bool GrFontCache::freeUnusedPlot(GrTextStrike* preserveStrike, const GrGlyph* glyph) {
SkASSERT(preserveStrike);
int index = mask_format_to_atlas_index(glyph->fMaskFormat);
GrAtlas* atlas = fAtlases[index];
GrPlot* plot = atlas->getUnusedPlot();
if (NULL == plot) {
return false;
}
plot->resetRects();
GrTextStrike* strike = fHead;
while (strike) {
GrTextStrike* strikeToPurge = strike;
strike = strikeToPurge->fNext;
strikeToPurge->removePlot(plot);
// clear out any empty strikes (except this one)
if (strikeToPurge != preserveStrike && strikeToPurge->fPlotUsage.isEmpty()) {
this->purgeStrike(strikeToPurge);
}
}
#if FONT_CACHE_STATS
++g_PurgeCount;
#endif
return true;
}
bool GrFontCache::freeUnusedPlot(GrTextStrike* preserveStrike) {
SkASSERT(preserveStrike);
GrAtlas* atlas = preserveStrike->fAtlas;
GrPlot* plot = atlas->getUnusedPlot();
if (NULL == plot) {
return false;
}
plot->resetRects();
GrTextStrike* strike = fHead;
GrMaskFormat maskFormat = preserveStrike->fMaskFormat;
while (strike) {
if (maskFormat != strike->fMaskFormat) {
strike = strike->fNext;
continue;
}
GrTextStrike* strikeToPurge = strike;
strike = strikeToPurge->fNext;
strikeToPurge->removePlot(plot);
// clear out any empty strikes (except this one)
if (strikeToPurge != preserveStrike && strikeToPurge->fPlotUsage.isEmpty()) {
this->purgeStrike(strikeToPurge);
}
}
#if FONT_CACHE_STATS
++g_PurgeCount;
#endif
return true;
}
GrAtlas* GrAtlasMgr::addToAtlas(GrAtlas** atlas,
int width, int height, const void* image,
GrMaskFormat format,
GrIPoint16* loc) {
SkASSERT(NULL == *atlas || (*atlas)->getMaskFormat() == format);
// iterate through entire atlas list, see if we can find a hole
GrAtlas* atlasIter = *atlas;
while (atlasIter) {
if (atlasIter->addSubImage(width, height, image, loc)) {
return atlasIter;
}
atlasIter = atlasIter->fNext;
}
// If the above fails, then either we have no starting atlas, or the current
// atlas list is full. Either way we need to allocate a new atlas
GrIPoint16 plot;
if (!fPlotMgr[format]->newPlot(&plot)) {
return NULL;
}
SkASSERT(0 == kA8_GrMaskFormat);
SkASSERT(1 == kA565_GrMaskFormat);
if (NULL == fTexture[format]) {
// TODO: Update this to use the cache rather than directly creating a texture.
GrTextureDesc desc;
desc.fFlags = kDynamicUpdate_GrTextureFlagBit;
desc.fWidth = GR_ATLAS_TEXTURE_WIDTH;
desc.fHeight = GR_ATLAS_TEXTURE_HEIGHT;
desc.fConfig = maskformat2pixelconfig(format);
fTexture[format] = fGpu->createTexture(desc, NULL, 0);
if (NULL == fTexture[format]) {
return NULL;
}
}
GrAtlas* newAtlas = SkNEW_ARGS(GrAtlas, (this, plot.fX, plot.fY, format));
if (!newAtlas->addSubImage(width, height, image, loc)) {
delete newAtlas;
return NULL;
}
// new atlas, put at head
newAtlas->fNext = *atlas;
*atlas = newAtlas;
return newAtlas;
}
GrAtlas* GrAtlasMgr::addToAtlas(GrAtlas* atlas,
int width, int height, const void* image,
GrMaskFormat format,
GrIPoint16* loc) {
GrAssert(NULL == atlas || atlas->getMaskFormat() == format);
if (atlas && atlas->addSubImage(width, height, image, loc)) {
return atlas;
}
// If the above fails, then either we have no starting atlas, or the current
// one is full. Either way we need to allocate a new atlas
GrIPoint16 plot;
if (!fPlotMgr->newPlot(&plot)) {
return NULL;
}
GrAssert(0 == kA8_GrMaskFormat);
GrAssert(1 == kA565_GrMaskFormat);
if (NULL == fTexture[format]) {
GrTextureDesc desc = {
kDynamicUpdate_GrTextureFlagBit,
GR_ATLAS_TEXTURE_WIDTH,
GR_ATLAS_TEXTURE_HEIGHT,
maskformat2pixelconfig(format),
0 // samples
};
fTexture[format] = fGpu->createTexture(desc, NULL, 0);
if (NULL == fTexture[format]) {
return NULL;
}
}
GrAtlas* newAtlas = new GrAtlas(this, plot.fX, plot.fY, format);
if (!newAtlas->addSubImage(width, height, image, loc)) {
delete newAtlas;
return NULL;
}
newAtlas->fNext = atlas;
return newAtlas;
}
bool GrAtlas::RemoveUnusedAtlases(GrAtlasMgr* atlasMgr, GrAtlas** startAtlas) {
// GrAtlas** is used so that a pointer to the head element can be passed in and
// modified when the first element is deleted
GrAtlas** atlasRef = startAtlas;
GrAtlas* atlas = *startAtlas;
bool removed = false;
while (NULL != atlas) {
if (atlas->drawToken().isIssued()) {
*atlasRef = atlas->fNext;
atlasMgr->deleteAtlas(atlas);
atlas = *atlasRef;
removed = true;
} else {
atlasRef = &atlas->fNext;
atlas = atlas->fNext;
}
}
return removed;
}
