840 lines
26 KiB
C
840 lines
26 KiB
C
/*
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* Copyright © 2008 Red Hat, Inc.
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* Partly based on code Copyright © 2000 SuSE, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Red Hat not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Red Hat makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* Red Hat DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL Red Hat
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of SuSE not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. SuSE makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Owen Taylor <otaylor@fishsoup.net>
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* Based on code by: Keith Packard
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <stdlib.h>
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#include "exa_priv.h"
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#include "mipict.h"
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#if DEBUG_GLYPH_CACHE
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#define DBG_GLYPH_CACHE(a) ErrorF a
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#else
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#define DBG_GLYPH_CACHE(a)
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#endif
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/* Width of the pixmaps we use for the caches; this should be less than
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* max texture size of the driver; this may need to actually come from
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* the driver.
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*/
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#define CACHE_PICTURE_WIDTH 1024
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/* Maximum number of glyphs we buffer on the stack before flushing
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* rendering to the mask or destination surface.
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*/
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#define GLYPH_BUFFER_SIZE 256
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typedef struct {
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PicturePtr mask;
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ExaCompositeRectRec rects[GLYPH_BUFFER_SIZE];
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int count;
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} ExaGlyphBuffer, *ExaGlyphBufferPtr;
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typedef enum {
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ExaGlyphSuccess, /* Glyph added to render buffer */
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ExaGlyphFail, /* out of memory, etc */
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ExaGlyphNeedFlush, /* would evict a glyph already in the buffer */
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} ExaGlyphCacheResult;
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void
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exaGlyphsInit(ScreenPtr pScreen)
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{
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ExaScreenPriv(pScreen);
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int i = 0;
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memset(pExaScr->glyphCaches, 0, sizeof(pExaScr->glyphCaches));
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pExaScr->glyphCaches[i].format = PICT_a8;
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pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
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16;
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i++;
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pExaScr->glyphCaches[i].format = PICT_a8;
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pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
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32;
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i++;
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pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
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pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
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16;
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i++;
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pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
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pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
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32;
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i++;
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assert(i == EXA_NUM_GLYPH_CACHES);
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for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
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pExaScr->glyphCaches[i].columns =
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CACHE_PICTURE_WIDTH / pExaScr->glyphCaches[i].glyphWidth;
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pExaScr->glyphCaches[i].size = 256;
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pExaScr->glyphCaches[i].hashSize = 557;
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}
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}
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static void
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exaUnrealizeGlyphCaches(ScreenPtr pScreen, unsigned int format)
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{
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ExaScreenPriv(pScreen);
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int i;
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for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
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ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
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if (cache->format != format)
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continue;
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if (cache->picture) {
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FreePicture((pointer) cache->picture, (XID) 0);
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cache->picture = NULL;
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}
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free(cache->hashEntries);
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cache->hashEntries = NULL;
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free(cache->glyphs);
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cache->glyphs = NULL;
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cache->glyphCount = 0;
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}
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}
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#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
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/* All caches for a single format share a single pixmap for glyph storage,
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* allowing mixing glyphs of different sizes without paying a penalty
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* for switching between mask pixmaps. (Note that for a size of font
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* right at the border between two sizes, we might be switching for almost
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* every glyph.)
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*
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* This function allocates the storage pixmap, and then fills in the
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* rest of the allocated structures for all caches with the given format.
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*/
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static Bool
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exaRealizeGlyphCaches(ScreenPtr pScreen, unsigned int format)
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{
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ExaScreenPriv(pScreen);
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int depth = PIXMAN_FORMAT_DEPTH(format);
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PictFormatPtr pPictFormat;
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PixmapPtr pPixmap;
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PicturePtr pPicture;
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CARD32 component_alpha;
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int height;
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int i;
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int error;
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pPictFormat = PictureMatchFormat(pScreen, depth, format);
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if (!pPictFormat)
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return FALSE;
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/* Compute the total vertical size needed for the format */
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height = 0;
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for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
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ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
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int rows;
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if (cache->format != format)
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continue;
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cache->yOffset = height;
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rows = (cache->size + cache->columns - 1) / cache->columns;
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height += rows * cache->glyphHeight;
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}
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/* Now allocate the pixmap and picture */
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pPixmap = (*pScreen->CreatePixmap) (pScreen,
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CACHE_PICTURE_WIDTH, height, depth, 0);
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if (!pPixmap)
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return FALSE;
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component_alpha = NeedsComponent(pPictFormat->format);
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pPicture = CreatePicture(0, &pPixmap->drawable, pPictFormat,
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CPComponentAlpha, &component_alpha, serverClient,
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&error);
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(*pScreen->DestroyPixmap) (pPixmap); /* picture holds a refcount */
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if (!pPicture)
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return FALSE;
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/* And store the picture in all the caches for the format */
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for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
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ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
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int j;
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if (cache->format != format)
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continue;
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cache->picture = pPicture;
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cache->picture->refcnt++;
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cache->hashEntries = malloc(sizeof(int) * cache->hashSize);
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cache->glyphs = malloc(sizeof(ExaCachedGlyphRec) * cache->size);
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cache->glyphCount = 0;
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if (!cache->hashEntries || !cache->glyphs)
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goto bail;
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for (j = 0; j < cache->hashSize; j++)
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cache->hashEntries[j] = -1;
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cache->evictionPosition = rand() % cache->size;
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}
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/* Each cache references the picture individually */
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FreePicture((pointer) pPicture, (XID) 0);
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return TRUE;
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bail:
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exaUnrealizeGlyphCaches(pScreen, format);
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return FALSE;
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}
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void
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exaGlyphsFini(ScreenPtr pScreen)
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{
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ExaScreenPriv(pScreen);
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int i;
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for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
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ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
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if (cache->picture)
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exaUnrealizeGlyphCaches(pScreen, cache->format);
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}
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}
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static int
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exaGlyphCacheHashLookup(ExaGlyphCachePtr cache, GlyphPtr pGlyph)
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{
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int slot;
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slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
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while (TRUE) { /* hash table can never be full */
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int entryPos = cache->hashEntries[slot];
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if (entryPos == -1)
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return -1;
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if (memcmp
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(pGlyph->sha1, cache->glyphs[entryPos].sha1,
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sizeof(pGlyph->sha1)) == 0) {
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return entryPos;
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}
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slot--;
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if (slot < 0)
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slot = cache->hashSize - 1;
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}
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}
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static void
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exaGlyphCacheHashInsert(ExaGlyphCachePtr cache, GlyphPtr pGlyph, int pos)
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{
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int slot;
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memcpy(cache->glyphs[pos].sha1, pGlyph->sha1, sizeof(pGlyph->sha1));
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slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
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while (TRUE) { /* hash table can never be full */
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if (cache->hashEntries[slot] == -1) {
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cache->hashEntries[slot] = pos;
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return;
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}
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slot--;
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if (slot < 0)
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slot = cache->hashSize - 1;
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}
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}
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static void
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exaGlyphCacheHashRemove(ExaGlyphCachePtr cache, int pos)
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{
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int slot;
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int emptiedSlot = -1;
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slot = (*(CARD32 *) cache->glyphs[pos].sha1) % cache->hashSize;
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while (TRUE) { /* hash table can never be full */
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int entryPos = cache->hashEntries[slot];
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if (entryPos == -1)
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return;
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if (entryPos == pos) {
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cache->hashEntries[slot] = -1;
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emptiedSlot = slot;
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}
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else if (emptiedSlot != -1) {
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/* See if we can move this entry into the emptied slot, we can't
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* do that if if entry would have hashed between the current position
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* and the emptied slot. (taking wrapping into account). Bad positions
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* are:
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*
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* | XXXXXXXXXX |
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* i j
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*
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* |XXX XXXX|
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* j i
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*
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* i - slot, j - emptiedSlot
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*
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* (Knuth 6.4R)
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*/
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int entrySlot =
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(*(CARD32 *) cache->glyphs[entryPos].sha1) % cache->hashSize;
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if (!((entrySlot >= slot && entrySlot < emptiedSlot) ||
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(emptiedSlot < slot &&
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(entrySlot < emptiedSlot || entrySlot >= slot)))) {
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cache->hashEntries[emptiedSlot] = entryPos;
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cache->hashEntries[slot] = -1;
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emptiedSlot = slot;
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}
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}
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slot--;
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if (slot < 0)
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slot = cache->hashSize - 1;
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}
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}
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#define CACHE_X(pos) (((pos) % cache->columns) * cache->glyphWidth)
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#define CACHE_Y(pos) (cache->yOffset + ((pos) / cache->columns) * cache->glyphHeight)
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/* The most efficient thing to way to upload the glyph to the screen
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* is to use the UploadToScreen() driver hook; this allows us to
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* pipeline glyph uploads and to avoid creating gpu backed pixmaps for
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* glyphs that we'll never use again.
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*
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* If we can't do it with UploadToScreen (because the glyph has a gpu copy,
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* etc), we fall back to CompositePicture.
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*
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* We need to damage the cache pixmap manually in either case because the damage
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* layer unwrapped the picture screen before calling exaGlyphs.
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*/
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static void
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exaGlyphCacheUploadGlyph(ScreenPtr pScreen,
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ExaGlyphCachePtr cache, int x, int y, GlyphPtr pGlyph)
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{
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ExaScreenPriv(pScreen);
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PicturePtr pGlyphPicture = GlyphPicture(pGlyph)[pScreen->myNum];
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PixmapPtr pGlyphPixmap = (PixmapPtr) pGlyphPicture->pDrawable;
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ExaPixmapPriv(pGlyphPixmap);
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PixmapPtr pCachePixmap = (PixmapPtr) cache->picture->pDrawable;
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if (!pExaScr->info->UploadToScreen || pExaScr->swappedOut ||
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pExaPixmap->accel_blocked)
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goto composite;
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/* If the glyph pixmap is already uploaded, no point in doing
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* things this way */
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if (exaPixmapHasGpuCopy(pGlyphPixmap))
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goto composite;
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/* UploadToScreen only works if bpp match */
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if (pGlyphPixmap->drawable.bitsPerPixel !=
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pCachePixmap->drawable.bitsPerPixel)
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goto composite;
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if (pExaScr->do_migration) {
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ExaMigrationRec pixmaps[1];
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/* cache pixmap must have a gpu copy. */
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pixmaps[0].as_dst = TRUE;
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pixmaps[0].as_src = FALSE;
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pixmaps[0].pPix = pCachePixmap;
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pixmaps[0].pReg = NULL;
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exaDoMigration(pixmaps, 1, TRUE);
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}
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if (!exaPixmapHasGpuCopy(pCachePixmap))
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goto composite;
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/* x,y are in pixmap coordinates, no need for cache{X,Y}off */
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if (pExaScr->info->UploadToScreen(pCachePixmap,
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x,
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y,
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pGlyph->info.width,
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pGlyph->info.height,
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(char *) pExaPixmap->sys_ptr,
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pExaPixmap->sys_pitch))
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goto damage;
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composite:
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CompositePicture(PictOpSrc,
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pGlyphPicture,
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None,
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cache->picture,
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0, 0, 0, 0, x, y, pGlyph->info.width, pGlyph->info.height);
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damage:
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/* The cache pixmap isn't a window, so no need to offset coordinates. */
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exaPixmapDirty(pCachePixmap,
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x, y, x + cache->glyphWidth, y + cache->glyphHeight);
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}
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static ExaGlyphCacheResult
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exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
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ExaGlyphCachePtr cache,
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ExaGlyphBufferPtr buffer,
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GlyphPtr pGlyph,
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PicturePtr pSrc,
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PicturePtr pDst,
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INT16 xSrc,
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INT16 ySrc,
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INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst)
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{
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ExaCompositeRectPtr rect;
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int pos;
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int x, y;
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if (buffer->mask && buffer->mask != cache->picture)
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return ExaGlyphNeedFlush;
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if (!cache->picture) {
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if (!exaRealizeGlyphCaches(pScreen, cache->format))
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return ExaGlyphFail;
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}
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DBG_GLYPH_CACHE(("(%d,%d,%s): buffering glyph %lx\n",
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cache->glyphWidth, cache->glyphHeight,
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cache->format == PICT_a8 ? "A" : "ARGB",
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(long) *(CARD32 *) pGlyph->sha1));
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pos = exaGlyphCacheHashLookup(cache, pGlyph);
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if (pos != -1) {
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DBG_GLYPH_CACHE((" found existing glyph at %d\n", pos));
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x = CACHE_X(pos);
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y = CACHE_Y(pos);
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}
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else {
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if (cache->glyphCount < cache->size) {
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/* Space remaining; we fill from the start */
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pos = cache->glyphCount;
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x = CACHE_X(pos);
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y = CACHE_Y(pos);
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cache->glyphCount++;
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DBG_GLYPH_CACHE((" storing glyph in free space at %d\n", pos));
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exaGlyphCacheHashInsert(cache, pGlyph, pos);
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}
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else {
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/* Need to evict an entry. We have to see if any glyphs
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* already in the output buffer were at this position in
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* the cache
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*/
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pos = cache->evictionPosition;
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x = CACHE_X(pos);
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y = CACHE_Y(pos);
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DBG_GLYPH_CACHE((" evicting glyph at %d\n", pos));
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if (buffer->count) {
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int i;
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for (i = 0; i < buffer->count; i++) {
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if (pSrc ?
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(buffer->rects[i].xMask == x &&
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buffer->rects[i].yMask ==
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y) : (buffer->rects[i].xSrc == x &&
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buffer->rects[i].ySrc == y)) {
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DBG_GLYPH_CACHE((" must flush buffer\n"));
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return ExaGlyphNeedFlush;
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}
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}
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}
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/* OK, we're all set, swap in the new glyph */
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exaGlyphCacheHashRemove(cache, pos);
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exaGlyphCacheHashInsert(cache, pGlyph, pos);
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/* And pick a new eviction position */
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cache->evictionPosition = rand() % cache->size;
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}
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exaGlyphCacheUploadGlyph(pScreen, cache, x, y, pGlyph);
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}
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buffer->mask = cache->picture;
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rect = &buffer->rects[buffer->count];
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if (pSrc) {
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rect->xSrc = xSrc;
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rect->ySrc = ySrc;
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rect->xMask = x;
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rect->yMask = y;
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}
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else {
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rect->xSrc = x;
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rect->ySrc = y;
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rect->xMask = 0;
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rect->yMask = 0;
|
|
}
|
|
|
|
rect->pDst = pDst;
|
|
rect->xDst = xDst;
|
|
rect->yDst = yDst;
|
|
rect->width = pGlyph->info.width;
|
|
rect->height = pGlyph->info.height;
|
|
|
|
buffer->count++;
|
|
|
|
return ExaGlyphSuccess;
|
|
}
|
|
|
|
#undef CACHE_X
|
|
#undef CACHE_Y
|
|
|
|
static ExaGlyphCacheResult
|
|
exaBufferGlyph(ScreenPtr pScreen,
|
|
ExaGlyphBufferPtr buffer,
|
|
GlyphPtr pGlyph,
|
|
PicturePtr pSrc,
|
|
PicturePtr pDst,
|
|
INT16 xSrc,
|
|
INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst)
|
|
{
|
|
ExaScreenPriv(pScreen);
|
|
unsigned int format = (GlyphPicture(pGlyph)[pScreen->myNum])->format;
|
|
int width = pGlyph->info.width;
|
|
int height = pGlyph->info.height;
|
|
ExaCompositeRectPtr rect;
|
|
PicturePtr mask;
|
|
int i;
|
|
|
|
if (buffer->count == GLYPH_BUFFER_SIZE)
|
|
return ExaGlyphNeedFlush;
|
|
|
|
if (PICT_FORMAT_BPP(format) == 1)
|
|
format = PICT_a8;
|
|
|
|
for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
|
|
ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
|
|
|
|
if (format == cache->format &&
|
|
width <= cache->glyphWidth && height <= cache->glyphHeight) {
|
|
ExaGlyphCacheResult result = exaGlyphCacheBufferGlyph(pScreen,
|
|
&pExaScr->
|
|
glyphCaches
|
|
[i],
|
|
buffer,
|
|
pGlyph,
|
|
pSrc,
|
|
pDst,
|
|
xSrc, ySrc,
|
|
xMask, yMask,
|
|
xDst, yDst);
|
|
|
|
switch (result) {
|
|
case ExaGlyphFail:
|
|
break;
|
|
case ExaGlyphSuccess:
|
|
case ExaGlyphNeedFlush:
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Couldn't find the glyph in the cache, use the glyph picture directly */
|
|
|
|
mask = GlyphPicture(pGlyph)[pScreen->myNum];
|
|
if (buffer->mask && buffer->mask != mask)
|
|
return ExaGlyphNeedFlush;
|
|
|
|
buffer->mask = mask;
|
|
|
|
rect = &buffer->rects[buffer->count];
|
|
rect->xSrc = xSrc;
|
|
rect->ySrc = ySrc;
|
|
rect->xMask = xMask;
|
|
rect->yMask = yMask;
|
|
rect->xDst = xDst;
|
|
rect->yDst = yDst;
|
|
rect->width = width;
|
|
rect->height = height;
|
|
|
|
buffer->count++;
|
|
|
|
return ExaGlyphSuccess;
|
|
}
|
|
|
|
static void
|
|
exaGlyphsToMask(PicturePtr pMask, ExaGlyphBufferPtr buffer)
|
|
{
|
|
exaCompositeRects(PictOpAdd, buffer->mask, NULL, pMask,
|
|
buffer->count, buffer->rects);
|
|
|
|
buffer->count = 0;
|
|
buffer->mask = NULL;
|
|
}
|
|
|
|
static void
|
|
exaGlyphsToDst(PicturePtr pSrc, PicturePtr pDst, ExaGlyphBufferPtr buffer)
|
|
{
|
|
exaCompositeRects(PictOpOver, pSrc, buffer->mask, pDst, buffer->count,
|
|
buffer->rects);
|
|
|
|
buffer->count = 0;
|
|
buffer->mask = NULL;
|
|
}
|
|
|
|
/* Cut and paste from render/glyph.c - probably should export it instead */
|
|
static void
|
|
GlyphExtents(int nlist, GlyphListPtr list, GlyphPtr * glyphs, BoxPtr extents)
|
|
{
|
|
int x1, x2, y1, y2;
|
|
int n;
|
|
GlyphPtr glyph;
|
|
int x, y;
|
|
|
|
x = 0;
|
|
y = 0;
|
|
extents->x1 = MAXSHORT;
|
|
extents->x2 = MINSHORT;
|
|
extents->y1 = MAXSHORT;
|
|
extents->y2 = MINSHORT;
|
|
while (nlist--) {
|
|
x += list->xOff;
|
|
y += list->yOff;
|
|
n = list->len;
|
|
list++;
|
|
while (n--) {
|
|
glyph = *glyphs++;
|
|
x1 = x - glyph->info.x;
|
|
if (x1 < MINSHORT)
|
|
x1 = MINSHORT;
|
|
y1 = y - glyph->info.y;
|
|
if (y1 < MINSHORT)
|
|
y1 = MINSHORT;
|
|
x2 = x1 + glyph->info.width;
|
|
if (x2 > MAXSHORT)
|
|
x2 = MAXSHORT;
|
|
y2 = y1 + glyph->info.height;
|
|
if (y2 > MAXSHORT)
|
|
y2 = MAXSHORT;
|
|
if (x1 < extents->x1)
|
|
extents->x1 = x1;
|
|
if (x2 > extents->x2)
|
|
extents->x2 = x2;
|
|
if (y1 < extents->y1)
|
|
extents->y1 = y1;
|
|
if (y2 > extents->y2)
|
|
extents->y2 = y2;
|
|
x += glyph->info.xOff;
|
|
y += glyph->info.yOff;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
exaGlyphs(CARD8 op,
|
|
PicturePtr pSrc,
|
|
PicturePtr pDst,
|
|
PictFormatPtr maskFormat,
|
|
INT16 xSrc,
|
|
INT16 ySrc, int nlist, GlyphListPtr list, GlyphPtr * glyphs)
|
|
{
|
|
PixmapPtr pMaskPixmap = 0;
|
|
PicturePtr pMask = NULL;
|
|
ScreenPtr pScreen = pDst->pDrawable->pScreen;
|
|
int width = 0, height = 0;
|
|
int x, y;
|
|
int first_xOff = list->xOff, first_yOff = list->yOff;
|
|
int n;
|
|
GlyphPtr glyph;
|
|
int error;
|
|
BoxRec extents = { 0, 0, 0, 0 };
|
|
CARD32 component_alpha;
|
|
ExaGlyphBuffer buffer;
|
|
|
|
if (maskFormat) {
|
|
ExaScreenPriv(pScreen);
|
|
GCPtr pGC;
|
|
xRectangle rect;
|
|
|
|
GlyphExtents(nlist, list, glyphs, &extents);
|
|
|
|
if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
|
|
return;
|
|
width = extents.x2 - extents.x1;
|
|
height = extents.y2 - extents.y1;
|
|
|
|
if (maskFormat->depth == 1) {
|
|
PictFormatPtr a8Format = PictureMatchFormat(pScreen, 8, PICT_a8);
|
|
|
|
if (a8Format)
|
|
maskFormat = a8Format;
|
|
}
|
|
|
|
pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
|
|
maskFormat->depth,
|
|
CREATE_PIXMAP_USAGE_SCRATCH);
|
|
if (!pMaskPixmap)
|
|
return;
|
|
component_alpha = NeedsComponent(maskFormat->format);
|
|
pMask = CreatePicture(0, &pMaskPixmap->drawable,
|
|
maskFormat, CPComponentAlpha, &component_alpha,
|
|
serverClient, &error);
|
|
if (!pMask ||
|
|
(!component_alpha && pExaScr->info->CheckComposite &&
|
|
!(*pExaScr->info->CheckComposite) (PictOpAdd, pSrc, NULL, pMask)))
|
|
{
|
|
PictFormatPtr argbFormat;
|
|
|
|
(*pScreen->DestroyPixmap) (pMaskPixmap);
|
|
|
|
if (!pMask)
|
|
return;
|
|
|
|
/* The driver can't seem to composite to a8, let's try argb (but
|
|
* without component-alpha) */
|
|
FreePicture((pointer) pMask, (XID) 0);
|
|
|
|
argbFormat = PictureMatchFormat(pScreen, 32, PICT_a8r8g8b8);
|
|
|
|
if (argbFormat)
|
|
maskFormat = argbFormat;
|
|
|
|
pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
|
|
maskFormat->depth,
|
|
CREATE_PIXMAP_USAGE_SCRATCH);
|
|
if (!pMaskPixmap)
|
|
return;
|
|
|
|
pMask = CreatePicture(0, &pMaskPixmap->drawable, maskFormat, 0, 0,
|
|
serverClient, &error);
|
|
if (!pMask) {
|
|
(*pScreen->DestroyPixmap) (pMaskPixmap);
|
|
return;
|
|
}
|
|
}
|
|
pGC = GetScratchGC(pMaskPixmap->drawable.depth, pScreen);
|
|
ValidateGC(&pMaskPixmap->drawable, pGC);
|
|
rect.x = 0;
|
|
rect.y = 0;
|
|
rect.width = width;
|
|
rect.height = height;
|
|
(*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect);
|
|
FreeScratchGC(pGC);
|
|
x = -extents.x1;
|
|
y = -extents.y1;
|
|
}
|
|
else {
|
|
x = 0;
|
|
y = 0;
|
|
}
|
|
buffer.count = 0;
|
|
buffer.mask = NULL;
|
|
while (nlist--) {
|
|
x += list->xOff;
|
|
y += list->yOff;
|
|
n = list->len;
|
|
while (n--) {
|
|
glyph = *glyphs++;
|
|
|
|
if (glyph->info.width > 0 && glyph->info.height > 0) {
|
|
/* pGlyph->info.{x,y} compensate for empty space in the glyph. */
|
|
if (maskFormat) {
|
|
if (exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask,
|
|
0, 0, 0, 0, x - glyph->info.x,
|
|
y - glyph->info.y) ==
|
|
ExaGlyphNeedFlush) {
|
|
exaGlyphsToMask(pMask, &buffer);
|
|
exaBufferGlyph(pScreen, &buffer, glyph, NULL, pMask,
|
|
0, 0, 0, 0, x - glyph->info.x,
|
|
y - glyph->info.y);
|
|
}
|
|
}
|
|
else {
|
|
if (exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst,
|
|
xSrc + (x - glyph->info.x) - first_xOff,
|
|
ySrc + (y - glyph->info.y) - first_yOff,
|
|
0, 0, x - glyph->info.x,
|
|
y - glyph->info.y)
|
|
== ExaGlyphNeedFlush) {
|
|
exaGlyphsToDst(pSrc, pDst, &buffer);
|
|
exaBufferGlyph(pScreen, &buffer, glyph, pSrc, pDst,
|
|
xSrc + (x - glyph->info.x) - first_xOff,
|
|
ySrc + (y - glyph->info.y) - first_yOff,
|
|
0, 0, x - glyph->info.x,
|
|
y - glyph->info.y);
|
|
}
|
|
}
|
|
}
|
|
|
|
x += glyph->info.xOff;
|
|
y += glyph->info.yOff;
|
|
}
|
|
list++;
|
|
}
|
|
|
|
if (buffer.count) {
|
|
if (maskFormat)
|
|
exaGlyphsToMask(pMask, &buffer);
|
|
else
|
|
exaGlyphsToDst(pSrc, pDst, &buffer);
|
|
}
|
|
|
|
if (maskFormat) {
|
|
x = extents.x1;
|
|
y = extents.y1;
|
|
CompositePicture(op,
|
|
pSrc,
|
|
pMask,
|
|
pDst,
|
|
xSrc + x - first_xOff,
|
|
ySrc + y - first_yOff, 0, 0, x, y, width, height);
|
|
FreePicture((pointer) pMask, (XID) 0);
|
|
(*pScreen->DestroyPixmap) (pMaskPixmap);
|
|
}
|
|
}
|