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xserver-multidpi/exa/exa_render.c
Keith Packard 9838b7032e Introduce a consistent coding style 
This is strictly the application of the script 'x-indent-all.sh'
from util/modular. Compared to the patch that Daniel posted in
January, I've added a few indent flags:

	-bap
	-psl
	-T PrivatePtr
	-T pmWait
	-T _XFUNCPROTOBEGIN
	-T _XFUNCPROTOEND
	-T _X_EXPORT

The typedefs were needed to make the output of sdksyms.sh match the
previous output, otherwise, the code is formatted badly enough that
sdksyms.sh generates incorrect output.

The generated code was compared with the previous version and found to
be essentially identical -- "assert" line numbers and BUILD_TIME were
the only differences found.

The comparison was done with this script:

dir1=$1
dir2=$2

for dir in $dir1 $dir2; do
	(cd $dir && find . -name '*.o' | while read file; do
		dir=`dirname $file`
		base=`basename $file .o`
		dump=$dir/$base.dump
		objdump -d $file > $dump
	done)
done

find $dir1 -name '*.dump' | while read dump; do
	otherdump=`echo $dump | sed "s;$dir1;$dir2;"`
	diff -u $dump $otherdump
done

Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Daniel Stone <daniel@fooishbar.org>
Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2012-03-21 13:54:42 -07:00

1226 lines
39 KiB
C
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/*
* 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.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <stdlib.h>
#include "exa_priv.h"
#include "mipict.h"
#if DEBUG_TRACE_FALL
static void
exaCompositeFallbackPictDesc(PicturePtr pict, char *string, int n)
{
char format[20];
char size[20];
char loc;
int temp;
if (!pict) {
snprintf(string, n, "None");
return;
}
switch (pict->format) {
case PICT_a8r8g8b8:
snprintf(format, 20, "ARGB8888");
break;
case PICT_x8r8g8b8:
snprintf(format, 20, "XRGB8888");
break;
case PICT_b8g8r8a8:
snprintf(format, 20, "BGRA8888");
break;
case PICT_b8g8r8x8:
snprintf(format, 20, "BGRX8888");
break;
case PICT_r5g6b5:
snprintf(format, 20, "RGB565 ");
break;
case PICT_x1r5g5b5:
snprintf(format, 20, "RGB555 ");
break;
case PICT_a8:
snprintf(format, 20, "A8 ");
break;
case PICT_a1:
snprintf(format, 20, "A1 ");
break;
default:
snprintf(format, 20, "0x%x", (int) pict->format);
break;
}
if (pict->pDrawable) {
loc = exaGetOffscreenPixmap(pict->pDrawable, &temp, &temp) ? 's' : 'm';
snprintf(size, 20, "%dx%d%s", pict->pDrawable->width,
pict->pDrawable->height, pict->repeat ? " R" : "");
}
else {
loc = '-';
snprintf(size, 20, "%s", pict->repeat ? " R" : "");
}
snprintf(string, n, "%p:%c fmt %s (%s)", pict->pDrawable, loc, format,
size);
}
static void
exaPrintCompositeFallback(CARD8 op,
PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst)
{
char sop[20];
char srcdesc[40], maskdesc[40], dstdesc[40];
switch (op) {
case PictOpSrc:
snprintf(sop, sizeof(sop), "Src");
break;
case PictOpOver:
snprintf(sop, sizeof(sop), "Over");
break;
default:
snprintf(sop, sizeof(sop), "0x%x", (int) op);
break;
}
exaCompositeFallbackPictDesc(pSrc, srcdesc, 40);
exaCompositeFallbackPictDesc(pMask, maskdesc, 40);
exaCompositeFallbackPictDesc(pDst, dstdesc, 40);
ErrorF("Composite fallback: op %s, \n"
" src %s, \n"
" mask %s, \n"
" dst %s, \n", sop, srcdesc, maskdesc, dstdesc);
}
#endif /* DEBUG_TRACE_FALL */
Bool
exaOpReadsDestination(CARD8 op)
{
/* FALSE (does not read destination) is the list of ops in the protocol
* document with "0" in the "Fb" column and no "Ab" in the "Fa" column.
* That's just Clear and Src. ReduceCompositeOp() will already have
* converted con/disjoint clear/src to Clear or Src.
*/
switch (op) {
case PictOpClear:
case PictOpSrc:
return FALSE;
default:
return TRUE;
}
}
static Bool
exaGetPixelFromRGBA(CARD32 *pixel,
CARD16 red,
CARD16 green,
CARD16 blue, CARD16 alpha, PictFormatPtr pFormat)
{
int rbits, bbits, gbits, abits;
int rshift, bshift, gshift, ashift;
*pixel = 0;
if (!PICT_FORMAT_COLOR(pFormat->format) &&
PICT_FORMAT_TYPE(pFormat->format) != PICT_TYPE_A)
return FALSE;
rbits = PICT_FORMAT_R(pFormat->format);
gbits = PICT_FORMAT_G(pFormat->format);
bbits = PICT_FORMAT_B(pFormat->format);
abits = PICT_FORMAT_A(pFormat->format);
rshift = pFormat->direct.red;
gshift = pFormat->direct.green;
bshift = pFormat->direct.blue;
ashift = pFormat->direct.alpha;
*pixel |= (blue >> (16 - bbits)) << bshift;
*pixel |= (red >> (16 - rbits)) << rshift;
*pixel |= (green >> (16 - gbits)) << gshift;
*pixel |= (alpha >> (16 - abits)) << ashift;
return TRUE;
}
static Bool
exaGetRGBAFromPixel(CARD32 pixel,
CARD16 *red,
CARD16 *green,
CARD16 *blue,
CARD16 *alpha,
PictFormatPtr pFormat, PictFormatShort format)
{
int rbits, bbits, gbits, abits;
int rshift, bshift, gshift, ashift;
if (!PICT_FORMAT_COLOR(format) && PICT_FORMAT_TYPE(format) != PICT_TYPE_A)
return FALSE;
rbits = PICT_FORMAT_R(format);
gbits = PICT_FORMAT_G(format);
bbits = PICT_FORMAT_B(format);
abits = PICT_FORMAT_A(format);
if (pFormat) {
rshift = pFormat->direct.red;
gshift = pFormat->direct.green;
bshift = pFormat->direct.blue;
ashift = pFormat->direct.alpha;
}
else if (format == PICT_a8r8g8b8) {
rshift = 16;
gshift = 8;
bshift = 0;
ashift = 24;
}
else
FatalError("EXA bug: exaGetRGBAFromPixel() doesn't match "
"createSourcePicture()\n");
if (rbits) {
*red = ((pixel >> rshift) & ((1 << rbits) - 1)) << (16 - rbits);
while (rbits < 16) {
*red |= *red >> rbits;
rbits <<= 1;
}
*green = ((pixel >> gshift) & ((1 << gbits) - 1)) << (16 - gbits);
while (gbits < 16) {
*green |= *green >> gbits;
gbits <<= 1;
}
*blue = ((pixel >> bshift) & ((1 << bbits) - 1)) << (16 - bbits);
while (bbits < 16) {
*blue |= *blue >> bbits;
bbits <<= 1;
}
}
else {
*red = 0x0000;
*green = 0x0000;
*blue = 0x0000;
}
if (abits) {
*alpha = ((pixel >> ashift) & ((1 << abits) - 1)) << (16 - abits);
while (abits < 16) {
*alpha |= *alpha >> abits;
abits <<= 1;
}
}
else
*alpha = 0xffff;
return TRUE;
}
static int
exaTryDriverSolidFill(PicturePtr pSrc,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xDst, INT16 yDst, CARD16 width, CARD16 height)
{
ExaScreenPriv(pDst->pDrawable->pScreen);
RegionRec region;
BoxPtr pbox;
int nbox;
int dst_off_x, dst_off_y;
PixmapPtr pSrcPix, pDstPix;
ExaPixmapPrivPtr pDstExaPix;
CARD32 pixel;
CARD16 red, green, blue, alpha;
pDstPix = exaGetDrawablePixmap(pDst->pDrawable);
pDstExaPix = ExaGetPixmapPriv(pDstPix);
/* Check whether the accelerator can use the destination pixmap.
*/
if (pDstExaPix->accel_blocked) {
return -1;
}
xDst += pDst->pDrawable->x;
yDst += pDst->pDrawable->y;
if (pSrc->pDrawable) {
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
}
if (!miComputeCompositeRegion(&region, pSrc, NULL, pDst,
xSrc, ySrc, 0, 0, xDst, yDst, width, height))
return 1;
exaGetDrawableDeltas(pDst->pDrawable, pDstPix, &dst_off_x, &dst_off_y);
RegionTranslate(&region, dst_off_x, dst_off_y);
if (pSrc->pDrawable) {
pSrcPix = exaGetDrawablePixmap(pSrc->pDrawable);
pixel = exaGetPixmapFirstPixel(pSrcPix);
}
else
pixel = pSrc->pSourcePict->solidFill.color;
if (!exaGetRGBAFromPixel(pixel, &red, &green, &blue, &alpha,
pSrc->pFormat, pSrc->format) ||
!exaGetPixelFromRGBA(&pixel, red, green, blue, alpha, pDst->pFormat)) {
RegionUninit(&region);
return -1;
}
if (pExaScr->do_migration) {
ExaMigrationRec pixmaps[1];
pixmaps[0].as_dst = TRUE;
pixmaps[0].as_src = FALSE;
pixmaps[0].pPix = pDstPix;
pixmaps[0].pReg = &region;
exaDoMigration(pixmaps, 1, TRUE);
}
if (!exaPixmapHasGpuCopy(pDstPix)) {
RegionUninit(&region);
return 0;
}
if (!(*pExaScr->info->PrepareSolid) (pDstPix, GXcopy, 0xffffffff, pixel)) {
RegionUninit(&region);
return -1;
}
nbox = RegionNumRects(&region);
pbox = RegionRects(&region);
while (nbox--) {
(*pExaScr->info->Solid) (pDstPix, pbox->x1, pbox->y1, pbox->x2,
pbox->y2);
pbox++;
}
(*pExaScr->info->DoneSolid) (pDstPix);
exaMarkSync(pDst->pDrawable->pScreen);
RegionUninit(&region);
return 1;
}
static int
exaTryDriverCompositeRects(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
int nrect, ExaCompositeRectPtr rects)
{
ExaScreenPriv(pDst->pDrawable->pScreen);
int src_off_x = 0, src_off_y = 0, mask_off_x = 0, mask_off_y = 0;
int dst_off_x, dst_off_y;
PixmapPtr pSrcPix = NULL, pMaskPix = NULL, pDstPix;
ExaPixmapPrivPtr pSrcExaPix = NULL, pMaskExaPix = NULL, pDstExaPix;
if (!pExaScr->info->PrepareComposite)
return -1;
if (pSrc->pDrawable) {
pSrcPix = exaGetDrawablePixmap(pSrc->pDrawable);
pSrcExaPix = ExaGetPixmapPriv(pSrcPix);
}
if (pMask && pMask->pDrawable) {
pMaskPix = exaGetDrawablePixmap(pMask->pDrawable);
pMaskExaPix = ExaGetPixmapPriv(pMaskPix);
}
pDstPix = exaGetDrawablePixmap(pDst->pDrawable);
pDstExaPix = ExaGetPixmapPriv(pDstPix);
/* Check whether the accelerator can use these pixmaps.
* FIXME: If it cannot, use temporary pixmaps so that the drawing
* happens within limits.
*/
if (pDstExaPix->accel_blocked ||
(pSrcExaPix && pSrcExaPix->accel_blocked) ||
(pMaskExaPix && pMaskExaPix->accel_blocked)) {
return -1;
}
if (pExaScr->info->CheckComposite &&
!(*pExaScr->info->CheckComposite) (op, pSrc, pMask, pDst)) {
return -1;
}
if (pExaScr->do_migration) {
ExaMigrationRec pixmaps[3];
int i = 0;
pixmaps[i].as_dst = TRUE;
pixmaps[i].as_src = exaOpReadsDestination(op);
pixmaps[i].pPix = pDstPix;
pixmaps[i].pReg = NULL;
i++;
if (pSrcPix) {
pixmaps[i].as_dst = FALSE;
pixmaps[i].as_src = TRUE;
pixmaps[i].pPix = pSrcPix;
pixmaps[i].pReg = NULL;
i++;
}
if (pMaskPix) {
pixmaps[i].as_dst = FALSE;
pixmaps[i].as_src = TRUE;
pixmaps[i].pPix = pMaskPix;
pixmaps[i].pReg = NULL;
i++;
}
exaDoMigration(pixmaps, i, TRUE);
}
pDstPix = exaGetOffscreenPixmap(pDst->pDrawable, &dst_off_x, &dst_off_y);
if (!pDstPix)
return 0;
if (pSrcPix) {
pSrcPix =
exaGetOffscreenPixmap(pSrc->pDrawable, &src_off_x, &src_off_y);
if (!pSrcPix)
return 0;
}
if (pMaskPix) {
pMaskPix =
exaGetOffscreenPixmap(pMask->pDrawable, &mask_off_x, &mask_off_y);
if (!pMaskPix)
return 0;
}
if (!(*pExaScr->info->PrepareComposite) (op, pSrc, pMask, pDst, pSrcPix,
pMaskPix, pDstPix))
return -1;
while (nrect--) {
INT16 xDst = rects->xDst + pDst->pDrawable->x;
INT16 yDst = rects->yDst + pDst->pDrawable->y;
INT16 xMask = rects->xMask;
INT16 yMask = rects->yMask;
INT16 xSrc = rects->xSrc;
INT16 ySrc = rects->ySrc;
RegionRec region;
BoxPtr pbox;
int nbox;
if (pMaskPix) {
xMask += pMask->pDrawable->x;
yMask += pMask->pDrawable->y;
}
if (pSrcPix) {
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
}
if (!miComputeCompositeRegion(&region, pSrc, pMask, pDst,
xSrc, ySrc, xMask, yMask, xDst, yDst,
rects->width, rects->height))
goto next_rect;
RegionTranslate(&region, dst_off_x, dst_off_y);
nbox = RegionNumRects(&region);
pbox = RegionRects(&region);
xMask = xMask + mask_off_x - xDst - dst_off_x;
yMask = yMask + mask_off_y - yDst - dst_off_y;
xSrc = xSrc + src_off_x - xDst - dst_off_x;
ySrc = ySrc + src_off_y - yDst - dst_off_y;
while (nbox--) {
(*pExaScr->info->Composite) (pDstPix,
pbox->x1 + xSrc,
pbox->y1 + ySrc,
pbox->x1 + xMask,
pbox->y1 + yMask,
pbox->x1,
pbox->y1,
pbox->x2 - pbox->x1,
pbox->y2 - pbox->y1);
pbox++;
}
next_rect:
RegionUninit(&region);
rects++;
}
(*pExaScr->info->DoneComposite) (pDstPix);
exaMarkSync(pDst->pDrawable->pScreen);
return 1;
}
/**
* Copy a number of rectangles from source to destination in a single
* operation. This is specialized for glyph rendering: we don't have the
* special-case fallbacks found in exaComposite() - if the driver can support
* it, we use the driver functionality, otherwise we fall back straight to
* software.
*/
void
exaCompositeRects(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst, int nrect, ExaCompositeRectPtr rects)
{
ExaScreenPriv(pDst->pDrawable->pScreen);
int n;
ExaCompositeRectPtr r;
int ret;
/* If we get a mask, that means we're rendering to the exaGlyphs
* destination directly, so the damage layer takes care of this.
*/
if (!pMask) {
RegionRec region;
int x1 = MAXSHORT;
int y1 = MAXSHORT;
int x2 = MINSHORT;
int y2 = MINSHORT;
BoxRec box;
/* We have to manage the damage ourselves, since CompositeRects isn't
* something in the screen that can be managed by the damage extension,
* and EXA depends on damage to track what needs to be migrated between
* the gpu and the cpu.
*/
/* Compute the overall extents of the composited region - we're making
* the assumption here that we are compositing a bunch of glyphs that
* cluster closely together and damaging each glyph individually would
* be a loss compared to damaging the bounding box.
*/
n = nrect;
r = rects;
while (n--) {
int rect_x2 = r->xDst + r->width;
int rect_y2 = r->yDst + r->height;
if (r->xDst < x1)
x1 = r->xDst;
if (r->yDst < y1)
y1 = r->yDst;
if (rect_x2 > x2)
x2 = rect_x2;
if (rect_y2 > y2)
y2 = rect_y2;
r++;
}
if (x2 <= x1 || y2 <= y1)
return;
box.x1 = x1;
box.x2 = x2 < MAXSHORT ? x2 : MAXSHORT;
box.y1 = y1;
box.y2 = y2 < MAXSHORT ? y2 : MAXSHORT;
/* The pixmap migration code relies on pendingDamage indicating
* the bounds of the current rendering, so we need to force
* the actual damage into that region before we do anything, and
* (see use of DamagePendingRegion in exaCopyDirty)
*/
RegionInit(&region, &box, 1);
DamageRegionAppend(pDst->pDrawable, &region);
RegionUninit(&region);
}
/************************************************************/
ValidatePicture(pSrc);
if (pMask)
ValidatePicture(pMask);
ValidatePicture(pDst);
ret = exaTryDriverCompositeRects(op, pSrc, pMask, pDst, nrect, rects);
if (ret != 1) {
if (ret == -1 && op == PictOpOver && pMask && pMask->componentAlpha &&
(!pExaScr->info->CheckComposite ||
((*pExaScr->info->CheckComposite) (PictOpOutReverse, pSrc, pMask,
pDst) &&
(*pExaScr->info->CheckComposite) (PictOpAdd, pSrc, pMask,
pDst)))) {
ret =
exaTryDriverCompositeRects(PictOpOutReverse, pSrc, pMask, pDst,
nrect, rects);
if (ret == 1) {
op = PictOpAdd;
ret = exaTryDriverCompositeRects(op, pSrc, pMask, pDst, nrect,
rects);
}
}
if (ret != 1) {
n = nrect;
r = rects;
while (n--) {
ExaCheckComposite(op, pSrc, pMask, pDst,
r->xSrc, r->ySrc,
r->xMask, r->yMask,
r->xDst, r->yDst, r->width, r->height);
r++;
}
}
}
/************************************************************/
if (!pMask) {
/* Now we have to flush the damage out from pendingDamage => damage
* Calling DamageRegionProcessPending has that effect.
*/
DamageRegionProcessPending(pDst->pDrawable);
}
}
static int
exaTryDriverComposite(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xMask,
INT16 yMask,
INT16 xDst, INT16 yDst, CARD16 width, CARD16 height)
{
ExaScreenPriv(pDst->pDrawable->pScreen);
RegionRec region;
BoxPtr pbox;
int nbox;
int src_off_x, src_off_y, mask_off_x, mask_off_y, dst_off_x, dst_off_y;
PixmapPtr pSrcPix = NULL, pMaskPix = NULL, pDstPix;
ExaPixmapPrivPtr pSrcExaPix = NULL, pMaskExaPix = NULL, pDstExaPix;
if (pSrc->pDrawable) {
pSrcPix = exaGetDrawablePixmap(pSrc->pDrawable);
pSrcExaPix = ExaGetPixmapPriv(pSrcPix);
}
pDstPix = exaGetDrawablePixmap(pDst->pDrawable);
pDstExaPix = ExaGetPixmapPriv(pDstPix);
if (pMask && pMask->pDrawable) {
pMaskPix = exaGetDrawablePixmap(pMask->pDrawable);
pMaskExaPix = ExaGetPixmapPriv(pMaskPix);
}
/* Check whether the accelerator can use these pixmaps.
* FIXME: If it cannot, use temporary pixmaps so that the drawing
* happens within limits.
*/
if (pDstExaPix->accel_blocked ||
(pSrcExaPix && pSrcExaPix->accel_blocked) ||
(pMaskExaPix && (pMaskExaPix->accel_blocked))) {
return -1;
}
xDst += pDst->pDrawable->x;
yDst += pDst->pDrawable->y;
if (pMaskPix) {
xMask += pMask->pDrawable->x;
yMask += pMask->pDrawable->y;
}
if (pSrcPix) {
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
}
if (pExaScr->info->CheckComposite &&
!(*pExaScr->info->CheckComposite) (op, pSrc, pMask, pDst)) {
return -1;
}
if (!miComputeCompositeRegion(&region, pSrc, pMask, pDst,
xSrc, ySrc, xMask, yMask, xDst, yDst,
width, height))
return 1;
exaGetDrawableDeltas(pDst->pDrawable, pDstPix, &dst_off_x, &dst_off_y);
RegionTranslate(&region, dst_off_x, dst_off_y);
if (pExaScr->do_migration) {
ExaMigrationRec pixmaps[3];
int i = 0;
pixmaps[i].as_dst = TRUE;
pixmaps[i].as_src = exaOpReadsDestination(op);
pixmaps[i].pPix = pDstPix;
pixmaps[i].pReg = pixmaps[0].as_src ? NULL : &region;
i++;
if (pSrcPix) {
pixmaps[i].as_dst = FALSE;
pixmaps[i].as_src = TRUE;
pixmaps[i].pPix = pSrcPix;
pixmaps[i].pReg = NULL;
i++;
}
if (pMaskPix) {
pixmaps[i].as_dst = FALSE;
pixmaps[i].as_src = TRUE;
pixmaps[i].pPix = pMaskPix;
pixmaps[i].pReg = NULL;
i++;
}
exaDoMigration(pixmaps, i, TRUE);
}
if (pSrcPix) {
pSrcPix =
exaGetOffscreenPixmap(pSrc->pDrawable, &src_off_x, &src_off_y);
if (!pSrcPix) {
RegionUninit(&region);
return 0;
}
}
if (pMaskPix) {
pMaskPix = exaGetOffscreenPixmap(pMask->pDrawable, &mask_off_x,
&mask_off_y);
if (!pMaskPix) {
RegionUninit(&region);
return 0;
}
}
if (!exaPixmapHasGpuCopy(pDstPix)) {
RegionUninit(&region);
return 0;
}
if (!(*pExaScr->info->PrepareComposite) (op, pSrc, pMask, pDst, pSrcPix,
pMaskPix, pDstPix)) {
RegionUninit(&region);
return -1;
}
nbox = RegionNumRects(&region);
pbox = RegionRects(&region);
xMask = xMask + mask_off_x - xDst - dst_off_x;
yMask = yMask + mask_off_y - yDst - dst_off_y;
xSrc = xSrc + src_off_x - xDst - dst_off_x;
ySrc = ySrc + src_off_y - yDst - dst_off_y;
while (nbox--) {
(*pExaScr->info->Composite) (pDstPix,
pbox->x1 + xSrc,
pbox->y1 + ySrc,
pbox->x1 + xMask,
pbox->y1 + yMask,
pbox->x1,
pbox->y1,
pbox->x2 - pbox->x1, pbox->y2 - pbox->y1);
pbox++;
}
(*pExaScr->info->DoneComposite) (pDstPix);
exaMarkSync(pDst->pDrawable->pScreen);
RegionUninit(&region);
return 1;
}
/**
* exaTryMagicTwoPassCompositeHelper implements PictOpOver using two passes of
* simpler operations PictOpOutReverse and PictOpAdd. Mainly used for component
* alpha and limited 1-tmu cards.
*
* From http://anholt.livejournal.com/32058.html:
*
* The trouble is that component-alpha rendering requires two different sources
* for blending: one for the source value to the blender, which is the
* per-channel multiplication of source and mask, and one for the source alpha
* for multiplying with the destination channels, which is the multiplication
* of the source channels by the mask alpha. So the equation for Over is:
*
* dst.A = src.A * mask.A + (1 - (src.A * mask.A)) * dst.A
* dst.R = src.R * mask.R + (1 - (src.A * mask.R)) * dst.R
* dst.G = src.G * mask.G + (1 - (src.A * mask.G)) * dst.G
* dst.B = src.B * mask.B + (1 - (src.A * mask.B)) * dst.B
*
* But we can do some simpler operations, right? How about PictOpOutReverse,
* which has a source factor of 0 and dest factor of (1 - source alpha). We
* can get the source alpha value (srca.X = src.A * mask.X) out of the texture
* blenders pretty easily. So we can do a component-alpha OutReverse, which
* gets us:
*
* dst.A = 0 + (1 - (src.A * mask.A)) * dst.A
* dst.R = 0 + (1 - (src.A * mask.R)) * dst.R
* dst.G = 0 + (1 - (src.A * mask.G)) * dst.G
* dst.B = 0 + (1 - (src.A * mask.B)) * dst.B
*
* OK. And if an op doesn't use the source alpha value for the destination
* factor, then we can do the channel multiplication in the texture blenders
* to get the source value, and ignore the source alpha that we wouldn't use.
* We've supported this in the Radeon driver for a long time. An example would
* be PictOpAdd, which does:
*
* dst.A = src.A * mask.A + dst.A
* dst.R = src.R * mask.R + dst.R
* dst.G = src.G * mask.G + dst.G
* dst.B = src.B * mask.B + dst.B
*
* Hey, this looks good! If we do a PictOpOutReverse and then a PictOpAdd right
* after it, we get:
*
* dst.A = src.A * mask.A + ((1 - (src.A * mask.A)) * dst.A)
* dst.R = src.R * mask.R + ((1 - (src.A * mask.R)) * dst.R)
* dst.G = src.G * mask.G + ((1 - (src.A * mask.G)) * dst.G)
* dst.B = src.B * mask.B + ((1 - (src.A * mask.B)) * dst.B)
*/
static int
exaTryMagicTwoPassCompositeHelper(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xMask,
INT16 yMask,
INT16 xDst,
INT16 yDst, CARD16 width, CARD16 height)
{
ExaScreenPriv(pDst->pDrawable->pScreen);
assert(op == PictOpOver);
if (pExaScr->info->CheckComposite &&
(!(*pExaScr->info->CheckComposite) (PictOpOutReverse, pSrc, pMask,
pDst) ||
!(*pExaScr->info->CheckComposite) (PictOpAdd, pSrc, pMask, pDst))) {
return -1;
}
/* Now, we think we should be able to accelerate this operation. First,
* composite the destination to be the destination times the source alpha
* factors.
*/
exaComposite(PictOpOutReverse, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask,
xDst, yDst, width, height);
/* Then, add in the source value times the destination alpha factors (1.0).
*/
exaComposite(PictOpAdd, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask,
xDst, yDst, width, height);
return 1;
}
void
exaComposite(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xMask,
INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height)
{
ExaScreenPriv(pDst->pDrawable->pScreen);
int ret = -1;
Bool saveSrcRepeat = pSrc->repeat;
Bool saveMaskRepeat = pMask ? pMask->repeat : 0;
RegionRec region;
if (pExaScr->swappedOut)
goto fallback;
/* Remove repeat in source if useless */
if (pSrc->pDrawable && pSrc->repeat && !pSrc->transform && xSrc >= 0 &&
(xSrc + width) <= pSrc->pDrawable->width && ySrc >= 0 &&
(ySrc + height) <= pSrc->pDrawable->height)
pSrc->repeat = 0;
if (!pMask && !pSrc->alphaMap && !pDst->alphaMap &&
(op == PictOpSrc || (op == PictOpOver && !PICT_FORMAT_A(pSrc->format))))
{
if (pSrc->pDrawable ?
(pSrc->pDrawable->width == 1 && pSrc->pDrawable->height == 1 &&
pSrc->repeat) :
(pSrc->pSourcePict->type == SourcePictTypeSolidFill)) {
ret = exaTryDriverSolidFill(pSrc, pDst, xSrc, ySrc, xDst, yDst,
width, height);
if (ret == 1)
goto done;
}
else if (pSrc->pDrawable && !pSrc->transform &&
((op == PictOpSrc &&
(pSrc->format == pDst->format ||
(PICT_FORMAT_COLOR(pDst->format) &&
PICT_FORMAT_COLOR(pSrc->format) &&
pDst->format == PICT_FORMAT(PICT_FORMAT_BPP(pSrc->format),
PICT_FORMAT_TYPE(pSrc->format),
0,
PICT_FORMAT_R(pSrc->format),
PICT_FORMAT_G(pSrc->format),
PICT_FORMAT_B(pSrc->format)))))
|| (op == PictOpOver && pSrc->format == pDst->format &&
!PICT_FORMAT_A(pSrc->format)))) {
if (!pSrc->repeat && xSrc >= 0 && ySrc >= 0 &&
(xSrc + width <= pSrc->pDrawable->width) &&
(ySrc + height <= pSrc->pDrawable->height)) {
Bool ret;
xDst += pDst->pDrawable->x;
yDst += pDst->pDrawable->y;
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
if (!miComputeCompositeRegion(&region, pSrc, pMask, pDst,
xSrc, ySrc, xMask, yMask, xDst,
yDst, width, height))
goto done;
ret = exaHWCopyNtoN(pSrc->pDrawable, pDst->pDrawable, NULL,
RegionRects(&region),
RegionNumRects(&region), xSrc - xDst,
ySrc - yDst, FALSE, FALSE);
RegionUninit(&region);
/* Reset values to their original values. */
xDst -= pDst->pDrawable->x;
yDst -= pDst->pDrawable->y;
xSrc -= pSrc->pDrawable->x;
ySrc -= pSrc->pDrawable->y;
if (!ret)
goto fallback;
goto done;
}
if (pSrc->repeat && pSrc->repeatType == RepeatNormal &&
pSrc->pDrawable->type == DRAWABLE_PIXMAP) {
DDXPointRec patOrg;
/* Let's see if the driver can do the repeat in one go */
if (pExaScr->info->PrepareComposite && !pSrc->alphaMap &&
!pDst->alphaMap) {
ret = exaTryDriverComposite(op, pSrc, pMask, pDst, xSrc,
ySrc, xMask, yMask, xDst, yDst,
width, height);
if (ret == 1)
goto done;
}
/* Now see if we can use exaFillRegionTiled() */
xDst += pDst->pDrawable->x;
yDst += pDst->pDrawable->y;
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
if (!miComputeCompositeRegion(&region, pSrc, pMask, pDst, xSrc,
ySrc, xMask, yMask, xDst, yDst,
width, height))
goto done;
/* pattern origin is the point in the destination drawable
* corresponding to (0,0) in the source */
patOrg.x = xDst - xSrc;
patOrg.y = yDst - ySrc;
ret = exaFillRegionTiled(pDst->pDrawable, &region,
(PixmapPtr) pSrc->pDrawable,
&patOrg, FB_ALLONES, GXcopy, CT_NONE);
RegionUninit(&region);
if (ret)
goto done;
/* Let's be correct and restore the variables to their original state. */
xDst -= pDst->pDrawable->x;
yDst -= pDst->pDrawable->y;
xSrc -= pSrc->pDrawable->x;
ySrc -= pSrc->pDrawable->y;
}
}
}
/* Remove repeat in mask if useless */
if (pMask && pMask->pDrawable && pMask->repeat && !pMask->transform &&
xMask >= 0 && (xMask + width) <= pMask->pDrawable->width &&
yMask >= 0 && (yMask + height) <= pMask->pDrawable->height)
pMask->repeat = 0;
if (pExaScr->info->PrepareComposite &&
!pSrc->alphaMap && (!pMask || !pMask->alphaMap) && !pDst->alphaMap) {
Bool isSrcSolid;
ret = exaTryDriverComposite(op, pSrc, pMask, pDst, xSrc, ySrc, xMask,
yMask, xDst, yDst, width, height);
if (ret == 1)
goto done;
/* For generic masks and solid src pictures, mach64 can do Over in two
* passes, similar to the component-alpha case.
*/
isSrcSolid = pSrc->pDrawable ?
(pSrc->pDrawable->width == 1 && pSrc->pDrawable->height == 1 &&
pSrc->repeat) :
(pSrc->pSourcePict->type == SourcePictTypeSolidFill);
/* If we couldn't do the Composite in a single pass, and it was a
* component-alpha Over, see if we can do it in two passes with
* an OutReverse and then an Add.
*/
if (ret == -1 && op == PictOpOver && pMask &&
(pMask->componentAlpha || isSrcSolid)) {
ret = exaTryMagicTwoPassCompositeHelper(op, pSrc, pMask, pDst,
xSrc, ySrc,
xMask, yMask, xDst, yDst,
width, height);
if (ret == 1)
goto done;
}
}
fallback:
#if DEBUG_TRACE_FALL
exaPrintCompositeFallback(op, pSrc, pMask, pDst);
#endif
ExaCheckComposite(op, pSrc, pMask, pDst, xSrc, ySrc,
xMask, yMask, xDst, yDst, width, height);
done:
pSrc->repeat = saveSrcRepeat;
if (pMask)
pMask->repeat = saveMaskRepeat;
}
/**
* Same as miCreateAlphaPicture, except it uses ExaCheckPolyFillRect instead
* of PolyFillRect to initialize the pixmap after creating it, to prevent
* the pixmap from being migrated.
*
* See the comments about exaTrapezoids and exaTriangles.
*/
static PicturePtr
exaCreateAlphaPicture(ScreenPtr pScreen,
PicturePtr pDst,
PictFormatPtr pPictFormat, CARD16 width, CARD16 height)
{
PixmapPtr pPixmap;
PicturePtr pPicture;
GCPtr pGC;
int error;
xRectangle rect;
if (width > 32767 || height > 32767)
return 0;
if (!pPictFormat) {
if (pDst->polyEdge == PolyEdgeSharp)
pPictFormat = PictureMatchFormat(pScreen, 1, PICT_a1);
else
pPictFormat = PictureMatchFormat(pScreen, 8, PICT_a8);
if (!pPictFormat)
return 0;
}
pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
pPictFormat->depth, 0);
if (!pPixmap)
return 0;
pGC = GetScratchGC(pPixmap->drawable.depth, pScreen);
if (!pGC) {
(*pScreen->DestroyPixmap) (pPixmap);
return 0;
}
ValidateGC(&pPixmap->drawable, pGC);
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height = height;
ExaCheckPolyFillRect(&pPixmap->drawable, pGC, 1, &rect);
exaPixmapDirty(pPixmap, 0, 0, width, height);
FreeScratchGC(pGC);
pPicture = CreatePicture(0, &pPixmap->drawable, pPictFormat,
0, 0, serverClient, &error);
(*pScreen->DestroyPixmap) (pPixmap);
return pPicture;
}
/**
* exaTrapezoids is essentially a copy of miTrapezoids that uses
* exaCreateAlphaPicture instead of miCreateAlphaPicture.
*
* The problem with miCreateAlphaPicture is that it calls PolyFillRect
* to initialize the contents after creating the pixmap, which
* causes the pixmap to be moved in for acceleration. The subsequent
* call to RasterizeTrapezoid won't be accelerated however, which
* forces the pixmap to be moved out again.
*
* exaCreateAlphaPicture avoids this roundtrip by using ExaCheckPolyFillRect
* to initialize the contents.
*/
void
exaTrapezoids(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
int ntrap, xTrapezoid * traps)
{
ScreenPtr pScreen = pDst->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
BoxRec bounds;
if (maskFormat) {
PicturePtr pPicture;
INT16 xDst, yDst;
INT16 xRel, yRel;
miTrapezoidBounds(ntrap, traps, &bounds);
if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
return;
xDst = traps[0].left.p1.x >> 16;
yDst = traps[0].left.p1.y >> 16;
pPicture = exaCreateAlphaPicture(pScreen, pDst, maskFormat,
bounds.x2 - bounds.x1,
bounds.y2 - bounds.y1);
if (!pPicture)
return;
exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
for (; ntrap; ntrap--, traps++)
(*ps->RasterizeTrapezoid) (pPicture, traps, -bounds.x1, -bounds.y1);
exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
xRel = bounds.x1 + xSrc - xDst;
yRel = bounds.y1 + ySrc - yDst;
CompositePicture(op, pSrc, pPicture, pDst,
xRel, yRel, 0, 0, bounds.x1, bounds.y1,
bounds.x2 - bounds.x1, bounds.y2 - bounds.y1);
FreePicture(pPicture, 0);
}
else {
if (pDst->polyEdge == PolyEdgeSharp)
maskFormat = PictureMatchFormat(pScreen, 1, PICT_a1);
else
maskFormat = PictureMatchFormat(pScreen, 8, PICT_a8);
for (; ntrap; ntrap--, traps++)
exaTrapezoids(op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, traps);
}
}
/**
* exaTriangles is essentially a copy of miTriangles that uses
* exaCreateAlphaPicture instead of miCreateAlphaPicture.
*
* The problem with miCreateAlphaPicture is that it calls PolyFillRect
* to initialize the contents after creating the pixmap, which
* causes the pixmap to be moved in for acceleration. The subsequent
* call to AddTriangles won't be accelerated however, which forces the pixmap
* to be moved out again.
*
* exaCreateAlphaPicture avoids this roundtrip by using ExaCheckPolyFillRect
* to initialize the contents.
*/
void
exaTriangles(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
int ntri, xTriangle * tris)
{
ScreenPtr pScreen = pDst->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
BoxRec bounds;
if (maskFormat) {
PicturePtr pPicture;
INT16 xDst, yDst;
INT16 xRel, yRel;
miTriangleBounds(ntri, tris, &bounds);
if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
return;
xDst = tris[0].p1.x >> 16;
yDst = tris[0].p1.y >> 16;
pPicture = exaCreateAlphaPicture(pScreen, pDst, maskFormat,
bounds.x2 - bounds.x1,
bounds.y2 - bounds.y1);
if (!pPicture)
return;
exaPrepareAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
(*ps->AddTriangles) (pPicture, -bounds.x1, -bounds.y1, ntri, tris);
exaFinishAccess(pPicture->pDrawable, EXA_PREPARE_DEST);
xRel = bounds.x1 + xSrc - xDst;
yRel = bounds.y1 + ySrc - yDst;
CompositePicture(op, pSrc, pPicture, pDst,
xRel, yRel, 0, 0, bounds.x1, bounds.y1,
bounds.x2 - bounds.x1, bounds.y2 - bounds.y1);
FreePicture(pPicture, 0);
}
else {
if (pDst->polyEdge == PolyEdgeSharp)
maskFormat = PictureMatchFormat(pScreen, 1, PICT_a1);
else
maskFormat = PictureMatchFormat(pScreen, 8, PICT_a8);
for (; ntri; ntri--, tris++)
exaTriangles(op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, tris);
}
}
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