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Diffstat (limited to 'xorg-server/exa/exa.c')
-rw-r--r--xorg-server/exa/exa.c2315
1 files changed, 1158 insertions, 1157 deletions
diff --git a/xorg-server/exa/exa.c b/xorg-server/exa/exa.c
index 9dbcf4d10..a4e294a71 100644
--- a/xorg-server/exa/exa.c
+++ b/xorg-server/exa/exa.c
@@ -1,1157 +1,1158 @@
-/*
- * 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"
-
-DevPrivateKeyRec exaScreenPrivateKeyRec;
-DevPrivateKeyRec exaPixmapPrivateKeyRec;
-DevPrivateKeyRec exaGCPrivateKeyRec;
-
-#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;
-
- RegionInit(&region, &box, 1);
- DamageDamageRegion(&pPix->drawable, &region);
- RegionUninit(&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);
-}
-
-
-/**
- * Helper for things common to all schemes when a pixmap is destroyed
- */
-void
-exaDestroyPixmap(PixmapPtr pPixmap)
-{
- ExaScreenPriv(pPixmap->drawable.pScreen);
- int i;
-
- /* Finish access if it was prepared (e.g. pixmap created during
- * software fallback)
- */
- for (i = 0; i < EXA_NUM_PREPARE_INDICES; i++) {
- if (pExaScr->access[i].pixmap == pPixmap) {
- exaFinishAccess(&pPixmap->drawable, i);
- pExaScr->access[i].pixmap = NULL;
- break;
- }
- }
-}
-
-
-/**
- * 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);
-
- if (!dixRegisterPrivateKey(&exaScreenPrivateKeyRec, PRIVATE_SCREEN, 0)) {
- LogMessage(X_WARNING, "EXA(%d): Failed to register screen private\n",
- pScreen->myNum);
- return FALSE;
- }
-
- 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 (!dixRegisterPrivateKey(&exaGCPrivateKeyRec, PRIVATE_GC, 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);
- } else {
- wrap(pExaScr, ps, Glyphs, ExaCheckGlyphs);
- }
- 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 (!dixRegisterPrivateKey(&exaPixmapPrivateKeyRec, PRIVATE_PIXMAP, 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"
+
+DevPrivateKeyRec exaScreenPrivateKeyRec;
+DevPrivateKeyRec exaPixmapPrivateKeyRec;
+DevPrivateKeyRec exaGCPrivateKeyRec;
+
+#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;
+
+ RegionInit(&region, &box, 1);
+ DamageDamageRegion(&pPix->drawable, &region);
+ RegionUninit(&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;
+
+ /* Only call FinishAccess if PrepareAccess was called and succeeded. */
+ if (!pExaScr->info->FinishAccess || !pExaScr->access[i].retval)
+ 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);
+}
+
+
+/**
+ * Helper for things common to all schemes when a pixmap is destroyed
+ */
+void
+exaDestroyPixmap(PixmapPtr pPixmap)
+{
+ ExaScreenPriv(pPixmap->drawable.pScreen);
+ int i;
+
+ /* Finish access if it was prepared (e.g. pixmap created during
+ * software fallback)
+ */
+ for (i = 0; i < EXA_NUM_PREPARE_INDICES; i++) {
+ if (pExaScr->access[i].pixmap == pPixmap) {
+ exaFinishAccess(&pPixmap->drawable, i);
+ pExaScr->access[i].pixmap = NULL;
+ break;
+ }
+ }
+}
+
+
+/**
+ * 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);
+
+ if (!dixRegisterPrivateKey(&exaScreenPrivateKeyRec, PRIVATE_SCREEN, 0)) {
+ LogMessage(X_WARNING, "EXA(%d): Failed to register screen private\n",
+ pScreen->myNum);
+ return FALSE;
+ }
+
+ 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 (!dixRegisterPrivateKey(&exaGCPrivateKeyRec, PRIVATE_GC, 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);
+ } else {
+ wrap(pExaScr, ps, Glyphs, ExaCheckGlyphs);
+ }
+ 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 (!dixRegisterPrivateKey(&exaPixmapPrivateKeyRec, PRIVATE_PIXMAP, 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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 11:57:58 +0000