frederik
/
xserver
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
xserver/exa/exa_migration_classic.c

762 lines
24 KiB
C
Raw Blame History

/*
* Copyright © 2006 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
* Michel Dänzer <michel@tungstengraphics.com>
*
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <string.h>
#include "exa_priv.h"
#include "exa.h"
#if DEBUG_MIGRATE
#define DBG_MIGRATE(a) ErrorF a
#else
#define DBG_MIGRATE(a)
#endif
/**
* The fallback path for UTS/DFS failing is to just memcpy. exaCopyDirtyToSys
* and exaCopyDirtyToFb both needed to do this loop.
*/
static void
exaMemcpyBox(PixmapPtr pPixmap, BoxPtr pbox, CARD8 *src, int src_pitch,
CARD8 *dst, int dst_pitch)
{
int i, cpp = pPixmap->drawable.bitsPerPixel / 8;
int bytes = (pbox->x2 - pbox->x1) * cpp;
src += pbox->y1 * src_pitch + pbox->x1 * cpp;
dst += pbox->y1 * dst_pitch + pbox->x1 * cpp;
for (i = pbox->y2 - pbox->y1; i; i--) {
memcpy(dst, src, bytes);
src += src_pitch;
dst += dst_pitch;
}
}
/**
* Returns TRUE if the pixmap is dirty (has been modified in its current
* location compared to the other), or lacks a private for tracking
* dirtiness.
*/
static Bool
exaPixmapIsDirty(PixmapPtr pPix)
{
ExaPixmapPriv(pPix);
if (pExaPixmap == NULL)
EXA_FatalErrorDebugWithRet(("EXA bug: exaPixmapIsDirty was called on a non-exa pixmap.\n"), TRUE);
if (!pExaPixmap->pDamage)
return FALSE;
return RegionNotEmpty(DamageRegion(pExaPixmap->pDamage)) ||
!RegionEqual(&pExaPixmap->validSys, &pExaPixmap->validFB);
}
/**
* Returns TRUE if the pixmap is either pinned in FB, or has a sufficient score
* to be considered "should be in framebuffer". That's just anything that has
* had more acceleration than fallbacks, or has no score yet.
*
* Only valid if using a migration scheme that tracks score.
*/
static Bool
exaPixmapShouldBeInFB(PixmapPtr pPix)
{
ExaPixmapPriv(pPix);
if (exaPixmapIsPinned(pPix))
return TRUE;
return pExaPixmap->score >= 0;
}
/**
* If the pixmap is currently dirty, this copies at least the dirty area from
* FB to system or vice versa. Both areas must be allocated.
*/
static void
exaCopyDirty(ExaMigrationPtr migrate, RegionPtr pValidDst, RegionPtr pValidSrc,
Bool (*transfer) (PixmapPtr pPix, int x, int y, int w, int h,
char *sys, int sys_pitch), int fallback_index,
void (*sync) (ScreenPtr pScreen))
{
PixmapPtr pPixmap = migrate->pPix;
ExaPixmapPriv(pPixmap);
RegionPtr damage = DamageRegion(pExaPixmap->pDamage);
RegionRec CopyReg;
Bool save_use_gpu_copy;
int save_pitch;
BoxPtr pBox;
int nbox;
Bool access_prepared = FALSE;
Bool need_sync = FALSE;
/* Damaged bits are valid in current copy but invalid in other one */
if (pExaPixmap->use_gpu_copy) {
RegionUnion(&pExaPixmap->validFB, &pExaPixmap->validFB, damage);
RegionSubtract(&pExaPixmap->validSys, &pExaPixmap->validSys, damage);
}
else {
RegionUnion(&pExaPixmap->validSys, &pExaPixmap->validSys, damage);
RegionSubtract(&pExaPixmap->validFB, &pExaPixmap->validFB, damage);
}
RegionEmpty(damage);
/* Copy bits valid in source but not in destination */
RegionNull(&CopyReg);
RegionSubtract(&CopyReg, pValidSrc, pValidDst);
if (migrate->as_dst) {
ExaScreenPriv(pPixmap->drawable.pScreen);
/* XXX: The pending damage region will be marked as damaged after the
* operation, so it should serve as an upper bound for the region that
* needs to be synchronized for the operation. Unfortunately, this
* causes corruption in some cases, e.g. when starting compiz. See
* https://bugs.freedesktop.org/show_bug.cgi?id=12916 .
*/
if (pExaScr->optimize_migration) {
RegionPtr pending_damage = DamagePendingRegion(pExaPixmap->pDamage);
#if DEBUG_MIGRATE
if (RegionNil(pending_damage)) {
static Bool firsttime = TRUE;
if (firsttime) {
ErrorF("%s: Pending damage region empty!\n", __func__);
firsttime = FALSE;
}
}
#endif
/* Try to prevent destination valid region from growing too many
* rects by filling it up to the extents of the union of the
* destination valid region and the pending damage region.
*/
if (RegionNumRects(pValidDst) > 10) {
BoxRec box;
BoxPtr pValidExt, pDamageExt;
RegionRec closure;
pValidExt = RegionExtents(pValidDst);
pDamageExt = RegionExtents(pending_damage);
box.x1 = min(pValidExt->x1, pDamageExt->x1);
box.y1 = min(pValidExt->y1, pDamageExt->y1);
box.x2 = max(pValidExt->x2, pDamageExt->x2);
box.y2 = max(pValidExt->y2, pDamageExt->y2);
RegionInit(&closure, &box, 0);
RegionIntersect(&CopyReg, &CopyReg, &closure);
}
else
RegionIntersect(&CopyReg, &CopyReg, pending_damage);
}
/* The caller may provide a region to be subtracted from the calculated
* dirty region. This is to avoid migration of bits that don't
* contribute to the result of the operation.
*/
if (migrate->pReg)
RegionSubtract(&CopyReg, &CopyReg, migrate->pReg);
}
else {
/* The caller may restrict the region to be migrated for source pixmaps
* to what's relevant for the operation.
*/
if (migrate->pReg)
RegionIntersect(&CopyReg, &CopyReg, migrate->pReg);
}
pBox = RegionRects(&CopyReg);
nbox = RegionNumRects(&CopyReg);
save_use_gpu_copy = pExaPixmap->use_gpu_copy;
save_pitch = pPixmap->devKind;
pExaPixmap->use_gpu_copy = TRUE;
pPixmap->devKind = pExaPixmap->fb_pitch;
while (nbox--) {
pBox->x1 = max(pBox->x1, 0);
pBox->y1 = max(pBox->y1, 0);
pBox->x2 = min(pBox->x2, pPixmap->drawable.width);
pBox->y2 = min(pBox->y2, pPixmap->drawable.height);
if (pBox->x1 >= pBox->x2 || pBox->y1 >= pBox->y2)
continue;
if (!transfer || !transfer(pPixmap,
pBox->x1, pBox->y1,
pBox->x2 - pBox->x1,
pBox->y2 - pBox->y1,
(char *) (pExaPixmap->sys_ptr
+ pBox->y1 * pExaPixmap->sys_pitch
+
pBox->x1 *
pPixmap->drawable.bitsPerPixel /
8), pExaPixmap->sys_pitch)) {
if (!access_prepared) {
ExaDoPrepareAccess(pPixmap, fallback_index);
access_prepared = TRUE;
}
if (fallback_index == EXA_PREPARE_DEST) {
exaMemcpyBox(pPixmap, pBox,
pExaPixmap->sys_ptr, pExaPixmap->sys_pitch,
pPixmap->devPrivate.ptr, pPixmap->devKind);
}
else {
exaMemcpyBox(pPixmap, pBox,
pPixmap->devPrivate.ptr, pPixmap->devKind,
pExaPixmap->sys_ptr, pExaPixmap->sys_pitch);
}
}
else
need_sync = TRUE;
pBox++;
}
pExaPixmap->use_gpu_copy = save_use_gpu_copy;
pPixmap->devKind = save_pitch;
/* Try to prevent source valid region from growing too many rects by
* removing parts of it which are also in the destination valid region.
* Removing anything beyond that would lead to data loss.
*/
if (RegionNumRects(pValidSrc) > 20)
RegionSubtract(pValidSrc, pValidSrc, pValidDst);
/* The copied bits are now valid in destination */
RegionUnion(pValidDst, pValidDst, &CopyReg);
RegionUninit(&CopyReg);
if (access_prepared)
exaFinishAccess(&pPixmap->drawable, fallback_index);
else if (need_sync && sync)
sync(pPixmap->drawable.pScreen);
}
/**
* If the pixmap is currently dirty, this copies at least the dirty area from
* the framebuffer memory copy to the system memory copy. Both areas must be
* allocated.
*/
void
exaCopyDirtyToSys(ExaMigrationPtr migrate)
{
PixmapPtr pPixmap = migrate->pPix;
ExaScreenPriv(pPixmap->drawable.pScreen);
ExaPixmapPriv(pPixmap);
exaCopyDirty(migrate, &pExaPixmap->validSys, &pExaPixmap->validFB,
pExaScr->info->DownloadFromScreen, EXA_PREPARE_SRC,
exaWaitSync);
}
/**
* If the pixmap is currently dirty, this copies at least the dirty area from
* the system memory copy to the framebuffer memory copy. Both areas must be
* allocated.
*/
void
exaCopyDirtyToFb(ExaMigrationPtr migrate)
{
PixmapPtr pPixmap = migrate->pPix;
ExaScreenPriv(pPixmap->drawable.pScreen);
ExaPixmapPriv(pPixmap);
exaCopyDirty(migrate, &pExaPixmap->validFB, &pExaPixmap->validSys,
pExaScr->info->UploadToScreen, EXA_PREPARE_DEST, NULL);
}
/**
* Allocates a framebuffer copy of the pixmap if necessary, and then copies
* any necessary pixmap data into the framebuffer copy and points the pixmap at
* it.
*
* Note that when first allocated, a pixmap will have FALSE dirty flag.
* This is intentional because pixmap data starts out undefined. So if we move
* it in due to the first operation against it being accelerated, it will have
* undefined framebuffer contents that we didn't have to upload. If we do
* moveouts (and moveins) after the first movein, then we will only have to copy
* back and forth if the pixmap was written to after the last synchronization of
* the two copies. Then, at exaPixmapSave (when the framebuffer copy goes away)
* we mark the pixmap dirty, so that the next exaMoveInPixmap will actually move
* all the data, since it's almost surely all valid now.
*/
static void
exaDoMoveInPixmap(ExaMigrationPtr migrate)
{
PixmapPtr pPixmap = migrate->pPix;
ScreenPtr pScreen = pPixmap->drawable.pScreen;
ExaScreenPriv(pScreen);
ExaPixmapPriv(pPixmap);
/* If we're VT-switched away, no touching card memory allowed. */
if (pExaScr->swappedOut)
return;
/* If we're not allowed to move, then fail. */
if (exaPixmapIsPinned(pPixmap))
return;
/* Don't migrate in pixmaps which are less than 8bpp. This avoids a lot of
* fragility in EXA, and <8bpp is probably not used enough any more to care
* (at least, not in acceleratd paths).
*/
if (pPixmap->drawable.bitsPerPixel < 8)
return;
if (pExaPixmap->accel_blocked)
return;
if (pExaPixmap->area == NULL) {
pExaPixmap->area =
exaOffscreenAlloc(pScreen, pExaPixmap->fb_size,
pExaScr->info->pixmapOffsetAlign, FALSE,
exaPixmapSave, (void *) pPixmap);
if (pExaPixmap->area == NULL)
return;
pExaPixmap->fb_ptr = (CARD8 *) pExaScr->info->memoryBase +
pExaPixmap->area->offset;
}
exaCopyDirtyToFb(migrate);
if (exaPixmapHasGpuCopy(pPixmap))
return;
DBG_MIGRATE(("-> %p (0x%x) (%dx%d) (%c)\n", pPixmap,
(ExaGetPixmapPriv(pPixmap)->area ?
ExaGetPixmapPriv(pPixmap)->area->offset : 0),
pPixmap->drawable.width,
pPixmap->drawable.height,
exaPixmapIsDirty(pPixmap) ? 'd' : 'c'));
pExaPixmap->use_gpu_copy = TRUE;
pPixmap->devKind = pExaPixmap->fb_pitch;
pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
}
void
exaMoveInPixmap_classic(PixmapPtr pPixmap)
{
static ExaMigrationRec migrate = {.as_dst = FALSE,.as_src = TRUE,
.pReg = NULL
};
migrate.pPix = pPixmap;
exaDoMoveInPixmap(&migrate);
}
/**
* Switches the current active location of the pixmap to system memory, copying
* updated data out if necessary.
*/
static void
exaDoMoveOutPixmap(ExaMigrationPtr migrate)
{
PixmapPtr pPixmap = migrate->pPix;
ExaPixmapPriv(pPixmap);
if (!pExaPixmap->area || exaPixmapIsPinned(pPixmap))
return;
exaCopyDirtyToSys(migrate);
if (exaPixmapHasGpuCopy(pPixmap)) {
DBG_MIGRATE(("<- %p (%p) (%dx%d) (%c)\n", pPixmap,
(void *) (ExaGetPixmapPriv(pPixmap)->area ?
ExaGetPixmapPriv(pPixmap)->area->offset : 0),
pPixmap->drawable.width,
pPixmap->drawable.height,
exaPixmapIsDirty(pPixmap) ? 'd' : 'c'));
pExaPixmap->use_gpu_copy = FALSE;
pPixmap->devKind = pExaPixmap->sys_pitch;
pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
}
}
void
exaMoveOutPixmap_classic(PixmapPtr pPixmap)
{
static ExaMigrationRec migrate = {.as_dst = FALSE,.as_src = TRUE,
.pReg = NULL
};
migrate.pPix = pPixmap;
exaDoMoveOutPixmap(&migrate);
}
/**
* Copies out important pixmap data and removes references to framebuffer area.
* Called when the memory manager decides it's time to kick the pixmap out of
* framebuffer entirely.
*/
void
exaPixmapSave(ScreenPtr pScreen, ExaOffscreenArea * area)
{
PixmapPtr pPixmap = area->privData;
ExaPixmapPriv(pPixmap);
exaMoveOutPixmap(pPixmap);
pExaPixmap->fb_ptr = NULL;
pExaPixmap->area = NULL;
/* Mark all FB bits as invalid, so all valid system bits get copied to FB
* next time */
RegionEmpty(&pExaPixmap->validFB);
}
/**
* For the "greedy" migration scheme, pushes the pixmap toward being located in
* framebuffer memory.
*/
static void
exaMigrateTowardFb(ExaMigrationPtr migrate)
{
PixmapPtr pPixmap = migrate->pPix;
ExaPixmapPriv(pPixmap);
if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED) {
DBG_MIGRATE(("UseScreen: not migrating pinned pixmap %p\n",
(void *) pPixmap));
return;
}
DBG_MIGRATE(("UseScreen %p score %d\n",
(void *) pPixmap, pExaPixmap->score));
if (pExaPixmap->score == EXA_PIXMAP_SCORE_INIT) {
exaDoMoveInPixmap(migrate);
pExaPixmap->score = 0;
}
if (pExaPixmap->score < EXA_PIXMAP_SCORE_MAX)
pExaPixmap->score++;
if (pExaPixmap->score >= EXA_PIXMAP_SCORE_MOVE_IN &&
!exaPixmapHasGpuCopy(pPixmap)) {
exaDoMoveInPixmap(migrate);
}
if (exaPixmapHasGpuCopy(pPixmap)) {
exaCopyDirtyToFb(migrate);
ExaOffscreenMarkUsed(pPixmap);
}
else
exaCopyDirtyToSys(migrate);
}
/**
* For the "greedy" migration scheme, pushes the pixmap toward being located in
* system memory.
*/
static void
exaMigrateTowardSys(ExaMigrationPtr migrate)
{
PixmapPtr pPixmap = migrate->pPix;
ExaPixmapPriv(pPixmap);
DBG_MIGRATE(("UseMem: %p score %d\n", (void *) pPixmap,
pExaPixmap->score));
if (pExaPixmap->score == EXA_PIXMAP_SCORE_PINNED)
return;
if (pExaPixmap->score == EXA_PIXMAP_SCORE_INIT)
pExaPixmap->score = 0;
if (pExaPixmap->score > EXA_PIXMAP_SCORE_MIN)
pExaPixmap->score--;
if (pExaPixmap->score <= EXA_PIXMAP_SCORE_MOVE_OUT && pExaPixmap->area)
exaDoMoveOutPixmap(migrate);
if (exaPixmapHasGpuCopy(pPixmap)) {
exaCopyDirtyToFb(migrate);
ExaOffscreenMarkUsed(pPixmap);
}
else
exaCopyDirtyToSys(migrate);
}
/**
* If the pixmap has both a framebuffer and system memory copy, this function
* asserts that both of them are the same.
*/
static Bool
exaAssertNotDirty(PixmapPtr pPixmap)
{
ExaPixmapPriv(pPixmap);
CARD8 *dst, *src;
RegionRec ValidReg;
int dst_pitch, src_pitch, cpp, y, nbox, save_pitch;
BoxPtr pBox;
Bool ret = TRUE, save_use_gpu_copy;
if (exaPixmapIsPinned(pPixmap) || pExaPixmap->area == NULL)
return ret;
RegionNull(&ValidReg);
RegionIntersect(&ValidReg, &pExaPixmap->validFB, &pExaPixmap->validSys);
nbox = RegionNumRects(&ValidReg);
if (!nbox)
goto out;
pBox = RegionRects(&ValidReg);
dst_pitch = pExaPixmap->sys_pitch;
src_pitch = pExaPixmap->fb_pitch;
cpp = pPixmap->drawable.bitsPerPixel / 8;
save_use_gpu_copy = pExaPixmap->use_gpu_copy;
save_pitch = pPixmap->devKind;
pExaPixmap->use_gpu_copy = TRUE;
pPixmap->devKind = pExaPixmap->fb_pitch;
if (!ExaDoPrepareAccess(pPixmap, EXA_PREPARE_SRC))
goto skip;
while (nbox--) {
int rowbytes;
pBox->x1 = max(pBox->x1, 0);
pBox->y1 = max(pBox->y1, 0);
pBox->x2 = min(pBox->x2, pPixmap->drawable.width);
pBox->y2 = min(pBox->y2, pPixmap->drawable.height);
if (pBox->x1 >= pBox->x2 || pBox->y1 >= pBox->y2)
continue;
rowbytes = (pBox->x2 - pBox->x1) * cpp;
src =
(CARD8 *) pPixmap->devPrivate.ptr + pBox->y1 * src_pitch +
pBox->x1 * cpp;
dst = pExaPixmap->sys_ptr + pBox->y1 * dst_pitch + pBox->x1 * cpp;
for (y = pBox->y1; y < pBox->y2;
y++, src += src_pitch, dst += dst_pitch) {
if (memcmp(dst, src, rowbytes) != 0) {
ret = FALSE;
exaPixmapDirty(pPixmap, pBox->x1, pBox->y1, pBox->x2, pBox->y2);
break;
}
}
}
skip:
exaFinishAccess(&pPixmap->drawable, EXA_PREPARE_SRC);
pExaPixmap->use_gpu_copy = save_use_gpu_copy;
pPixmap->devKind = save_pitch;
out:
RegionUninit(&ValidReg);
return ret;
}
/**
* 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_classic(ExaMigrationPtr pixmaps, int npixmaps, Bool can_accel)
{
ScreenPtr pScreen = pixmaps[0].pPix->drawable.pScreen;
ExaScreenPriv(pScreen);
int i, j;
/* If this debugging flag is set, check each pixmap for whether it is marked
* as clean, and if so, actually check if that's the case. This should help
* catch issues with failing to mark a drawable as dirty. While it will
* catch them late (after the operation happened), it at least explains what
* went wrong, and instrumenting the code to find what operation happened
* to the pixmap last shouldn't be hard.
*/
if (pExaScr->checkDirtyCorrectness) {
for (i = 0; i < npixmaps; i++) {
if (!exaPixmapIsDirty(pixmaps[i].pPix) &&
!exaAssertNotDirty(pixmaps[i].pPix))
ErrorF("%s: Pixmap %d dirty but not marked as such!\n",
__func__, i);
}
}
/* If anything is pinned in system memory, we won't be able to
* accelerate.
*/
for (i = 0; i < npixmaps; i++) {
if (exaPixmapIsPinned(pixmaps[i].pPix) &&
!exaPixmapHasGpuCopy(pixmaps[i].pPix)) {
EXA_FALLBACK(("Pixmap %p (%dx%d) pinned in sys\n", pixmaps[i].pPix,
pixmaps[i].pPix->drawable.width,
pixmaps[i].pPix->drawable.height));
can_accel = FALSE;
break;
}
}
if (pExaScr->migration == ExaMigrationSmart) {
/* If we've got something as a destination that we shouldn't cause to
* become newly dirtied, take the unaccelerated route.
*/
for (i = 0; i < npixmaps; i++) {
if (pixmaps[i].as_dst && !exaPixmapShouldBeInFB(pixmaps[i].pPix) &&
!exaPixmapIsDirty(pixmaps[i].pPix)) {
for (i = 0; i < npixmaps; i++) {
if (!exaPixmapIsDirty(pixmaps[i].pPix))
exaDoMoveOutPixmap(pixmaps + i);
}
return;
}
}
/* If we aren't going to accelerate, then we migrate everybody toward
* system memory, and kick out if it's free.
*/
if (!can_accel) {
for (i = 0; i < npixmaps; i++) {
exaMigrateTowardSys(pixmaps + i);
if (!exaPixmapIsDirty(pixmaps[i].pPix))
exaDoMoveOutPixmap(pixmaps + i);
}
return;
}
/* Finally, the acceleration path. Move them all in. */
for (i = 0; i < npixmaps; i++) {
exaMigrateTowardFb(pixmaps + i);
exaDoMoveInPixmap(pixmaps + i);
}
}
else if (pExaScr->migration == ExaMigrationGreedy) {
/* If we can't accelerate, either because the driver can't or because one of
* the pixmaps is pinned in system memory, then we migrate everybody toward
* system memory.
*
* We also migrate toward system if all pixmaps involved are currently in
* system memory -- this can mitigate thrashing when there are significantly
* more pixmaps active than would fit in memory.
*
* If not, then we migrate toward FB so that hopefully acceleration can
* happen.
*/
if (!can_accel) {
for (i = 0; i < npixmaps; i++)
exaMigrateTowardSys(pixmaps + i);
return;
}
for (i = 0; i < npixmaps; i++) {
if (exaPixmapHasGpuCopy(pixmaps[i].pPix)) {
/* Found one in FB, so move all to FB. */
for (j = 0; j < npixmaps; j++)
exaMigrateTowardFb(pixmaps + i);
return;
}
}
/* Nobody's in FB, so move all away from FB. */
for (i = 0; i < npixmaps; i++)
exaMigrateTowardSys(pixmaps + i);
}
else if (pExaScr->migration == ExaMigrationAlways) {
/* Always move the pixmaps out if we can't accelerate. If we can
* accelerate, try to move them all in. If that fails, then move them
* back out.
*/
if (!can_accel) {
for (i = 0; i < npixmaps; i++)
exaDoMoveOutPixmap(pixmaps + i);
return;
}
/* Now, try to move them all into FB */
for (i = 0; i < npixmaps; i++) {
exaDoMoveInPixmap(pixmaps + i);
}
/* If we couldn't fit everything in, abort */
for (i = 0; i < npixmaps; i++) {
if (!exaPixmapHasGpuCopy(pixmaps[i].pPix)) {
return;
}
}
/* Yay, everything has a gpu copy, mark memory as used */
for (i = 0; i < npixmaps; i++) {
ExaOffscreenMarkUsed(pixmaps[i].pPix);
}
}
}
void
exaPrepareAccessReg_classic(PixmapPtr pPixmap, int index, RegionPtr pReg)
{
ExaMigrationRec pixmaps[1];
if (index == EXA_PREPARE_DEST || index == EXA_PREPARE_AUX_DEST) {
pixmaps[0].as_dst = TRUE;
pixmaps[0].as_src = FALSE;
}
else {
pixmaps[0].as_dst = FALSE;
pixmaps[0].as_src = TRUE;
}
pixmaps[0].pPix = pPixmap;
pixmaps[0].pReg = pReg;
exaDoMigration(pixmaps, 1, FALSE);
(void) ExaDoPrepareAccess(pPixmap, index);
}
Reference in New Issue View Git Blame Copy Permalink