y)) {
+ DBG_GLYPH_CACHE((" must flush buffer\n"));
+ return ExaGlyphNeedFlush;
+ }
+ }
+ }
+
+ /* OK, we're all set, swap in the new glyph */
+ exaGlyphCacheHashRemove(cache, pos);
+ exaGlyphCacheHashInsert(cache, pGlyph, pos);
+
+ /* And pick a new eviction position */
+ cache->evictionPosition = rand() % cache->size;
+ }
+
+ exaGlyphCacheUploadGlyph(pScreen, cache, x, y, pGlyph);
+ }
+
+ buffer->mask = cache->picture;
+
+ rect = &buffer->rects[buffer->count];
+
+ if (pSrc)
+ {
+ rect->xSrc = xSrc;
+ rect->ySrc = ySrc;
+ rect->xMask = x;
+ rect->yMask = y;
+ }
+ else
+ {
+ rect->xSrc = x;
+ rect->ySrc = y;
+ rect->xMask = 0;
+ rect->yMask = 0;
+ }
+
+ rect->pDst = pDst;
+ rect->xDst = xDst;
+ rect->yDst = yDst;
+ rect->width = pGlyph->info.width;
+ rect->height = pGlyph->info.height;
+
+ buffer->count++;
+
+ return ExaGlyphSuccess;
+}
+
+#undef CACHE_X
+#undef CACHE_Y
+
+static ExaGlyphCacheResult
+exaBufferGlyph(ScreenPtr pScreen,
+ ExaGlyphBufferPtr buffer,
+ GlyphPtr pGlyph,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ INT16 xSrc,
+ INT16 ySrc,
+ INT16 xMask,
+ INT16 yMask,
+ INT16 xDst,
+ INT16 yDst)
+{
+ ExaScreenPriv(pScreen);
+ unsigned int format = (GlyphPicture(pGlyph)[pScreen->myNum])->format;
+ int width = pGlyph->info.width;
+ int height = pGlyph->info.height;
+ ExaCompositeRectPtr rect;
+ PicturePtr mask;
+ int i;
+
+ if (buffer->count == GLYPH_BUFFER_SIZE)
+ return ExaGlyphNeedFlush;
+
+ if (PICT_FORMAT_BPP(format) == 1)
+ format = PICT_a8;
+
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+
+ if (format == cache->format &&
+ width <= cache->glyphWidth &&
+ height <= cache->glyphHeight) {
+ ExaGlyphCacheResult result = exaGlyphCacheBufferGlyph(pScreen,
+ &pExaScr->glyphCaches[i],
+ buffer,
+ pGlyph,
+ pSrc,
+ pDst,
+ xSrc, ySrc,
+ xMask, yMask,
+ xDst, yDst);
+ switch (result) {
+ case ExaGlyphFail:
+ break;
+ case ExaGlyphSuccess:
+ case ExaGlyphNeedFlush:
+ return result;
+ }
+ }
+ }
+
+ /* Couldn't find the glyph in the cache, use the glyph picture directly */
+
+ mask = GlyphPicture(pGlyph)[pScreen->myNum];
+ if (buffer->mask && buffer->mask != mask)
+ return ExaGlyphNeedFlush;
+
+ buffer->mask = mask;
+
+ rect = &buffer->rects[buffer->count];
+ rect->xSrc = xSrc;
+ rect->ySrc = ySrc;
+ rect->xMask = xMask;
+ rect->yMask = yMask;
+ rect->xDst = xDst;
+ rect->yDst = yDst;
+ rect->width = width;
+ rect->height = height;
+
+ buffer->count++;
+
+ return ExaGlyphSuccess;
+}
+
+static void
+exaGlyphsToMask(PicturePtr pMask,
+ ExaGlyphBufferPtr buffer)
+{
+ exaCompositeRects(PictOpAdd, buffer->mask, NULL, pMask,
+ buffer->count, buffer->rects);
+
+ buffer->count = 0;
+ buffer->mask = NULL;
+}
+
+static void
+exaGlyphsToDst(PicturePtr pSrc,
+ PicturePtr pDst,
+ ExaGlyphBufferPtr buffer)
+{
+ exaCompositeRects(PictOpOver, pSrc, buffer->mask, pDst, buffer->count,
+ buffer->rects);
+
+ buffer->count = 0;
+ buffer->mask = NULL;
+}
+
+/* Cut and paste from render/glyph.c - probably should export it instead */
+static void
+GlyphExtents (int nlist,
+ GlyphListPtr list,
+ GlyphPtr *glyphs,
+ BoxPtr extents)
+{
+ int x1, x2, y1, y2;
+ int n;
+ GlyphPtr glyph;
+ int x, y;
+
+ x = 0;
+ y = 0;
+ extents->x1 = MAXSHORT;
+ extents->x2 = MINSHORT;
+ extents->y1 = MAXSHORT;
+ extents->y2 = MINSHORT;
+ while (nlist--)
+ {
+ x += list->xOff;
+ y += list->yOff;
+ n = list->len;
+ list++;
+ while (n--)
+ {
+ glyph = *glyphs++;
+ x1 = x - glyph->info.x;
+ if (x1 < MINSHORT)
+ x1 = MINSHORT;
+ y1 = y - glyph->info.y;
+ if (y1 < MINSHORT)
+ y1 = MINSHORT;
+ x2 = x1 + glyph->info.width;
+ if (x2 > MAXSHORT)
+ x2 = MAXSHORT;
+ y2 = y1 + glyph->info.height;
+ if (y2 > MAXSHORT)
+ y2 = MAXSHORT;
+ if (x1 < extents->x1)
+ extents->x1 = x1;
+ if (x2 > extents->x2)
+ extents->x2 = x2;
+ if (y1 < extents->y1)
+ extents->y1 = y1;
+ if (y2 > extents->y2)
+ extents->y2 = y2;
+ x += glyph->info.xOff;
+ y += glyph->info.yOff;
+ }
+ }
+}
+
+void
+exaGlyphs (CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ PictFormatPtr maskFormat,
+ INT16 xSrc,
+ INT16 ySrc,
+ int nlist,
+ GlyphListPtr list,
+ GlyphPtr *glyphs)
+{
+ PixmapPtr pMaskPixmap = 0;
+ PicturePtr pMask = NULL;
+ ScreenPtr pScreen = pDst->pDrawable->pScreen;
+ int width = 0, height = 0;
+ int x, y;
+ int first_xOff = list->xOff, first_yOff = list->yOff;
+ int n;
+ GlyphPtr glyph;
+ int error;
+ BoxRec extents = {0, 0, 0, 0};
+ CARD32 component_alpha;
+ ExaGlyphBuffer buffer;
+
+ if (maskFormat)
+ {
+ ExaScreenPriv(pScreen);
+ GCPtr pGC;
+ xRectangle rect;
+
+ GlyphExtents (nlist, list, glyphs, &extents);
+
+ if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
+ return;
+ width = extents.x2 - extents.x1;
+ height = extents.y2 - extents.y1;
+
+ if (maskFormat->depth == 1) {
+ PictFormatPtr a8Format = PictureMatchFormat (pScreen, 8, PICT_a8);
+
+ if (a8Format)
+ maskFormat = a8Format;
+ }
+
+ pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
+ maskFormat->depth,
+ CREATE_PIXMAP_USAGE_SCRATCH);
+ if (!pMaskPixmap)
+ return;
+ component_alpha = NeedsComponent(maskFormat->format);
+ pMask = CreatePicture (0, &pMaskPixmap->drawable,
+ maskFormat, CPComponentAlpha, &component_alpha,
+ serverClient, &error);
+ if (!pMask ||
+ (!component_alpha && pExaScr->info->CheckComposite &&
+ !(*pExaScr->info->CheckComposite) (PictOpAdd, pSrc, NULL, pMask)))
+ {
+ PictFormatPtr argbFormat;
+
+ (*pScreen->DestroyPixmap) (pMaskPixmap);
+
+ if (!pMask)
+ return;
+
+ /* The driver can't seem to composite to a8, let's try argb (but
+ * without component-alpha) */
+ FreePicture ((pointer) pMask, (XID) 0);
+
+ argbFormat = PictureMatchFormat (pScreen, 32, PICT_a8r8g8b8);
+
+ if (argbFormat)
+ maskFormat = argbFormat;
+
+ pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
+ maskFormat->depth,
+ CREATE_PIXMAP_USAGE_SCRATCH);
+ if (!pMaskPixmap)
+ return;
+
+ pMask = CreatePicture (0, &pMaskPixmap->drawable, maskFormat, 0, 0,
+ serverClient, &error);
+ if (!pMask) {
+ (*pScreen->DestroyPixmap) (pMaskPixmap);
+ return;
+ }
+ }
+ pGC = GetScratchGC (pMaskPixmap->drawable.depth, pScreen);
+ ValidateGC (&pMaskPixmap->drawable, pGC);
+ rect.x = 0;
+ rect.y = 0;
+ rect.width = width;
+ rect.height = height;
+ (*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect);
+ FreeScratchGC (pGC);
+ x = -extents.x1;
+ y = -extents.y1;
+ }
+ else
+ {
+ x = 0;
+ y = 0;
+ }
+ buffer.count = 0;
+ buffer.mask = NULL;
+ while (nlist--)
+ {
+ x += list->xOff;
+ y += list->yOff;
+ n = list->len;
+ while (n--)
+ {
+ glyph = *glyphs++;
+
+ if (glyph->info.width > 0 && glyph->info.height > 0)
+ {
+ /* pGlyph->info.{x,y} compensate for empty space in the glyph. */
+ if (maskFormat)
+ {
+ if (exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask,
+ 0, 0, 0, 0, x - glyph->info.x, y - glyph->info.y) == ExaGlyphNeedFlush)
+ {
+ exaGlyphsToMask(pMask, &buffer);
+ exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask,
+ 0, 0, 0, 0, x - glyph->info.x, y - glyph->info.y);
+ }
+ }
+ else
+ {
+ if (exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst,
+ xSrc + (x - glyph->info.x) - first_xOff, ySrc + (y - glyph->info.y) - first_yOff,
+ 0, 0, x - glyph->info.x, y - glyph->info.y)
+ == ExaGlyphNeedFlush)
+ {
+ exaGlyphsToDst(pSrc, pDst, &buffer);
+ exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst,
+ xSrc + (x - glyph->info.x) - first_xOff, ySrc + (y - glyph->info.y) - first_yOff,
+ 0, 0, x - glyph->info.x, y - glyph->info.y);
+ }
+ }
+ }
+
+ x += glyph->info.xOff;
+ y += glyph->info.yOff;
+ }
+ list++;
+ }
+
+ if (buffer.count) {
+ if (maskFormat)
+ exaGlyphsToMask(pMask, &buffer);
+ else
+ exaGlyphsToDst(pSrc, pDst, &buffer);
+ }
+
+ if (maskFormat)
+ {
+ x = extents.x1;
+ y = extents.y1;
+ CompositePicture (op,
+ pSrc,
+ pMask,
+ pDst,
+ xSrc + x - first_xOff,
+ ySrc + y - first_yOff,
+ 0, 0,
+ x, y,
+ width, height);
+ FreePicture ((pointer) pMask, (XID) 0);
+ (*pScreen->DestroyPixmap) (pMaskPixmap);
+ }
+}
diff --git a/xorg-server/exa/exa_offscreen.c b/xorg-server/exa/exa_offscreen.c
index e3a9ab2f6..506da616d 100644
--- a/xorg-server/exa/exa_offscreen.c
+++ b/xorg-server/exa/exa_offscreen.c
@@ -1,696 +1,696 @@
-/*
- * Copyright © 2003 Anders Carlsson
- *
- * 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, and that the name of Anders Carlsson not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Anders Carlsson makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * ANDERS CARLSSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL ANDERS CARLSSON BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-/** @file
- * This allocator allocates blocks of memory by maintaining a list of areas.
- * When allocating, the contiguous block of areas with the minimum eviction
- * cost is found and evicted in order to make room for the new allocation.
- */
-
-#include "exa_priv.h"
-
-#include <limits.h>
-#include <assert.h>
-#include <stdlib.h>
-
-#if DEBUG_OFFSCREEN
-#define DBG_OFFSCREEN(a) ErrorF a
-#else
-#define DBG_OFFSCREEN(a)
-#endif
-
-#if DEBUG_OFFSCREEN
-static void
-ExaOffscreenValidate (ScreenPtr pScreen)
-{
- ExaScreenPriv (pScreen);
- ExaOffscreenArea *prev = 0, *area;
-
- assert (pExaScr->info->offScreenAreas->base_offset ==
- pExaScr->info->offScreenBase);
- for (area = pExaScr->info->offScreenAreas; area; area = area->next)
- {
- assert (area->offset >= area->base_offset &&
- area->offset < (area->base_offset + area->size));
- if (prev)
- assert (prev->base_offset + prev->size == area->base_offset);
- prev = area;
- }
- assert (prev->base_offset + prev->size == pExaScr->info->memorySize);
-}
-#else
-#define ExaOffscreenValidate(s)
-#endif
-
-static ExaOffscreenArea *
-ExaOffscreenKickOut (ScreenPtr pScreen, ExaOffscreenArea *area)
-{
- if (area->save)
- (*area->save) (pScreen, area);
- return exaOffscreenFree (pScreen, area);
-}
-
-static void
-exaUpdateEvictionCost(ExaOffscreenArea *area, unsigned offScreenCounter)
-{
- unsigned age;
-
- if (area->state == ExaOffscreenAvail)
- return;
-
- age = offScreenCounter - area->last_use;
-
- /* This is unlikely to happen, but could result in a division by zero... */
- if (age > (UINT_MAX / 2)) {
- age = UINT_MAX / 2;
- area->last_use = offScreenCounter - age;
- }
-
- area->eviction_cost = area->size / age;
-}
-
-static ExaOffscreenArea *
-exaFindAreaToEvict(ExaScreenPrivPtr pExaScr, int size, int align)
-{
- ExaOffscreenArea *begin, *end, *best;
- unsigned cost, best_cost;
- int avail, real_size;
-
- best_cost = UINT_MAX;
- begin = end = pExaScr->info->offScreenAreas;
- avail = 0;
- cost = 0;
- best = 0;
-
- while (end != NULL)
- {
- restart:
- while (begin != NULL && begin->state == ExaOffscreenLocked)
- begin = end = begin->next;
-
- if (begin == NULL)
- break;
-
- /* adjust size needed to account for alignment loss for this area */
- real_size = size + (begin->base_offset + begin->size - size) % align;
-
- while (avail < real_size && end != NULL)
- {
- if (end->state == ExaOffscreenLocked) {
- /* Can't more room here, restart after this locked area */
- avail = 0;
- cost = 0;
- begin = end;
- goto restart;
- }
- avail += end->size;
- exaUpdateEvictionCost(end, pExaScr->offScreenCounter);
- cost += end->eviction_cost;
- end = end->next;
- }
-
- /* Check the cost, update best */
- if (avail >= real_size && cost < best_cost) {
- best = begin;
- best_cost = cost;
- }
-
- avail -= begin->size;
- cost -= begin->eviction_cost;
- begin = begin->next;
- }
-
- return best;
-}
-
-/**
- * exaOffscreenAlloc allocates offscreen memory
- *
- * @param pScreen current screen
- * @param size size in bytes of the allocation
- * @param align byte alignment requirement for the offset of the allocated area
- * @param locked whether the allocated area is locked and can't be kicked out
- * @param save callback for when the area is evicted from memory
- * @param privdata private data for the save callback.
- *
- * Allocates offscreen memory from the device associated with pScreen. size
- * and align deteremine where and how large the allocated area is, and locked
- * will mark whether it should be held in card memory. privdata may be any
- * pointer for the save callback when the area is removed.
- *
- * Note that locked areas do get evicted on VT switch unless the driver
- * requested version 2.1 or newer behavior. In that case, the save callback is
- * still called.
- */
-ExaOffscreenArea *
-exaOffscreenAlloc (ScreenPtr pScreen, int size, int align,
- Bool locked,
- ExaOffscreenSaveProc save,
- pointer privData)
-{
- ExaOffscreenArea *area;
- ExaScreenPriv (pScreen);
- int real_size = 0, largest_avail = 0;
-#if DEBUG_OFFSCREEN
- static int number = 0;
- ErrorF("================= ============ allocating a new pixmap %d\n", ++number);
-#endif
-
- ExaOffscreenValidate (pScreen);
- if (!align)
- align = 1;
-
- if (!size)
- {
- DBG_OFFSCREEN (("Alloc 0x%x -> EMPTY\n", size));
- return NULL;
- }
-
- /* throw out requests that cannot fit */
- if (size > (pExaScr->info->memorySize - pExaScr->info->offScreenBase))
- {
- DBG_OFFSCREEN (("Alloc 0x%x vs (0x%lx) -> TOBIG\n", size,
- pExaScr->info->memorySize -
- pExaScr->info->offScreenBase));
- return NULL;
- }
-
- /* Try to find a free space that'll fit. */
- for (area = pExaScr->info->offScreenAreas; area; area = area->next)
- {
- /* skip allocated areas */
- if (area->state != ExaOffscreenAvail)
- continue;
-
- /* adjust size to match alignment requirement */
- real_size = size + (area->base_offset + area->size - size) % align;
-
- /* does it fit? */
- if (real_size <= area->size)
- break;
-
- if (area->size > largest_avail)
- largest_avail = area->size;
- }
-
- if (!area)
- {
- area = exaFindAreaToEvict(pExaScr, size, align);
-
- if (!area)
- {
- DBG_OFFSCREEN (("Alloc 0x%x -> NOSPACE\n", size));
- /* Could not allocate memory */
- ExaOffscreenValidate (pScreen);
- return NULL;
- }
-
- /* adjust size needed to account for alignment loss for this area */
- real_size = size + (area->base_offset + area->size - size) % align;
-
- /*
- * Kick out first area if in use
- */
- if (area->state != ExaOffscreenAvail)
- area = ExaOffscreenKickOut (pScreen, area);
- /*
- * Now get the system to merge the other needed areas together
- */
- while (area->size < real_size)
- {
- assert (area->next && area->next->state == ExaOffscreenRemovable);
- (void) ExaOffscreenKickOut (pScreen, area->next);
- }
- }
-
- /* save extra space in new area */
- if (real_size < area->size)
- {
- ExaOffscreenArea *new_area = xalloc (sizeof (ExaOffscreenArea));
- if (!new_area)
- return NULL;
- new_area->base_offset = area->base_offset;
-
- new_area->offset = new_area->base_offset;
- new_area->align = 0;
- new_area->size = area->size - real_size;
- new_area->state = ExaOffscreenAvail;
- new_area->save = NULL;
- new_area->last_use = 0;
- new_area->eviction_cost = 0;
- new_area->next = area;
- new_area->prev = area->prev;
- if (area->prev->next)
- area->prev->next = new_area;
- else
- pExaScr->info->offScreenAreas = new_area;
- area->prev = new_area;
- area->base_offset = new_area->base_offset + new_area->size;
- area->size = real_size;
- } else
- pExaScr->numOffscreenAvailable--;
-
- /*
- * Mark this area as in use
- */
- if (locked)
- area->state = ExaOffscreenLocked;
- else
- area->state = ExaOffscreenRemovable;
- area->privData = privData;
- area->save = save;
- area->last_use = pExaScr->offScreenCounter++;
- area->offset = (area->base_offset + align - 1);
- area->offset -= area->offset % align;
- area->align = align;
-
- ExaOffscreenValidate (pScreen);
-
- DBG_OFFSCREEN (("Alloc 0x%x -> 0x%x (0x%x)\n", size,
- area->base_offset, area->offset));
- return area;
-}
-
-/**
- * Ejects all offscreen areas, and uninitializes the offscreen memory manager.
- */
-void
-ExaOffscreenSwapOut (ScreenPtr pScreen)
-{
- ExaScreenPriv (pScreen);
-
- ExaOffscreenValidate (pScreen);
- /* loop until a single free area spans the space */
- for (;;)
- {
- ExaOffscreenArea *area = pExaScr->info->offScreenAreas;
-
- if (!area)
- break;
- if (area->state == ExaOffscreenAvail)
- {
- area = area->next;
- if (!area)
- break;
- }
- assert (area->state != ExaOffscreenAvail);
- (void) ExaOffscreenKickOut (pScreen, area);
- ExaOffscreenValidate (pScreen);
- }
- ExaOffscreenValidate (pScreen);
- ExaOffscreenFini (pScreen);
-}
-
-/** Ejects all pixmaps managed by EXA. */
-static void
-ExaOffscreenEjectPixmaps (ScreenPtr pScreen)
-{
- ExaScreenPriv (pScreen);
-
- ExaOffscreenValidate (pScreen);
- /* loop until a single free area spans the space */
- for (;;)
- {
- ExaOffscreenArea *area;
-
- for (area = pExaScr->info->offScreenAreas; area != NULL;
- area = area->next)
- {
- if (area->state == ExaOffscreenRemovable &&
- area->save == exaPixmapSave)
- {
- (void) ExaOffscreenKickOut (pScreen, area);
- ExaOffscreenValidate (pScreen);
- break;
- }
- }
- if (area == NULL)
- break;
- }
- ExaOffscreenValidate (pScreen);
-}
-
-void
-ExaOffscreenSwapIn (ScreenPtr pScreen)
-{
- exaOffscreenInit (pScreen);
-}
-
-/**
- * Prepares EXA for disabling of FB access, or restoring it.
- *
- * In version 2.1, the disabling results in pixmaps being ejected, while other
- * allocations remain. With this plus the prevention of migration while
- * swappedOut is set, EXA by itself should not cause any access of the
- * framebuffer to occur while swapped out. Any remaining issues are the
- * responsibility of the driver.
- *
- * Prior to version 2.1, all allocations, including locked ones, are ejected
- * when access is disabled, and the allocator is torn down while swappedOut
- * is set. This is more drastic, and caused implementation difficulties for
- * many drivers that could otherwise handle the lack of FB access while
- * swapped out.
- */
-void
-exaEnableDisableFBAccess (int index, Bool enable)
-{
- ScreenPtr pScreen = screenInfo.screens[index];
- ExaScreenPriv (pScreen);
-
- if (pExaScr->info->flags & EXA_HANDLES_PIXMAPS)
- return;
-
- if (!enable && pExaScr->disableFbCount++ == 0) {
- if (pExaScr->info->exa_minor < 1)
- ExaOffscreenSwapOut (pScreen);
- else
- ExaOffscreenEjectPixmaps (pScreen);
- pExaScr->swappedOut = TRUE;
- }
-
- if (enable && --pExaScr->disableFbCount == 0) {
- if (pExaScr->info->exa_minor < 1)
- ExaOffscreenSwapIn (pScreen);
- pExaScr->swappedOut = FALSE;
- }
-}
-
-/* merge the next free area into this one */
-static void
-ExaOffscreenMerge (ExaScreenPrivPtr pExaScr, ExaOffscreenArea *area)
-{
- ExaOffscreenArea *next = area->next;
-
- /* account for space */
- area->size += next->size;
- /* frob pointer */
- area->next = next->next;
- if (area->next)
- area->next->prev = area;
- else
- pExaScr->info->offScreenAreas->prev = area;
- xfree (next);
-
- pExaScr->numOffscreenAvailable--;
-}
-
-/**
- * exaOffscreenFree frees an allocation.
- *
- * @param pScreen current screen
- * @param area offscreen area to free
- *
- * exaOffscreenFree frees an allocation created by exaOffscreenAlloc. Note that
- * the save callback of the area is not called, and it is up to the driver to
- * do any cleanup necessary as a result.
- *
- * @return pointer to the newly freed area. This behavior should not be relied
- * on.
- */
-ExaOffscreenArea *
-exaOffscreenFree (ScreenPtr pScreen, ExaOffscreenArea *area)
-{
- ExaScreenPriv(pScreen);
- ExaOffscreenArea *next = area->next;
- ExaOffscreenArea *prev;
-
- DBG_OFFSCREEN (("Free 0x%x -> 0x%x (0x%x)\n", area->size,
- area->base_offset, area->offset));
- ExaOffscreenValidate (pScreen);
-
- area->state = ExaOffscreenAvail;
- area->save = NULL;
- area->last_use = 0;
- area->eviction_cost = 0;
- /*
- * Find previous area
- */
- if (area == pExaScr->info->offScreenAreas)
- prev = NULL;
- else
- prev = area->prev;
-
- pExaScr->numOffscreenAvailable++;
-
- /* link with next area if free */
- if (next && next->state == ExaOffscreenAvail)
- ExaOffscreenMerge (pExaScr, area);
-
- /* link with prev area if free */
- if (prev && prev->state == ExaOffscreenAvail)
- {
- area = prev;
- ExaOffscreenMerge (pExaScr, area);
- }
-
- ExaOffscreenValidate (pScreen);
- DBG_OFFSCREEN(("\tdone freeing\n"));
- return area;
-}
-
-void
-ExaOffscreenMarkUsed (PixmapPtr pPixmap)
-{
- ExaPixmapPriv (pPixmap);
- ExaScreenPriv (pPixmap->drawable.pScreen);
-
- if (!pExaPixmap || !pExaPixmap->area)
- return;
-
- pExaPixmap->area->last_use = pExaScr->offScreenCounter++;
-}
-
-/**
- * Defragment offscreen memory by compacting allocated areas at the end of it,
- * leaving the total amount of memory available as a single area at the
- * beginning (when there are no pinned allocations).
- */
-_X_HIDDEN ExaOffscreenArea*
-ExaOffscreenDefragment (ScreenPtr pScreen)
-{
- ExaScreenPriv (pScreen);
- ExaOffscreenArea *area, *largest_available = NULL;
- int largest_size = 0;
- PixmapPtr pDstPix;
- ExaPixmapPrivPtr pExaDstPix;
-
- pDstPix = (*pScreen->CreatePixmap) (pScreen, 0, 0, 0, 0);
-
- if (!pDstPix)
- return NULL;
-
- pExaDstPix = ExaGetPixmapPriv (pDstPix);
- pExaDstPix->use_gpu_copy = TRUE;
-
- for (area = pExaScr->info->offScreenAreas->prev;
- area != pExaScr->info->offScreenAreas;
- )
- {
- ExaOffscreenArea *prev = area->prev;
- PixmapPtr pSrcPix;
- ExaPixmapPrivPtr pExaSrcPix;
- Bool save_use_gpu_copy;
- int save_pitch;
-
- if (area->state != ExaOffscreenAvail ||
- prev->state == ExaOffscreenLocked ||
- (prev->state == ExaOffscreenRemovable &&
- prev->save != exaPixmapSave)) {
- area = prev;
- continue;
- }
-
- if (prev->state == ExaOffscreenAvail) {
- if (area == largest_available) {
- largest_available = prev;
- largest_size += prev->size;
- }
- area = prev;
- ExaOffscreenMerge (pExaScr, area);
- continue;
- }
-
- if (area->size > largest_size) {
- largest_available = area;
- largest_size = area->size;
- }
-
- pSrcPix = prev->privData;
- pExaSrcPix = ExaGetPixmapPriv (pSrcPix);
-
- pExaDstPix->fb_ptr = pExaScr->info->memoryBase +
- area->base_offset + area->size - prev->size + prev->base_offset -
- prev->offset;
- pExaDstPix->fb_ptr -= (unsigned long)pExaDstPix->fb_ptr % prev->align;
-
- if (pExaDstPix->fb_ptr <= pExaSrcPix->fb_ptr) {
- area = prev;
- continue;
- }
-
- if (!(pExaScr->info->flags & EXA_SUPPORTS_OFFSCREEN_OVERLAPS) &&
- (pExaSrcPix->fb_ptr + prev->size) > pExaDstPix->fb_ptr) {
- area = prev;
- continue;
- }
-
- save_use_gpu_copy = pExaSrcPix->use_gpu_copy;
- save_pitch = pSrcPix->devKind;
-
- pExaSrcPix->use_gpu_copy = TRUE;
- pSrcPix->devKind = pExaSrcPix->fb_pitch;
-
- pDstPix->drawable.width = pSrcPix->drawable.width;
- pDstPix->devKind = pSrcPix->devKind;
- pDstPix->drawable.height = pSrcPix->drawable.height;
- pDstPix->drawable.depth = pSrcPix->drawable.depth;
- pDstPix->drawable.bitsPerPixel = pSrcPix->drawable.bitsPerPixel;
-
- if (!pExaScr->info->PrepareCopy (pSrcPix, pDstPix, -1, -1, GXcopy, ~0)) {
- pExaSrcPix->use_gpu_copy = save_use_gpu_copy;
- pSrcPix->devKind = save_pitch;
- area = prev;
- continue;
- }
-
- pExaScr->info->Copy (pDstPix, 0, 0, 0, 0, pDstPix->drawable.width,
- pDstPix->drawable.height);
- pExaScr->info->DoneCopy (pDstPix);
- exaMarkSync (pScreen);
-
- DBG_OFFSCREEN(("Before swap: prev=0x%08x-0x%08x-0x%08x area=0x%08x-0x%08x-0x%08x\n",
- prev->base_offset, prev->offset, prev->base_offset + prev->size,
- area->base_offset, area->offset, area->base_offset + area->size));
-
- /* Calculate swapped area offsets and sizes */
- area->base_offset = prev->base_offset;
- area->offset = area->base_offset;
- prev->offset += pExaDstPix->fb_ptr - pExaSrcPix->fb_ptr;
- assert(prev->offset >= pExaScr->info->offScreenBase &&
- prev->offset < pExaScr->info->memorySize);
- prev->base_offset = prev->offset;
- if (area->next)
- prev->size = area->next->base_offset - prev->base_offset;
- else
- prev->size = pExaScr->info->memorySize - prev->base_offset;
- area->size = prev->base_offset - area->base_offset;
-
- DBG_OFFSCREEN(("After swap: area=0x%08x-0x%08x-0x%08x prev=0x%08x-0x%08x-0x%08x\n",
- area->base_offset, area->offset, area->base_offset + area->size,
- prev->base_offset, prev->offset, prev->base_offset + prev->size));
-
- /* Swap areas in list */
- if (area->next)
- area->next->prev = prev;
- else
- pExaScr->info->offScreenAreas->prev = prev;
- if (prev->prev->next)
- prev->prev->next = area;
- else
- pExaScr->info->offScreenAreas = area;
- prev->next = area->next;
- area->next = prev;
- area->prev = prev->prev;
- prev->prev = area;
- if (!area->prev->next)
- pExaScr->info->offScreenAreas = area;
-
-#if DEBUG_OFFSCREEN
- if (prev->prev == prev || prev->next == prev)
- ErrorF("Whoops, prev points to itself!\n");
-
- if (area->prev == area || area->next == area)
- ErrorF("Whoops, area points to itself!\n");
-#endif
-
- pExaSrcPix->fb_ptr = pExaDstPix->fb_ptr;
- pExaSrcPix->use_gpu_copy = save_use_gpu_copy;
- pSrcPix->devKind = save_pitch;
- }
-
- pDstPix->drawable.width = 0;
- pDstPix->drawable.height = 0;
- pDstPix->drawable.depth = 0;
- pDstPix->drawable.bitsPerPixel = 0;
-
- (*pScreen->DestroyPixmap) (pDstPix);
-
- if (area->state == ExaOffscreenAvail && area->size > largest_size)
- return area;
-
- return largest_available;
-}
-
-/**
- * exaOffscreenInit initializes the offscreen memory manager.
- *
- * @param pScreen current screen
- *
- * exaOffscreenInit is called by exaDriverInit to set up the memory manager for
- * the screen, if any offscreen memory is available.
- */
-Bool
-exaOffscreenInit (ScreenPtr pScreen)
-{
- ExaScreenPriv (pScreen);
- ExaOffscreenArea *area;
-
- /* Allocate a big free area */
- area = xalloc (sizeof (ExaOffscreenArea));
-
- if (!area)
- return FALSE;
-
- area->state = ExaOffscreenAvail;
- area->base_offset = pExaScr->info->offScreenBase;
- area->offset = area->base_offset;
- area->align = 0;
- area->size = pExaScr->info->memorySize - area->base_offset;
- area->save = NULL;
- area->next = NULL;
- area->prev = area;
- area->last_use = 0;
- area->eviction_cost = 0;
-
- /* Add it to the free areas */
- pExaScr->info->offScreenAreas = area;
- pExaScr->offScreenCounter = 1;
- pExaScr->numOffscreenAvailable = 1;
-
- ExaOffscreenValidate (pScreen);
-
- return TRUE;
-}
-
-void
-ExaOffscreenFini (ScreenPtr pScreen)
-{
- ExaScreenPriv (pScreen);
- ExaOffscreenArea *area;
-
- /* just free all of the area records */
- while ((area = pExaScr->info->offScreenAreas))
- {
- pExaScr->info->offScreenAreas = area->next;
- xfree (area);
- }
-}
+/*
+ * Copyright © 2003 Anders Carlsson
+ *
+ * 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, and that the name of Anders Carlsson not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Anders Carlsson makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * ANDERS CARLSSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL ANDERS CARLSSON BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/** @file
+ * This allocator allocates blocks of memory by maintaining a list of areas.
+ * When allocating, the contiguous block of areas with the minimum eviction
+ * cost is found and evicted in order to make room for the new allocation.
+ */
+
+#include "exa_priv.h"
+
+#include <limits.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#if DEBUG_OFFSCREEN
+#define DBG_OFFSCREEN(a) ErrorF a
+#else
+#define DBG_OFFSCREEN(a)
+#endif
+
+#if DEBUG_OFFSCREEN
+static void
+ExaOffscreenValidate (ScreenPtr pScreen)
+{
+ ExaScreenPriv (pScreen);
+ ExaOffscreenArea *prev = 0, *area;
+
+ assert (pExaScr->info->offScreenAreas->base_offset ==
+ pExaScr->info->offScreenBase);
+ for (area = pExaScr->info->offScreenAreas; area; area = area->next)
+ {
+ assert (area->offset >= area->base_offset &&
+ area->offset < (area->base_offset + area->size));
+ if (prev)
+ assert (prev->base_offset + prev->size == area->base_offset);
+ prev = area;
+ }
+ assert (prev->base_offset + prev->size == pExaScr->info->memorySize);
+}
+#else
+#define ExaOffscreenValidate(s)
+#endif
+
+static ExaOffscreenArea *
+ExaOffscreenKickOut (ScreenPtr pScreen, ExaOffscreenArea *area)
+{
+ if (area->save)
+ (*area->save) (pScreen, area);
+ return exaOffscreenFree (pScreen, area);
+}
+
+static void
+exaUpdateEvictionCost(ExaOffscreenArea *area, unsigned offScreenCounter)
+{
+ unsigned age;
+
+ if (area->state == ExaOffscreenAvail)
+ return;
+
+ age = offScreenCounter - area->last_use;
+
+ /* This is unlikely to happen, but could result in a division by zero... */
+ if (age > (UINT_MAX / 2)) {
+ age = UINT_MAX / 2;
+ area->last_use = offScreenCounter - age;
+ }
+
+ area->eviction_cost = area->size / age;
+}
+
+static ExaOffscreenArea *
+exaFindAreaToEvict(ExaScreenPrivPtr pExaScr, int size, int align)
+{
+ ExaOffscreenArea *begin, *end, *best;
+ unsigned cost, best_cost;
+ int avail, real_size;
+
+ best_cost = UINT_MAX;
+ begin = end = pExaScr->info->offScreenAreas;
+ avail = 0;
+ cost = 0;
+ best = 0;
+
+ while (end != NULL)
+ {
+ restart:
+ while (begin != NULL && begin->state == ExaOffscreenLocked)
+ begin = end = begin->next;
+
+ if (begin == NULL)
+ break;
+
+ /* adjust size needed to account for alignment loss for this area */
+ real_size = size + (begin->base_offset + begin->size - size) % align;
+
+ while (avail < real_size && end != NULL)
+ {
+ if (end->state == ExaOffscreenLocked) {
+ /* Can't more room here, restart after this locked area */
+ avail = 0;
+ cost = 0;
+ begin = end;
+ goto restart;
+ }
+ avail += end->size;
+ exaUpdateEvictionCost(end, pExaScr->offScreenCounter);
+ cost += end->eviction_cost;
+ end = end->next;
+ }
+
+ /* Check the cost, update best */
+ if (avail >= real_size && cost < best_cost) {
+ best = begin;
+ best_cost = cost;
+ }
+
+ avail -= begin->size;
+ cost -= begin->eviction_cost;
+ begin = begin->next;
+ }
+
+ return best;
+}
+
+/**
+ * exaOffscreenAlloc allocates offscreen memory
+ *
+ * @param pScreen current screen
+ * @param size size in bytes of the allocation
+ * @param align byte alignment requirement for the offset of the allocated area
+ * @param locked whether the allocated area is locked and can't be kicked out
+ * @param save callback for when the area is evicted from memory
+ * @param privdata private data for the save callback.
+ *
+ * Allocates offscreen memory from the device associated with pScreen. size
+ * and align deteremine where and how large the allocated area is, and locked
+ * will mark whether it should be held in card memory. privdata may be any
+ * pointer for the save callback when the area is removed.
+ *
+ * Note that locked areas do get evicted on VT switch unless the driver
+ * requested version 2.1 or newer behavior. In that case, the save callback is
+ * still called.
+ */
+ExaOffscreenArea *
+exaOffscreenAlloc (ScreenPtr pScreen, int size, int align,
+ Bool locked,
+ ExaOffscreenSaveProc save,
+ pointer privData)
+{
+ ExaOffscreenArea *area;
+ ExaScreenPriv (pScreen);
+ int real_size = 0, largest_avail = 0;
+#if DEBUG_OFFSCREEN
+ static int number = 0;
+ ErrorF("================= ============ allocating a new pixmap %d\n", ++number);
+#endif
+
+ ExaOffscreenValidate (pScreen);
+ if (!align)
+ align = 1;
+
+ if (!size)
+ {
+ DBG_OFFSCREEN (("Alloc 0x%x -> EMPTY\n", size));
+ return NULL;
+ }
+
+ /* throw out requests that cannot fit */
+ if (size > (pExaScr->info->memorySize - pExaScr->info->offScreenBase))
+ {
+ DBG_OFFSCREEN (("Alloc 0x%x vs (0x%lx) -> TOBIG\n", size,
+ pExaScr->info->memorySize -
+ pExaScr->info->offScreenBase));
+ return NULL;
+ }
+
+ /* Try to find a free space that'll fit. */
+ for (area = pExaScr->info->offScreenAreas; area; area = area->next)
+ {
+ /* skip allocated areas */
+ if (area->state != ExaOffscreenAvail)
+ continue;
+
+ /* adjust size to match alignment requirement */
+ real_size = size + (area->base_offset + area->size - size) % align;
+
+ /* does it fit? */
+ if (real_size <= area->size)
+ break;
+
+ if (area->size > largest_avail)
+ largest_avail = area->size;
+ }
+
+ if (!area)
+ {
+ area = exaFindAreaToEvict(pExaScr, size, align);
+
+ if (!area)
+ {
+ DBG_OFFSCREEN (("Alloc 0x%x -> NOSPACE\n", size));
+ /* Could not allocate memory */
+ ExaOffscreenValidate (pScreen);
+ return NULL;
+ }
+
+ /* adjust size needed to account for alignment loss for this area */
+ real_size = size + (area->base_offset + area->size - size) % align;
+
+ /*
+ * Kick out first area if in use
+ */
+ if (area->state != ExaOffscreenAvail)
+ area = ExaOffscreenKickOut (pScreen, area);
+ /*
+ * Now get the system to merge the other needed areas together
+ */
+ while (area->size < real_size)
+ {
+ assert (area->next && area->next->state == ExaOffscreenRemovable);
+ (void) ExaOffscreenKickOut (pScreen, area->next);
+ }
+ }
+
+ /* save extra space in new area */
+ if (real_size < area->size)
+ {
+ ExaOffscreenArea *new_area = malloc(sizeof (ExaOffscreenArea));
+ if (!new_area)
+ return NULL;
+ new_area->base_offset = area->base_offset;
+
+ new_area->offset = new_area->base_offset;
+ new_area->align = 0;
+ new_area->size = area->size - real_size;
+ new_area->state = ExaOffscreenAvail;
+ new_area->save = NULL;
+ new_area->last_use = 0;
+ new_area->eviction_cost = 0;
+ new_area->next = area;
+ new_area->prev = area->prev;
+ if (area->prev->next)
+ area->prev->next = new_area;
+ else
+ pExaScr->info->offScreenAreas = new_area;
+ area->prev = new_area;
+ area->base_offset = new_area->base_offset + new_area->size;
+ area->size = real_size;
+ } else
+ pExaScr->numOffscreenAvailable--;
+
+ /*
+ * Mark this area as in use
+ */
+ if (locked)
+ area->state = ExaOffscreenLocked;
+ else
+ area->state = ExaOffscreenRemovable;
+ area->privData = privData;
+ area->save = save;
+ area->last_use = pExaScr->offScreenCounter++;
+ area->offset = (area->base_offset + align - 1);
+ area->offset -= area->offset % align;
+ area->align = align;
+
+ ExaOffscreenValidate (pScreen);
+
+ DBG_OFFSCREEN (("Alloc 0x%x -> 0x%x (0x%x)\n", size,
+ area->base_offset, area->offset));
+ return area;
+}
+
+/**
+ * Ejects all offscreen areas, and uninitializes the offscreen memory manager.
+ */
+void
+ExaOffscreenSwapOut (ScreenPtr pScreen)
+{
+ ExaScreenPriv (pScreen);
+
+ ExaOffscreenValidate (pScreen);
+ /* loop until a single free area spans the space */
+ for (;;)
+ {
+ ExaOffscreenArea *area = pExaScr->info->offScreenAreas;
+
+ if (!area)
+ break;
+ if (area->state == ExaOffscreenAvail)
+ {
+ area = area->next;
+ if (!area)
+ break;
+ }
+ assert (area->state != ExaOffscreenAvail);
+ (void) ExaOffscreenKickOut (pScreen, area);
+ ExaOffscreenValidate (pScreen);
+ }
+ ExaOffscreenValidate (pScreen);
+ ExaOffscreenFini (pScreen);
+}
+
+/** Ejects all pixmaps managed by EXA. */
+static void
+ExaOffscreenEjectPixmaps (ScreenPtr pScreen)
+{
+ ExaScreenPriv (pScreen);
+
+ ExaOffscreenValidate (pScreen);
+ /* loop until a single free area spans the space */
+ for (;;)
+ {
+ ExaOffscreenArea *area;
+
+ for (area = pExaScr->info->offScreenAreas; area != NULL;
+ area = area->next)
+ {
+ if (area->state == ExaOffscreenRemovable &&
+ area->save == exaPixmapSave)
+ {
+ (void) ExaOffscreenKickOut (pScreen, area);
+ ExaOffscreenValidate (pScreen);
+ break;
+ }
+ }
+ if (area == NULL)
+ break;
+ }
+ ExaOffscreenValidate (pScreen);
+}
+
+void
+ExaOffscreenSwapIn (ScreenPtr pScreen)
+{
+ exaOffscreenInit (pScreen);
+}
+
+/**
+ * Prepares EXA for disabling of FB access, or restoring it.
+ *
+ * In version 2.1, the disabling results in pixmaps being ejected, while other
+ * allocations remain. With this plus the prevention of migration while
+ * swappedOut is set, EXA by itself should not cause any access of the
+ * framebuffer to occur while swapped out. Any remaining issues are the
+ * responsibility of the driver.
+ *
+ * Prior to version 2.1, all allocations, including locked ones, are ejected
+ * when access is disabled, and the allocator is torn down while swappedOut
+ * is set. This is more drastic, and caused implementation difficulties for
+ * many drivers that could otherwise handle the lack of FB access while
+ * swapped out.
+ */
+void
+exaEnableDisableFBAccess (int index, Bool enable)
+{
+ ScreenPtr pScreen = screenInfo.screens[index];
+ ExaScreenPriv (pScreen);
+
+ if (pExaScr->info->flags & EXA_HANDLES_PIXMAPS)
+ return;
+
+ if (!enable && pExaScr->disableFbCount++ == 0) {
+ if (pExaScr->info->exa_minor < 1)
+ ExaOffscreenSwapOut (pScreen);
+ else
+ ExaOffscreenEjectPixmaps (pScreen);
+ pExaScr->swappedOut = TRUE;
+ }
+
+ if (enable && --pExaScr->disableFbCount == 0) {
+ if (pExaScr->info->exa_minor < 1)
+ ExaOffscreenSwapIn (pScreen);
+ pExaScr->swappedOut = FALSE;
+ }
+}
+
+/* merge the next free area into this one */
+static void
+ExaOffscreenMerge (ExaScreenPrivPtr pExaScr, ExaOffscreenArea *area)
+{
+ ExaOffscreenArea *next = area->next;
+
+ /* account for space */
+ area->size += next->size;
+ /* frob pointer */
+ area->next = next->next;
+ if (area->next)
+ area->next->prev = area;
+ else
+ pExaScr->info->offScreenAreas->prev = area;
+ free(next);
+
+ pExaScr->numOffscreenAvailable--;
+}
+
+/**
+ * exaOffscreenFree frees an allocation.
+ *
+ * @param pScreen current screen
+ * @param area offscreen area to free
+ *
+ * exaOffscreenFree frees an allocation created by exaOffscreenAlloc. Note that
+ * the save callback of the area is not called, and it is up to the driver to
+ * do any cleanup necessary as a result.
+ *
+ * @return pointer to the newly freed area. This behavior should not be relied
+ * on.
+ */
+ExaOffscreenArea *
+exaOffscreenFree (ScreenPtr pScreen, ExaOffscreenArea *area)
+{
+ ExaScreenPriv(pScreen);
+ ExaOffscreenArea *next = area->next;
+ ExaOffscreenArea *prev;
+
+ DBG_OFFSCREEN (("Free 0x%x -> 0x%x (0x%x)\n", area->size,
+ area->base_offset, area->offset));
+ ExaOffscreenValidate (pScreen);
+
+ area->state = ExaOffscreenAvail;
+ area->save = NULL;
+ area->last_use = 0;
+ area->eviction_cost = 0;
+ /*
+ * Find previous area
+ */
+ if (area == pExaScr->info->offScreenAreas)
+ prev = NULL;
+ else
+ prev = area->prev;
+
+ pExaScr->numOffscreenAvailable++;
+
+ /* link with next area if free */
+ if (next && next->state == ExaOffscreenAvail)
+ ExaOffscreenMerge (pExaScr, area);
+
+ /* link with prev area if free */
+ if (prev && prev->state == ExaOffscreenAvail)
+ {
+ area = prev;
+ ExaOffscreenMerge (pExaScr, area);
+ }
+
+ ExaOffscreenValidate (pScreen);
+ DBG_OFFSCREEN(("\tdone freeing\n"));
+ return area;
+}
+
+void
+ExaOffscreenMarkUsed (PixmapPtr pPixmap)
+{
+ ExaPixmapPriv (pPixmap);
+ ExaScreenPriv (pPixmap->drawable.pScreen);
+
+ if (!pExaPixmap || !pExaPixmap->area)
+ return;
+
+ pExaPixmap->area->last_use = pExaScr->offScreenCounter++;
+}
+
+/**
+ * Defragment offscreen memory by compacting allocated areas at the end of it,
+ * leaving the total amount of memory available as a single area at the
+ * beginning (when there are no pinned allocations).
+ */
+_X_HIDDEN ExaOffscreenArea*
+ExaOffscreenDefragment (ScreenPtr pScreen)
+{
+ ExaScreenPriv (pScreen);
+ ExaOffscreenArea *area, *largest_available = NULL;
+ int largest_size = 0;
+ PixmapPtr pDstPix;
+ ExaPixmapPrivPtr pExaDstPix;
+
+ pDstPix = (*pScreen->CreatePixmap) (pScreen, 0, 0, 0, 0);
+
+ if (!pDstPix)
+ return NULL;
+
+ pExaDstPix = ExaGetPixmapPriv (pDstPix);
+ pExaDstPix->use_gpu_copy = TRUE;
+
+ for (area = pExaScr->info->offScreenAreas->prev;
+ area != pExaScr->info->offScreenAreas;
+ )
+ {
+ ExaOffscreenArea *prev = area->prev;
+ PixmapPtr pSrcPix;
+ ExaPixmapPrivPtr pExaSrcPix;
+ Bool save_use_gpu_copy;
+ int save_pitch;
+
+ if (area->state != ExaOffscreenAvail ||
+ prev->state == ExaOffscreenLocked ||
+ (prev->state == ExaOffscreenRemovable &&
+ prev->save != exaPixmapSave)) {
+ area = prev;
+ continue;
+ }
+
+ if (prev->state == ExaOffscreenAvail) {
+ if (area == largest_available) {
+ largest_available = prev;
+ largest_size += prev->size;
+ }
+ area = prev;
+ ExaOffscreenMerge (pExaScr, area);
+ continue;
+ }
+
+ if (area->size > largest_size) {
+ largest_available = area;
+ largest_size = area->size;
+ }
+
+ pSrcPix = prev->privData;
+ pExaSrcPix = ExaGetPixmapPriv (pSrcPix);
+
+ pExaDstPix->fb_ptr = pExaScr->info->memoryBase +
+ area->base_offset + area->size - prev->size + prev->base_offset -
+ prev->offset;
+ pExaDstPix->fb_ptr -= (unsigned long)pExaDstPix->fb_ptr % prev->align;
+
+ if (pExaDstPix->fb_ptr <= pExaSrcPix->fb_ptr) {
+ area = prev;
+ continue;
+ }
+
+ if (!(pExaScr->info->flags & EXA_SUPPORTS_OFFSCREEN_OVERLAPS) &&
+ (pExaSrcPix->fb_ptr + prev->size) > pExaDstPix->fb_ptr) {
+ area = prev;
+ continue;
+ }
+
+ save_use_gpu_copy = pExaSrcPix->use_gpu_copy;
+ save_pitch = pSrcPix->devKind;
+
+ pExaSrcPix->use_gpu_copy = TRUE;
+ pSrcPix->devKind = pExaSrcPix->fb_pitch;
+
+ pDstPix->drawable.width = pSrcPix->drawable.width;
+ pDstPix->devKind = pSrcPix->devKind;
+ pDstPix->drawable.height = pSrcPix->drawable.height;
+ pDstPix->drawable.depth = pSrcPix->drawable.depth;
+ pDstPix->drawable.bitsPerPixel = pSrcPix->drawable.bitsPerPixel;
+
+ if (!pExaScr->info->PrepareCopy (pSrcPix, pDstPix, -1, -1, GXcopy, ~0)) {
+ pExaSrcPix->use_gpu_copy = save_use_gpu_copy;
+ pSrcPix->devKind = save_pitch;
+ area = prev;
+ continue;
+ }
+
+ pExaScr->info->Copy (pDstPix, 0, 0, 0, 0, pDstPix->drawable.width,
+ pDstPix->drawable.height);
+ pExaScr->info->DoneCopy (pDstPix);
+ exaMarkSync (pScreen);
+
+ DBG_OFFSCREEN(("Before swap: prev=0x%08x-0x%08x-0x%08x area=0x%08x-0x%08x-0x%08x\n",
+ prev->base_offset, prev->offset, prev->base_offset + prev->size,
+ area->base_offset, area->offset, area->base_offset + area->size));
+
+ /* Calculate swapped area offsets and sizes */
+ area->base_offset = prev->base_offset;
+ area->offset = area->base_offset;
+ prev->offset += pExaDstPix->fb_ptr - pExaSrcPix->fb_ptr;
+ assert(prev->offset >= pExaScr->info->offScreenBase &&
+ prev->offset < pExaScr->info->memorySize);
+ prev->base_offset = prev->offset;
+ if (area->next)
+ prev->size = area->next->base_offset - prev->base_offset;
+ else
+ prev->size = pExaScr->info->memorySize - prev->base_offset;
+ area->size = prev->base_offset - area->base_offset;
+
+ DBG_OFFSCREEN(("After swap: area=0x%08x-0x%08x-0x%08x prev=0x%08x-0x%08x-0x%08x\n",
+ area->base_offset, area->offset, area->base_offset + area->size,
+ prev->base_offset, prev->offset, prev->base_offset + prev->size));
+
+ /* Swap areas in list */
+ if (area->next)
+ area->next->prev = prev;
+ else
+ pExaScr->info->offScreenAreas->prev = prev;
+ if (prev->prev->next)
+ prev->prev->next = area;
+ else
+ pExaScr->info->offScreenAreas = area;
+ prev->next = area->next;
+ area->next = prev;
+ area->prev = prev->prev;
+ prev->prev = area;
+ if (!area->prev->next)
+ pExaScr->info->offScreenAreas = area;
+
+#if DEBUG_OFFSCREEN
+ if (prev->prev == prev || prev->next == prev)
+ ErrorF("Whoops, prev points to itself!\n");
+
+ if (area->prev == area || area->next == area)
+ ErrorF("Whoops, area points to itself!\n");
+#endif
+
+ pExaSrcPix->fb_ptr = pExaDstPix->fb_ptr;
+ pExaSrcPix->use_gpu_copy = save_use_gpu_copy;
+ pSrcPix->devKind = save_pitch;
+ }
+
+ pDstPix->drawable.width = 0;
+ pDstPix->drawable.height = 0;
+ pDstPix->drawable.depth = 0;
+ pDstPix->drawable.bitsPerPixel = 0;
+
+ (*pScreen->DestroyPixmap) (pDstPix);
+
+ if (area->state == ExaOffscreenAvail && area->size > largest_size)
+ return area;
+
+ return largest_available;
+}
+
+/**
+ * exaOffscreenInit initializes the offscreen memory manager.
+ *
+ * @param pScreen current screen
+ *
+ * exaOffscreenInit is called by exaDriverInit to set up the memory manager for
+ * the screen, if any offscreen memory is available.
+ */
+Bool
+exaOffscreenInit (ScreenPtr pScreen)
+{
+ ExaScreenPriv (pScreen);
+ ExaOffscreenArea *area;
+
+ /* Allocate a big free area */
+ area = malloc(sizeof (ExaOffscreenArea));
+
+ if (!area)
+ return FALSE;
+
+ area->state = ExaOffscreenAvail;
+ area->base_offset = pExaScr->info->offScreenBase;
+ area->offset = area->base_offset;
+ area->align = 0;
+ area->size = pExaScr->info->memorySize - area->base_offset;
+ area->save = NULL;
+ area->next = NULL;
+ area->prev = area;
+ area->last_use = 0;
+ area->eviction_cost = 0;
+
+ /* Add it to the free areas */
+ pExaScr->info->offScreenAreas = area;
+ pExaScr->offScreenCounter = 1;
+ pExaScr->numOffscreenAvailable = 1;
+
+ ExaOffscreenValidate (pScreen);
+
+ return TRUE;
+}
+
+void
+ExaOffscreenFini (ScreenPtr pScreen)
+{
+ ExaScreenPriv (pScreen);
+ ExaOffscreenArea *area;
+
+ /* just free all of the area records */
+ while ((area = pExaScr->info->offScreenAreas))
+ {
+ pExaScr->info->offScreenAreas = area->next;
+ free(area);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 23:26:04 +0000