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65aa33f917
xserver-multidpi/render/picture.c
Lars Knoll 65aa33f917 render/picture.c Initialize the format of a source picture to 
PICT_a8r8g8b8. Fixes a failure in the gradients test of rendercheck. In
    the long term we could do better by setting the format to something
    without alpha whenever the gradient doesn't contain colors with alpha.
    This triggers a reduction of the over operation to a pure source
    operation.
2006-03-08 06:19:37 +00:00

1973 lines
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/*
* $XFree86: xc/programs/Xserver/render/picture.c,v 1.29 2002/11/23 02:38:15 keithp Exp $
*
* Copyright © 2000 SuSE, 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 SuSE not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. SuSE makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
* 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.
*
* Author: Keith Packard, SuSE, Inc.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "misc.h"
#include "scrnintstr.h"
#include "os.h"
#include "regionstr.h"
#include "validate.h"
#include "windowstr.h"
#include "input.h"
#include "resource.h"
#include "colormapst.h"
#include "cursorstr.h"
#include "dixstruct.h"
#include "gcstruct.h"
#include "servermd.h"
#include "picturestr.h"
_X_EXPORT int PictureScreenPrivateIndex = -1;
int PictureWindowPrivateIndex;
int PictureGeneration;
RESTYPE PictureType;
RESTYPE PictFormatType;
RESTYPE GlyphSetType;
int PictureCmapPolicy = PictureCmapPolicyDefault;
/* Picture Private machinery */
static int picturePrivateCount;
void
ResetPicturePrivateIndex (void)
{
picturePrivateCount = 0;
}
int
AllocatePicturePrivateIndex (void)
{
return picturePrivateCount++;
}
Bool
AllocatePicturePrivate (ScreenPtr pScreen, int index2, unsigned int amount)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
unsigned int oldamount;
/* Round up sizes for proper alignment */
amount = ((amount + (sizeof(long) - 1)) / sizeof(long)) * sizeof(long);
if (index2 >= ps->PicturePrivateLen)
{
unsigned int *nsizes;
nsizes = (unsigned int *)xrealloc(ps->PicturePrivateSizes,
(index2 + 1) * sizeof(unsigned int));
if (!nsizes)
return FALSE;
while (ps->PicturePrivateLen <= index2)
{
nsizes[ps->PicturePrivateLen++] = 0;
ps->totalPictureSize += sizeof(DevUnion);
}
ps->PicturePrivateSizes = nsizes;
}
oldamount = ps->PicturePrivateSizes[index2];
if (amount > oldamount)
{
ps->PicturePrivateSizes[index2] = amount;
ps->totalPictureSize += (amount - oldamount);
}
return TRUE;
}
Bool
PictureDestroyWindow (WindowPtr pWindow)
{
ScreenPtr pScreen = pWindow->drawable.pScreen;
PicturePtr pPicture;
PictureScreenPtr ps = GetPictureScreen(pScreen);
Bool ret;
while ((pPicture = GetPictureWindow(pWindow)))
{
SetPictureWindow(pWindow, pPicture->pNext);
if (pPicture->id)
FreeResource (pPicture->id, PictureType);
FreePicture ((pointer) pPicture, pPicture->id);
}
pScreen->DestroyWindow = ps->DestroyWindow;
ret = (*pScreen->DestroyWindow) (pWindow);
ps->DestroyWindow = pScreen->DestroyWindow;
pScreen->DestroyWindow = PictureDestroyWindow;
return ret;
}
Bool
PictureCloseScreen (int index, ScreenPtr pScreen)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
Bool ret;
int n;
pScreen->CloseScreen = ps->CloseScreen;
ret = (*pScreen->CloseScreen) (index, pScreen);
PictureResetFilters (pScreen);
for (n = 0; n < ps->nformats; n++)
if (ps->formats[n].type == PictTypeIndexed)
(*ps->CloseIndexed) (pScreen, &ps->formats[n]);
GlyphUninit (pScreen);
SetPictureScreen(pScreen, 0);
if (ps->PicturePrivateSizes)
xfree (ps->PicturePrivateSizes);
xfree (ps->formats);
xfree (ps);
return ret;
}
void
PictureStoreColors (ColormapPtr pColormap, int ndef, xColorItem *pdef)
{
ScreenPtr pScreen = pColormap->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
pScreen->StoreColors = ps->StoreColors;
(*pScreen->StoreColors) (pColormap, ndef, pdef);
ps->StoreColors = pScreen->StoreColors;
pScreen->StoreColors = PictureStoreColors;
if (pColormap->class == PseudoColor || pColormap->class == GrayScale)
{
PictFormatPtr format = ps->formats;
int nformats = ps->nformats;
while (nformats--)
{
if (format->type == PictTypeIndexed &&
format->index.pColormap == pColormap)
{
(*ps->UpdateIndexed) (pScreen, format, ndef, pdef);
break;
}
format++;
}
}
}
static int
visualDepth (ScreenPtr pScreen, VisualPtr pVisual)
{
int d, v;
DepthPtr pDepth;
for (d = 0; d < pScreen->numDepths; d++)
{
pDepth = &pScreen->allowedDepths[d];
for (v = 0; v < pDepth->numVids; v++)
if (pDepth->vids[v] == pVisual->vid)
return pDepth->depth;
}
return 0;
}
typedef struct _formatInit {
CARD32 format;
CARD8 depth;
} FormatInitRec, *FormatInitPtr;
static int
addFormat (FormatInitRec formats[256],
int nformat,
CARD32 format,
CARD8 depth)
{
int n;
for (n = 0; n < nformat; n++)
if (formats[n].format == format && formats[n].depth == depth)
return nformat;
formats[nformat].format = format;
formats[nformat].depth = depth;
return ++nformat;
}
#define Mask(n) ((n) == 32 ? 0xffffffff : ((1 << (n))-1))
PictFormatPtr
PictureCreateDefaultFormats (ScreenPtr pScreen, int *nformatp)
{
int nformats, f;
PictFormatPtr pFormats;
FormatInitRec formats[1024];
CARD32 format;
CARD8 depth;
VisualPtr pVisual;
int v;
int bpp;
int type;
int r, g, b;
int d;
DepthPtr pDepth;
nformats = 0;
/* formats required by protocol */
formats[nformats].format = PICT_a1;
formats[nformats].depth = 1;
nformats++;
formats[nformats].format = PICT_a8;
formats[nformats].depth = 8;
nformats++;
formats[nformats].format = PICT_a4;
formats[nformats].depth = 4;
nformats++;
formats[nformats].format = PICT_a8r8g8b8;
formats[nformats].depth = 32;
nformats++;
formats[nformats].format = PICT_x8r8g8b8;
formats[nformats].depth = 32;
nformats++;
/* now look through the depths and visuals adding other formats */
for (v = 0; v < pScreen->numVisuals; v++)
{
pVisual = &pScreen->visuals[v];
depth = visualDepth (pScreen, pVisual);
if (!depth)
continue;
bpp = BitsPerPixel (depth);
switch (pVisual->class) {
case DirectColor:
case TrueColor:
r = Ones (pVisual->redMask);
g = Ones (pVisual->greenMask);
b = Ones (pVisual->blueMask);
type = PICT_TYPE_OTHER;
/*
* Current rendering code supports only two direct formats,
* fields must be packed together at the bottom of the pixel
* and must be either RGB or BGR
*/
if (pVisual->offsetBlue == 0 &&
pVisual->offsetGreen == b &&
pVisual->offsetRed == b + g)
{
type = PICT_TYPE_ARGB;
}
else if (pVisual->offsetRed == 0 &&
pVisual->offsetGreen == r &&
pVisual->offsetBlue == r + g)
{
type = PICT_TYPE_ABGR;
}
if (type != PICT_TYPE_OTHER)
{
format = PICT_FORMAT(bpp, type, 0, r, g, b);
nformats = addFormat (formats, nformats, format, depth);
}
break;
case StaticColor:
case PseudoColor:
format = PICT_VISFORMAT (bpp, PICT_TYPE_COLOR, v);
nformats = addFormat (formats, nformats, format, depth);
break;
case StaticGray:
case GrayScale:
format = PICT_VISFORMAT (bpp, PICT_TYPE_GRAY, v);
nformats = addFormat (formats, nformats, format, depth);
break;
}
}
/*
* Walk supported depths and add useful Direct formats
*/
for (d = 0; d < pScreen->numDepths; d++)
{
pDepth = &pScreen->allowedDepths[d];
bpp = BitsPerPixel (pDepth->depth);
format = 0;
switch (bpp) {
case 16:
/* depth 12 formats */
if (pDepth->depth >= 12)
{
nformats = addFormat (formats, nformats,
PICT_x4r4g4b4, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_x4b4g4r4, pDepth->depth);
}
/* depth 15 formats */
if (pDepth->depth >= 15)
{
nformats = addFormat (formats, nformats,
PICT_x1r5g5b5, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_x1b5g5r5, pDepth->depth);
}
/* depth 16 formats */
if (pDepth->depth >= 16)
{
nformats = addFormat (formats, nformats,
PICT_a1r5g5b5, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_a1b5g5r5, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_r5g6b5, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_b5g6r5, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_a4r4g4b4, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_a4b4g4r4, pDepth->depth);
}
break;
case 24:
if (pDepth->depth >= 24)
{
nformats = addFormat (formats, nformats,
PICT_r8g8b8, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_b8g8r8, pDepth->depth);
}
break;
case 32:
if (pDepth->depth >= 24)
{
nformats = addFormat (formats, nformats,
PICT_x8r8g8b8, pDepth->depth);
nformats = addFormat (formats, nformats,
PICT_x8b8g8r8, pDepth->depth);
}
break;
}
}
pFormats = (PictFormatPtr) xalloc (nformats * sizeof (PictFormatRec));
if (!pFormats)
return 0;
memset (pFormats, '\0', nformats * sizeof (PictFormatRec));
for (f = 0; f < nformats; f++)
{
pFormats[f].id = FakeClientID (0);
pFormats[f].depth = formats[f].depth;
format = formats[f].format;
pFormats[f].format = format;
switch (PICT_FORMAT_TYPE(format)) {
case PICT_TYPE_ARGB:
pFormats[f].type = PictTypeDirect;
pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
if (pFormats[f].direct.alphaMask)
pFormats[f].direct.alpha = (PICT_FORMAT_R(format) +
PICT_FORMAT_G(format) +
PICT_FORMAT_B(format));
pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));
pFormats[f].direct.red = (PICT_FORMAT_G(format) +
PICT_FORMAT_B(format));
pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));
pFormats[f].direct.green = PICT_FORMAT_B(format);
pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));
pFormats[f].direct.blue = 0;
break;
case PICT_TYPE_ABGR:
pFormats[f].type = PictTypeDirect;
pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
if (pFormats[f].direct.alphaMask)
pFormats[f].direct.alpha = (PICT_FORMAT_B(format) +
PICT_FORMAT_G(format) +
PICT_FORMAT_R(format));
pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));
pFormats[f].direct.blue = (PICT_FORMAT_G(format) +
PICT_FORMAT_R(format));
pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));
pFormats[f].direct.green = PICT_FORMAT_R(format);
pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));
pFormats[f].direct.red = 0;
break;
case PICT_TYPE_A:
pFormats[f].type = PictTypeDirect;
pFormats[f].direct.alpha = 0;
pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
/* remaining fields already set to zero */
break;
case PICT_TYPE_COLOR:
case PICT_TYPE_GRAY:
pFormats[f].type = PictTypeIndexed;
pFormats[f].index.vid = pScreen->visuals[PICT_FORMAT_VIS(format)].vid;
break;
}
}
*nformatp = nformats;
return pFormats;
}
static VisualPtr
PictureFindVisual (ScreenPtr pScreen, VisualID visual)
{
int i;
VisualPtr pVisual;
for (i = 0, pVisual = pScreen->visuals;
i < pScreen->numVisuals;
i++, pVisual++)
{
if (pVisual->vid == visual)
return pVisual;
}
return 0;
}
Bool
PictureInitIndexedFormats (ScreenPtr pScreen)
{
PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
PictFormatPtr format;
int nformat;
if (!ps)
return FALSE;
format = ps->formats;
nformat = ps->nformats;
while (nformat--)
{
if (format->type == PictTypeIndexed && !format->index.pColormap)
{
if (format->index.vid == pScreen->rootVisual)
format->index.pColormap = (ColormapPtr) LookupIDByType(pScreen->defColormap,
RT_COLORMAP);
else
{
VisualPtr pVisual;
pVisual = PictureFindVisual (pScreen, format->index.vid);
if (CreateColormap (FakeClientID (0), pScreen,
pVisual,
&format->index.pColormap, AllocNone,
0) != Success)
{
return FALSE;
}
}
if (!(*ps->InitIndexed) (pScreen, format))
return FALSE;
}
format++;
}
return TRUE;
}
Bool
PictureFinishInit (void)
{
int s;
for (s = 0; s < screenInfo.numScreens; s++)
{
if (!GlyphFinishInit (screenInfo.screens[s]))
return FALSE;
if (!PictureInitIndexedFormats (screenInfo.screens[s]))
return FALSE;
(void) AnimCurInit (screenInfo.screens[s]);
}
return TRUE;
}
_X_EXPORT Bool
PictureSetSubpixelOrder (ScreenPtr pScreen, int subpixel)
{
PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
if (!ps)
return FALSE;
ps->subpixel = subpixel;
return TRUE;
}
_X_EXPORT int
PictureGetSubpixelOrder (ScreenPtr pScreen)
{
PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
if (!ps)
return SubPixelUnknown;
return ps->subpixel;
}
PictFormatPtr
PictureMatchVisual (ScreenPtr pScreen, int depth, VisualPtr pVisual)
{
PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
PictFormatPtr format;
int nformat;
int type;
if (!ps)
return 0;
format = ps->formats;
nformat = ps->nformats;
switch (pVisual->class) {
case StaticGray:
case GrayScale:
case StaticColor:
case PseudoColor:
type = PictTypeIndexed;
break;
case TrueColor:
case DirectColor:
type = PictTypeDirect;
break;
default:
return 0;
}
while (nformat--)
{
if (format->depth == depth && format->type == type)
{
if (type == PictTypeIndexed)
{
if (format->index.vid == pVisual->vid)
return format;
}
else
{
if (format->direct.redMask << format->direct.red ==
pVisual->redMask &&
format->direct.greenMask << format->direct.green ==
pVisual->greenMask &&
format->direct.blueMask << format->direct.blue ==
pVisual->blueMask)
{
return format;
}
}
}
format++;
}
return 0;
}
PictFormatPtr
PictureMatchFormat (ScreenPtr pScreen, int depth, CARD32 f)
{
PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
PictFormatPtr format;
int nformat;
if (!ps)
return 0;
format = ps->formats;
nformat = ps->nformats;
while (nformat--)
{
if (format->depth == depth && format->format == (f & 0xffffff))
return format;
format++;
}
return 0;
}
int
PictureParseCmapPolicy (const char *name)
{
if ( strcmp (name, "default" ) == 0)
return PictureCmapPolicyDefault;
else if ( strcmp (name, "mono" ) == 0)
return PictureCmapPolicyMono;
else if ( strcmp (name, "gray" ) == 0)
return PictureCmapPolicyGray;
else if ( strcmp (name, "color" ) == 0)
return PictureCmapPolicyColor;
else if ( strcmp (name, "all" ) == 0)
return PictureCmapPolicyAll;
else
return PictureCmapPolicyInvalid;
}
_X_EXPORT Bool
PictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
{
PictureScreenPtr ps;
int n;
CARD32 type, a, r, g, b;
if (PictureGeneration != serverGeneration)
{
PictureType = CreateNewResourceType (FreePicture);
if (!PictureType)
return FALSE;
PictFormatType = CreateNewResourceType (FreePictFormat);
if (!PictFormatType)
return FALSE;
GlyphSetType = CreateNewResourceType (FreeGlyphSet);
if (!GlyphSetType)
return FALSE;
PictureScreenPrivateIndex = AllocateScreenPrivateIndex();
if (PictureScreenPrivateIndex < 0)
return FALSE;
PictureWindowPrivateIndex = AllocateWindowPrivateIndex();
PictureGeneration = serverGeneration;
#ifdef XResExtension
RegisterResourceName (PictureType, "PICTURE");
RegisterResourceName (PictFormatType, "PICTFORMAT");
RegisterResourceName (GlyphSetType, "GLYPHSET");
#endif
}
if (!AllocateWindowPrivate (pScreen, PictureWindowPrivateIndex, 0))
return FALSE;
if (!formats)
{
formats = PictureCreateDefaultFormats (pScreen, &nformats);
if (!formats)
return FALSE;
}
for (n = 0; n < nformats; n++)
{
if (!AddResource (formats[n].id, PictFormatType, (pointer) (formats+n)))
{
xfree (formats);
return FALSE;
}
if (formats[n].type == PictTypeIndexed)
{
VisualPtr pVisual = PictureFindVisual (pScreen, formats[n].index.vid);
if ((pVisual->class | DynamicClass) == PseudoColor)
type = PICT_TYPE_COLOR;
else
type = PICT_TYPE_GRAY;
a = r = g = b = 0;
}
else
{
if ((formats[n].direct.redMask|
formats[n].direct.blueMask|
formats[n].direct.greenMask) == 0)
type = PICT_TYPE_A;
else if (formats[n].direct.red > formats[n].direct.blue)
type = PICT_TYPE_ARGB;
else
type = PICT_TYPE_ABGR;
a = Ones (formats[n].direct.alphaMask);
r = Ones (formats[n].direct.redMask);
g = Ones (formats[n].direct.greenMask);
b = Ones (formats[n].direct.blueMask);
}
formats[n].format = PICT_FORMAT(0,type,a,r,g,b);
}
ps = (PictureScreenPtr) xalloc (sizeof (PictureScreenRec));
if (!ps)
{
xfree (formats);
return FALSE;
}
SetPictureScreen(pScreen, ps);
if (!GlyphInit (pScreen))
{
SetPictureScreen(pScreen, 0);
xfree (formats);
xfree (ps);
return FALSE;
}
ps->totalPictureSize = sizeof (PictureRec);
ps->PicturePrivateSizes = 0;
ps->PicturePrivateLen = 0;
ps->formats = formats;
ps->fallback = formats;
ps->nformats = nformats;
ps->filters = 0;
ps->nfilters = 0;
ps->filterAliases = 0;
ps->nfilterAliases = 0;
ps->subpixel = SubPixelUnknown;
ps->CloseScreen = pScreen->CloseScreen;
ps->DestroyWindow = pScreen->DestroyWindow;
ps->StoreColors = pScreen->StoreColors;
pScreen->DestroyWindow = PictureDestroyWindow;
pScreen->CloseScreen = PictureCloseScreen;
pScreen->StoreColors = PictureStoreColors;
if (!PictureSetDefaultFilters (pScreen))
{
PictureResetFilters (pScreen);
SetPictureScreen(pScreen, 0);
xfree (formats);
xfree (ps);
return FALSE;
}
return TRUE;
}
void
SetPictureToDefaults (PicturePtr pPicture)
{
pPicture->refcnt = 1;
pPicture->repeat = 0;
pPicture->graphicsExposures = FALSE;
pPicture->subWindowMode = ClipByChildren;
pPicture->polyEdge = PolyEdgeSharp;
pPicture->polyMode = PolyModePrecise;
pPicture->freeCompClip = FALSE;
pPicture->clientClipType = CT_NONE;
pPicture->componentAlpha = FALSE;
pPicture->repeatType = RepeatNone;
pPicture->alphaMap = 0;
pPicture->alphaOrigin.x = 0;
pPicture->alphaOrigin.y = 0;
pPicture->clipOrigin.x = 0;
pPicture->clipOrigin.y = 0;
pPicture->clientClip = 0;
pPicture->transform = 0;
pPicture->dither = None;
pPicture->filter = PictureGetFilterId (FilterNearest, -1, TRUE);
pPicture->filter_params = 0;
pPicture->filter_nparams = 0;
pPicture->serialNumber = GC_CHANGE_SERIAL_BIT;
pPicture->stateChanges = (1 << (CPLastBit+1)) - 1;
pPicture->pSourcePict = 0;
}
PicturePtr
AllocatePicture (ScreenPtr pScreen)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
PicturePtr pPicture;
char *ptr;
DevUnion *ppriv;
unsigned int *sizes;
unsigned int size;
int i;
pPicture = (PicturePtr) xalloc (ps->totalPictureSize);
if (!pPicture)
return 0;
ppriv = (DevUnion *)(pPicture + 1);
pPicture->devPrivates = ppriv;
sizes = ps->PicturePrivateSizes;
ptr = (char *)(ppriv + ps->PicturePrivateLen);
for (i = ps->PicturePrivateLen; --i >= 0; ppriv++, sizes++)
{
if ( (size = *sizes) )
{
ppriv->ptr = (pointer)ptr;
ptr += size;
}
else
ppriv->ptr = (pointer)NULL;
}
return pPicture;
}
PicturePtr
CreatePicture (Picture pid,
DrawablePtr pDrawable,
PictFormatPtr pFormat,
Mask vmask,
XID *vlist,
ClientPtr client,
int *error)
{
PicturePtr pPicture;
PictureScreenPtr ps = GetPictureScreen(pDrawable->pScreen);
pPicture = AllocatePicture (pDrawable->pScreen);
if (!pPicture)
{
*error = BadAlloc;
return 0;
}
pPicture->id = pid;
pPicture->pDrawable = pDrawable;
pPicture->pFormat = pFormat;
pPicture->format = pFormat->format | (pDrawable->bitsPerPixel << 24);
if (pDrawable->type == DRAWABLE_PIXMAP)
{
++((PixmapPtr)pDrawable)->refcnt;
pPicture->pNext = 0;
}
else
{
pPicture->pNext = GetPictureWindow(((WindowPtr) pDrawable));
SetPictureWindow(((WindowPtr) pDrawable), pPicture);
}
SetPictureToDefaults (pPicture);
if (vmask)
*error = ChangePicture (pPicture, vmask, vlist, 0, client);
else
*error = Success;
if (*error == Success)
*error = (*ps->CreatePicture) (pPicture);
if (*error != Success)
{
FreePicture (pPicture, (XID) 0);
pPicture = 0;
}
return pPicture;
}
static CARD32 xRenderColorToCard32(xRenderColor c)
{
return
(c.alpha >> 8 << 24) |
(c.red >> 8 << 16) |
(c.green & 0xff00) |
(c.blue >> 8);
}
static unsigned int premultiply(unsigned int x)
{
unsigned int a = x >> 24;
unsigned int t = (x & 0xff00ff) * a + 0x800080;
t = (t + ((t >> 8) & 0xff00ff)) >> 8;
t &= 0xff00ff;
x = ((x >> 8) & 0xff) * a + 0x80;
x = (x + ((x >> 8) & 0xff));
x &= 0xff00;
x |= t | (a << 24);
return x;
}
static unsigned int INTERPOLATE_PIXEL_256(unsigned int x, unsigned int a,
unsigned int y, unsigned int b)
{
CARD32 t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;
t >>= 8;
t &= 0xff00ff;
x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;
x &= 0xff00ff00;
x |= t;
return x;
}
static void initGradientColorTable(SourcePictPtr pGradient, int *error)
{
int begin_pos, end_pos;
xFixed incr, dpos;
int pos, current_stop;
PictGradientStopPtr stops = pGradient->linear.stops;
int nstops = pGradient->linear.nstops;
/* The position where the gradient begins and ends */
begin_pos = (stops[0].x * PICT_GRADIENT_STOPTABLE_SIZE) >> 16;
end_pos = (stops[nstops - 1].x * PICT_GRADIENT_STOPTABLE_SIZE) >> 16;
pos = 0; /* The position in the color table. */
/* Up to first point */
while (pos <= begin_pos) {
pGradient->linear.colorTable[pos] = xRenderColorToCard32(stops[0].color);
++pos;
}
incr = (1<<16)/ PICT_GRADIENT_STOPTABLE_SIZE; /* the double increment. */
dpos = incr * pos; /* The position in terms of 0-1. */
current_stop = 0; /* We always interpolate between current and current + 1. */
/* Gradient area */
while (pos < end_pos) {
unsigned int current_color = xRenderColorToCard32(stops[current_stop].color);
unsigned int next_color = xRenderColorToCard32(stops[current_stop + 1].color);
int dist = (int)(256*(dpos - stops[current_stop].x)
/ (stops[current_stop+1].x - stops[current_stop].x));
int idist = 256 - dist;
pGradient->linear.colorTable[pos] = premultiply(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist));
++pos;
dpos += incr;
if (dpos > stops[current_stop + 1].x)
++current_stop;
}
/* After last point */
while (pos < PICT_GRADIENT_STOPTABLE_SIZE) {
pGradient->linear.colorTable[pos] = xRenderColorToCard32(stops[nstops - 1].color);
++pos;
}
}
static void initGradient(SourcePictPtr pGradient, int stopCount,
xFixed *stopPoints, xRenderColor *stopColors, int *error)
{
int i;
xFixed dpos;
if (stopCount <= 0) {
*error = BadValue;
return;
}
dpos = -1;
for (i = 0; i < stopCount; ++i) {
if (stopPoints[i] <= dpos || stopPoints[i] > (1<<16)) {
*error = BadValue;
return;
}
dpos = stopPoints[i];
}
pGradient->linear.stops = xalloc(stopCount*sizeof(PictGradientStop));
if (!pGradient->linear.stops) {
*error = BadAlloc;
return;
}
pGradient->linear.nstops = stopCount;
for (i = 0; i < stopCount; ++i) {
pGradient->linear.stops[i].x = stopPoints[i];
pGradient->linear.stops[i].color = stopColors[i];
}
initGradientColorTable(pGradient, error);
}
static PicturePtr createSourcePicture(void)
{
PicturePtr pPicture;
pPicture = (PicturePtr) xalloc(sizeof(PictureRec));
pPicture->pDrawable = 0;
pPicture->format = PICT_a8r8g8b8;
pPicture->pFormat = 0;
pPicture->pNext = 0;
pPicture->devPrivates = 0;
SetPictureToDefaults(pPicture);
return pPicture;
}
PicturePtr
CreateSolidPicture (Picture pid, xRenderColor *color, int *error)
{
PicturePtr pPicture;
pPicture = createSourcePicture();
if (!pPicture) {
*error = BadAlloc;
return 0;
}
pPicture->id = pid;
pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictSolidFill));
if (!pPicture->pSourcePict) {
*error = BadAlloc;
xfree(pPicture);
return 0;
}
pPicture->pSourcePict->type = SourcePictTypeSolidFill;
pPicture->pSourcePict->solidFill.color = xRenderColorToCard32(*color);
return pPicture;
}
PicturePtr
CreateLinearGradientPicture (Picture pid, xPointFixed *p1, xPointFixed *p2,
int nStops, xFixed *stops, xRenderColor *colors, int *error)
{
PicturePtr pPicture;
if (nStops < 2) {
*error = BadValue;
return 0;
}
pPicture = createSourcePicture();
if (!pPicture) {
*error = BadAlloc;
return 0;
}
if (p1->x == p2->x && p1->y == p2->y) {
*error = BadValue;
return 0;
}
pPicture->id = pid;
pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictLinearGradient));
if (!pPicture->pSourcePict) {
*error = BadAlloc;
xfree(pPicture);
return 0;
}
pPicture->pSourcePict->linear.type = SourcePictTypeLinear;
pPicture->pSourcePict->linear.p1 = *p1;
pPicture->pSourcePict->linear.p2 = *p2;
initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
if (*error) {
xfree(pPicture);
return 0;
}
return pPicture;
}
#define FixedToDouble(x) ((x)/65536.)
PicturePtr
CreateRadialGradientPicture (Picture pid, xPointFixed *inner, xPointFixed *outer,
xFixed innerRadius, xFixed outerRadius,
int nStops, xFixed *stops, xRenderColor *colors, int *error)
{
PicturePtr pPicture;
PictRadialGradient *radial;
if (nStops < 2) {
*error = BadValue;
return 0;
}
pPicture = createSourcePicture();
if (!pPicture) {
*error = BadAlloc;
return 0;
}
{
double dx = (double)(inner->x - outer->x);
double dy = (double)(inner->y - outer->y);
if (sqrt(dx*dx + dy*dy) + (double)(innerRadius) > (double)(outerRadius)) {
*error = BadValue;
return 0;
}
}
pPicture->id = pid;
pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictRadialGradient));
if (!pPicture->pSourcePict) {
*error = BadAlloc;
xfree(pPicture);
return 0;
}
radial = &pPicture->pSourcePict->radial;
radial->type = SourcePictTypeRadial;
{
double x = (double)innerRadius / (double)outerRadius;
radial->dx = (outer->x - inner->x);
radial->dy = (outer->y - inner->y);
radial->fx = (inner->x) - x*radial->dx;
radial->fy = (inner->y) - x*radial->dy;
radial->m = 1./(1+x);
radial->b = -x*radial->m;
radial->dx /= 65536.;
radial->dy /= 65536.;
radial->fx /= 65536.;
radial->fy /= 65536.;
x = outerRadius/65536.;
radial->a = x*x - radial->dx*radial->dx - radial->dy*radial->dy;
}
initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
if (*error) {
xfree(pPicture);
return 0;
}
return pPicture;
}
PicturePtr
CreateConicalGradientPicture (Picture pid, xPointFixed *center, xFixed angle,
int nStops, xFixed *stops, xRenderColor *colors, int *error)
{
PicturePtr pPicture;
if (nStops < 2) {
*error = BadValue;
return 0;
}
pPicture = createSourcePicture();
if (!pPicture) {
*error = BadAlloc;
return 0;
}
pPicture->id = pid;
pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictConicalGradient));
if (!pPicture->pSourcePict) {
*error = BadAlloc;
xfree(pPicture);
return 0;
}
pPicture->pSourcePict->conical.type = SourcePictTypeConical;
pPicture->pSourcePict->conical.center = *center;
pPicture->pSourcePict->conical.angle = angle;
initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
if (*error) {
xfree(pPicture);
return 0;
}
return pPicture;
}
#define NEXT_VAL(_type) (vlist ? (_type) *vlist++ : (_type) ulist++->val)
#define NEXT_PTR(_type) ((_type) ulist++->ptr)
int
ChangePicture (PicturePtr pPicture,
Mask vmask,
XID *vlist,
DevUnion *ulist,
ClientPtr client)
{
ScreenPtr pScreen = pPicture->pDrawable ? pPicture->pDrawable->pScreen : 0;
PictureScreenPtr ps = pScreen ? GetPictureScreen(pScreen) : 0;
BITS32 index2;
int error = 0;
BITS32 maskQ;
pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
maskQ = vmask;
while (vmask && !error)
{
index2 = (BITS32) lowbit (vmask);
vmask &= ~index2;
pPicture->stateChanges |= index2;
switch (index2)
{
case CPRepeat:
{
unsigned int newr;
newr = NEXT_VAL(unsigned int);
if (newr <= RepeatReflect)
{
pPicture->repeat = (newr != RepeatNone);
pPicture->repeatType = newr;
}
else
{
client->errorValue = newr;
error = BadValue;
}
}
break;
case CPAlphaMap:
{
PicturePtr pAlpha;
if (vlist)
{
Picture pid = NEXT_VAL(Picture);
if (pid == None)
pAlpha = 0;
else
{
pAlpha = (PicturePtr) SecurityLookupIDByType(client,
pid,
PictureType,
SecurityWriteAccess|SecurityReadAccess);
if (!pAlpha)
{
client->errorValue = pid;
error = BadPixmap;
break;
}
if (pAlpha->pDrawable->type != DRAWABLE_PIXMAP)
{
client->errorValue = pid;
error = BadMatch;
break;
}
}
}
else
pAlpha = NEXT_PTR(PicturePtr);
if (!error)
{
if (pAlpha && pAlpha->pDrawable->type == DRAWABLE_PIXMAP)
pAlpha->refcnt++;
if (pPicture->alphaMap)
FreePicture ((pointer) pPicture->alphaMap, (XID) 0);
pPicture->alphaMap = pAlpha;
}
}
break;
case CPAlphaXOrigin:
pPicture->alphaOrigin.x = NEXT_VAL(INT16);
break;
case CPAlphaYOrigin:
pPicture->alphaOrigin.y = NEXT_VAL(INT16);
break;
case CPClipXOrigin:
pPicture->clipOrigin.x = NEXT_VAL(INT16);
break;
case CPClipYOrigin:
pPicture->clipOrigin.y = NEXT_VAL(INT16);
break;
case CPClipMask:
{
Pixmap pid;
PixmapPtr pPixmap;
int clipType;
if (!pScreen)
return BadDrawable;
if (vlist)
{
pid = NEXT_VAL(Pixmap);
if (pid == None)
{
clipType = CT_NONE;
pPixmap = NullPixmap;
}
else
{
clipType = CT_PIXMAP;
pPixmap = (PixmapPtr)SecurityLookupIDByType(client,
pid,
RT_PIXMAP,
SecurityReadAccess);
if (!pPixmap)
{
client->errorValue = pid;
error = BadPixmap;
break;
}
}
}
else
{
pPixmap = NEXT_PTR(PixmapPtr);
if (pPixmap)
clipType = CT_PIXMAP;
else
clipType = CT_NONE;
}
if (pPixmap)
{
if ((pPixmap->drawable.depth != 1) ||
(pPixmap->drawable.pScreen != pScreen))
{
error = BadMatch;
break;
}
else
{
clipType = CT_PIXMAP;
pPixmap->refcnt++;
}
}
error = (*ps->ChangePictureClip)(pPicture, clipType,
(pointer)pPixmap, 0);
break;
}
case CPGraphicsExposure:
{
unsigned int newe;
newe = NEXT_VAL(unsigned int);
if (newe <= xTrue)
pPicture->graphicsExposures = newe;
else
{
client->errorValue = newe;
error = BadValue;
}
}
break;
case CPSubwindowMode:
{
unsigned int news;
news = NEXT_VAL(unsigned int);
if (news == ClipByChildren || news == IncludeInferiors)
pPicture->subWindowMode = news;
else
{
client->errorValue = news;
error = BadValue;
}
}
break;
case CPPolyEdge:
{
unsigned int newe;
newe = NEXT_VAL(unsigned int);
if (newe == PolyEdgeSharp || newe == PolyEdgeSmooth)
pPicture->polyEdge = newe;
else
{
client->errorValue = newe;
error = BadValue;
}
}
break;
case CPPolyMode:
{
unsigned int newm;
newm = NEXT_VAL(unsigned int);
if (newm == PolyModePrecise || newm == PolyModeImprecise)
pPicture->polyMode = newm;
else
{
client->errorValue = newm;
error = BadValue;
}
}
break;
case CPDither:
pPicture->dither = NEXT_VAL(Atom);
break;
case CPComponentAlpha:
{
unsigned int newca;
newca = NEXT_VAL (unsigned int);
if (newca <= xTrue)
pPicture->componentAlpha = newca;
else
{
client->errorValue = newca;
error = BadValue;
}
}
break;
default:
client->errorValue = maskQ;
error = BadValue;
break;
}
}
if (ps)
(*ps->ChangePicture) (pPicture, maskQ);
return error;
}
int
SetPictureClipRects (PicturePtr pPicture,
int xOrigin,
int yOrigin,
int nRect,
xRectangle *rects)
{
ScreenPtr pScreen = pPicture->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
RegionPtr clientClip;
int result;
clientClip = RECTS_TO_REGION(pScreen,
nRect, rects, CT_UNSORTED);
if (!clientClip)
return BadAlloc;
result =(*ps->ChangePictureClip) (pPicture, CT_REGION,
(pointer) clientClip, 0);
if (result == Success)
{
pPicture->clipOrigin.x = xOrigin;
pPicture->clipOrigin.y = yOrigin;
pPicture->stateChanges |= CPClipXOrigin|CPClipYOrigin|CPClipMask;
pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
}
return result;
}
int
SetPictureClipRegion (PicturePtr pPicture,
int xOrigin,
int yOrigin,
RegionPtr pRegion)
{
ScreenPtr pScreen = pPicture->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
RegionPtr clientClip;
int result;
int type;
if (pRegion)
{
type = CT_REGION;
clientClip = REGION_CREATE (pScreen,
REGION_EXTENTS(pScreen, pRegion),
REGION_NUM_RECTS(pRegion));
if (!clientClip)
return BadAlloc;
if (!REGION_COPY (pSCreen, clientClip, pRegion))
{
REGION_DESTROY (pScreen, clientClip);
return BadAlloc;
}
}
else
{
type = CT_NONE;
clientClip = 0;
}
result =(*ps->ChangePictureClip) (pPicture, type,
(pointer) clientClip, 0);
if (result == Success)
{
pPicture->clipOrigin.x = xOrigin;
pPicture->clipOrigin.y = yOrigin;
pPicture->stateChanges |= CPClipXOrigin|CPClipYOrigin|CPClipMask;
pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
}
return result;
}
int
SetPictureTransform (PicturePtr pPicture,
PictTransform *transform)
{
static const PictTransform identity = { {
{ xFixed1, 0x00000, 0x00000 },
{ 0x00000, xFixed1, 0x00000 },
{ 0x00000, 0x00000, xFixed1 },
} };
ScreenPtr pScreen = pPicture->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
int result;
if (transform && memcmp (transform, &identity, sizeof (PictTransform)) == 0)
transform = 0;
if (transform)
{
if (!pPicture->transform)
{
pPicture->transform = (PictTransform *) xalloc (sizeof (PictTransform));
if (!pPicture->transform)
return BadAlloc;
}
*pPicture->transform = *transform;
}
else
{
if (pPicture->transform)
{
xfree (pPicture->transform);
pPicture->transform = 0;
}
}
pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
result = (*ps->ChangePictureTransform) (pPicture, transform);
return result;
}
void
CopyPicture (PicturePtr pSrc,
Mask mask,
PicturePtr pDst)
{
PictureScreenPtr ps = GetPictureScreen(pSrc->pDrawable->pScreen);
Mask origMask = mask;
pDst->serialNumber |= GC_CHANGE_SERIAL_BIT;
pDst->stateChanges |= mask;
while (mask) {
Mask bit = lowbit(mask);
switch (bit)
{
case CPRepeat:
pDst->repeat = pSrc->repeat;
pDst->repeatType = pSrc->repeatType;
break;
case CPAlphaMap:
if (pSrc->alphaMap && pSrc->alphaMap->pDrawable->type == DRAWABLE_PIXMAP)
pSrc->alphaMap->refcnt++;
if (pDst->alphaMap)
FreePicture ((pointer) pDst->alphaMap, (XID) 0);
pDst->alphaMap = pSrc->alphaMap;
break;
case CPAlphaXOrigin:
pDst->alphaOrigin.x = pSrc->alphaOrigin.x;
break;
case CPAlphaYOrigin:
pDst->alphaOrigin.y = pSrc->alphaOrigin.y;
break;
case CPClipXOrigin:
pDst->clipOrigin.x = pSrc->clipOrigin.x;
break;
case CPClipYOrigin:
pDst->clipOrigin.y = pSrc->clipOrigin.y;
break;
case CPClipMask:
switch (pSrc->clientClipType) {
case CT_NONE:
(*ps->ChangePictureClip)(pDst, CT_NONE, NULL, 0);
break;
case CT_REGION:
if (!pSrc->clientClip) {
(*ps->ChangePictureClip)(pDst, CT_NONE, NULL, 0);
} else {
RegionPtr clientClip;
RegionPtr srcClientClip = (RegionPtr)pSrc->clientClip;
clientClip = REGION_CREATE(pSrc->pDrawable->pScreen,
REGION_EXTENTS(pSrc->pDrawable->pScreen, srcClientClip),
REGION_NUM_RECTS(srcClientClip));
(*ps->ChangePictureClip)(pDst, CT_REGION, clientClip, 0);
}
break;
default:
/* XXX: CT_PIXMAP unimplemented */
break;
}
break;
case CPGraphicsExposure:
pDst->graphicsExposures = pSrc->graphicsExposures;
break;
case CPPolyEdge:
pDst->polyEdge = pSrc->polyEdge;
break;
case CPPolyMode:
pDst->polyMode = pSrc->polyMode;
break;
case CPDither:
pDst->dither = pSrc->dither;
break;
case CPComponentAlpha:
pDst->componentAlpha = pSrc->componentAlpha;
break;
}
mask &= ~bit;
}
(*ps->ChangePicture)(pDst, origMask);
}
static void
ValidateOnePicture (PicturePtr pPicture)
{
if (pPicture->pDrawable && pPicture->serialNumber != pPicture->pDrawable->serialNumber)
{
PictureScreenPtr ps = GetPictureScreen(pPicture->pDrawable->pScreen);
(*ps->ValidatePicture) (pPicture, pPicture->stateChanges);
pPicture->stateChanges = 0;
pPicture->serialNumber = pPicture->pDrawable->serialNumber;
}
}
void
ValidatePicture(PicturePtr pPicture)
{
ValidateOnePicture (pPicture);
if (pPicture->alphaMap)
ValidateOnePicture (pPicture->alphaMap);
}
int
FreePicture (pointer value,
XID pid)
{
PicturePtr pPicture = (PicturePtr) value;
if (--pPicture->refcnt == 0)
{
if (pPicture->transform)
xfree (pPicture->transform);
if (!pPicture->pDrawable) {
if (pPicture->pSourcePict) {
if (pPicture->pSourcePict->type != SourcePictTypeSolidFill)
xfree(pPicture->pSourcePict->linear.stops);
xfree(pPicture->pSourcePict);
}
} else {
ScreenPtr pScreen = pPicture->pDrawable->pScreen;
PictureScreenPtr ps = GetPictureScreen(pScreen);
if (pPicture->alphaMap)
FreePicture ((pointer) pPicture->alphaMap, (XID) 0);
(*ps->DestroyPicture) (pPicture);
(*ps->DestroyPictureClip) (pPicture);
if (pPicture->pDrawable->type == DRAWABLE_WINDOW)
{
WindowPtr pWindow = (WindowPtr) pPicture->pDrawable;
PicturePtr *pPrev;
for (pPrev = (PicturePtr *) &((pWindow)->devPrivates[PictureWindowPrivateIndex].ptr);
*pPrev;
pPrev = &(*pPrev)->pNext)
{
if (*pPrev == pPicture)
{
*pPrev = pPicture->pNext;
break;
}
}
}
else if (pPicture->pDrawable->type == DRAWABLE_PIXMAP)
{
(*pScreen->DestroyPixmap) ((PixmapPtr)pPicture->pDrawable);
}
}
xfree (pPicture);
}
return Success;
}
int
FreePictFormat (pointer pPictFormat,
XID pid)
{
return Success;
}
/**
* ReduceCompositeOp is used to choose simpler ops for cases where alpha
* channels are always one and so math on the alpha channel per pixel becomes
* unnecessary. It may also avoid destination reads sometimes if apps aren't
* being careful to avoid these cases.
*/
static Bool
ReduceCompositeOp (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst)
{
Bool no_src_alpha, no_dst_alpha;
no_src_alpha = PICT_FORMAT_COLOR(pSrc->format) &&
PICT_FORMAT_A(pSrc->format) == 0 &&
pSrc->alphaMap == NULL &&
pMask == NULL;
no_dst_alpha = PICT_FORMAT_COLOR(pDst->format) &&
PICT_FORMAT_A(pDst->format) == 0 &&
pDst->alphaMap == NULL;
/* TODO, maybe: Conjoint and Disjoint op reductions? */
/* Deal with simplifications where the source alpha is always 1. */
if (no_src_alpha)
{
switch (op) {
case PictOpOver:
op = PictOpSrc;
break;
case PictOpInReverse:
op = PictOpDst;
break;
case PictOpOutReverse:
op = PictOpClear;
break;
case PictOpAtop:
op = PictOpIn;
break;
case PictOpAtopReverse:
op = PictOpOverReverse;
break;
case PictOpXor:
op = PictOpOut;
break;
default:
break;
}
}
/* Deal with simplifications when the destination alpha is always 1 */
if (no_dst_alpha)
{
switch (op) {
case PictOpOverReverse:
op = PictOpDst;
break;
case PictOpIn:
op = PictOpSrc;
break;
case PictOpOut:
op = PictOpClear;
break;
case PictOpAtop:
op = PictOpOver;
break;
case PictOpXor:
op = PictOpOutReverse;
break;
default:
break;
}
}
/* Reduce some con/disjoint ops to the basic names. */
switch (op) {
case PictOpDisjointClear:
case PictOpConjointClear:
op = PictOpClear;
break;
case PictOpDisjointSrc:
case PictOpConjointSrc:
op = PictOpSrc;
break;
case PictOpDisjointDst:
case PictOpConjointDst:
op = PictOpDst;
break;
default:
break;
}
return op;
}
void
CompositePicture (CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xMask,
INT16 yMask,
INT16 xDst,
INT16 yDst,
CARD16 width,
CARD16 height)
{
PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
ValidatePicture (pSrc);
if (pMask)
ValidatePicture (pMask);
ValidatePicture (pDst);
op = ReduceCompositeOp (op, pSrc, pMask, pDst);
if (op == PictOpDst)
return;
(*ps->Composite) (op,
pSrc,
pMask,
pDst,
xSrc,
ySrc,
xMask,
yMask,
xDst,
yDst,
width,
height);
}
void
CompositeGlyphs (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int nlist,
GlyphListPtr lists,
GlyphPtr *glyphs)
{
PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
ValidatePicture (pSrc);
ValidatePicture (pDst);
(*ps->Glyphs) (op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, lists, glyphs);
}
void
CompositeRects (CARD8 op,
PicturePtr pDst,
xRenderColor *color,
int nRect,
xRectangle *rects)
{
PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
ValidatePicture (pDst);
(*ps->CompositeRects) (op, pDst, color, nRect, rects);
}
void
CompositeTrapezoids (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int ntrap,
xTrapezoid *traps)
{
PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
ValidatePicture (pSrc);
ValidatePicture (pDst);
(*ps->Trapezoids) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntrap, traps);
}
void
CompositeTriangles (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int ntriangles,
xTriangle *triangles)
{
PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
ValidatePicture (pSrc);
ValidatePicture (pDst);
(*ps->Triangles) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntriangles, triangles);
}
void
CompositeTriStrip (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int npoints,
xPointFixed *points)
{
PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
ValidatePicture (pSrc);
ValidatePicture (pDst);
(*ps->TriStrip) (op, pSrc, pDst, maskFormat, xSrc, ySrc, npoints, points);
}
void
CompositeTriFan (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int npoints,
xPointFixed *points)
{
PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
ValidatePicture (pSrc);
ValidatePicture (pDst);
(*ps->TriFan) (op, pSrc, pDst, maskFormat, xSrc, ySrc, npoints, points);
}
void
AddTraps (PicturePtr pPicture,
INT16 xOff,
INT16 yOff,
int ntrap,
xTrap *traps)
{
PictureScreenPtr ps = GetPictureScreen(pPicture->pDrawable->pScreen);
ValidatePicture (pPicture);
(*ps->AddTraps) (pPicture, xOff, yOff, ntrap, traps);
}
#define MAX_FIXED_48_16 ((xFixed_48_16) 0x7fffffff)
#define MIN_FIXED_48_16 (-((xFixed_48_16) 1 << 31))
_X_EXPORT Bool
PictureTransformPoint3d (PictTransformPtr transform,
PictVectorPtr vector)
{
PictVector result;
int i, j;
xFixed_32_32 partial;
xFixed_48_16 v;
for (j = 0; j < 3; j++)
{
v = 0;
for (i = 0; i < 3; i++)
{
partial = ((xFixed_48_16) transform->matrix[j][i] *
(xFixed_48_16) vector->vector[i]);
v += partial >> 16;
}
if (v > MAX_FIXED_48_16 || v < MIN_FIXED_48_16)
return FALSE;
result.vector[j] = (xFixed) v;
}
if (!result.vector[2])
return FALSE;
*vector = result;
return TRUE;
}
_X_EXPORT Bool
PictureTransformPoint (PictTransformPtr transform,
PictVectorPtr vector)
{
PictVector result;
int i, j;
xFixed_32_32 partial;
xFixed_48_16 v;
for (j = 0; j < 3; j++)
{
v = 0;
for (i = 0; i < 3; i++)
{
partial = ((xFixed_48_16) transform->matrix[j][i] *
(xFixed_48_16) vector->vector[i]);
v += partial >> 16;
}
if (v > MAX_FIXED_48_16 || v < MIN_FIXED_48_16)
return FALSE;
result.vector[j] = (xFixed) v;
}
if (!result.vector[2])
return FALSE;
for (j = 0; j < 2; j++)
{
partial = (xFixed_48_16) result.vector[j] << 16;
v = partial / result.vector[2];
if (v > MAX_FIXED_48_16 || v < MIN_FIXED_48_16)
return FALSE;
vector->vector[j] = (xFixed) v;
}
vector->vector[2] = xFixed1;
return TRUE;
}
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