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xserver-multidpi/glamor/glamor_glyphs.c

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/*
* 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
*/
#include <stdlib.h>
#include "glamor_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.
*/
/* Maximum number of glyphs we buffer on the stack before flushing
* rendering to the mask or destination surface.
*/
#define GLYPH_BUFFER_SIZE 1024
typedef struct {
PicturePtr source;
glamor_composite_rect_t rects[GLYPH_BUFFER_SIZE + 4];
int count;
} glamor_glyph_buffer_t;
struct glamor_glyph {
glamor_glyph_cache_t *cache;
uint16_t x, y;
uint16_t size, pos;
unsigned long long left_x1_map, left_x2_map;
unsigned long long right_x1_map, right_x2_map; /* Use to check real intersect or not. */
Bool has_edge_map;
Bool cached;
};
typedef enum {
GLAMOR_GLYPH_SUCCESS, /* Glyph added to render buffer */
GLAMOR_GLYPH_FAIL, /* out of memory, etc */
GLAMOR_GLYPH_NEED_FLUSH, /* would evict a glyph already in the buffer */
} glamor_glyph_cache_result_t;
#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
static DevPrivateKeyRec glamor_glyph_key;
static inline struct glamor_glyph *
glamor_glyph_get_private(ScreenPtr screen, GlyphPtr glyph)
{
struct glamor_glyph *privates = (struct glamor_glyph*)glyph->devPrivates;
return &privates[screen->myNum];
}
/*
* Mask cache is located at the corresponding cache picture's last row.
* and is deadicated for the mask picture when do the glyphs_via_mask.
*
* As we split the glyphs list according to its overlapped or non-overlapped,
* we can reduce the length of glyphs to do the glyphs_via_mask to 2 or 3
* glyphs one time for most cases. Thus it give us a case to allocate a
* small portion of the corresponding cache directly as the mask picture.
* Then we can rendering the glyphs to this mask picture, and latter we
* can accumulate the second steps, composite the mask to the dest with
* the other non-overlapped glyphs's rendering process.
* Another major benefit is we now only need to clear a relatively small mask
* region then before. It also make us implement a bunch mask picture clearing
* algorithm to avoid too frequently small region clearing.
*
* If there is no any overlapping, this method will not get performance gain.
* If there is some overlapping, then this algorithm can get about 15% performance
* gain.
*/
static void
clear_mask_cache_bitmap(glamor_glyph_mask_cache_t *maskcache,
unsigned int clear_mask_bits)
{
unsigned int i = 0;
BoxRec box[MASK_CACHE_WIDTH];
int box_cnt = 0;
assert((clear_mask_bits & ~MASK_CACHE_MASK) == 0);
for (i = 0; i < MASK_CACHE_WIDTH; i++) {
if (clear_mask_bits & (1 << i)) {
box[box_cnt].x1 = maskcache->mcache[i].x;
box[box_cnt].x2 = maskcache->mcache[i].x + MASK_CACHE_MAX_SIZE;
box[box_cnt].y1 = maskcache->mcache[i].y;
box[box_cnt].y2 = maskcache->mcache[i].y + MASK_CACHE_MAX_SIZE;
box_cnt++;
}
}
glamor_solid_boxes(maskcache->pixmap, box, box_cnt, 0);
maskcache->cleared_bitmap |= clear_mask_bits;
}
static void
clear_mask_cache(glamor_glyph_mask_cache_t *maskcache)
{
int x = 0;
int cnt = MASK_CACHE_WIDTH;
unsigned int i = 0;
struct glamor_glyph_mask_cache_entry *mce;
glamor_solid(maskcache->pixmap, 0, CACHE_PICTURE_SIZE, CACHE_PICTURE_SIZE,
MASK_CACHE_MAX_SIZE, 0);
mce = &maskcache->mcache[0];
while (cnt--) {
mce->width = 0;
mce->height = 0;
mce->x = x;
mce->y = CACHE_PICTURE_SIZE;
mce->idx = i++;
x += MASK_CACHE_MAX_SIZE;
mce++;
}
maskcache->free_bitmap = MASK_CACHE_MASK;
maskcache->cleared_bitmap = MASK_CACHE_MASK;
}
static int
find_continuous_bits(unsigned int bits, int bits_cnt, unsigned int *pbits_mask)
{
int idx = 0;
unsigned int bits_mask;
bits_mask = ((1LL << bits_cnt) - 1);
if (_X_UNLIKELY(bits_cnt > 56)) {
while (bits) {
if ((bits & bits_mask) == bits_mask) {
*pbits_mask = bits_mask << idx;
return idx;
}
bits >>= 1;
idx++;
}
}
else {
idx = __fls(bits);
while (bits) {
unsigned int temp_bits;
temp_bits = bits_mask << (idx - bits_cnt + 1);
if ((bits & temp_bits) == temp_bits) {
*pbits_mask = temp_bits;
return (idx - bits_cnt + 1);
}
/* Find first zero. And clear the tested bit. */
bits &= ~(1LL << idx);
idx = __fls(~bits);
bits &= ~((1LL << idx) - 1);
idx--;
}
}
return -1;
}
static struct glamor_glyph_mask_cache_entry *
get_mask_cache(glamor_glyph_mask_cache_t *maskcache, int blocks)
{
int free_cleared_bit, idx = -1;
int retry_cnt = 0;
unsigned int bits_mask = 0;
if (maskcache->free_bitmap == 0)
return NULL;
retry:
free_cleared_bit = maskcache->free_bitmap & maskcache->cleared_bitmap;
if (free_cleared_bit && blocks == 1) {
idx = __fls(free_cleared_bit);
bits_mask = 1 << idx;
}
else if (free_cleared_bit && blocks > 1) {
idx = find_continuous_bits(free_cleared_bit, blocks, &bits_mask);
}
if (idx < 0) {
clear_mask_cache_bitmap(maskcache, maskcache->free_bitmap);
if (retry_cnt++ > 2)
return NULL;
goto retry;
}
maskcache->cleared_bitmap &= ~bits_mask;
maskcache->free_bitmap &= ~bits_mask;
DEBUGF("get idx %d free %x clear %x \n",
idx, maskcache->free_bitmap, maskcache->cleared_bitmap);
return &maskcache->mcache[idx];
}
static void
put_mask_cache_bitmap(glamor_glyph_mask_cache_t *maskcache,
unsigned int bitmap)
{
maskcache->free_bitmap |= bitmap;
DEBUGF("put bitmap %x free %x clear %x \n",
bitmap, maskcache->free_bitmap, maskcache->cleared_bitmap);
}
static void
glamor_unrealize_glyph_caches(ScreenPtr pScreen)
{
glamor_screen_private *glamor = glamor_get_screen_private(pScreen);
int i;
if (!glamor->glyph_caches_realized)
return;
for (i = 0; i < GLAMOR_NUM_GLYPH_CACHE_FORMATS; i++) {
glamor_glyph_cache_t *cache = &glamor->glyphCaches[i];
if (cache->picture)
FreePicture(cache->picture, 0);
if (cache->glyphs)
free(cache->glyphs);
if (glamor->mask_cache[i])
free(glamor->mask_cache[i]);
}
glamor->glyph_caches_realized = FALSE;
}
void
glamor_glyphs_fini(ScreenPtr pScreen)
{
glamor_unrealize_glyph_caches(pScreen);
}
/* 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 source 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.
*/
Bool
glamor_realize_glyph_caches(ScreenPtr pScreen)
{
glamor_screen_private *glamor = glamor_get_screen_private(pScreen);
unsigned int formats[] = {
PIXMAN_a8,
PIXMAN_a8r8g8b8,
};
int i;
if (glamor->glyph_caches_realized)
return TRUE;
memset(glamor->glyphCaches, 0, sizeof(glamor->glyphCaches));
for (i = 0; i < sizeof(formats) / sizeof(formats[0]); i++) {
glamor_glyph_cache_t *cache = &glamor->glyphCaches[i];
PixmapPtr pixmap;
PicturePtr picture;
XID component_alpha;
int depth = PIXMAN_FORMAT_DEPTH(formats[i]);
int error;
PictFormatPtr pPictFormat =
PictureMatchFormat(pScreen, depth, formats[i]);
if (!pPictFormat)
goto bail;
/* Now allocate the pixmap and picture */
pixmap = pScreen->CreatePixmap(pScreen,
CACHE_PICTURE_SIZE,
CACHE_PICTURE_SIZE + MASK_CACHE_MAX_SIZE,
depth, GLAMOR_CREATE_NO_LARGE);
if (!pixmap)
goto bail;
component_alpha = NeedsComponent(pPictFormat->format);
picture = CreatePicture(0, &pixmap->drawable, pPictFormat,
CPComponentAlpha, &component_alpha,
serverClient, &error);
pScreen->DestroyPixmap(pixmap);
if (!picture)
goto bail;
ValidatePicture(picture);
cache->picture = picture;
cache->glyphs = calloc(sizeof(GlyphPtr), GLYPH_CACHE_SIZE);
if (!cache->glyphs)
goto bail;
cache->evict = rand() % GLYPH_CACHE_SIZE;
glamor->mask_cache[i] = calloc(1, sizeof(*glamor->mask_cache[i]));
glamor->mask_cache[i]->pixmap = pixmap;
clear_mask_cache(glamor->mask_cache[i]);
}
assert(i == GLAMOR_NUM_GLYPH_CACHE_FORMATS);
glamor->glyph_caches_realized = TRUE;
return TRUE;
bail:
glamor_unrealize_glyph_caches(pScreen);
return FALSE;
}
/**
* Called by glamor_create_screen_resources() to set up the glyph cache.
*
* This was previously required to be called by the drivers, but not
* as of the xserver 1.16 ABI.
*/
Bool
glamor_glyphs_init(ScreenPtr pScreen)
{
if (!dixRegisterPrivateKey(&glamor_glyph_key,
PRIVATE_GLYPH,
screenInfo.numScreens * sizeof(struct glamor_glyph)))
return FALSE;
return TRUE;
}
/* The most efficient thing to way to upload the glyph to the screen
* is to use CopyArea; glamor pixmaps are always offscreen.
*/
static void
glamor_glyph_cache_upload_glyph(ScreenPtr screen,
glamor_glyph_cache_t *cache,
GlyphPtr glyph, int x, int y)
{
PicturePtr pGlyphPicture = GlyphPicture(glyph)[screen->myNum];
PixmapPtr pGlyphPixmap = (PixmapPtr) pGlyphPicture->pDrawable;
PixmapPtr pCachePixmap = (PixmapPtr) cache->picture->pDrawable;
PixmapPtr scratch;
BoxRec box;
GCPtr gc;
gc = GetScratchGC(pCachePixmap->drawable.depth, screen);
if (!gc)
return;
ValidateGC(&pCachePixmap->drawable, gc);
scratch = pGlyphPixmap;
if (pGlyphPixmap->drawable.depth != pCachePixmap->drawable.depth) {
scratch = glamor_create_pixmap(screen,
glyph->info.width,
glyph->info.height,
pCachePixmap->drawable.depth, 0);
if (scratch) {
PicturePtr picture;
int error;
picture =
CreatePicture(0,
&scratch->drawable,
PictureMatchFormat
(screen,
pCachePixmap->drawable.depth,
cache->picture->format),
0, NULL, serverClient, &error);
if (picture) {
ValidatePicture(picture);
glamor_composite(PictOpSrc,
pGlyphPicture,
NULL, picture,
0, 0, 0, 0, 0,
0, glyph->info.width, glyph->info.height);
FreePicture(picture, 0);
}
}
else {
scratch = pGlyphPixmap;
}
}
box.x1 = x;
box.y1 = y;
box.x2 = x + glyph->info.width;
box.y2 = y + glyph->info.height;
glamor_copy(&scratch->drawable,
&pCachePixmap->drawable, NULL,
&box, 1, -x, -y, FALSE, FALSE, 0, NULL);
if (scratch != pGlyphPixmap)
screen->DestroyPixmap(scratch);
FreeScratchGC(gc);
}
void
glamor_glyph_unrealize(ScreenPtr screen, GlyphPtr glyph)
{
struct glamor_glyph *priv;
/* Use Lookup in case we have not attached to this glyph. */
priv = glamor_glyph_get_private(screen, glyph);
if (priv->cached)
priv->cache->glyphs[priv->pos] = NULL;
}
/* Cut and paste from render/glyph.c - probably should export it instead */
static void
glamor_glyph_extents(int nlist,
GlyphListPtr list, GlyphPtr *glyphs, BoxPtr extents)
{
int x1, x2, y1, y2;
int x, y, n;
x1 = y1 = MAXSHORT;
x2 = y2 = MINSHORT;
x = y = 0;
while (nlist--) {
x += list->xOff;
y += list->yOff;
n = list->len;
list++;
while (n--) {
GlyphPtr glyph = *glyphs++;
int v;
v = x - glyph->info.x;
if (v < x1)
x1 = v;
v += glyph->info.width;
if (v > x2)
x2 = v;
v = y - glyph->info.y;
if (v < y1)
y1 = v;
v += glyph->info.height;
if (v > y2)
y2 = v;
x += glyph->info.xOff;
y += glyph->info.yOff;
}
}
extents->x1 = x1 < MINSHORT ? MINSHORT : x1;
extents->x2 = x2 > MAXSHORT ? MAXSHORT : x2;
extents->y1 = y1 < MINSHORT ? MINSHORT : y1;
extents->y2 = y2 > MAXSHORT ? MAXSHORT : y2;
}
static void
glamor_glyph_priv_get_edge_map(GlyphPtr glyph, struct glamor_glyph *priv,
PicturePtr glyph_picture)
{
PixmapPtr glyph_pixmap = (PixmapPtr) glyph_picture->pDrawable;
int j;
unsigned long long left_x1_map = 0, left_x2_map = 0;
unsigned long long right_x1_map = 0, right_x2_map = 0;
int bitsPerPixel;
int stride;
void *bits;
int width;
unsigned int left_x1_data = 0, left_x2_data = 0;
unsigned int right_x1_data = 0, right_x2_data = 0;
bitsPerPixel = glyph_pixmap->drawable.bitsPerPixel;
stride = glyph_pixmap->devKind;
bits = glyph_pixmap->devPrivate.ptr;
width = glyph->info.width;
if (glyph_pixmap->drawable.width < 2
|| !(glyph_pixmap->drawable.depth == 8
|| glyph_pixmap->drawable.depth == 1
|| glyph_pixmap->drawable.depth == 32)) {
priv->has_edge_map = FALSE;
return;
}
left_x1_map = left_x2_map = 0;
right_x1_map = right_x2_map = 0;
for (j = 0; j < glyph_pixmap->drawable.height; j++) {
if (bitsPerPixel == 8) {
unsigned char *data;
data = (unsigned char *) ((unsigned char *) bits + stride * j);
left_x1_data = *data++;
left_x2_data = *data;
data =
(unsigned char *) ((unsigned char *) bits + stride * j + width -
2);
right_x1_data = *data++;
right_x2_data = *data;
}
else if (bitsPerPixel == 32) {
left_x1_data = *((unsigned int *) bits + stride / 4 * j);
left_x2_data = *((unsigned int *) bits + stride / 4 * j + 1);
right_x1_data =
*((unsigned int *) bits + stride / 4 * j + width - 2);
right_x2_data =
*((unsigned int *) bits + stride / 4 * j + width - 1);
}
else if (bitsPerPixel == 1) {
unsigned char temp;
temp = *((unsigned char *) glyph_pixmap->devPrivate.ptr
+ glyph_pixmap->devKind * j) & 0x3;
left_x1_data = temp & 0x1;
left_x2_data = temp & 0x2;
temp = *((unsigned char *) glyph_pixmap->devPrivate.ptr
+ glyph_pixmap->devKind * j
+ (glyph_pixmap->drawable.width - 2) / 8);
right_x1_data = temp
& (1 << ((glyph_pixmap->drawable.width - 2) % 8));
temp = *((unsigned char *) glyph_pixmap->devPrivate.ptr
+ glyph_pixmap->devKind * j
+ (glyph_pixmap->drawable.width - 1) / 8);
right_x2_data = temp
& (1 << ((glyph_pixmap->drawable.width - 1) % 8));
}
left_x1_map |= (left_x1_data != 0) << j;
left_x2_map |= (left_x2_data != 0) << j;
right_x1_map |= (right_x1_data != 0) << j;
right_x2_map |= (right_x2_data != 0) << j;
}
priv->left_x1_map = left_x1_map;
priv->left_x2_map = left_x2_map;
priv->right_x1_map = right_x1_map;
priv->right_x2_map = right_x2_map;
priv->has_edge_map = TRUE;
return;
}
/**
* Returns TRUE if the glyphs in the lists intersect. Only checks based on
* bounding box, which appears to be good enough to catch most cases at least.
*/
#define INTERSECTED_TYPE_MASK 1
#define NON_INTERSECTED 0
#define INTERSECTED 1
struct glamor_glyph_list {
int nlist;
GlyphListPtr list;
GlyphPtr *glyphs;
int type;
};
static Bool
glyph_new_fixed_list(struct glamor_glyph_list *fixed_list,
GlyphPtr *cur_glyphs,
GlyphPtr ** head_glyphs,
GlyphListPtr cur_list,
int cur_pos, int cur_x, int cur_y,
int x1, int y1, int x2, int y2,
GlyphListPtr *head_list,
int *head_pos,
int *head_x,
int *head_y, int *fixed_cnt, int type, BoxPtr prev_extents)
{
int x_off = 0;
int y_off = 0;
int n_off = 0;
int list_cnt;
if (type == NON_INTERSECTED) {
if (x1 < prev_extents->x2 && x2 > prev_extents->x1
&& y1 < prev_extents->y2 && y2 > prev_extents->y1)
return FALSE;
x_off = (*(cur_glyphs - 1))->info.xOff;
y_off = (*(cur_glyphs - 1))->info.yOff;
n_off = 1;
}
list_cnt = cur_list - *head_list + 1;
if (cur_pos <= n_off) {
DEBUGF("break at %d n_off %d\n", cur_pos, n_off);
list_cnt--;
if (cur_pos < n_off) {
/* we overlap with previous list's last glyph. */
x_off += cur_list->xOff;
y_off += cur_list->yOff;
cur_list--;
cur_pos = cur_list->len;
if (cur_pos <= n_off) {
list_cnt--;
}
}
}
DEBUGF("got %d lists\n", list_cnt);
if (list_cnt != 0) {
fixed_list->list = xallocarray(list_cnt, sizeof(*cur_list));
memcpy(fixed_list->list, *head_list, list_cnt * sizeof(*cur_list));
fixed_list->list[0].xOff = *head_x;
fixed_list->list[0].yOff = *head_y;
fixed_list->glyphs = *head_glyphs;
fixed_list->type = type & INTERSECTED_TYPE_MASK;
fixed_list->nlist = list_cnt;
if (cur_list != *head_list) {
fixed_list->list[0].len = (*head_list)->len - *head_pos;
if (cur_pos != n_off)
fixed_list->list[list_cnt - 1].len = cur_pos - n_off;
}
else
fixed_list->list[0].len = cur_pos - *head_pos - n_off;
(*fixed_cnt)++;
}
if (type <= INTERSECTED) {
*head_list = cur_list;
*head_pos = cur_pos - n_off;
*head_x = cur_x - x_off;
*head_y = cur_y - y_off;
*head_glyphs = cur_glyphs - n_off;
}
return TRUE;
}
/*
* This function detects glyph lists's overlapping.
*
* If check_fake_overlap is set, then it will check the glyph's left
* and right small boxes's real overlapping pixels. And if there is
* no real pixel overlapping, then it will not be treated as overlapped
* case. And we also can configured it to ignore less than 2 pixels
* overlappig.
*
* This function analyzes all the lists and split the list to multiple
* lists which are pure overlapped glyph lists or pure non-overlapped
* list if the overlapping only ocurr on the two adjacent glyphs.
* Otherwise, it return -1.
*
**/
static int
glamor_glyphs_intersect(int nlist, GlyphListPtr list, GlyphPtr *glyphs,
PictFormatShort mask_format,
ScreenPtr screen, Bool check_fake_overlap,
struct glamor_glyph_list *fixed_list, int fixed_size)
{
int x1, x2, y1, y2;
int n;
int x, y;
BoxPtr extents;
BoxRec prev_extents;
Bool first = TRUE, first_list = TRUE;
Bool need_free_list_region = FALSE;
Bool need_free_fixed_list = FALSE;
struct glamor_glyph *priv = NULL;
Bool in_non_intersected_list = -1;
GlyphListPtr head_list;
int head_x, head_y, head_pos;
int fixed_cnt = 0;
GlyphPtr *head_glyphs;
GlyphListPtr cur_list = list;
RegionRec list_region;
RegionRec current_region;
BoxRec current_box;
if (nlist > 1) {
pixman_region_init(&list_region);
need_free_list_region = TRUE;
}
pixman_region_init(&current_region);
extents = pixman_region_extents(&current_region);
x = 0;
y = 0;
x1 = x2 = y1 = y2 = 0;
n = 0;
extents->x1 = 0;
extents->y1 = 0;
extents->x2 = 0;
extents->y2 = 0;
head_list = list;
DEBUGF("has %d lists.\n", nlist);
while (nlist--) {
BoxRec left_box, right_box = { 0 };
Bool has_left_edge_box = FALSE, has_right_edge_box = FALSE;
Bool left_to_right;
struct glamor_glyph *left_priv = NULL, *right_priv = NULL;
x += list->xOff;
y += list->yOff;
n = list->len;
left_to_right = TRUE;
cur_list = list++;
if (_X_UNLIKELY(!first_list)) {
pixman_region_init_with_extents(&current_region, extents);
pixman_region_union(&list_region, &list_region, &current_region);
first = TRUE;
}
else {
head_list = cur_list;
head_pos = cur_list->len - n;
head_x = x;
head_y = y;
head_glyphs = glyphs;
}
DEBUGF("current list %p has %d glyphs\n", cur_list, n);
while (n--) {
GlyphPtr glyph = *glyphs++;
DEBUGF("the %dth glyph\n", cur_list->len - n - 1);
if (glyph->info.width == 0 || glyph->info.height == 0) {
x += glyph->info.xOff;
y += glyph->info.yOff;
continue;
}
if (mask_format
&& mask_format != GlyphPicture(glyph)[screen->myNum]->format) {
need_free_fixed_list = TRUE;
goto done;
}
x1 = x - glyph->info.x;
if (x1 < MINSHORT)
x1 = MINSHORT;
y1 = y - glyph->info.y;
if (y1 < MINSHORT)
y1 = MINSHORT;
if (check_fake_overlap)
priv = glamor_glyph_get_private(screen, glyph);
x2 = x1 + glyph->info.width;
y2 = y1 + glyph->info.height;
if (x2 > MAXSHORT)
x2 = MAXSHORT;
if (y2 > MAXSHORT)
y2 = MAXSHORT;
if (first) {
extents->x1 = x1;
extents->y1 = y1;
extents->x2 = x2;
extents->y2 = y2;
prev_extents = *extents;
first = FALSE;
if (check_fake_overlap && priv
&& priv->has_edge_map && glyph->info.yOff == 0) {
left_box.x1 = x1;
left_box.x2 = x1 + 1;
left_box.y1 = y1;
right_box.x1 = x2 - 2;
right_box.x2 = x2 - 1;
right_box.y1 = y1;
left_priv = right_priv = priv;
has_left_edge_box = TRUE;
has_right_edge_box = TRUE;
}
}
else {
if (_X_UNLIKELY(!first_list)) {
current_box.x1 = x1;
current_box.y1 = y1;
current_box.x2 = x2;
current_box.y2 = y2;
if (pixman_region_contains_rectangle
(&list_region, &current_box) != PIXMAN_REGION_OUT) {
need_free_fixed_list = TRUE;
goto done;
}
}
if (x1 < extents->x2 && x2 > extents->x1
&& y1 < extents->y2 && y2 > extents->y1) {
if (check_fake_overlap &&
(has_left_edge_box || has_right_edge_box)
&& priv->has_edge_map && glyph->info.yOff == 0) {
int left_dx, right_dx;
unsigned long long intersected;
left_dx = has_left_edge_box ? 1 : 0;
right_dx = has_right_edge_box ? 1 : 0;
if (x1 + 1 < extents->x2 - right_dx &&
x2 - 1 > extents->x1 + left_dx)
goto real_intersected;
if (left_to_right && has_right_edge_box) {
if (x1 == right_box.x1) {
intersected =
((priv->left_x1_map & right_priv->
right_x1_map)
| (priv->left_x2_map & right_priv->
right_x2_map));
if (intersected)
goto real_intersected;
}
else if (x1 == right_box.x2) {
intersected =
(priv->left_x1_map & right_priv->
right_x2_map);
if (intersected) {
#ifdef GLYPHS_EDEGE_OVERLAP_LOOSE_CHECK
/* tolerate with two pixels overlap. */
intersected &= ~(1 << __fls(intersected));
if ((intersected & (intersected - 1)))
#endif
goto real_intersected;
}
}
}
else if (!left_to_right && has_left_edge_box) {
if (x2 - 1 == left_box.x1) {
intersected =
(priv->right_x2_map & left_priv->
left_x1_map);
if (intersected) {
#ifdef GLYPHS_EDEGE_OVERLAP_LOOSE_CHECK
/* tolerate with two pixels overlap. */
intersected &= ~(1 << __fls(intersected));
if ((intersected & (intersected - 1)))
#endif
goto real_intersected;
}
}
else if (x2 - 1 == right_box.x2) {
if ((priv->right_x1_map & left_priv->
left_x1_map)
|| (priv->right_x2_map & left_priv->
left_x2_map))
goto real_intersected;
}
}
else {
if (x1 < extents->x2 && x1 + 2 > extents->x1)
goto real_intersected;
}
goto non_intersected;
}
else {
real_intersected:
DEBUGF("overlap with previous glyph.\n");
if (in_non_intersected_list == 1) {
if (fixed_cnt >= fixed_size) {
need_free_fixed_list = TRUE;
goto done;
}
if (!glyph_new_fixed_list(&fixed_list[fixed_cnt],
glyphs - 1,
&head_glyphs,
cur_list,
cur_list->len - (n + 1),
x, y, x1, y1, x2, y2,
&head_list, &head_pos,
&head_x, &head_y,
&fixed_cnt,
NON_INTERSECTED,
&prev_extents)) {
need_free_fixed_list = TRUE;
goto done;
}
}
in_non_intersected_list = 0;
}
}
else {
non_intersected:
DEBUGF("doesn't overlap with previous glyph.\n");
if (in_non_intersected_list == 0) {
if (fixed_cnt >= fixed_size) {
need_free_fixed_list = TRUE;
goto done;
}
if (!glyph_new_fixed_list(&fixed_list[fixed_cnt],
glyphs - 1,
&head_glyphs,
cur_list,
cur_list->len - (n + 1), x, y,
x1, y1, x2, y2,
&head_list,
&head_pos,
&head_x,
&head_y, &fixed_cnt,
INTERSECTED, &prev_extents)) {
need_free_fixed_list = TRUE;
goto done;
}
}
in_non_intersected_list = 1;
}
prev_extents = *extents;
}
if (check_fake_overlap && priv
&& priv->has_edge_map && glyph->info.yOff == 0) {
if (!has_left_edge_box || x1 < extents->x1) {
left_box.x1 = x1;
left_box.x2 = x1 + 1;
left_box.y1 = y1;
has_left_edge_box = TRUE;
left_priv = priv;
}
if (!has_right_edge_box || x2 > extents->x2) {
right_box.x1 = x2 - 2;
right_box.x2 = x2 - 1;
right_box.y1 = y1;
has_right_edge_box = TRUE;
right_priv = priv;
}
}
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;
}
first_list = FALSE;
}
if (in_non_intersected_list == 0 && fixed_cnt == 0) {
fixed_cnt = -1;
goto done;
}
if ((in_non_intersected_list != -1 || head_pos != n) && (fixed_cnt > 0)) {
if (fixed_cnt >= fixed_size) {
need_free_fixed_list = TRUE;
goto done;
}
if (!glyph_new_fixed_list(&fixed_list[fixed_cnt],
glyphs - 1,
&head_glyphs,
cur_list,
cur_list->len - (n + 1), x, y,
x1, y1, x2, y2,
&head_list,
&head_pos,
&head_x,
&head_y, &fixed_cnt,
(!in_non_intersected_list) | 0x80,
&prev_extents)) {
need_free_fixed_list = TRUE;
goto done;
}
}
done:
if (need_free_list_region)
pixman_region_fini(&list_region);
pixman_region_fini(&current_region);
if (need_free_fixed_list && fixed_cnt >= 0) {
while (fixed_cnt--) {
free(fixed_list[fixed_cnt].list);
}
}
DEBUGF("Got %d fixed list \n", fixed_cnt);
return fixed_cnt;
}
static inline unsigned int
glamor_glyph_size_to_count(int size)
{
size /= GLYPH_MIN_SIZE;
return size * size;
}
static inline unsigned int
glamor_glyph_count_to_mask(int count)
{
return ~(count - 1);
}
static inline unsigned int
glamor_glyph_size_to_mask(int size)
{
return glamor_glyph_count_to_mask(glamor_glyph_size_to_count(size));
}
static PicturePtr
glamor_glyph_cache(glamor_screen_private *glamor, GlyphPtr glyph, int *out_x,
int *out_y)
{
ScreenPtr screen = glamor->screen;
PicturePtr glyph_picture = GlyphPicture(glyph)[screen->myNum];
glamor_glyph_cache_t *cache =
&glamor->glyphCaches[PICT_FORMAT_RGB(glyph_picture->format) != 0];
struct glamor_glyph *priv = NULL, *evicted_priv = NULL;
int size, mask, pos, s;
if (glyph->info.width > GLYPH_MAX_SIZE
|| glyph->info.height > GLYPH_MAX_SIZE)
return NULL;
for (size = GLYPH_MIN_SIZE; size <= GLYPH_MAX_SIZE; size *= 2)
if (glyph->info.width <= size && glyph->info.height <= size)
break;
s = glamor_glyph_size_to_count(size);
mask = glamor_glyph_count_to_mask(s);
pos = (cache->count + s - 1) & mask;
priv = glamor_glyph_get_private(screen, glyph);
if (pos < GLYPH_CACHE_SIZE) {
cache->count = pos + s;
}
else {
for (s = size; s <= GLYPH_MAX_SIZE; s *= 2) {
int i = cache->evict & glamor_glyph_size_to_mask(s);
GlyphPtr evicted = cache->glyphs[i];
if (evicted == NULL)
continue;
evicted_priv = glamor_glyph_get_private(screen, evicted);
assert(evicted_priv->pos == i);
if (evicted_priv->size >= s) {
cache->glyphs[i] = NULL;
evicted_priv->cached = FALSE;
pos = cache->evict & glamor_glyph_size_to_mask(size);
}
else
evicted_priv = NULL;
break;
}
if (evicted_priv == NULL) {
int count = glamor_glyph_size_to_count(size);
mask = glamor_glyph_count_to_mask(count);
pos = cache->evict & mask;
for (s = 0; s < count; s++) {
GlyphPtr evicted = cache->glyphs[pos + s];
if (evicted != NULL) {
evicted_priv = glamor_glyph_get_private(screen, evicted);
assert(evicted_priv->pos == pos + s);
evicted_priv->cached = FALSE;
cache->glyphs[pos + s] = NULL;
}
}
}
/* And pick a new eviction position */
cache->evict = rand() % GLYPH_CACHE_SIZE;
}
cache->glyphs[pos] = glyph;
priv->cache = cache;
priv->size = size;
priv->pos = pos;
s = pos / ((GLYPH_MAX_SIZE / GLYPH_MIN_SIZE) *
(GLYPH_MAX_SIZE / GLYPH_MIN_SIZE));
priv->x = s % (CACHE_PICTURE_SIZE / GLYPH_MAX_SIZE) * GLYPH_MAX_SIZE;
priv->y = (s / (CACHE_PICTURE_SIZE / GLYPH_MAX_SIZE)) * GLYPH_MAX_SIZE;
for (s = GLYPH_MIN_SIZE; s < GLYPH_MAX_SIZE; s *= 2) {
if (pos & 1)
priv->x += s;
if (pos & 2)
priv->y += s;
pos >>= 2;
}
glamor_glyph_cache_upload_glyph(screen, cache, glyph, priv->x, priv->y);
#ifndef GLYPHS_NO_EDEGEMAP_OVERLAP_CHECK
if (priv->has_edge_map == FALSE && glyph->info.width >= 2)
glamor_glyph_priv_get_edge_map(glyph, priv, glyph_picture);
#endif
priv->cached = TRUE;
*out_x = priv->x;
*out_y = priv->y;
return cache->picture;
}
typedef void (*glyphs_flush_func) (void *arg);
struct glyphs_flush_dst_arg {
CARD8 op;
PicturePtr src;
PicturePtr dst;
glamor_glyph_buffer_t *buffer;
int x_src, y_src;
int x_dst, y_dst;
};
static struct glyphs_flush_dst_arg dst_arg;
static struct glyphs_flush_mask_arg mask_arg;
static glamor_glyph_buffer_t dst_buffer;
static glamor_glyph_buffer_t mask_buffer;
unsigned long long mask_glyphs_cnt = 0;
unsigned long long dst_glyphs_cnt = 0;
#define GLYPHS_DST_MODE_VIA_MASK 0
#define GLYPHS_DST_MODE_VIA_MASK_CACHE 1
#define GLYPHS_DST_MODE_TO_DST 2
#define GLYPHS_DST_MODE_MASK_TO_DST 3
struct glyphs_flush_mask_arg {
PicturePtr mask;
glamor_glyph_buffer_t *buffer;
glamor_glyph_mask_cache_t *maskcache;
unsigned int used_bitmap;
};
static void
glamor_glyphs_flush_mask(struct glyphs_flush_mask_arg *arg)
{
if (arg->buffer->count > 0) {
glamor_composite_glyph_rects(PictOpAdd, arg->buffer->source,
NULL, arg->mask,
arg->buffer->count, arg->buffer->rects);
}
arg->buffer->count = 0;
arg->buffer->source = NULL;
}
static void
glamor_glyphs_flush_dst(struct glyphs_flush_dst_arg *arg)
{
if (!arg->buffer)
return;
if (mask_buffer.count > 0) {
glamor_glyphs_flush_mask(&mask_arg);
}
if (mask_arg.used_bitmap) {
put_mask_cache_bitmap(mask_arg.maskcache, mask_arg.used_bitmap);
mask_arg.used_bitmap = 0;
}
if (arg->buffer->count > 0) {
glamor_composite_glyph_rects(arg->op, arg->src,
arg->buffer->source, arg->dst,
arg->buffer->count,
&arg->buffer->rects[0]);
arg->buffer->count = 0;
arg->buffer->source = NULL;
}
}
static glamor_glyph_cache_result_t
glamor_buffer_glyph(glamor_screen_private *glamor_priv,
glamor_glyph_buffer_t *buffer,
PictFormatShort format,
GlyphPtr glyph, struct glamor_glyph *priv,
int x_glyph, int y_glyph,
int dx, int dy, int w, int h,
int glyphs_dst_mode,
glyphs_flush_func glyphs_flush, void *flush_arg)
{
ScreenPtr screen = glamor_priv->screen;
glamor_composite_rect_t *rect;
PicturePtr source;
int x, y;
glamor_glyph_cache_t *cache;
if (glyphs_dst_mode != GLYPHS_DST_MODE_MASK_TO_DST)
priv = glamor_glyph_get_private(screen, glyph);
if (PICT_FORMAT_BPP(format) == 1)
format = PICT_a8;
cache = &glamor_priv->glyphCaches[PICT_FORMAT_RGB(format) != 0];
if (buffer->source && buffer->source != cache->picture && glyphs_flush) {
(*glyphs_flush) (flush_arg);
glyphs_flush = NULL;
}
if (buffer->count == GLYPH_BUFFER_SIZE && glyphs_flush) {
(*glyphs_flush) (flush_arg);
glyphs_flush = NULL;
}
if (priv && priv->cached) {
rect = &buffer->rects[buffer->count++];
rect->x_src = priv->x + dx;
rect->y_src = priv->y + dy;
if (buffer->source == NULL)
buffer->source = priv->cache->picture;
if (glyphs_dst_mode <= GLYPHS_DST_MODE_VIA_MASK_CACHE)
assert(priv->cache->glyphs[priv->pos] == glyph);
}
else {
assert(glyphs_dst_mode != GLYPHS_DST_MODE_MASK_TO_DST);
if (glyphs_flush)
(*glyphs_flush) (flush_arg);
source = glamor_glyph_cache(glamor_priv, glyph, &x, &y);
if (source != NULL) {
rect = &buffer->rects[buffer->count++];
rect->x_src = x + dx;
rect->y_src = y + dy;
if (buffer->source == NULL)
buffer->source = source;
if (glyphs_dst_mode == GLYPHS_DST_MODE_VIA_MASK_CACHE) {
/* mode 1 means we are using global mask cache,
* thus we have to composite from the cache picture
* to the cache picture, we need a flush here to make
* sure latter we get the corret glyphs data.*/
glamor_make_current(glamor_priv);
glFlush();
}
}
else {
/* Couldn't find the glyph in the cache, use the glyph picture directly */
source = GlyphPicture(glyph)[screen->myNum];
if (buffer->source && buffer->source != source && glyphs_flush)
(*glyphs_flush) (flush_arg);
buffer->source = source;
rect = &buffer->rects[buffer->count++];
rect->x_src = 0 + dx;
rect->y_src = 0 + dy;
}
priv = glamor_glyph_get_private(screen, glyph);
}
rect->x_dst = x_glyph;
rect->y_dst = y_glyph;
if (glyphs_dst_mode != GLYPHS_DST_MODE_MASK_TO_DST) {
rect->x_dst -= glyph->info.x;
rect->y_dst -= glyph->info.y;
}
rect->width = w;
rect->height = h;
if (glyphs_dst_mode > GLYPHS_DST_MODE_VIA_MASK_CACHE) {
rect->x_mask = rect->x_src;
rect->y_mask = rect->y_src;
rect->x_src = dst_arg.x_src + rect->x_dst - dst_arg.x_dst;
rect->y_src = dst_arg.y_src + rect->y_dst - dst_arg.y_dst;
}
return GLAMOR_GLYPH_SUCCESS;
}
static void
glamor_buffer_glyph_clip(glamor_screen_private *glamor_priv,
BoxPtr rects,
int nrect, PictFormatShort format,
GlyphPtr glyph, struct glamor_glyph *priv,
int glyph_x, int glyph_y,
int glyph_dx, int glyph_dy,
int width, int height,
int glyphs_mode,
glyphs_flush_func flush_func, void *arg)
{
int i;
for (i = 0; i < nrect; i++) {
int dst_x, dst_y;
int dx, dy;
int x2, y2;
dst_x = glyph_x - glyph_dx;
dst_y = glyph_y - glyph_dy;
x2 = dst_x + width;
y2 = dst_y + height;
dx = dy = 0;
if (rects[i].y1 >= y2)
break;
if (dst_x < rects[i].x1)
dx = rects[i].x1 - dst_x, dst_x = rects[i].x1;
if (x2 > rects[i].x2)
x2 = rects[i].x2;
if (dst_y < rects[i].y1)
dy = rects[i].y1 - dst_y, dst_y = rects[i].y1;
if (y2 > rects[i].y2)
y2 = rects[i].y2;
if (dst_x < x2 && dst_y < y2) {
glamor_buffer_glyph(glamor_priv,
&dst_buffer,
format,
glyph, priv,
dst_x + glyph_dx,
dst_y + glyph_dy,
dx, dy,
x2 - dst_x, y2 - dst_y,
glyphs_mode, flush_func, arg);
}
}
}
static void
glamor_glyphs_via_mask(CARD8 op,
PicturePtr src,
PicturePtr dst,
PictFormatPtr mask_format,
INT16 x_src,
INT16 y_src,
int nlist, GlyphListPtr list, GlyphPtr *glyphs,
Bool use_mask_cache)
{
PixmapPtr mask_pixmap = 0;
PicturePtr mask;
ScreenPtr screen = dst->pDrawable->pScreen;
int width = 0, height = 0;
int x, y;
int x_dst = list->xOff, y_dst = list->yOff;
int n;
GlyphPtr glyph;
int error;
BoxRec extents = { 0, 0, 0, 0 };
XID component_alpha;
glamor_screen_private *glamor_priv;
int need_free_mask = FALSE;
glamor_glyph_buffer_t buffer;
struct glyphs_flush_mask_arg arg;
glamor_glyph_buffer_t *pmask_buffer;
struct glyphs_flush_mask_arg *pmask_arg;
struct glamor_glyph_mask_cache_entry *mce = NULL;
glamor_glyph_mask_cache_t *maskcache;
glamor_glyph_cache_t *cache;
int glyphs_dst_mode;
glamor_glyph_extents(nlist, list, glyphs, &extents);
if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
return;
glamor_priv = glamor_get_screen_private(screen);
width = extents.x2 - extents.x1;
height = extents.y2 - extents.y1;
if (mask_format->depth == 1) {
PictFormatPtr a8Format = PictureMatchFormat(screen, 8, PICT_a8);
if (a8Format)
mask_format = a8Format;
}
cache = &glamor_priv->glyphCaches
[PICT_FORMAT_RGB(mask_format->format) != 0];
maskcache = glamor_priv->mask_cache[PICT_FORMAT_RGB(mask_format->format) != 0];
x = -extents.x1;
y = -extents.y1;
if (!use_mask_cache || width > (CACHE_PICTURE_SIZE / 4)
|| height > MASK_CACHE_MAX_SIZE) {
new_mask_pixmap:
mask_pixmap = glamor_create_pixmap(screen, width, height,
mask_format->depth,
CREATE_PIXMAP_USAGE_SCRATCH);
if (!mask_pixmap) {
glamor_destroy_pixmap(mask_pixmap);
return;
}
glamor_solid(mask_pixmap, 0, 0, width, height, 0);
component_alpha = NeedsComponent(mask_format->format);
mask = CreatePicture(0, &mask_pixmap->drawable,
mask_format, CPComponentAlpha,
&component_alpha, serverClient, &error);
if (!mask)
return;
need_free_mask = TRUE;
pmask_arg = &arg;
pmask_buffer = &buffer;
pmask_buffer->count = 0;
pmask_buffer->source = NULL;
pmask_arg->used_bitmap = 0;
glyphs_dst_mode = GLYPHS_DST_MODE_VIA_MASK;
}
else {
int retry_cnt = 0;
retry:
mce = get_mask_cache(maskcache,
(width + MASK_CACHE_MAX_SIZE -
1) / MASK_CACHE_MAX_SIZE);
if (mce == NULL) {
glamor_glyphs_flush_dst(&dst_arg);
retry_cnt++;
if (retry_cnt > 2) {
assert(0);
goto new_mask_pixmap;
}
goto retry;
}
mask = cache->picture;
x += mce->x;
y += mce->y;
mce->width = (width + MASK_CACHE_MAX_SIZE - 1) / MASK_CACHE_MAX_SIZE;
mce->height = 1;
if (mask_arg.mask && mask_arg.mask != mask && mask_buffer.count != 0)
glamor_glyphs_flush_dst(&dst_arg);
pmask_arg = &mask_arg;
pmask_buffer = &mask_buffer;
pmask_arg->maskcache = maskcache;
glyphs_dst_mode = GLYPHS_DST_MODE_VIA_MASK_CACHE;
}
pmask_arg->mask = mask;
pmask_arg->buffer = pmask_buffer;
while (nlist--) {
x += list->xOff;
y += list->yOff;
n = list->len;
mask_glyphs_cnt += n;
while (n--) {
glyph = *glyphs++;
if (glyph->info.width > 0 && glyph->info.height > 0) {
glyphs_flush_func flush_func;
void *temp_arg;
if (need_free_mask) {
if (pmask_buffer->count)
flush_func =
(glyphs_flush_func) glamor_glyphs_flush_mask;
else
flush_func = NULL;
temp_arg = pmask_arg;
}
else {
/* If we are using global mask cache, then we need to
* flush dst instead of mask. As some dst depends on the
* previous mask result. Just flush mask can't get all previous's
* overlapped glyphs.*/
if (dst_buffer.count || mask_buffer.count)
flush_func =
(glyphs_flush_func) glamor_glyphs_flush_dst;
else
flush_func = NULL;
temp_arg = &dst_arg;
}
glamor_buffer_glyph(glamor_priv, pmask_buffer,
mask_format->format,
glyph, NULL, x, y,
0, 0,
glyph->info.width, glyph->info.height,
glyphs_dst_mode,
flush_func, (void *) temp_arg);
}
x += glyph->info.xOff;
y += glyph->info.yOff;
}
list++;
}
x = extents.x1;
y = extents.y1;
if (need_free_mask) {
glamor_glyphs_flush_mask(pmask_arg);
CompositePicture(op,
src,
mask,
dst,
x_src + x - x_dst,
y_src + y - y_dst, 0, 0, x, y, width, height);
FreePicture(mask, 0);
glamor_destroy_pixmap(mask_pixmap);
}
else {
struct glamor_glyph priv;
glyphs_flush_func flush_func;
BoxPtr rects;
int nrect;
priv.cache = cache;
priv.x = mce->x;
priv.y = mce->y;
priv.cached = TRUE;
rects = REGION_RECTS(dst->pCompositeClip);
nrect = REGION_NUM_RECTS(dst->pCompositeClip);
pmask_arg->used_bitmap |= ((1 << mce->width) - 1) << mce->idx;
dst_arg.op = op;
dst_arg.src = src;
dst_arg.dst = dst;
dst_arg.buffer = &dst_buffer;
dst_arg.x_src = x_src;
dst_arg.y_src = y_src;
dst_arg.x_dst = x_dst;
dst_arg.y_dst = y_dst;
if (dst_buffer.source == NULL) {
dst_buffer.source = cache->picture;
}
else if (dst_buffer.source != cache->picture) {
glamor_glyphs_flush_dst(&dst_arg);
dst_buffer.source = cache->picture;
}
x += dst->pDrawable->x;
y += dst->pDrawable->y;
if (dst_buffer.count || mask_buffer.count)
flush_func = (glyphs_flush_func) glamor_glyphs_flush_dst;
else
flush_func = NULL;
glamor_buffer_glyph_clip(glamor_priv,
rects, nrect,
mask_format->format,
NULL, &priv,
x, y,
0, 0,
width, height,
GLYPHS_DST_MODE_MASK_TO_DST,
flush_func, (void *) &dst_arg);
}
}
static void
glamor_glyphs_to_dst(CARD8 op,
PicturePtr src,
PicturePtr dst,
INT16 x_src,
INT16 y_src,
int nlist, GlyphListPtr list, GlyphPtr *glyphs)
{
ScreenPtr screen = dst->pDrawable->pScreen;
int x = 0, y = 0;
int x_dst = list->xOff, y_dst = list->yOff;
int n;
GlyphPtr glyph;
BoxPtr rects;
int nrect;
glamor_screen_private *glamor_priv;
rects = REGION_RECTS(dst->pCompositeClip);
nrect = REGION_NUM_RECTS(dst->pCompositeClip);
glamor_priv = glamor_get_screen_private(screen);
dst_arg.op = op;
dst_arg.src = src;
dst_arg.dst = dst;
dst_arg.buffer = &dst_buffer;
dst_arg.x_src = x_src;
dst_arg.y_src = y_src;
dst_arg.x_dst = x_dst;
dst_arg.y_dst = y_dst;
x = dst->pDrawable->x;
y = dst->pDrawable->y;
while (nlist--) {
x += list->xOff;
y += list->yOff;
n = list->len;
dst_glyphs_cnt += n;
while (n--) {
glyph = *glyphs++;
if (glyph->info.width > 0 && glyph->info.height > 0) {
glyphs_flush_func flush_func;
if (dst_buffer.count || mask_buffer.count)
flush_func = (glyphs_flush_func) glamor_glyphs_flush_dst;
else
flush_func = NULL;
glamor_buffer_glyph_clip(glamor_priv,
rects, nrect,
(GlyphPicture(glyph)[screen->myNum])->
format, glyph, NULL, x, y,
glyph->info.x, glyph->info.y,
glyph->info.width, glyph->info.height,
GLYPHS_DST_MODE_TO_DST, flush_func,
(void *) &dst_arg);
}
x += glyph->info.xOff;
y += glyph->info.yOff;
}
list++;
}
}
#define MAX_FIXED_SIZE
static void
glamor_glyphs_reset_buffer(glamor_glyph_buffer_t *buffer)
{
buffer->count = 0;
buffer->source = NULL;
}
static Bool
_glamor_glyphs(CARD8 op,
PicturePtr src,
PicturePtr dst,
PictFormatPtr mask_format,
INT16 x_src,
INT16 y_src, int nlist, GlyphListPtr list,
GlyphPtr *glyphs, Bool fallback)
{
PictFormatShort format;
int fixed_size, fixed_cnt = 0;
struct glamor_glyph_list *fixed_list = NULL;
Bool need_free_list = FALSE;
#ifndef GLYPHS_NO_EDEGEMAP_OVERLAP_CHECK
Bool check_fake_overlap = TRUE;
if (!(op == PictOpOver || op == PictOpAdd || op == PictOpXor)) {
/* C = (0,0,0,0) D = glyphs , SRC = A, DEST = B (faked overlapped glyphs, overlapped with (0,0,0,0)).
* For those op, (A IN (C ADD D)) OP B != (A IN D) OP ((A IN C) OP B)
* or (A IN (D ADD C)) OP B != (A IN C) OP ((A IN D) OP B)
* We need to split the faked regions to three or two, and composite the disoverlapped small
* boxes one by one. For other Ops, it's safe to composite the whole box. */
check_fake_overlap = FALSE;
}
#else
Bool check_fake_overlap = FALSE;
#endif
if (mask_format)
format = mask_format->depth << 24 | mask_format->format;
else
format = 0;
fixed_size = 32;
glamor_glyphs_reset_buffer(&dst_buffer);
if (!mask_format || (((nlist == 1 && list->len == 1) || op == PictOpAdd)
&& (dst->format ==
((mask_format->depth << 24) | mask_format->
format)))) {
glamor_glyphs_to_dst(op, src, dst, x_src, y_src, nlist, list, glyphs);
goto last_flush;
}
glamor_glyphs_reset_buffer(&mask_buffer);
/* We have mask_format. Need to check the real overlap or not. */
format = mask_format->depth << 24 | mask_format->format;
fixed_list = calloc(fixed_size, sizeof(*fixed_list));
if (_X_UNLIKELY(fixed_list == NULL))
fixed_size = 0;
fixed_cnt = glamor_glyphs_intersect(nlist, list, glyphs,
format, dst->pDrawable->pScreen,
check_fake_overlap,
fixed_list, fixed_size);
if (fixed_cnt == 0)
mask_format = NULL;
need_free_list = TRUE;
if (fixed_cnt <= 0) {
if (mask_format == NULL) {
glamor_glyphs_to_dst(op, src, dst, x_src, y_src, nlist,
list, glyphs);
goto last_flush;
}
else {
glamor_glyphs_via_mask(op, src, dst, mask_format,
x_src, y_src, nlist, list, glyphs, FALSE);
goto free_fixed_list;
}
}
else {
/* We have splitted the original list to serval list, some are overlapped
* and some are non-overlapped. For the non-overlapped, we render it to
* dst directly. For the overlapped, we render it to mask picture firstly,
* then render the mask to dst. If we can use mask cache which is in the
* glyphs cache's last row, we can accumulate the rendering of mask to dst
* with the other dst_buffer's rendering operations thus can reduce the call
* of glDrawElements.
*
* */
struct glamor_glyph_list *saved_list;
saved_list = fixed_list;
mask_arg.used_bitmap = 0;
while (fixed_cnt--) {
if (fixed_list->type == NON_INTERSECTED) {
glamor_glyphs_to_dst(op, src, dst,
x_src, y_src,
fixed_list->nlist,
fixed_list->list, fixed_list->glyphs);
}
else
glamor_glyphs_via_mask(op, src, dst,
mask_format, x_src, y_src,
fixed_list->nlist,
fixed_list->list,
fixed_list->glyphs, TRUE);
free(fixed_list->list);
fixed_list++;
}
free(saved_list);
need_free_list = FALSE;
}
last_flush:
if (dst_buffer.count || mask_buffer.count)
glamor_glyphs_flush_dst(&dst_arg);
free_fixed_list:
if (need_free_list) {
assert(fixed_cnt <= 0);
free(fixed_list);
}
return TRUE;
}
void
glamor_glyphs(CARD8 op,
PicturePtr src,
PicturePtr dst,
PictFormatPtr mask_format,
INT16 x_src,
INT16 y_src, int nlist, GlyphListPtr list, GlyphPtr *glyphs)
{
_glamor_glyphs(op, src, dst, mask_format, x_src,
y_src, nlist, list, glyphs, TRUE);
}
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