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-rw-r--r--indra/llrender/llfontfreetype.cpp23
-rw-r--r--indra/llrender/llfontfreetype.h2
-rw-r--r--indra/llrender/llfontgl.cpp57
-rw-r--r--indra/llui/llkeywords.cpp82
-rw-r--r--indra/llui/llkeywords.h29
5 files changed, 179 insertions, 14 deletions
diff --git a/indra/llrender/llfontfreetype.cpp b/indra/llrender/llfontfreetype.cpp
index 22fad792da..a86bbbffff 100644
--- a/indra/llrender/llfontfreetype.cpp
+++ b/indra/llrender/llfontfreetype.cpp
@@ -270,6 +270,14 @@ F32 LLFontFreetype::getXAdvance(llwchar wch) const
return (F32)mFontBitmapCachep->getMaxCharWidth();
}
+F32 LLFontFreetype::getXAdvance(const LLFontGlyphInfo* glyph) const
+{
+ if (mFTFace == NULL)
+ return 0.0;
+
+ return glyph->mXAdvance;
+}
+
F32 LLFontFreetype::getXKerning(llwchar char_left, llwchar char_right) const
{
if (mFTFace == NULL)
@@ -289,6 +297,21 @@ F32 LLFontFreetype::getXKerning(llwchar char_left, llwchar char_right) const
return delta.x*(1.f/64.f);
}
+F32 LLFontFreetype::getXKerning(const LLFontGlyphInfo* left_glyph_info, const LLFontGlyphInfo* right_glyph_info) const
+{
+ if (mFTFace == NULL)
+ return 0.0;
+
+ U32 left_glyph = left_glyph_info ? left_glyph_info->mGlyphIndex : 0;
+ U32 right_glyph = right_glyph_info ? right_glyph_info->mGlyphIndex : 0;
+
+ FT_Vector delta;
+
+ llverify(!FT_Get_Kerning(mFTFace, left_glyph, right_glyph, ft_kerning_unfitted, &delta));
+
+ return delta.x*(1.f/64.f);
+}
+
BOOL LLFontFreetype::hasGlyph(llwchar wch) const
{
llassert(!mIsFallback);
diff --git a/indra/llrender/llfontfreetype.h b/indra/llrender/llfontfreetype.h
index 7a5d029038..f60d09316d 100644
--- a/indra/llrender/llfontfreetype.h
+++ b/indra/llrender/llfontfreetype.h
@@ -128,7 +128,9 @@ public:
};
F32 getXAdvance(llwchar wc) const;
+ F32 getXAdvance(const LLFontGlyphInfo* glyph) const;
F32 getXKerning(llwchar char_left, llwchar char_right) const; // Get the kerning between the two characters
+ F32 getXKerning(const LLFontGlyphInfo* left_glyph_info, const LLFontGlyphInfo* right_glyph_info) const; // Get the kerning between the two characters
LLFontGlyphInfo* getGlyphInfo(llwchar wch) const;
diff --git a/indra/llrender/llfontgl.cpp b/indra/llrender/llfontgl.cpp
index b6a6b448ee..f1f86fd638 100644
--- a/indra/llrender/llfontgl.cpp
+++ b/indra/llrender/llfontgl.cpp
@@ -249,11 +249,18 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
// Remember last-used texture to avoid unnecesssary bind calls.
LLImageGL *last_bound_texture = NULL;
+ const LLFontGlyphInfo* next_glyph = NULL;
+
for (i = begin_offset; i < begin_offset + length; i++)
{
llwchar wch = wstr[i];
- const LLFontGlyphInfo* fgi= mFontFreetype->getGlyphInfo(wch);
+ const LLFontGlyphInfo* fgi = next_glyph;
+ next_glyph = NULL;
+ if(!fgi)
+ {
+ fgi = mFontFreetype->getGlyphInfo(wch);
+ }
if (!fgi)
{
llerrs << "Missing Glyph Info" << llendl;
@@ -295,7 +302,8 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
if (next_char && (next_char < LAST_CHARACTER))
{
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, next_char);
+ next_glyph = mFontFreetype->getGlyphInfo(next_char);
+ cur_x += mFontFreetype->getXKerning(fgi, next_glyph);
}
// Round after kerning.
@@ -435,14 +443,21 @@ F32 LLFontGL::getWidthF32(const llwchar* wchars, S32 begin_offset, S32 max_chars
F32 cur_x = 0;
const S32 max_index = begin_offset + max_chars;
+ const LLFontGlyphInfo* next_glyph = NULL;
+
F32 width_padding = 0.f;
for (S32 i = begin_offset; i < max_index && wchars[i] != 0; i++)
{
llwchar wch = wchars[i];
- const LLFontGlyphInfo* fgi= mFontFreetype->getGlyphInfo(wch);
+ const LLFontGlyphInfo* fgi = next_glyph;
+ next_glyph = NULL;
+ if(!fgi)
+ {
+ fgi = mFontFreetype->getGlyphInfo(wch);
+ }
- F32 advance = mFontFreetype->getXAdvance(wch);
+ F32 advance = mFontFreetype->getXAdvance(fgi);
// for the last character we want to measure the greater of its width and xadvance values
// so keep track of the difference between these values for the each character we measure
@@ -459,7 +474,8 @@ F32 LLFontGL::getWidthF32(const llwchar* wchars, S32 begin_offset, S32 max_chars
&& (next_char < LAST_CHARACTER))
{
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, next_char);
+ next_glyph = mFontFreetype->getGlyphInfo(next_char);
+ cur_x += mFontFreetype->getXKerning(fgi, next_glyph);
}
// Round after kerning.
cur_x = (F32)llround(cur_x);
@@ -492,6 +508,8 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
// avoid S32 overflow when max_pixels == S32_MAX by staying in floating point
F32 scaled_max_pixels = ceil(max_pixels * sScaleX);
F32 width_padding = 0.f;
+
+ LLFontGlyphInfo* next_glyph = NULL;
S32 i;
for (i=0; (i < max_chars); i++)
@@ -534,8 +552,13 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
in_word = TRUE;
}
}
-
- LLFontGlyphInfo* fgi = mFontFreetype->getGlyphInfo(wch);
+
+ LLFontGlyphInfo* fgi = next_glyph;
+ next_glyph = NULL;
+ if(!fgi)
+ {
+ fgi = mFontFreetype->getGlyphInfo(wch);
+ }
// account for glyphs that run beyond the starting point for the next glyphs
width_padding = llmax( 0.f, // always use positive padding amount
@@ -554,7 +577,8 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
if (((i+1) < max_chars) && wchars[i+1])
{
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, wchars[i+1]);
+ next_glyph = mFontFreetype->getGlyphInfo(wchars[i+1]);
+ cur_x += mFontFreetype->getXKerning(fgi, next_glyph);
}
// Round after kerning.
@@ -660,6 +684,8 @@ S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 t
const S32 max_index = begin_offset + llmin(S32_MAX - begin_offset, max_chars);
F32 scaled_max_pixels = max_pixels * sScaleX;
+
+ const LLFontGlyphInfo* next_glyph = NULL;
S32 pos;
for (pos = begin_offset; pos < max_index; pos++)
@@ -669,7 +695,15 @@ S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 t
{
break; // done
}
- F32 char_width = mFontFreetype->getXAdvance(wch);
+
+ const LLFontGlyphInfo* glyph = next_glyph;
+ next_glyph = NULL;
+ if(!glyph)
+ {
+ glyph = mFontFreetype->getGlyphInfo(wch);
+ }
+
+ F32 char_width = mFontFreetype->getXAdvance(glyph);
if (round)
{
@@ -695,11 +729,12 @@ S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 t
if (((pos + 1) < max_index)
&& (wchars[(pos + 1)]))
{
- llwchar next_char = wchars[pos + 1];
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, next_char);
+ next_glyph = mFontFreetype->getGlyphInfo(wchars[pos + 1]);
+ cur_x += mFontFreetype->getXKerning(glyph, next_glyph);
}
+
// Round after kerning.
cur_x = llround(cur_x);
}
diff --git a/indra/llui/llkeywords.cpp b/indra/llui/llkeywords.cpp
index ede32084d0..75342afbe2 100644
--- a/indra/llui/llkeywords.cpp
+++ b/indra/llui/llkeywords.cpp
@@ -218,6 +218,86 @@ void LLKeywords::addToken(LLKeywordToken::TOKEN_TYPE type,
llassert(0);
}
}
+LLKeywords::WStringMapIndex::WStringMapIndex(const WStringMapIndex& other)
+{
+ if(other.mOwner)
+ {
+ copyData(other.mData, other.mLength);
+ }
+ else
+ {
+ mOwner = false;
+ mLength = other.mLength;
+ mData = other.mData;
+ }
+}
+
+LLKeywords::WStringMapIndex::WStringMapIndex(const LLWString& str)
+{
+ copyData(str.data(), str.size());
+}
+
+LLKeywords::WStringMapIndex::WStringMapIndex(const llwchar *start, size_t length):
+mData(start), mLength(length), mOwner(false)
+{
+}
+
+LLKeywords::WStringMapIndex::~WStringMapIndex()
+{
+ if(mOwner)
+ delete[] mData;
+}
+
+void LLKeywords::WStringMapIndex::copyData(const llwchar *start, size_t length)
+{
+ llwchar *data = new llwchar[length];
+ memcpy((void*)data, (const void*)start, length * sizeof(llwchar));
+
+ mOwner = true;
+ mLength = length;
+ mData = data;
+}
+
+bool LLKeywords::WStringMapIndex::operator<(const LLKeywords::WStringMapIndex &other) const
+{
+ // NOTE: Since this is only used to organize a std::map, it doesn't matter if it uses correct collate order or not.
+ // The comparison only needs to strictly order all possible strings, and be stable.
+
+ bool result = false;
+ const llwchar* self_iter = mData;
+ const llwchar* self_end = mData + mLength;
+ const llwchar* other_iter = other.mData;
+ const llwchar* other_end = other.mData + other.mLength;
+
+ while(true)
+ {
+ if(other_iter >= other_end)
+ {
+ // We've hit the end of other.
+ // This covers two cases: other being shorter than self, or the strings being equal.
+ // In either case, we want to return false.
+ result = false;
+ break;
+ }
+ else if(self_iter >= self_end)
+ {
+ // self is shorter than other.
+ result = true;
+ break;
+ }
+ else if(*self_iter != *other_iter)
+ {
+ // The current character differs. The strings are not equal.
+ result = *self_iter < *other_iter;
+ break;
+ }
+
+ self_iter++;
+ other_iter++;
+ }
+
+ return result;
+}
LLColor3 LLKeywords::readColor( const std::string& s )
{
@@ -429,7 +509,7 @@ void LLKeywords::findSegments(std::vector<LLTextSegmentPtr>* seg_list, const LLW
S32 seg_len = p - cur;
if( seg_len > 0 )
{
- LLWString word( cur, 0, seg_len );
+ WStringMapIndex word( cur, seg_len );
word_token_map_t::iterator map_iter = mWordTokenMap.find(word);
if( map_iter != mWordTokenMap.end() )
{
diff --git a/indra/llui/llkeywords.h b/indra/llui/llkeywords.h
index 53377869ca..e5b66dfa56 100644
--- a/indra/llui/llkeywords.h
+++ b/indra/llui/llkeywords.h
@@ -92,8 +92,33 @@ public:
const std::string& key,
const LLColor3& color,
const std::string& tool_tip = LLStringUtil::null);
-
- typedef std::map<LLWString, LLKeywordToken*> word_token_map_t;
+
+ // This class is here as a performance optimization.
+ // The word token map used to be defined as std::map<LLWString, LLKeywordToken*>.
+ // This worked, but caused a performance bottleneck due to memory allocation and string copies
+ // because it's not possible to search such a map without creating an LLWString.
+ // Using this class as the map index instead allows us to search using segments of an existing
+ // text run without copying them first, which greatly reduces overhead in LLKeywords::findSegments().
+ class WStringMapIndex
+ {
+ public:
+ // copy constructor
+ WStringMapIndex(const WStringMapIndex& other);
+ // constructor from a string (copies the string's data into the new object)
+ WStringMapIndex(const LLWString& str);
+ // constructor from pointer and length
+ // NOTE: does NOT copy data, caller must ensure that the lifetime of the pointer exceeds that of the new object!
+ WStringMapIndex(const llwchar *start, size_t length);
+ ~WStringMapIndex();
+ bool operator<(const WStringMapIndex &other) const;
+ private:
+ void copyData(const llwchar *start, size_t length);
+ const llwchar *mData;
+ size_t mLength;
+ bool mOwner;
+ };
+
+ typedef std::map<WStringMapIndex, LLKeywordToken*> word_token_map_t;
typedef word_token_map_t::const_iterator keyword_iterator_t;
keyword_iterator_t begin() const { return mWordTokenMap.begin(); }
keyword_iterator_t end() const { return mWordTokenMap.end(); }
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 15:14:37 +0000