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-rw-r--r--xorg-server/render/picture.c3618
1 files changed, 1780 insertions, 1838 deletions
diff --git a/xorg-server/render/picture.c b/xorg-server/render/picture.c
index ee0f8dee5..5640c4d96 100644
--- a/xorg-server/render/picture.c
+++ b/xorg-server/render/picture.c
@@ -1,1838 +1,1780 @@
-/*
- *
- * 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"
-#include "xace.h"
-
-DevPrivateKeyRec PictureScreenPrivateKeyRec;
-DevPrivateKeyRec PictureWindowPrivateKeyRec;
-static int PictureGeneration;
-RESTYPE PictureType;
-RESTYPE PictFormatType;
-RESTYPE GlyphSetType;
-int PictureCmapPolicy = PictureCmapPolicyDefault;
-
-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);
- free(ps->formats);
- free(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_FORMAT(BitsPerPixel(8),
- PICT_TYPE_A,
- 8, 0, 0, 0);
- formats[nformats].depth = 8;
- nformats++;
- formats[nformats].format = PICT_FORMAT(BitsPerPixel(4),
- PICT_TYPE_A,
- 4, 0, 0, 0);
- 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++;
- formats[nformats].format = PICT_b8g8r8a8;
- formats[nformats].depth = 32;
- nformats++;
- formats[nformats].format = PICT_b8g8r8x8;
- 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 three direct formats,
- * fields must be packed together at the bottom of the pixel
- */
- 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;
- }
- else if (pVisual->offsetRed == pVisual->offsetGreen - r &&
- pVisual->offsetGreen == pVisual->offsetBlue - g &&
- pVisual->offsetBlue == bpp - b)
- {
- type = PICT_TYPE_BGRA;
- }
- 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);
- }
- if (pDepth->depth >= 30)
- {
- nformats = addFormat (formats, nformats,
- PICT_a2r10g10b10, pDepth->depth);
- nformats = addFormat (formats, nformats,
- PICT_x2r10g10b10, pDepth->depth);
- nformats = addFormat (formats, nformats,
- PICT_a2b10g10r10, pDepth->depth);
- nformats = addFormat (formats, nformats,
- PICT_x2b10g10r10, pDepth->depth);
- }
- break;
- }
- }
-
-
- pFormats = calloc(nformats, sizeof (PictFormatRec));
- if (!pFormats)
- return 0;
- 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_BGRA:
- pFormats[f].type = PictTypeDirect;
-
- pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));
- pFormats[f].direct.blue = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format));
-
- pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));
- pFormats[f].direct.green = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -
- PICT_FORMAT_G(format));
-
- pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));
- pFormats[f].direct.red = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -
- PICT_FORMAT_G(format) - PICT_FORMAT_R(format));
-
- pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
- pFormats[f].direct.alpha = 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
-PictureInitIndexedFormat(ScreenPtr pScreen, PictFormatPtr format)
-{
- PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
-
- if (format->type != PictTypeIndexed || format->index.pColormap)
- return TRUE;
-
- if (format->index.vid == pScreen->rootVisual) {
- dixLookupResourceByType((pointer *)&format->index.pColormap,
- pScreen->defColormap, RT_COLORMAP,
- serverClient, DixGetAttrAccess);
- } else {
- VisualPtr 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;
- return TRUE;
-}
-
-static 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 (!PictureInitIndexedFormat(pScreen, format++))
- return FALSE;
- return TRUE;
-}
-
-Bool
-PictureFinishInit (void)
-{
- int s;
-
- for (s = 0; s < screenInfo.numScreens; s++)
- {
- if (!PictureInitIndexedFormats (screenInfo.screens[s]))
- return FALSE;
- (void) AnimCurInit (screenInfo.screens[s]);
- }
-
- return TRUE;
-}
-
-Bool
-PictureSetSubpixelOrder (ScreenPtr pScreen, int subpixel)
-{
- PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
-
- if (!ps)
- return FALSE;
- ps->subpixel = subpixel;
- return TRUE;
-
-}
-
-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;
-}
-
-Bool
-PictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
-{
- PictureScreenPtr ps;
- int n;
- CARD32 type, a, r, g, b;
-
- if (PictureGeneration != serverGeneration)
- {
- PictureType = CreateNewResourceType (FreePicture, "PICTURE");
- if (!PictureType)
- return FALSE;
- PictFormatType = CreateNewResourceType (FreePictFormat, "PICTFORMAT");
- if (!PictFormatType)
- return FALSE;
- GlyphSetType = CreateNewResourceType (FreeGlyphSet, "GLYPHSET");
- if (!GlyphSetType)
- return FALSE;
- PictureGeneration = serverGeneration;
- }
- if (!dixRegisterPrivateKey(&PictureScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
- return FALSE;
-
- if (!dixRegisterPrivateKey(&PictureWindowPrivateKeyRec, PRIVATE_WINDOW, 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)))
- {
- free(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 if (formats[n].direct.red == 0)
- type = PICT_TYPE_ABGR;
- else
- type = PICT_TYPE_BGRA;
- 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) malloc(sizeof (PictureScreenRec));
- if (!ps)
- {
- free(formats);
- return FALSE;
- }
- SetPictureScreen(pScreen, ps);
-
- 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);
- free(formats);
- free(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->filter = PictureGetFilterId (FilterNearest, -1, TRUE);
- pPicture->filter_params = 0;
- pPicture->filter_nparams = 0;
-
- pPicture->serialNumber = GC_CHANGE_SERIAL_BIT;
- pPicture->stateChanges = -1;
- pPicture->pSourcePict = 0;
-}
-
-PicturePtr
-CreatePicture (Picture pid,
- DrawablePtr pDrawable,
- PictFormatPtr pFormat,
- Mask vmask,
- XID *vlist,
- ClientPtr client,
- int *error)
-{
- PicturePtr pPicture;
- PictureScreenPtr ps = GetPictureScreen(pDrawable->pScreen);
-
- pPicture = dixAllocateObjectWithPrivates(PictureRec, PRIVATE_PICTURE);
- if (!pPicture)
- {
- *error = BadAlloc;
- return 0;
- }
-
- pPicture->id = pid;
- pPicture->pDrawable = pDrawable;
- pPicture->pFormat = pFormat;
- pPicture->format = pFormat->format | (pDrawable->bitsPerPixel << 24);
-
- /* security creation/labeling check */
- *error = XaceHook(XACE_RESOURCE_ACCESS, client, pid, PictureType, pPicture,
- RT_PIXMAP, pDrawable, DixCreateAccess|DixSetAttrAccess);
- if (*error != Success)
- goto out;
-
- 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);
-out:
- 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;
-}
-
-CARD32
-PictureGradientColor (PictGradientStopPtr stop1,
- PictGradientStopPtr stop2,
- CARD32 x)
-{
- CARD32 current_color, next_color;
- int dist, idist;
-
- current_color = xRenderColorToCard32 (stop1->color);
- next_color = xRenderColorToCard32 (stop2->color);
-
- dist = (int) (256 * (x - stop1->x) / (stop2->x - stop1->x));
- idist = 256 - dist;
-
- return premultiply (INTERPOLATE_PIXEL_256 (current_color, idist,
- next_color, dist));
-}
-
-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->gradient.stops = malloc(stopCount*sizeof(PictGradientStop));
- if (!pGradient->gradient.stops) {
- *error = BadAlloc;
- return;
- }
-
- pGradient->gradient.nstops = stopCount;
-
- for (i = 0; i < stopCount; ++i) {
- pGradient->gradient.stops[i].x = stopPoints[i];
- pGradient->gradient.stops[i].color = stopColors[i];
- }
-
- pGradient->gradient.class = SourcePictClassUnknown;
- pGradient->gradient.stopRange = 0xffff;
- pGradient->gradient.colorTable = NULL;
- pGradient->gradient.colorTableSize = 0;
-}
-
-static PicturePtr createSourcePicture(void)
-{
- PicturePtr pPicture;
- pPicture = dixAllocateObjectWithPrivates(PictureRec, PRIVATE_PICTURE);
- pPicture->pDrawable = 0;
- pPicture->pFormat = 0;
- pPicture->pNext = 0;
- pPicture->format = PICT_a8r8g8b8;
-
- 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) malloc(sizeof(PictSolidFill));
- if (!pPicture->pSourcePict) {
- *error = BadAlloc;
- free(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;
- }
-
- pPicture->id = pid;
- pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictLinearGradient));
- if (!pPicture->pSourcePict) {
- *error = BadAlloc;
- free(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) {
- free(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;
- }
-
- pPicture->id = pid;
- pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictRadialGradient));
- if (!pPicture->pSourcePict) {
- *error = BadAlloc;
- free(pPicture);
- return 0;
- }
- radial = &pPicture->pSourcePict->radial;
-
- radial->type = SourcePictTypeRadial;
- radial->c1.x = inner->x;
- radial->c1.y = inner->y;
- radial->c1.radius = innerRadius;
- radial->c2.x = outer->x;
- radial->c2.y = outer->y;
- radial->c2.radius = outerRadius;
- radial->cdx = (radial->c2.x - radial->c1.x) / 65536.;
- radial->cdy = (radial->c2.y - radial->c1.y) / 65536.;
- radial->dr = (radial->c2.radius - radial->c1.radius) / 65536.;
- radial->A = ( radial->cdx * radial->cdx
- + radial->cdy * radial->cdy
- - radial->dr * radial->dr);
-
- initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
- if (*error) {
- free(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) malloc(sizeof(PictConicalGradient));
- if (!pPicture->pSourcePict) {
- *error = BadAlloc;
- free(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) {
- free(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
- {
- error = dixLookupResourceByType((pointer *)&pAlpha, pid,
- PictureType, client,
- DixReadAccess);
- if (error != Success)
- {
- client->errorValue = pid;
- break;
- }
- if (pAlpha->pDrawable == NULL ||
- 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;
- error = dixLookupResourceByType((pointer *)&pPixmap, pid,
- RT_PIXMAP, client,
- DixReadAccess);
- if (error != Success)
- {
- client->errorValue = pid;
- 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:
- (void) NEXT_VAL(Atom); /* unimplemented */
- 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 = RegionFromRects(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 = RegionCreate(RegionExtents(pRegion),
- RegionNumRects(pRegion));
- if (!clientClip)
- return BadAlloc;
- if (!RegionCopy(clientClip, pRegion))
- {
- RegionDestroy(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;
-}
-
-static Bool
-transformIsIdentity(PictTransform *t)
-{
- return ((t->matrix[0][0] == t->matrix[1][1]) &&
- (t->matrix[0][0] == t->matrix[2][2]) &&
- (t->matrix[0][0] != 0) &&
- (t->matrix[0][1] == 0) &&
- (t->matrix[0][2] == 0) &&
- (t->matrix[1][0] == 0) &&
- (t->matrix[1][2] == 0) &&
- (t->matrix[2][0] == 0) &&
- (t->matrix[2][1] == 0));
-}
-
-int
-SetPictureTransform (PicturePtr pPicture,
- PictTransform *transform)
-{
- if (transform && transformIsIdentity (transform))
- transform = 0;
-
- if (transform)
- {
- if (!pPicture->transform)
- {
- pPicture->transform = (PictTransform *) malloc(sizeof (PictTransform));
- if (!pPicture->transform)
- return BadAlloc;
- }
- *pPicture->transform = *transform;
- }
- else
- {
- free(pPicture->transform);
- pPicture->transform = NULL;
- }
- pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
-
- if (pPicture->pDrawable != NULL) {
- int result;
- PictureScreenPtr ps = GetPictureScreen(pPicture->pDrawable->pScreen);
-
- result = (*ps->ChangePictureTransform) (pPicture, transform);
-
- return result;
- }
-
- return Success;
-}
-
-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 = RegionCreate(
- RegionExtents(srcClientClip),
- RegionNumRects(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:
- 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)
- {
- free(pPicture->transform);
-
- if (pPicture->pSourcePict)
- {
- if (pPicture->pSourcePict->type != SourcePictTypeSolidFill)
- free(pPicture->pSourcePict->linear.stops);
-
- free(pPicture->pSourcePict);
- }
-
- if (pPicture->pDrawable)
- {
- 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 *)dixLookupPrivateAddr
- (&pWindow->devPrivates, PictureWindowPrivateKey);
- *pPrev;
- pPrev = &(*pPrev)->pNext)
- {
- if (*pPrev == pPicture)
- {
- *pPrev = pPicture->pNext;
- break;
- }
- }
- }
- else if (pPicture->pDrawable->type == DRAWABLE_PIXMAP)
- {
- (*pScreen->DestroyPixmap) ((PixmapPtr)pPicture->pDrawable);
- }
- }
- dixFreeObjectWithPrivates(pPicture, PRIVATE_PICTURE);
- }
- 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 CARD8
-ReduceCompositeOp (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst,
- INT16 xSrc, INT16 ySrc, CARD16 width, CARD16 height)
-{
- Bool no_src_alpha, no_dst_alpha;
-
- /* Sampling off the edge of a RepeatNone picture introduces alpha
- * even if the picture itself doesn't have alpha. We don't try to
- * detect every case where we don't sample off the edge, just the
- * simplest case where there is no transform on the source
- * picture.
- */
- no_src_alpha = PICT_FORMAT_COLOR(pSrc->format) &&
- PICT_FORMAT_A(pSrc->format) == 0 &&
- (pSrc->repeatType != RepeatNone ||
- (!pSrc->transform &&
- xSrc >= 0 && ySrc >= 0 &&
- xSrc + width <= pSrc->pDrawable->width &&
- ySrc + height <= pSrc->pDrawable->height)) &&
- 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, xSrc, ySrc, width, height);
- if (op == PictOpDst)
- return;
-
- (*ps->Composite) (op,
- pSrc,
- pMask,
- pDst,
- xSrc,
- ySrc,
- xMask,
- yMask,
- xDst,
- yDst,
- width,
- height);
-}
-
-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)
-{
- xTriangle *tris, *tri;
- int ntri;
-
- if (npoints < 3)
- return;
- ntri = npoints - 2;
- tris = malloc(ntri * sizeof (xTriangle));
- if (!tris)
- return;
- for (tri = tris; npoints >= 3; npoints--, points++, tri++)
- {
- tri->p1 = points[0];
- tri->p2 = points[1];
- tri->p3 = points[2];
- }
- CompositeTriangles (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
- free(tris);
-}
-
-void
-CompositeTriFan (CARD8 op,
- PicturePtr pSrc,
- PicturePtr pDst,
- PictFormatPtr maskFormat,
- INT16 xSrc,
- INT16 ySrc,
- int npoints,
- xPointFixed *points)
-{
- xTriangle *tris, *tri;
- xPointFixed *first;
- int ntri;
-
- if (npoints < 3)
- return;
- ntri = npoints - 2;
- tris = malloc(ntri * sizeof (xTriangle));
- if (!tris)
- return;
- first = points++;
- for (tri = tris; npoints >= 3; npoints--, points++, tri++)
- {
- tri->p1 = *first;
- tri->p2 = points[0];
- tri->p3 = points[1];
- }
- CompositeTriangles (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
- free(tris);
-}
-
-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);
-}
-
+/*
+ *
+ * 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"
+#include "xace.h"
+
+DevPrivateKeyRec PictureScreenPrivateKeyRec;
+DevPrivateKeyRec PictureWindowPrivateKeyRec;
+static int PictureGeneration;
+RESTYPE PictureType;
+RESTYPE PictFormatType;
+RESTYPE GlyphSetType;
+int PictureCmapPolicy = PictureCmapPolicyDefault;
+
+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);
+ free(ps->formats);
+ free(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) ((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_FORMAT(BitsPerPixel(8),
+ PICT_TYPE_A,
+ 8, 0, 0, 0);
+ formats[nformats].depth = 8;
+ nformats++;
+ formats[nformats].format = PICT_FORMAT(BitsPerPixel(4),
+ PICT_TYPE_A,
+ 4, 0, 0, 0);
+ 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++;
+ formats[nformats].format = PICT_b8g8r8a8;
+ formats[nformats].depth = 32;
+ nformats++;
+ formats[nformats].format = PICT_b8g8r8x8;
+ 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 three direct formats,
+ * fields must be packed together at the bottom of the pixel
+ */
+ 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;
+ }
+ else if (pVisual->offsetRed == pVisual->offsetGreen - r &&
+ pVisual->offsetGreen == pVisual->offsetBlue - g &&
+ pVisual->offsetBlue == bpp - b)
+ {
+ type = PICT_TYPE_BGRA;
+ }
+ 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);
+ }
+ if (pDepth->depth >= 30)
+ {
+ nformats = addFormat (formats, nformats,
+ PICT_a2r10g10b10, pDepth->depth);
+ nformats = addFormat (formats, nformats,
+ PICT_x2r10g10b10, pDepth->depth);
+ nformats = addFormat (formats, nformats,
+ PICT_a2b10g10r10, pDepth->depth);
+ nformats = addFormat (formats, nformats,
+ PICT_x2b10g10r10, pDepth->depth);
+ }
+ break;
+ }
+ }
+
+
+ pFormats = calloc(nformats, sizeof (PictFormatRec));
+ if (!pFormats)
+ return 0;
+ 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_BGRA:
+ pFormats[f].type = PictTypeDirect;
+
+ pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));
+ pFormats[f].direct.blue = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format));
+
+ pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));
+ pFormats[f].direct.green = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -
+ PICT_FORMAT_G(format));
+
+ pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));
+ pFormats[f].direct.red = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -
+ PICT_FORMAT_G(format) - PICT_FORMAT_R(format));
+
+ pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
+ pFormats[f].direct.alpha = 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
+PictureInitIndexedFormat(ScreenPtr pScreen, PictFormatPtr format)
+{
+ PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
+
+ if (format->type != PictTypeIndexed || format->index.pColormap)
+ return TRUE;
+
+ if (format->index.vid == pScreen->rootVisual) {
+ dixLookupResourceByType((pointer *)&format->index.pColormap,
+ pScreen->defColormap, RT_COLORMAP,
+ serverClient, DixGetAttrAccess);
+ } else {
+ VisualPtr 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;
+ return TRUE;
+}
+
+static 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 (!PictureInitIndexedFormat(pScreen, format++))
+ return FALSE;
+ return TRUE;
+}
+
+Bool
+PictureFinishInit (void)
+{
+ int s;
+
+ for (s = 0; s < screenInfo.numScreens; s++)
+ {
+ if (!PictureInitIndexedFormats (screenInfo.screens[s]))
+ return FALSE;
+ (void) AnimCurInit (screenInfo.screens[s]);
+ }
+
+ return TRUE;
+}
+
+Bool
+PictureSetSubpixelOrder (ScreenPtr pScreen, int subpixel)
+{
+ PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
+
+ if (!ps)
+ return FALSE;
+ ps->subpixel = subpixel;
+ return TRUE;
+
+}
+
+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;
+}
+
+Bool
+PictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
+{
+ PictureScreenPtr ps;
+ int n;
+ CARD32 type, a, r, g, b;
+
+ if (PictureGeneration != serverGeneration)
+ {
+ PictureType = CreateNewResourceType (FreePicture, "PICTURE");
+ if (!PictureType)
+ return FALSE;
+ PictFormatType = CreateNewResourceType (FreePictFormat, "PICTFORMAT");
+ if (!PictFormatType)
+ return FALSE;
+ GlyphSetType = CreateNewResourceType (FreeGlyphSet, "GLYPHSET");
+ if (!GlyphSetType)
+ return FALSE;
+ PictureGeneration = serverGeneration;
+ }
+ if (!dixRegisterPrivateKey(&PictureScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
+ return FALSE;
+
+ if (!dixRegisterPrivateKey(&PictureWindowPrivateKeyRec, PRIVATE_WINDOW, 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)))
+ {
+ free(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 if (formats[n].direct.red == 0)
+ type = PICT_TYPE_ABGR;
+ else
+ type = PICT_TYPE_BGRA;
+ 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) malloc(sizeof (PictureScreenRec));
+ if (!ps)
+ {
+ free(formats);
+ return FALSE;
+ }
+ SetPictureScreen(pScreen, ps);
+
+ 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);
+ free(formats);
+ free(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->filter = PictureGetFilterId (FilterNearest, -1, TRUE);
+ pPicture->filter_params = 0;
+ pPicture->filter_nparams = 0;
+
+ pPicture->serialNumber = GC_CHANGE_SERIAL_BIT;
+ pPicture->stateChanges = -1;
+ pPicture->pSourcePict = 0;
+}
+
+PicturePtr
+CreatePicture (Picture pid,
+ DrawablePtr pDrawable,
+ PictFormatPtr pFormat,
+ Mask vmask,
+ XID *vlist,
+ ClientPtr client,
+ int *error)
+{
+ PicturePtr pPicture;
+ PictureScreenPtr ps = GetPictureScreen(pDrawable->pScreen);
+
+ pPicture = dixAllocateObjectWithPrivates(PictureRec, PRIVATE_PICTURE);
+ if (!pPicture)
+ {
+ *error = BadAlloc;
+ return 0;
+ }
+
+ pPicture->id = pid;
+ pPicture->pDrawable = pDrawable;
+ pPicture->pFormat = pFormat;
+ pPicture->format = pFormat->format | (pDrawable->bitsPerPixel << 24);
+
+ /* security creation/labeling check */
+ *error = XaceHook(XACE_RESOURCE_ACCESS, client, pid, PictureType, pPicture,
+ RT_PIXMAP, pDrawable, DixCreateAccess|DixSetAttrAccess);
+ if (*error != Success)
+ goto out;
+
+ 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);
+out:
+ 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 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->gradient.stops = malloc(stopCount*sizeof(PictGradientStop));
+ if (!pGradient->gradient.stops) {
+ *error = BadAlloc;
+ return;
+ }
+
+ pGradient->gradient.nstops = stopCount;
+
+ for (i = 0; i < stopCount; ++i) {
+ pGradient->gradient.stops[i].x = stopPoints[i];
+ pGradient->gradient.stops[i].color = stopColors[i];
+ }
+}
+
+static PicturePtr createSourcePicture(void)
+{
+ PicturePtr pPicture;
+ pPicture = dixAllocateObjectWithPrivates(PictureRec, PRIVATE_PICTURE);
+ pPicture->pDrawable = 0;
+ pPicture->pFormat = 0;
+ pPicture->pNext = 0;
+ pPicture->format = PICT_a8r8g8b8;
+
+ 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) malloc(sizeof(PictSolidFill));
+ if (!pPicture->pSourcePict) {
+ *error = BadAlloc;
+ free(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;
+ }
+
+ pPicture->id = pid;
+ pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictLinearGradient));
+ if (!pPicture->pSourcePict) {
+ *error = BadAlloc;
+ free(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) {
+ free(pPicture);
+ return 0;
+ }
+ return pPicture;
+}
+
+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;
+ }
+
+ pPicture->id = pid;
+ pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictRadialGradient));
+ if (!pPicture->pSourcePict) {
+ *error = BadAlloc;
+ free(pPicture);
+ return 0;
+ }
+ radial = &pPicture->pSourcePict->radial;
+
+ radial->type = SourcePictTypeRadial;
+ radial->c1.x = inner->x;
+ radial->c1.y = inner->y;
+ radial->c1.radius = innerRadius;
+ radial->c2.x = outer->x;
+ radial->c2.y = outer->y;
+ radial->c2.radius = outerRadius;
+
+ initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
+ if (*error) {
+ free(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) malloc(sizeof(PictConicalGradient));
+ if (!pPicture->pSourcePict) {
+ *error = BadAlloc;
+ free(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) {
+ free(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
+ {
+ error = dixLookupResourceByType((pointer *)&pAlpha, pid,
+ PictureType, client,
+ DixReadAccess);
+ if (error != Success)
+ {
+ client->errorValue = pid;
+ break;
+ }
+ if (pAlpha->pDrawable == NULL ||
+ 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;
+ error = dixLookupResourceByType((pointer *)&pPixmap, pid,
+ RT_PIXMAP, client,
+ DixReadAccess);
+ if (error != Success)
+ {
+ client->errorValue = pid;
+ 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:
+ (void) NEXT_VAL(Atom); /* unimplemented */
+ 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 = RegionFromRects(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 = RegionCreate(RegionExtents(pRegion),
+ RegionNumRects(pRegion));
+ if (!clientClip)
+ return BadAlloc;
+ if (!RegionCopy(clientClip, pRegion))
+ {
+ RegionDestroy(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;
+}
+
+static Bool
+transformIsIdentity(PictTransform *t)
+{
+ return ((t->matrix[0][0] == t->matrix[1][1]) &&
+ (t->matrix[0][0] == t->matrix[2][2]) &&
+ (t->matrix[0][0] != 0) &&
+ (t->matrix[0][1] == 0) &&
+ (t->matrix[0][2] == 0) &&
+ (t->matrix[1][0] == 0) &&
+ (t->matrix[1][2] == 0) &&
+ (t->matrix[2][0] == 0) &&
+ (t->matrix[2][1] == 0));
+}
+
+int
+SetPictureTransform (PicturePtr pPicture,
+ PictTransform *transform)
+{
+ if (transform && transformIsIdentity (transform))
+ transform = 0;
+
+ if (transform)
+ {
+ if (!pPicture->transform)
+ {
+ pPicture->transform = (PictTransform *) malloc(sizeof (PictTransform));
+ if (!pPicture->transform)
+ return BadAlloc;
+ }
+ *pPicture->transform = *transform;
+ }
+ else
+ {
+ free(pPicture->transform);
+ pPicture->transform = NULL;
+ }
+ pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
+
+ if (pPicture->pDrawable != NULL) {
+ int result;
+ PictureScreenPtr ps = GetPictureScreen(pPicture->pDrawable->pScreen);
+
+ result = (*ps->ChangePictureTransform) (pPicture, transform);
+
+ return result;
+ }
+
+ return Success;
+}
+
+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 = RegionCreate(
+ RegionExtents(srcClientClip),
+ RegionNumRects(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:
+ 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)
+ {
+ free(pPicture->transform);
+
+ if (pPicture->pSourcePict)
+ {
+ if (pPicture->pSourcePict->type != SourcePictTypeSolidFill)
+ free(pPicture->pSourcePict->linear.stops);
+
+ free(pPicture->pSourcePict);
+ }
+
+ if (pPicture->pDrawable)
+ {
+ 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 *)dixLookupPrivateAddr
+ (&pWindow->devPrivates, PictureWindowPrivateKey);
+ *pPrev;
+ pPrev = &(*pPrev)->pNext)
+ {
+ if (*pPrev == pPicture)
+ {
+ *pPrev = pPicture->pNext;
+ break;
+ }
+ }
+ }
+ else if (pPicture->pDrawable->type == DRAWABLE_PIXMAP)
+ {
+ (*pScreen->DestroyPixmap) ((PixmapPtr)pPicture->pDrawable);
+ }
+ }
+ dixFreeObjectWithPrivates(pPicture, PRIVATE_PICTURE);
+ }
+ 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 CARD8
+ReduceCompositeOp (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst,
+ INT16 xSrc, INT16 ySrc, CARD16 width, CARD16 height)
+{
+ Bool no_src_alpha, no_dst_alpha;
+
+ /* Sampling off the edge of a RepeatNone picture introduces alpha
+ * even if the picture itself doesn't have alpha. We don't try to
+ * detect every case where we don't sample off the edge, just the
+ * simplest case where there is no transform on the source
+ * picture.
+ */
+ no_src_alpha = PICT_FORMAT_COLOR(pSrc->format) &&
+ PICT_FORMAT_A(pSrc->format) == 0 &&
+ (pSrc->repeatType != RepeatNone ||
+ (!pSrc->transform &&
+ xSrc >= 0 && ySrc >= 0 &&
+ xSrc + width <= pSrc->pDrawable->width &&
+ ySrc + height <= pSrc->pDrawable->height)) &&
+ 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, xSrc, ySrc, width, height);
+ if (op == PictOpDst)
+ return;
+
+ (*ps->Composite) (op,
+ pSrc,
+ pMask,
+ pDst,
+ xSrc,
+ ySrc,
+ xMask,
+ yMask,
+ xDst,
+ yDst,
+ width,
+ height);
+}
+
+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)
+{
+ xTriangle *tris, *tri;
+ int ntri;
+
+ if (npoints < 3)
+ return;
+ ntri = npoints - 2;
+ tris = malloc(ntri * sizeof (xTriangle));
+ if (!tris)
+ return;
+ for (tri = tris; npoints >= 3; npoints--, points++, tri++)
+ {
+ tri->p1 = points[0];
+ tri->p2 = points[1];
+ tri->p3 = points[2];
+ }
+ CompositeTriangles (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
+ free(tris);
+}
+
+void
+CompositeTriFan (CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ PictFormatPtr maskFormat,
+ INT16 xSrc,
+ INT16 ySrc,
+ int npoints,
+ xPointFixed *points)
+{
+ xTriangle *tris, *tri;
+ xPointFixed *first;
+ int ntri;
+
+ if (npoints < 3)
+ return;
+ ntri = npoints - 2;
+ tris = malloc(ntri * sizeof (xTriangle));
+ if (!tris)
+ return;
+ first = points++;
+ for (tri = tris; npoints >= 3; npoints--, points++, tri++)
+ {
+ tri->p1 = *first;
+ tri->p2 = points[0];
+ tri->p3 = points[1];
+ }
+ CompositeTriangles (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
+ free(tris);
+}
+
+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);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 22:25:52 +0000