/**
* exaValidateGC() sets the ops to EXA's implementations, which may be
* accelerated or may sync the card and fall back to fb.
*/
static void
exaValidateGC (GCPtr pGC, unsigned long changes, DrawablePtr pDrawable)
{
/* fbValidateGC will do direct access to pixmaps if the tiling has changed.
* Preempt fbValidateGC by doing its work and masking the change out, so
* that we can do the Prepare/FinishAccess.
*/
#ifdef FB_24_32BIT
if ((changes & GCTile) && fbGetRotatedPixmap(pGC)) {
(*pGC->pScreen->DestroyPixmap) (fbGetRotatedPixmap(pGC));
fbGetRotatedPixmap(pGC) = 0;
}
if (pGC->fillStyle == FillTiled) {
PixmapPtr pOldTile, pNewTile;
pOldTile = pGC->tile.pixmap;
if (pOldTile->drawable.bitsPerPixel != pDrawable->bitsPerPixel)
{
pNewTile = fbGetRotatedPixmap(pGC);
if (!pNewTile ||
pNewTile ->drawable.bitsPerPixel != pDrawable->bitsPerPixel)
{
if (pNewTile)
(*pGC->pScreen->DestroyPixmap) (pNewTile);
/* fb24_32ReformatTile will do direct access of a newly-
* allocated pixmap. This isn't a problem yet, since we don't
* put pixmaps in FB until at least one accelerated EXA op.
*/
exaPrepareAccess(&pOldTile->drawable, EXA_PREPARE_SRC);
pNewTile = fb24_32ReformatTile (pOldTile,
pDrawable->bitsPerPixel);
exaPixmapDirty(pNewTile, 0, 0, pNewTile->drawable.width, pNewTile->drawable.height);
exaFinishAccess(&pOldTile->drawable, EXA_PREPARE_SRC);
}
if (pNewTile)
{
fbGetRotatedPixmap(pGC) = pOldTile;
pGC->tile.pixmap = pNewTile;
changes |= GCTile;
}
}
}
#endif
if (changes & GCTile) {
if (!pGC->tileIsPixel && FbEvenTile (pGC->tile.pixmap->drawable.width *
pDrawable->bitsPerPixel))
{
/* XXX This fixes corruption with tiled pixmaps, but may just be a
* workaround for broken drivers
*/
exaMoveOutPixmap(pGC->tile.pixmap);
fbPadPixmap (pGC->tile.pixmap);
exaPixmapDirty(pGC->tile.pixmap, 0, 0,
pGC->tile.pixmap->drawable.width,
pGC->tile.pixmap->drawable.height);
}
/* Mask out the GCTile change notification, now that we've done FB's
* job for it.
*/
changes &= ~GCTile;
}
fbValidateGC (pGC, changes, pDrawable);
pGC->ops = (GCOps *) &exaOps;
}
/**
* 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;
}
/* 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 = GetGlyphPicture(pGlyph, pScreen);
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);
}
/* With mixed pixmaps, if we fail to get direct access to the driver pixmap, we
* use the DownloadFromScreen hook to retrieve contents to a copy in system
* memory, perform software rendering on that and move back the results with the
* UploadToScreen hook (see exaDamageReport_mixed).
*/
void
exaPrepareAccessReg_mixed(PixmapPtr pPixmap, int index, RegionPtr pReg)
{
ExaPixmapPriv(pPixmap);
Bool has_gpu_copy = exaPixmapHasGpuCopy(pPixmap);
Bool success;
success = ExaDoPrepareAccess(pPixmap, index);
if (success && has_gpu_copy && pExaPixmap->pDamage) {
/* You cannot do accelerated operations while a buffer is mapped. */
exaFinishAccess(&pPixmap->drawable, index);
/* Update the gpu view of both deferred destination pixmaps and of
* source pixmaps that were migrated with a bounding region.
*/
exaMoveInPixmap_mixed(pPixmap);
success = ExaDoPrepareAccess(pPixmap, index);
if (success) {
/* We have a gpu pixmap that can be accessed, we don't need the cpu
* copy anymore. Drivers that prefer DFS, should fail prepare
* access.
*/
DamageDestroy(pExaPixmap->pDamage);
pExaPixmap->pDamage = NULL;
free(pExaPixmap->sys_ptr);
pExaPixmap->sys_ptr = NULL;
return;
}
}
if (!success) {
ExaMigrationRec pixmaps[1];
/* Do we need to allocate our system buffer? */
if (!pExaPixmap->sys_ptr) {
pExaPixmap->sys_ptr = malloc(pExaPixmap->sys_pitch *
pPixmap->drawable.height);
if (!pExaPixmap->sys_ptr)
FatalError("EXA: malloc failed for size %d bytes\n",
pExaPixmap->sys_pitch * pPixmap->drawable.height);
}
if (index == EXA_PREPARE_DEST || index == EXA_PREPARE_AUX_DEST) {
pixmaps[0].as_dst = TRUE;
pixmaps[0].as_src = FALSE;
}
else {
pixmaps[0].as_dst = FALSE;
pixmaps[0].as_src = TRUE;
}
pixmaps[0].pPix = pPixmap;
pixmaps[0].pReg = pReg;
if (!pExaPixmap->pDamage &&
(has_gpu_copy || !exaPixmapIsPinned(pPixmap))) {
Bool as_dst = pixmaps[0].as_dst;
/* Set up damage tracking */
pExaPixmap->pDamage = DamageCreate(exaDamageReport_mixed, NULL,
DamageReportNonEmpty, TRUE,
pPixmap->drawable.pScreen,
pPixmap);
if (pExaPixmap->pDamage) {
DamageRegister(&pPixmap->drawable, pExaPixmap->pDamage);
/* This ensures that pending damage reflects the current
* operation. This is used by exa to optimize migration.
*/
DamageSetReportAfterOp(pExaPixmap->pDamage, TRUE);
}
if (has_gpu_copy) {
exaPixmapDirty(pPixmap, 0, 0, pPixmap->drawable.width,
pPixmap->drawable.height);
/* We don't know which region of the destination will be damaged,
* have to assume all of it
*/
if (as_dst) {
pixmaps[0].as_dst = FALSE;
pixmaps[0].as_src = TRUE;
pixmaps[0].pReg = NULL;
}
exaCopyDirtyToSys(pixmaps);
}
if (as_dst)
exaPixmapDirty(pPixmap, 0, 0, pPixmap->drawable.width,
pPixmap->drawable.height);
}
else if (has_gpu_copy)
exaCopyDirtyToSys(pixmaps);
pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
pPixmap->devKind = pExaPixmap->sys_pitch;
pExaPixmap->use_gpu_copy = FALSE;
}
}
