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authormarha <marha@users.sourceforge.net>2012-03-23 10:05:55 +0100
committermarha <marha@users.sourceforge.net>2012-03-23 10:05:55 +0100
commit0f834b91a4768673833ab4917e87d86c237bb1a6 (patch)
tree363489504ed4b2d360259b8de4c9e392918e5d02 /xorg-server/exa/exa_glyphs.c
parentfc72edebf875378459368c5383d9023730cbca54 (diff)
downloadvcxsrv-0f834b91a4768673833ab4917e87d86c237bb1a6.tar.gz
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libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git update
23 Mar 2012
Diffstat (limited to 'xorg-server/exa/exa_glyphs.c')
-rw-r--r--xorg-server/exa/exa_glyphs.c1702
1 files changed, 839 insertions, 863 deletions
diff --git a/xorg-server/exa/exa_glyphs.c b/xorg-server/exa/exa_glyphs.c
index 15ef61b1e..2538bce01 100644
--- a/xorg-server/exa/exa_glyphs.c
+++ b/xorg-server/exa/exa_glyphs.c
@@ -1,863 +1,839 @@
-/*
- * Copyright © 2008 Red Hat, Inc.
- * Partly based on code 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 Red Hat not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. Red Hat makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * Red Hat DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL Red Hat
- * 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.
- *
- * 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: Owen Taylor <otaylor@fishsoup.net>
- * Based on code by: Keith Packard
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdlib.h>
-
-#include "exa_priv.h"
-
-#include "mipict.h"
-
-#if DEBUG_GLYPH_CACHE
-#define DBG_GLYPH_CACHE(a) ErrorF a
-#else
-#define DBG_GLYPH_CACHE(a)
-#endif
-
-/* Width of the pixmaps we use for the caches; this should be less than
- * max texture size of the driver; this may need to actually come from
- * the driver.
- */
-#define CACHE_PICTURE_WIDTH 1024
-
-/* Maximum number of glyphs we buffer on the stack before flushing
- * rendering to the mask or destination surface.
- */
-#define GLYPH_BUFFER_SIZE 256
-
-typedef struct {
- PicturePtr mask;
- ExaCompositeRectRec rects[GLYPH_BUFFER_SIZE];
- int count;
-} ExaGlyphBuffer, *ExaGlyphBufferPtr;
-
-typedef enum {
- ExaGlyphSuccess, /* Glyph added to render buffer */
- ExaGlyphFail, /* out of memory, etc */
- ExaGlyphNeedFlush, /* would evict a glyph already in the buffer */
-} ExaGlyphCacheResult;
-
-void
-exaGlyphsInit(ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
- int i = 0;
-
- memset(pExaScr->glyphCaches, 0, sizeof(pExaScr->glyphCaches));
-
- pExaScr->glyphCaches[i].format = PICT_a8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 16;
- i++;
- pExaScr->glyphCaches[i].format = PICT_a8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 32;
- i++;
- pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 16;
- i++;
- pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
- pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight = 32;
- i++;
-
- assert(i == EXA_NUM_GLYPH_CACHES);
-
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- pExaScr->glyphCaches[i].columns = CACHE_PICTURE_WIDTH / pExaScr->glyphCaches[i].glyphWidth;
- pExaScr->glyphCaches[i].size = 256;
- pExaScr->glyphCaches[i].hashSize = 557;
- }
-}
-
-static void
-exaUnrealizeGlyphCaches(ScreenPtr pScreen,
- unsigned int format)
-{
- ExaScreenPriv(pScreen);
- int i;
-
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
-
- if (cache->format != format)
- continue;
-
- if (cache->picture) {
- FreePicture ((pointer) cache->picture, (XID) 0);
- cache->picture = NULL;
- }
-
- free(cache->hashEntries);
- cache->hashEntries = NULL;
-
- free(cache->glyphs);
- cache->glyphs = NULL;
- cache->glyphCount = 0;
- }
-}
-
-#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
-
-/* All caches for a single format share a single pixmap for glyph storage,
- * allowing mixing glyphs of different sizes without paying a penalty
- * for switching between mask pixmaps. (Note that for a size of font
- * right at the border between two sizes, we might be switching for almost
- * every glyph.)
- *
- * This function allocates the storage pixmap, and then fills in the
- * rest of the allocated structures for all caches with the given format.
- */
-static Bool
-exaRealizeGlyphCaches(ScreenPtr pScreen,
- unsigned int format)
-{
- ExaScreenPriv(pScreen);
-
- int depth = PIXMAN_FORMAT_DEPTH(format);
- PictFormatPtr pPictFormat;
- PixmapPtr pPixmap;
- PicturePtr pPicture;
- CARD32 component_alpha;
- int height;
- int i;
- int error;
-
- pPictFormat = PictureMatchFormat(pScreen, depth, format);
- if (!pPictFormat)
- return FALSE;
-
- /* Compute the total vertical size needed for the format */
-
- height = 0;
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
- int rows;
-
- if (cache->format != format)
- continue;
-
- cache->yOffset = height;
-
- rows = (cache->size + cache->columns - 1) / cache->columns;
- height += rows * cache->glyphHeight;
- }
-
- /* Now allocate the pixmap and picture */
- pPixmap = (*pScreen->CreatePixmap) (pScreen,
- CACHE_PICTURE_WIDTH,
- height, depth, 0);
- if (!pPixmap)
- return FALSE;
-
- component_alpha = NeedsComponent(pPictFormat->format);
- pPicture = CreatePicture(0, &pPixmap->drawable, pPictFormat,
- CPComponentAlpha, &component_alpha, serverClient,
- &error);
-
- (*pScreen->DestroyPixmap) (pPixmap); /* picture holds a refcount */
-
- if (!pPicture)
- return FALSE;
-
- /* And store the picture in all the caches for the format */
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
- int j;
-
- if (cache->format != format)
- continue;
-
- cache->picture = pPicture;
- cache->picture->refcnt++;
- cache->hashEntries = malloc(sizeof(int) * cache->hashSize);
- cache->glyphs = malloc(sizeof(ExaCachedGlyphRec) * cache->size);
- cache->glyphCount = 0;
-
- if (!cache->hashEntries || !cache->glyphs)
- goto bail;
-
- for (j = 0; j < cache->hashSize; j++)
- cache->hashEntries[j] = -1;
-
- cache->evictionPosition = rand() % cache->size;
- }
-
- /* Each cache references the picture individually */
- FreePicture ((pointer) pPicture, (XID) 0);
- return TRUE;
-
-bail:
- exaUnrealizeGlyphCaches(pScreen, format);
- return FALSE;
-}
-
-void
-exaGlyphsFini (ScreenPtr pScreen)
-{
- ExaScreenPriv(pScreen);
- int i;
-
- for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
- ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
-
- if (cache->picture)
- exaUnrealizeGlyphCaches(pScreen, cache->format);
- }
-}
-
-static int
-exaGlyphCacheHashLookup(ExaGlyphCachePtr cache,
- GlyphPtr pGlyph)
-{
- int slot;
-
- slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
-
- while (TRUE) { /* hash table can never be full */
- int entryPos = cache->hashEntries[slot];
- if (entryPos == -1)
- return -1;
-
- if (memcmp(pGlyph->sha1, cache->glyphs[entryPos].sha1, sizeof(pGlyph->sha1)) == 0){
- return entryPos;
- }
-
- slot--;
- if (slot < 0)
- slot = cache->hashSize - 1;
- }
-}
-
-static void
-exaGlyphCacheHashInsert(ExaGlyphCachePtr cache,
- GlyphPtr pGlyph,
- int pos)
-{
- int slot;
-
- memcpy(cache->glyphs[pos].sha1, pGlyph->sha1, sizeof(pGlyph->sha1));
-
- slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
-
- while (TRUE) { /* hash table can never be full */
- if (cache->hashEntries[slot] == -1) {
- cache->hashEntries[slot] = pos;
- return;
- }
-
- slot--;
- if (slot < 0)
- slot = cache->hashSize - 1;
- }
-}
-
-static void
-exaGlyphCacheHashRemove(ExaGlyphCachePtr cache,
- int pos)
-{
- int slot;
- int emptiedSlot = -1;
-
- slot = (*(CARD32 *) cache->glyphs[pos].sha1) % cache->hashSize;
-
- while (TRUE) { /* hash table can never be full */
- int entryPos = cache->hashEntries[slot];
-
- if (entryPos == -1)
- return;
-
- if (entryPos == pos) {
- cache->hashEntries[slot] = -1;
- emptiedSlot = slot;
- } else if (emptiedSlot != -1) {
- /* See if we can move this entry into the emptied slot, we can't
- * do that if if entry would have hashed between the current position
- * and the emptied slot. (taking wrapping into account). Bad positions
- * are:
- *
- * | XXXXXXXXXX |
- * i j
- *
- * |XXX XXXX|
- * j i
- *
- * i - slot, j - emptiedSlot
- *
- * (Knuth 6.4R)
- */
-
- int entrySlot = (*(CARD32 *) cache->glyphs[entryPos].sha1) % cache->hashSize;
-
- if (!((entrySlot >= slot && entrySlot < emptiedSlot) ||
- (emptiedSlot < slot && (entrySlot < emptiedSlot || entrySlot >= slot))))
- {
- cache->hashEntries[emptiedSlot] = entryPos;
- cache->hashEntries[slot] = -1;
- emptiedSlot = slot;
- }
- }
-
- slot--;
- if (slot < 0)
- slot = cache->hashSize - 1;
- }
-}
-
-#define CACHE_X(pos) (((pos) % cache->columns) * cache->glyphWidth)
-#define CACHE_Y(pos) (cache->yOffset + ((pos) / cache->columns) * cache->glyphHeight)
-
-/* The most efficient thing to way to upload the glyph to the screen
- * is to use the UploadToScreen() driver hook; this allows us to
- * pipeline glyph uploads and to avoid creating gpu backed pixmaps for
- * glyphs that we'll never use again.
- *
- * If we can't do it with UploadToScreen (because the glyph has a gpu copy,
- * etc), we fall back to CompositePicture.
- *
- * We need to damage the cache pixmap manually in either case because the damage
- * layer unwrapped the picture screen before calling exaGlyphs.
- */
-static void
-exaGlyphCacheUploadGlyph(ScreenPtr pScreen,
- ExaGlyphCachePtr cache,
- int x,
- int y,
- GlyphPtr pGlyph)
-{
- ExaScreenPriv(pScreen);
- PicturePtr pGlyphPicture = GlyphPicture(pGlyph)[pScreen->myNum];
- PixmapPtr pGlyphPixmap = (PixmapPtr)pGlyphPicture->pDrawable;
- ExaPixmapPriv(pGlyphPixmap);
- PixmapPtr pCachePixmap = (PixmapPtr)cache->picture->pDrawable;
-
- if (!pExaScr->info->UploadToScreen || pExaScr->swappedOut || pExaPixmap->accel_blocked)
- goto composite;
-
- /* If the glyph pixmap is already uploaded, no point in doing
- * things this way */
- if (exaPixmapHasGpuCopy(pGlyphPixmap))
- goto composite;
-
- /* UploadToScreen only works if bpp match */
- if (pGlyphPixmap->drawable.bitsPerPixel != pCachePixmap->drawable.bitsPerPixel)
- goto composite;
-
- if (pExaScr->do_migration) {
- ExaMigrationRec pixmaps[1];
-
- /* cache pixmap must have a gpu copy. */
- pixmaps[0].as_dst = TRUE;
- pixmaps[0].as_src = FALSE;
- pixmaps[0].pPix = pCachePixmap;
- pixmaps[0].pReg = NULL;
- exaDoMigration (pixmaps, 1, TRUE);
- }
-
- if (!exaPixmapHasGpuCopy(pCachePixmap))
- goto composite;
-
- /* x,y are in pixmap coordinates, no need for cache{X,Y}off */
- if (pExaScr->info->UploadToScreen(pCachePixmap,
- x,
- y,
- pGlyph->info.width,
- pGlyph->info.height,
- (char *)pExaPixmap->sys_ptr,
- pExaPixmap->sys_pitch))
- goto damage;
-
-composite:
- CompositePicture (PictOpSrc,
- pGlyphPicture,
- None,
- cache->picture,
- 0, 0,
- 0, 0,
- x,
- y,
- pGlyph->info.width,
- pGlyph->info.height);
-
-damage:
- /* The cache pixmap isn't a window, so no need to offset coordinates. */
- exaPixmapDirty (pCachePixmap,
- x,
- y,
- x + cache->glyphWidth,
- y + cache->glyphHeight);
-}
-
-static ExaGlyphCacheResult
-exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
- ExaGlyphCachePtr cache,
- ExaGlyphBufferPtr buffer,
- GlyphPtr pGlyph,
- PicturePtr pSrc,
- PicturePtr pDst,
- INT16 xSrc,
- INT16 ySrc,
- INT16 xMask,
- INT16 yMask,
- INT16 xDst,
- INT16 yDst)
-{
- ExaCompositeRectPtr rect;
- int pos;
- int x, y;
-
- if (buffer->mask && buffer->mask != cache->picture)
- return ExaGlyphNeedFlush;
-
- if (!cache->picture) {
- if (!exaRealizeGlyphCaches(pScreen, cache->format))
- return ExaGlyphFail;
- }
-
- DBG_GLYPH_CACHE(("(%d,%d,%s): buffering glyph %lx\n",
- cache->glyphWidth, cache->glyphHeight, cache->format == PICT_a8 ? "A" : "ARGB",
- (long)*(CARD32 *) pGlyph->sha1));
-
- pos = exaGlyphCacheHashLookup(cache, pGlyph);
- if (pos != -1) {
- DBG_GLYPH_CACHE((" found existing glyph at %d\n", pos));
- x = CACHE_X(pos);
- y = CACHE_Y(pos);
- } else {
- if (cache->glyphCount < cache->size) {
- /* Space remaining; we fill from the start */
- pos = cache->glyphCount;
- x = CACHE_X(pos);
- y = CACHE_Y(pos);
- cache->glyphCount++;
- DBG_GLYPH_CACHE((" storing glyph in free space at %d\n", pos));
-
- exaGlyphCacheHashInsert(cache, pGlyph, pos);
-
- } else {
- /* Need to evict an entry. We have to see if any glyphs
- * already in the output buffer were at this position in
- * the cache
- */
- pos = cache->evictionPosition;
- x = CACHE_X(pos);
- y = CACHE_Y(pos);
- DBG_GLYPH_CACHE((" evicting glyph at %d\n", pos));
- if (buffer->count) {
- int i;
-
- for (i = 0; i < buffer->count; i++) {
- if (pSrc ?
- (buffer->rects[i].xMask == x && buffer->rects[i].yMask == y) :
- (buffer->rects[i].xSrc == x && buffer->rects[i].ySrc == y)) {
- DBG_GLYPH_CACHE((" must flush buffer\n"));
- return ExaGlyphNeedFlush;
- }
- }
- }
-
- /* OK, we're all set, swap in the new glyph */
- exaGlyphCacheHashRemove(cache, pos);
- exaGlyphCacheHashInsert(cache, pGlyph, pos);
-
- /* And pick a new eviction position */
- cache->evictionPosition = rand() % cache->size;
- }
-
- exaGlyphCacheUploadGlyph(pScreen, cache, x, y, pGlyph);
- }
-
- buffer->mask = cache->picture;
-
- rect = &buffer->rects[buffer->count];
-
- if (pSrc)
- {
- rect->xSrc = xSrc;
- rect->ySrc = ySrc;
- rect->xMask = x;
- rect->yMask = y;
- }
- else
- {
- rect->xSrc = x;
- rect->ySrc = y;
- rect->xMask = 0;
- 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);
- }
-}
+/*
+ * Copyright © 2008 Red Hat, Inc.
+ * Partly based on code 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 Red Hat not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. Red Hat makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * Red Hat DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL Red Hat
+ * 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.
+ *
+ * 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: Owen Taylor <otaylor@fishsoup.net>
+ * Based on code by: Keith Packard
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdlib.h>
+
+#include "exa_priv.h"
+
+#include "mipict.h"
+
+#if DEBUG_GLYPH_CACHE
+#define DBG_GLYPH_CACHE(a) ErrorF a
+#else
+#define DBG_GLYPH_CACHE(a)
+#endif
+
+/* Width of the pixmaps we use for the caches; this should be less than
+ * max texture size of the driver; this may need to actually come from
+ * the driver.
+ */
+#define CACHE_PICTURE_WIDTH 1024
+
+/* Maximum number of glyphs we buffer on the stack before flushing
+ * rendering to the mask or destination surface.
+ */
+#define GLYPH_BUFFER_SIZE 256
+
+typedef struct {
+ PicturePtr mask;
+ ExaCompositeRectRec rects[GLYPH_BUFFER_SIZE];
+ int count;
+} ExaGlyphBuffer, *ExaGlyphBufferPtr;
+
+typedef enum {
+ ExaGlyphSuccess, /* Glyph added to render buffer */
+ ExaGlyphFail, /* out of memory, etc */
+ ExaGlyphNeedFlush, /* would evict a glyph already in the buffer */
+} ExaGlyphCacheResult;
+
+void
+exaGlyphsInit(ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+ int i = 0;
+
+ memset(pExaScr->glyphCaches, 0, sizeof(pExaScr->glyphCaches));
+
+ pExaScr->glyphCaches[i].format = PICT_a8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
+ 16;
+ i++;
+ pExaScr->glyphCaches[i].format = PICT_a8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
+ 32;
+ i++;
+ pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
+ 16;
+ i++;
+ pExaScr->glyphCaches[i].format = PICT_a8r8g8b8;
+ pExaScr->glyphCaches[i].glyphWidth = pExaScr->glyphCaches[i].glyphHeight =
+ 32;
+ i++;
+
+ assert(i == EXA_NUM_GLYPH_CACHES);
+
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ pExaScr->glyphCaches[i].columns =
+ CACHE_PICTURE_WIDTH / pExaScr->glyphCaches[i].glyphWidth;
+ pExaScr->glyphCaches[i].size = 256;
+ pExaScr->glyphCaches[i].hashSize = 557;
+ }
+}
+
+static void
+exaUnrealizeGlyphCaches(ScreenPtr pScreen, unsigned int format)
+{
+ ExaScreenPriv(pScreen);
+ int i;
+
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+
+ if (cache->format != format)
+ continue;
+
+ if (cache->picture) {
+ FreePicture((pointer) cache->picture, (XID) 0);
+ cache->picture = NULL;
+ }
+
+ free(cache->hashEntries);
+ cache->hashEntries = NULL;
+
+ free(cache->glyphs);
+ cache->glyphs = NULL;
+ cache->glyphCount = 0;
+ }
+}
+
+#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
+
+/* All caches for a single format share a single pixmap for glyph storage,
+ * allowing mixing glyphs of different sizes without paying a penalty
+ * for switching between mask pixmaps. (Note that for a size of font
+ * right at the border between two sizes, we might be switching for almost
+ * every glyph.)
+ *
+ * This function allocates the storage pixmap, and then fills in the
+ * rest of the allocated structures for all caches with the given format.
+ */
+static Bool
+exaRealizeGlyphCaches(ScreenPtr pScreen, unsigned int format)
+{
+ ExaScreenPriv(pScreen);
+
+ int depth = PIXMAN_FORMAT_DEPTH(format);
+ PictFormatPtr pPictFormat;
+ PixmapPtr pPixmap;
+ PicturePtr pPicture;
+ CARD32 component_alpha;
+ int height;
+ int i;
+ int error;
+
+ pPictFormat = PictureMatchFormat(pScreen, depth, format);
+ if (!pPictFormat)
+ return FALSE;
+
+ /* Compute the total vertical size needed for the format */
+
+ height = 0;
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+ int rows;
+
+ if (cache->format != format)
+ continue;
+
+ cache->yOffset = height;
+
+ rows = (cache->size + cache->columns - 1) / cache->columns;
+ height += rows * cache->glyphHeight;
+ }
+
+ /* Now allocate the pixmap and picture */
+ pPixmap = (*pScreen->CreatePixmap) (pScreen,
+ CACHE_PICTURE_WIDTH, height, depth, 0);
+ if (!pPixmap)
+ return FALSE;
+
+ component_alpha = NeedsComponent(pPictFormat->format);
+ pPicture = CreatePicture(0, &pPixmap->drawable, pPictFormat,
+ CPComponentAlpha, &component_alpha, serverClient,
+ &error);
+
+ (*pScreen->DestroyPixmap) (pPixmap); /* picture holds a refcount */
+
+ if (!pPicture)
+ return FALSE;
+
+ /* And store the picture in all the caches for the format */
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+ int j;
+
+ if (cache->format != format)
+ continue;
+
+ cache->picture = pPicture;
+ cache->picture->refcnt++;
+ cache->hashEntries = malloc(sizeof(int) * cache->hashSize);
+ cache->glyphs = malloc(sizeof(ExaCachedGlyphRec) * cache->size);
+ cache->glyphCount = 0;
+
+ if (!cache->hashEntries || !cache->glyphs)
+ goto bail;
+
+ for (j = 0; j < cache->hashSize; j++)
+ cache->hashEntries[j] = -1;
+
+ cache->evictionPosition = rand() % cache->size;
+ }
+
+ /* Each cache references the picture individually */
+ FreePicture((pointer) pPicture, (XID) 0);
+ return TRUE;
+
+ bail:
+ exaUnrealizeGlyphCaches(pScreen, format);
+ return FALSE;
+}
+
+void
+exaGlyphsFini(ScreenPtr pScreen)
+{
+ ExaScreenPriv(pScreen);
+ int i;
+
+ for (i = 0; i < EXA_NUM_GLYPH_CACHES; i++) {
+ ExaGlyphCachePtr cache = &pExaScr->glyphCaches[i];
+
+ if (cache->picture)
+ exaUnrealizeGlyphCaches(pScreen, cache->format);
+ }
+}
+
+static int
+exaGlyphCacheHashLookup(ExaGlyphCachePtr cache, GlyphPtr pGlyph)
+{
+ int slot;
+
+ slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
+
+ while (TRUE) { /* hash table can never be full */
+ int entryPos = cache->hashEntries[slot];
+
+ if (entryPos == -1)
+ return -1;
+
+ if (memcmp
+ (pGlyph->sha1, cache->glyphs[entryPos].sha1,
+ sizeof(pGlyph->sha1)) == 0) {
+ return entryPos;
+ }
+
+ slot--;
+ if (slot < 0)
+ slot = cache->hashSize - 1;
+ }
+}
+
+static void
+exaGlyphCacheHashInsert(ExaGlyphCachePtr cache, GlyphPtr pGlyph, int pos)
+{
+ int slot;
+
+ memcpy(cache->glyphs[pos].sha1, pGlyph->sha1, sizeof(pGlyph->sha1));
+
+ slot = (*(CARD32 *) pGlyph->sha1) % cache->hashSize;
+
+ while (TRUE) { /* hash table can never be full */
+ if (cache->hashEntries[slot] == -1) {
+ cache->hashEntries[slot] = pos;
+ return;
+ }
+
+ slot--;
+ if (slot < 0)
+ slot = cache->hashSize - 1;
+ }
+}
+
+static void
+exaGlyphCacheHashRemove(ExaGlyphCachePtr cache, int pos)
+{
+ int slot;
+ int emptiedSlot = -1;
+
+ slot = (*(CARD32 *) cache->glyphs[pos].sha1) % cache->hashSize;
+
+ while (TRUE) { /* hash table can never be full */
+ int entryPos = cache->hashEntries[slot];
+
+ if (entryPos == -1)
+ return;
+
+ if (entryPos == pos) {
+ cache->hashEntries[slot] = -1;
+ emptiedSlot = slot;
+ }
+ else if (emptiedSlot != -1) {
+ /* See if we can move this entry into the emptied slot, we can't
+ * do that if if entry would have hashed between the current position
+ * and the emptied slot. (taking wrapping into account). Bad positions
+ * are:
+ *
+ * | XXXXXXXXXX |
+ * i j
+ *
+ * |XXX XXXX|
+ * j i
+ *
+ * i - slot, j - emptiedSlot
+ *
+ * (Knuth 6.4R)
+ */
+
+ int entrySlot =
+ (*(CARD32 *) cache->glyphs[entryPos].sha1) % cache->hashSize;
+
+ if (!((entrySlot >= slot && entrySlot < emptiedSlot) ||
+ (emptiedSlot < slot &&
+ (entrySlot < emptiedSlot || entrySlot >= slot)))) {
+ cache->hashEntries[emptiedSlot] = entryPos;
+ cache->hashEntries[slot] = -1;
+ emptiedSlot = slot;
+ }
+ }
+
+ slot--;
+ if (slot < 0)
+ slot = cache->hashSize - 1;
+ }
+}
+
+#define CACHE_X(pos) (((pos) % cache->columns) * cache->glyphWidth)
+#define CACHE_Y(pos) (cache->yOffset + ((pos) / cache->columns) * cache->glyphHeight)
+
+/* The most efficient thing to way to upload the glyph to the screen
+ * is to use the UploadToScreen() driver hook; this allows us to
+ * pipeline glyph uploads and to avoid creating gpu backed pixmaps for
+ * glyphs that we'll never use again.
+ *
+ * If we can't do it with UploadToScreen (because the glyph has a gpu copy,
+ * etc), we fall back to CompositePicture.
+ *
+ * We need to damage the cache pixmap manually in either case because the damage
+ * layer unwrapped the picture screen before calling exaGlyphs.
+ */
+static void
+exaGlyphCacheUploadGlyph(ScreenPtr pScreen,
+ ExaGlyphCachePtr cache, int x, int y, GlyphPtr pGlyph)
+{
+ ExaScreenPriv(pScreen);
+ PicturePtr pGlyphPicture = GlyphPicture(pGlyph)[pScreen->myNum];
+ PixmapPtr pGlyphPixmap = (PixmapPtr) pGlyphPicture->pDrawable;
+
+ ExaPixmapPriv(pGlyphPixmap);
+ PixmapPtr pCachePixmap = (PixmapPtr) cache->picture->pDrawable;
+
+ if (!pExaScr->info->UploadToScreen || pExaScr->swappedOut ||
+ pExaPixmap->accel_blocked)
+ goto composite;
+
+ /* If the glyph pixmap is already uploaded, no point in doing
+ * things this way */
+ if (exaPixmapHasGpuCopy(pGlyphPixmap))
+ goto composite;
+
+ /* UploadToScreen only works if bpp match */
+ if (pGlyphPixmap->drawable.bitsPerPixel !=
+ pCachePixmap->drawable.bitsPerPixel)
+ goto composite;
+
+ if (pExaScr->do_migration) {
+ ExaMigrationRec pixmaps[1];
+
+ /* cache pixmap must have a gpu copy. */
+ pixmaps[0].as_dst = TRUE;
+ pixmaps[0].as_src = FALSE;
+ pixmaps[0].pPix = pCachePixmap;
+ pixmaps[0].pReg = NULL;
+ exaDoMigration(pixmaps, 1, TRUE);
+ }
+
+ if (!exaPixmapHasGpuCopy(pCachePixmap))
+ goto composite;
+
+ /* x,y are in pixmap coordinates, no need for cache{X,Y}off */
+ if (pExaScr->info->UploadToScreen(pCachePixmap,
+ x,
+ y,
+ pGlyph->info.width,
+ pGlyph->info.height,
+ (char *) pExaPixmap->sys_ptr,
+ pExaPixmap->sys_pitch))
+ goto damage;
+
+ composite:
+ CompositePicture(PictOpSrc,
+ pGlyphPicture,
+ None,
+ cache->picture,
+ 0, 0, 0, 0, x, y, pGlyph->info.width, pGlyph->info.height);
+
+ damage:
+ /* The cache pixmap isn't a window, so no need to offset coordinates. */
+ exaPixmapDirty(pCachePixmap,
+ x, y, x + cache->glyphWidth, y + cache->glyphHeight);
+}
+
+static ExaGlyphCacheResult
+exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
+ ExaGlyphCachePtr cache,
+ ExaGlyphBufferPtr buffer,
+ GlyphPtr pGlyph,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ INT16 xSrc,
+ INT16 ySrc,
+ INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst)
+{
+ ExaCompositeRectPtr rect;
+ int pos;
+ int x, y;
+
+ if (buffer->mask && buffer->mask != cache->picture)
+ return ExaGlyphNeedFlush;
+
+ if (!cache->picture) {
+ if (!exaRealizeGlyphCaches(pScreen, cache->format))
+ return ExaGlyphFail;
+ }
+
+ DBG_GLYPH_CACHE(("(%d,%d,%s): buffering glyph %lx\n",
+ cache->glyphWidth, cache->glyphHeight,
+ cache->format == PICT_a8 ? "A" : "ARGB",
+ (long) *(CARD32 *) pGlyph->sha1));
+
+ pos = exaGlyphCacheHashLookup(cache, pGlyph);
+ if (pos != -1) {
+ DBG_GLYPH_CACHE((" found existing glyph at %d\n", pos));
+ x = CACHE_X(pos);
+ y = CACHE_Y(pos);
+ }
+ else {
+ if (cache->glyphCount < cache->size) {
+ /* Space remaining; we fill from the start */
+ pos = cache->glyphCount;
+ x = CACHE_X(pos);
+ y = CACHE_Y(pos);
+ cache->glyphCount++;
+ DBG_GLYPH_CACHE((" storing glyph in free space at %d\n", pos));
+
+ exaGlyphCacheHashInsert(cache, pGlyph, pos);
+
+ }
+ else {
+ /* Need to evict an entry. We have to see if any glyphs
+ * already in the output buffer were at this position in
+ * the cache
+ */
+ pos = cache->evictionPosition;
+ x = CACHE_X(pos);
+ y = CACHE_Y(pos);
+ DBG_GLYPH_CACHE((" evicting glyph at %d\n", pos));
+ if (buffer->count) {
+ int i;
+
+ for (i = 0; i < buffer->count; i++) {
+ if (pSrc ?
+ (buffer->rects[i].xMask == x &&
+ buffer->rects[i].yMask ==
+ y) : (buffer->rects[i].xSrc == x &&
+ buffer->rects[i].ySrc == y)) {
+ DBG_GLYPH_CACHE((" must flush buffer\n"));
+ return ExaGlyphNeedFlush;
+ }
+ }
+ }
+
+ /* OK, we're all set, swap in the new glyph */
+ exaGlyphCacheHashRemove(cache, pos);
+ exaGlyphCacheHashInsert(cache, pGlyph, pos);
+
+ /* And pick a new eviction position */
+ cache->evictionPosition = rand() % cache->size;
+ }
+
+ exaGlyphCacheUploadGlyph(pScreen, cache, x, y, pGlyph);
+ }
+
+ buffer->mask = cache->picture;
+
+ rect = &buffer->rects[buffer->count];
+
+ if (pSrc) {
+ rect->xSrc = xSrc;
+ rect->ySrc = ySrc;
+ rect->xMask = x;
+ rect->yMask = y;
+ }
+ else {
+ rect->xSrc = x;
+ rect->ySrc = y;
+ rect->xMask = 0;
+ 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);
+ }
+}