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Add accelerated two directional blt support to EXA

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This commit is contained in:
Jesse Barnes 2006-03-01 16:28:34 +00:00
parent 96ca329382
commit 044a3abb38
2 changed files with 126 additions and 1 deletions
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2
exa/exa.h
View File

@ -206,7 +206,7 @@ typedef struct _ExaDriver {
#define EXA_OFFSCREEN_PIXMAPS (1 << 0)
#define EXA_OFFSCREEN_ALIGN_POT (1 << 1)
#define EXA_TWO_BITBLT_DIRECTIONS (1 << 2)
#define EXA_MAKE_VERSION(a, b, c) (((a) << 16) | ((b) << 8) | (c))
#define EXA_VERSION \

125
exa/exa_accel.c
View File

@ -124,6 +124,123 @@ exaFillSpans(DrawablePtr pDrawable, GCPtr pGC, int n,
exaMarkSync(pScreen);
}
static Bool inline
exaCopyNtoNTwoDir (DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,
GCPtr pGC, BoxPtr pbox, int nbox, int dx, int dy)
{
ExaScreenPriv (pDstDrawable->pScreen);
PixmapPtr pSrcPixmap, pDstPixmap;
int src_off_x, src_off_y, dst_off_x, dst_off_y;
int dirsetup;
/* Need to get both pixmaps to call the driver routines */
pSrcPixmap = exaGetOffscreenPixmap (pSrcDrawable, &src_off_x, &src_off_y);
pDstPixmap = exaGetOffscreenPixmap (pDstDrawable, &dst_off_x, &dst_off_y);
if (!pSrcPixmap || !pDstPixmap)
return FALSE;
/*
* Now the case of a chip that only supports xdir = ydir = 1 or
* xdir = ydir = -1, but we have xdir != ydir.
*/
dirsetup = 0; /* No direction set up yet. */
for (; nbox; pbox++, nbox--) {
if (dx >= 0 && (src_off_y + pbox->y1 + dy) != pbox->y1) {
/* Do a xdir = ydir = -1 blit instead. */
if (dirsetup != -1) {
dirsetup = -1;
if (!(*pExaScr->info->accel.PrepareCopy)(pSrcPixmap,
pDstPixmap,
-1, -1,
pGC ? pGC->alu :
GXcopy,
pGC ? pGC->planemask :
FB_ALLONES))
return FALSE;
}
(*pExaScr->info->accel.Copy)(pDstPixmap,
src_off_x + pbox->x1 + dx,
src_off_y + pbox->y1 + dy,
dst_off_x + pbox->x1,
dst_off_y + pbox->y1,
pbox->x2 - pbox->x1,
pbox->y2 - pbox->y1);
} else if (dx < 0 && (src_off_y + pbox->y1 + dy) != pbox->y1) {
/* Do a xdir = ydir = 1 blit instead. */
if (dirsetup != 1) {
dirsetup = 1;
if (!(*pExaScr->info->accel.PrepareCopy)(pSrcPixmap,
pDstPixmap,
1, 1,
pGC ? pGC->alu :
GXcopy,
pGC ? pGC->planemask :
FB_ALLONES))
return FALSE;
}
(*pExaScr->info->accel.Copy)(pDstPixmap,
src_off_x + pbox->x1 + dx,
src_off_y + pbox->y1 + dy,
dst_off_x + pbox->x1,
dst_off_y + pbox->y1,
pbox->x2 - pbox->x1,
pbox->y2 - pbox->y1);
} else if (dx >= 0) {
/*
* xdir = 1, ydir = -1.
* Perform line-by-line xdir = ydir = 1 blits, going up.
*/
int i;
if (dirsetup != 1) {
dirsetup = 1;
if (!(*pExaScr->info->accel.PrepareCopy)(pSrcPixmap,
pDstPixmap,
1, 1,
pGC ? pGC->alu :
GXcopy,
pGC ? pGC->planemask :
FB_ALLONES))
return FALSE;
}
for (i = pbox->y2 - pbox->y1 - 1; i >= 0; i--)
(*pExaScr->info->accel.Copy)(pDstPixmap,
src_off_x + pbox->x1 + dx,
src_off_y + pbox->y1 + dy + i,
dst_off_x + pbox->x1,
dst_off_y + pbox->y1 + i,
pbox->x2 - pbox->x1, 1);
} else {
/*
* xdir = -1, ydir = 1.
* Perform line-by-line xdir = ydir = -1 blits, going down.
*/
int i;
if (dirsetup != -1) {
dirsetup = -1;
if (!(*pExaScr->info->accel.PrepareCopy)(pSrcPixmap,
pDstPixmap,
-1, -1,
pGC ? pGC->alu :
GXcopy,
pGC ? pGC->planemask :
FB_ALLONES))
return FALSE;
}
for (i = 0; i < pbox->y2 - pbox->y1; i++)
(*pExaScr->info->accel.Copy)(pDstPixmap,
src_off_x + pbox->x1 + dx,
src_off_y + pbox->y1 + dy + i,
dst_off_x + pbox->x1,
dst_off_y + pbox->y1 + i,
pbox->x2 - pbox->x1, 1);
}
}
(*pExaScr->info->accel.DoneCopy)(pDstPixmap);
exaMarkSync(pDstDrawable->pScreen);
exaDrawableDirty(pDstDrawable);
return TRUE;
}
void
exaCopyNtoN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
@ -169,6 +286,14 @@ exaCopyNtoN (DrawablePtr pSrcDrawable,
exaDrawableUseMemory (pDstDrawable);
}
/* Mixed directions must be handled specially if the card is lame */
if (pExaScr->info->card.flags & EXA_TWO_BITBLT_DIRECTIONS && (dx*dy) < 0) {
if (!exaCopyNtoNTwoDir(pSrcDrawable, pDstDrawable, pGC, pbox, nbox,
dx, dy))
goto fallback;
return;
}
if ((pSrcPixmap = exaGetOffscreenPixmap (pSrcDrawable, &src_off_x, &src_off_y)) &&
(pDstPixmap = exaGetOffscreenPixmap (pDstDrawable, &dst_off_x, &dst_off_y)) &&
(*pExaScr->info->accel.PrepareCopy) (pSrcPixmap,