SL-16141 Load fonts and generate glyphs on startup

3 files changed, 31 insertions, 9 deletions

diff --git a/indra/llrender/llfontgl.cpp b/indra/llrender/llfontgl.cpp
index 86a4c35e6d..266399d212 100644
--- a/indra/llrender/llfontgl.cpp
+++ b/indra/llrender/llfontgl.cpp
@@ -547,9 +547,19 @@ F32 LLFontGL::getWidthF32(const llwchar* wchars, S32 begin_offset, S32 max_chars
 	return cur_x / sScaleX;
 }
 
+void LLFontGL::generateASCIIglyphs()
+{
+    LL_PROFILE_ZONE_SCOPED
+    for (U32 i = 32; (i < 127); i++)
+    {
+        mFontFreetype->getGlyphInfo(i);
+    }
+}
+
 // Returns the max number of complete characters from text (up to max_chars) that can be drawn in max_pixels
 S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_chars, EWordWrapStyle end_on_word_boundary) const
 {
+	LL_PROFILE_ZONE_SCOPED
 	if (!wchars || !wchars[0] || max_chars == 0)
 	{
 		return 0;
@@ -829,6 +839,8 @@ void LLFontGL::initClass(F32 screen_dpi, F32 x_scale, F32 y_scale, const std::st
 	{
 		sFontRegistry->reset();
 	}
+
+	LLFontGL::loadDefaultFonts();
 }
 
 // Force standard fonts to get generated up front.
@@ -838,6 +850,7 @@ void LLFontGL::initClass(F32 screen_dpi, F32 x_scale, F32 y_scale, const std::st
 // static
 bool LLFontGL::loadDefaultFonts()
 {
+	LL_PROFILE_ZONE_SCOPED
 	bool succ = true;
 	succ &= (NULL != getFontSansSerifSmall());
 	succ &= (NULL != getFontSansSerif());
@@ -845,10 +858,18 @@ bool LLFontGL::loadDefaultFonts()
 	succ &= (NULL != getFontSansSerifHuge());
 	succ &= (NULL != getFontSansSerifBold());
 	succ &= (NULL != getFontMonospace());
-	succ &= (NULL != getFontExtChar());
 	return succ;
 }
 
+void LLFontGL::loadCommonFonts()
+{
+    LL_PROFILE_ZONE_SCOPED
+    getFont(LLFontDescriptor("SansSerif", "Small", BOLD));
+    getFont(LLFontDescriptor("SansSerif", "Large", BOLD));
+    getFont(LLFontDescriptor("SansSerif", "Huge", BOLD));
+    getFont(LLFontDescriptor("Monospace", "Medium", 0));
+}
+
 // static
 void LLFontGL::destroyDefaultFonts()
 {
@@ -1015,7 +1036,7 @@ LLFontGL* LLFontGL::getFontSansSerifBig()
 //static 
 LLFontGL* LLFontGL::getFontSansSerifHuge()
 {
-	static LLFontGL* fontp = getFont(LLFontDescriptor("SansSerif","Large",0));
+	static LLFontGL* fontp = getFont(LLFontDescriptor("SansSerif","Huge",0));
 	return fontp;
 }
 
@@ -1026,12 +1047,6 @@ LLFontGL* LLFontGL::getFontSansSerifBold()
 	return fontp;
 }
 
-//static
-LLFontGL* LLFontGL::getFontExtChar()
-{
-	return getFontSansSerif();
-}
-
 //static 
 LLFontGL* LLFontGL::getFont(const LLFontDescriptor& desc)
 {
diff --git a/indra/llrender/llfontgl.h b/indra/llrender/llfontgl.h
index 10891faed9..3b58a37d33 100644
--- a/indra/llrender/llfontgl.h
+++ b/indra/llrender/llfontgl.h
@@ -160,12 +160,15 @@ public:
 
 	const LLFontDescriptor& getFontDesc() const;
 
+	void generateASCIIglyphs();
+
 
 	static void initClass(F32 screen_dpi, F32 x_scale, F32 y_scale, const std::string& app_dir, bool create_gl_textures = true);
 
 	// Load sans-serif, sans-serif-small, etc.
 	// Slow, requires multiple seconds to load fonts.
 	static bool loadDefaultFonts();
+    static void loadCommonFonts();
 	static void	destroyDefaultFonts();
 	static void destroyAllGL();
 
@@ -190,7 +193,6 @@ public:
 	static LLFontGL* getFontSansSerifBig();
 	static LLFontGL* getFontSansSerifHuge();
 	static LLFontGL* getFontSansSerifBold();
-	static LLFontGL* getFontExtChar();
 	static LLFontGL* getFont(const LLFontDescriptor& desc);
 	// Use with legacy names like "SANSSERIF_SMALL" or "OCRA"
 	static LLFontGL* getFontByName(const std::string& name);
diff --git a/indra/llrender/llfontregistry.cpp b/indra/llrender/llfontregistry.cpp
index 33a33af160..bc1a2f8887 100644
--- a/indra/llrender/llfontregistry.cpp
+++ b/indra/llrender/llfontregistry.cpp
@@ -597,6 +597,11 @@ LLFontGL *LLFontRegistry::getFont(const LLFontDescriptor& desc)
 					<<" style=[" << ((S32) desc.getStyle()) << "]"
 					<< " size=[" << desc.getSize() << "]" << LL_ENDL;
 		}
+		else
+		{
+			//generate glyphs for ASCII chars to avoid stalls later
+			fontp->generateASCIIglyphs();
+		}
 		return fontp;
 	}
 }