viewer#2411 A bit more coverage for font buffer

13 files changed, 200 insertions, 78 deletions

diff --git a/indra/llrender/llfontgl.cpp b/indra/llrender/llfontgl.cpp
index 7d74bb3e46..9721b020c7 100644
--- a/indra/llrender/llfontgl.cpp
+++ b/indra/llrender/llfontgl.cpp
@@ -34,7 +34,6 @@
 #include "llfontbitmapcache.h"
 #include "llfontregistry.h"
 #include "llgl.h"
-#include "llglslshader.h"
 #include "llimagegl.h"
 #include "llrender.h"
 #include "llstl.h"
@@ -376,6 +375,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
         cur_render_x = cur_x;
         cur_render_y = cur_y;
     }
+
     gGL.begin(LLRender::QUADS);
     {
         gGL.vertexBatchPreTransformed(vertices, uvs, colors, glyph_count * 4);
@@ -503,6 +503,7 @@ F32 LLFontGL::getWidthF32(const std::string& utf8text, S32 begin_offset, S32 max
 
 F32 LLFontGL::getWidthF32(const llwchar* wchars, S32 begin_offset, S32 max_chars, bool no_padding) const
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
     const S32 LAST_CHARACTER = LLFontFreetype::LAST_CHAR_FULL;
 
     F32 cur_x = 0;
diff --git a/indra/llrender/llfontvertexbuffer.cpp b/indra/llrender/llfontvertexbuffer.cpp
index 284762dc94..417bacd69d 100644
--- a/indra/llrender/llfontvertexbuffer.cpp
+++ b/indra/llrender/llfontvertexbuffer.cpp
@@ -50,6 +50,60 @@ S32 LLFontVertexBuffer::render(
     const LLFontGL* fontp,
     const LLWString& text,
     S32 begin_offset,
+    LLRect rect,
+    const LLColor4& color,
+    LLFontGL::HAlign halign, LLFontGL::VAlign valign,
+    U8 style,
+    LLFontGL::ShadowType shadow,
+    S32 max_chars, S32 max_pixels,
+    F32* right_x,
+    bool use_ellipses,
+    bool use_color)
+{
+    LLRectf rect_float((F32)rect.mLeft, (F32)rect.mTop, (F32)rect.mRight, (F32)rect.mBottom);
+    return render(fontp, text, begin_offset, rect_float, color, halign, valign, style, shadow, max_chars, right_x, use_ellipses, use_color);
+}
+
+S32 LLFontVertexBuffer::render(
+    const LLFontGL* fontp,
+    const LLWString& text,
+    S32 begin_offset,
+    LLRectf rect,
+    const LLColor4& color,
+    LLFontGL::HAlign halign, LLFontGL::VAlign valign,
+    U8 style,
+    LLFontGL::ShadowType shadow,
+    S32 max_chars,
+    F32* right_x,
+    bool use_ellipses,
+    bool use_color)
+{
+    F32 x = rect.mLeft;
+    F32 y = 0.f;
+
+    switch (valign)
+    {
+    case LLFontGL::TOP:
+        y = rect.mTop;
+        break;
+    case LLFontGL::VCENTER:
+        y = rect.getCenterY();
+        break;
+    case LLFontGL::BASELINE:
+    case LLFontGL::BOTTOM:
+        y = rect.mBottom;
+        break;
+    default:
+        y = rect.mBottom;
+        break;
+    }
+    return render(fontp, text, begin_offset, x, y, color, halign, valign, style, shadow, max_chars, (S32)rect.getWidth(), right_x, use_ellipses, use_color);
+}
+
+S32 LLFontVertexBuffer::render(
+    const LLFontGL* fontp,
+    const LLWString& text,
+    S32 begin_offset,
     F32 x, F32 y,
     const LLColor4& color,
     LLFontGL::HAlign halign, LLFontGL::VAlign valign,
@@ -117,6 +171,7 @@ void LLFontVertexBuffer::genBuffers(
     bool use_ellipses,
     bool use_color)
 {
+    // todo: add a debug build assert if this triggers too often for to long?
     mBufferList.clear();
 
     gGL.beginList(&mBufferList);
diff --git a/indra/llrender/llfontvertexbuffer.h b/indra/llrender/llfontvertexbuffer.h
index 7c29e1097b..d41c6205ac 100644
--- a/indra/llrender/llfontvertexbuffer.h
+++ b/indra/llrender/llfontvertexbuffer.h
@@ -43,6 +43,32 @@ public:
     S32 render(const LLFontGL* fontp,
         const LLWString& text,
         S32 begin_offset,
+        LLRect rect,
+        const LLColor4& color,
+        LLFontGL::HAlign halign = LLFontGL::LEFT, LLFontGL::VAlign valign = LLFontGL::BASELINE,
+        U8 style = LLFontGL::NORMAL,
+        LLFontGL::ShadowType shadow = LLFontGL::NO_SHADOW,
+        S32 max_chars = S32_MAX, S32 max_pixels = S32_MAX,
+        F32* right_x = NULL,
+        bool use_ellipses = false,
+        bool use_color = true);
+
+    S32 render(const LLFontGL* fontp,
+        const LLWString& text,
+        S32 begin_offset,
+        LLRectf rect,
+        const LLColor4& color,
+        LLFontGL::HAlign halign = LLFontGL::LEFT, LLFontGL::VAlign valign = LLFontGL::BASELINE,
+        U8 style = LLFontGL::NORMAL,
+        LLFontGL::ShadowType shadow = LLFontGL::NO_SHADOW,
+        S32 max_chars = S32_MAX,
+        F32* right_x = NULL,
+        bool use_ellipses = false,
+        bool use_color = true);
+
+    S32 render(const LLFontGL* fontp,
+        const LLWString& text,
+        S32 begin_offset,
         F32 x, F32 y,
         const LLColor4& color,
         LLFontGL::HAlign halign = LLFontGL::LEFT, LLFontGL::VAlign valign = LLFontGL::BASELINE,
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 182f61f907..b906563b08 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -1531,6 +1531,7 @@ void LLRender::clearErrors()
 
 void LLRender::beginList(std::list<LLVertexBufferData> *list)
 {
+    llassert(LLGLSLShader::sCurBoundShaderPtr == &gUIProgram);
     flush();
     sBufferDataList = list;
 }
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 11b41730aa..156e300853 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -574,8 +574,9 @@ void LLVertexBufferData::draw()
 {
     if (!mVB)
     {
-        // signal for pushUIMatrix
-        return; // todo: find a better way?
+        llassert(false);
+        // Not supposed to happen, check buffer generation
+        return;
     }
 
     if (mTexName)
diff --git a/indra/llui/llbadge.cpp b/indra/llui/llbadge.cpp
index 399f79ad2e..48489db615 100644
--- a/indra/llui/llbadge.cpp
+++ b/indra/llui/llbadge.cpp
@@ -27,6 +27,8 @@
 #define LLBADGE_CPP
 #include "llbadge.h"
 
+#include "llfontgl.h"
+#include "llfontvertexbuffer.h"
 #include "llscrollcontainer.h"
 #include "lluictrlfactory.h"
 
@@ -103,6 +105,7 @@ LLBadge::LLBadge(const LLBadge::Params& p)
     , mPaddingVert(p.padding_vert)
     , mParentScroller(NULL)
     , mDrawAtParentTop(false)
+    , mFontBuffer(false)
 {
     if (mImage.isNull())
     {
@@ -351,17 +354,17 @@ void LLBadge::draw()
             //
             // Draw the label
             //
-
-            mGLFont->render(mLabel.getWString(),
-                            badge_label_begin_offset,
-                            badge_center_x + mLabelOffsetHoriz,
-                            badge_center_y + mLabelOffsetVert,
-                            mLabelColor % alpha,
-                            LLFontGL::HCENTER, LLFontGL::VCENTER, // centered around the position
-                            LLFontGL::NORMAL, // normal text (not bold, italics, etc.)
-                            LLFontGL::DROP_SHADOW_SOFT,
-                            badge_char_length, badge_pixel_length,
-                            right_position_out, do_not_use_ellipses);
+            mFontBuffer.render(mGLFont,
+                               mLabel.getWString(),
+                               badge_label_begin_offset,
+                               badge_center_x + mLabelOffsetHoriz,
+                               badge_center_y + mLabelOffsetVert,
+                               mLabelColor % alpha,
+                               LLFontGL::HCENTER, LLFontGL::VCENTER, // centered around the position
+                               LLFontGL::NORMAL, // normal text (not bold, italics, etc.)
+                               LLFontGL::DROP_SHADOW_SOFT,
+                               badge_char_length, badge_pixel_length,
+                               right_position_out, do_not_use_ellipses);
         }
     }
 }
diff --git a/indra/llui/llbadge.h b/indra/llui/llbadge.h
index 77fe76f0da..636e2c9ded 100644
--- a/indra/llui/llbadge.h
+++ b/indra/llui/llbadge.h
@@ -34,12 +34,14 @@
 #include "llstring.h"
 #include "lluiimage.h"
 #include "llview.h"
+#include "llfontvertexbuffer.h"
 
 //
 // Declarations
 //
 
 class LLFontGL;
+class LLFontVertexBuffer;
 class LLScrollContainer;
 class LLUICtrlFactory;
 
@@ -144,6 +146,7 @@ private:
     LLUIColor               mBorderColor;
 
     const LLFontGL*         mGLFont;
+    LLFontVertexBuffer      mFontBuffer;
 
     LLPointer< LLUIImage >  mImage;
     LLUIColor               mImageColor;
diff --git a/indra/llui/llbutton.cpp b/indra/llui/llbutton.cpp
index a9f1c10256..d4e5d501db 100644
--- a/indra/llui/llbutton.cpp
+++ b/indra/llui/llbutton.cpp
@@ -43,6 +43,8 @@
 #include "llfloater.h"
 #include "llfloaterreg.h"
 #include "llfocusmgr.h"
+#include "llfontgl.h"
+#include "llfontvertexbuffer.h"
 #include "llwindow.h"
 #include "llnotificationsutil.h"
 #include "llrender.h"
@@ -438,18 +440,6 @@ void LLButton::reshape(S32 width, S32 height, bool called_from_parent)
     }
 }
 
-void LLButton::translate(S32 x, S32 y)
-{
-    LLUICtrl::translate(x, y);
-    mFontBuffer.reset();
-}
-
-void LLButton::setRect(const LLRect& rect)
-{
-    LLUICtrl::setRect(rect);
-    mFontBuffer.reset();
-}
-
 void LLButton::dirtyRect()
 {
     LLUICtrl::dirtyRect();
diff --git a/indra/llui/llbutton.h b/indra/llui/llbutton.h
index 74ed922510..23a3a05e65 100644
--- a/indra/llui/llbutton.h
+++ b/indra/llui/llbutton.h
@@ -34,8 +34,6 @@
 #include "lluictrl.h"
 #include "v4color.h"
 #include "llframetimer.h"
-#include "llfontgl.h"
-#include "llfontvertexbuffer.h"
 #include "lluiimage.h"
 #include "lluistring.h"
 
@@ -56,6 +54,8 @@ S32 round_up(S32 grid, S32 value);
 
 
 class LLUICtrlFactory;
+class LLFontGL;
+class LLFontVertexBuffer;
 
 //
 // Classes
@@ -170,8 +170,6 @@ public:
 
     void onVisibilityChange(bool visible) override;
     void reshape(S32 width, S32 height, bool called_from_parent = true) override;
-    void translate(S32 x, S32 y) override;
-    void setRect(const LLRect& rect) override;
     void dirtyRect() override;
 
     virtual void    onMouseLeave(S32 x, S32 y, MASK mask) override;
@@ -307,9 +305,6 @@ protected:
     commit_signal_t*            mMouseUpSignal;
     commit_signal_t*            mHeldDownSignal;
 
-    const LLFontGL*             mGLFont;
-    LLFontVertexBuffer          mFontBuffer;
-
     S32                         mMouseDownFrame;
     S32                         mMouseHeldDownCount;    // Counter for parameter passed to held-down callback
     F32                         mHeldDownDelay;         // seconds, after which held-down callbacks get called
@@ -392,6 +387,10 @@ protected:
     bool                        mForceFlashing; // Stick flashing color even if button is pressed
     bool                        mHandleRightMouse;
 
+private:
+    const LLFontGL* mGLFont;
+    LLFontVertexBuffer          mFontBuffer;
+
 protected:
     virtual std::string _getSearchText() const
     {
diff --git a/indra/llui/llscrolllistcell.cpp b/indra/llui/llscrolllistcell.cpp
index 7ef2e54429..8b998971b6 100644
--- a/indra/llui/llscrolllistcell.cpp
+++ b/indra/llui/llscrolllistcell.cpp
@@ -30,6 +30,7 @@
 #include "llscrolllistcell.h"
 
 #include "llcheckboxctrl.h"
+#include "llfontvertexbuffer.h"
 #include "llui.h"   // LLUIImage
 #include "lluictrlfactory.h"
 
@@ -156,7 +157,7 @@ S32 LLScrollListIcon::getWidth() const
 }
 
 
-void LLScrollListIcon::draw(const LLColor4& color, const LLColor4& highlight_color)  const
+void LLScrollListIcon::draw(const LLColor4& color, const LLColor4& highlight_color)
 {
     if (mIcon)
     {
@@ -236,7 +237,7 @@ S32 LLScrollListBar::getWidth() const
 }
 
 
-void LLScrollListBar::draw(const LLColor4& color, const LLColor4& highlight_color)   const
+void LLScrollListBar::draw(const LLColor4& color, const LLColor4& highlight_color)
 {
     S32 bar_width = getWidth() - mLeftPad - mRightPad;
     S32 left = (S32)(bar_width - bar_width * mRatio);
@@ -255,6 +256,7 @@ LLScrollListText::LLScrollListText(const LLScrollListCell::Params& p)
     mText(p.label.isProvided() ? p.label() : p.value().asString()),
     mAltText(p.alt_value().asString()),
     mFont(p.font),
+    mFontBuffer(false),
     mColor(p.color),
     mUseColor(p.color.isProvided()),
     mFontAlignment(p.font_halign),
@@ -308,6 +310,19 @@ bool LLScrollListText::needsToolTip() const
     return mFont->getWidth(mText.getWString().c_str()) > getWidth();
 }
 
+void LLScrollListText::setTextWidth(S32 value)
+{
+    mTextWidth = value;
+    mFontBuffer.reset();
+}
+
+void LLScrollListText::setWidth(S32 width)
+{
+    LLScrollListCell::setWidth(width);
+    mTextWidth = width;
+    mFontBuffer.reset();
+}
+
 //virtual
 bool LLScrollListText::getVisible() const
 {
@@ -341,6 +356,7 @@ void LLScrollListText::setColor(const LLColor4& color)
 void LLScrollListText::setText(const LLStringExplicit& text)
 {
     mText = text;
+    mFontBuffer.reset();
 }
 
 void LLScrollListText::setFontStyle(const U8 font_style)
@@ -348,6 +364,13 @@ void LLScrollListText::setFontStyle(const U8 font_style)
     LLFontDescriptor new_desc(mFont->getFontDesc());
     new_desc.setStyle(font_style);
     mFont = LLFontGL::getFont(new_desc);
+    mFontBuffer.reset();
+}
+
+void LLScrollListText::setAlignment(LLFontGL::HAlign align)
+{
+    mFontAlignment = align;
+    mFontBuffer.reset();
 }
 
 //virtual
@@ -375,7 +398,7 @@ const LLSD LLScrollListText::getAltValue() const
 }
 
 
-void LLScrollListText::draw(const LLColor4& color, const LLColor4& highlight_color) const
+void LLScrollListText::draw(const LLColor4& color, const LLColor4& highlight_color)
 {
     LLColor4 display_color;
     if (mUseColor)
@@ -426,17 +449,18 @@ void LLScrollListText::draw(const LLColor4& color, const LLColor4& highlight_col
         start_x = (F32)getWidth() * 0.5f;
         break;
     }
-    mFont->render(mText.getWString(), 0,
-                    start_x, 0.f,
-                    display_color,
-                    mFontAlignment,
-                    LLFontGL::BOTTOM,
-                    0,
-                    LLFontGL::NO_SHADOW,
-                    string_chars,
-                    getTextWidth(),
-                    &right_x,
-                    true);
+    mFontBuffer.render(mFont,
+                       mText.getWString(), 0,
+                       start_x, 0.f,
+                       display_color,
+                       mFontAlignment,
+                       LLFontGL::BOTTOM,
+                       0,
+                       LLFontGL::NO_SHADOW,
+                       string_chars,
+                       getTextWidth(),
+                       &right_x,
+                       true);
 }
 
 //
@@ -475,7 +499,7 @@ LLScrollListCheck::~LLScrollListCheck()
     mCheckBox = NULL;
 }
 
-void LLScrollListCheck::draw(const LLColor4& color, const LLColor4& highlight_color) const
+void LLScrollListCheck::draw(const LLColor4& color, const LLColor4& highlight_color)
 {
     mCheckBox->draw();
 }
@@ -592,7 +616,7 @@ void LLScrollListIconText::setWidth(S32 width)
 }
 
 
-void LLScrollListIconText::draw(const LLColor4& color, const LLColor4& highlight_color)  const
+void LLScrollListIconText::draw(const LLColor4& color, const LLColor4& highlight_color)
 {
     LLColor4 display_color;
     if (mUseColor)
@@ -650,7 +674,9 @@ void LLScrollListIconText::draw(const LLColor4& color, const LLColor4& highlight
         start_icon_x = (S32)(center - (((F32)icon_space + mFont->getWidth(mText.getWString().c_str())) * 0.5f));
         break;
     }
-    mFont->render(mText.getWString(), 0,
+    mFontBuffer.render(
+        mFont,
+        mText.getWString(), 0,
         start_text_x, 0.f,
         display_color,
         mFontAlignment,
diff --git a/indra/llui/llscrolllistcell.h b/indra/llui/llscrolllistcell.h
index c5d785ae52..e7ff5c8424 100644
--- a/indra/llui/llscrolllistcell.h
+++ b/indra/llui/llscrolllistcell.h
@@ -29,6 +29,7 @@
 #define LLSCROLLLISTCELL_H
 
 #include "llfontgl.h"       // HAlign
+#include "llfontvertexbuffer.h"       // HAlign
 #include "llpointer.h"      // LLPointer<>
 #include "lluistring.h"
 #include "v4color.h"
@@ -96,7 +97,7 @@ public:
     LLScrollListCell(const LLScrollListCell::Params&);
     virtual ~LLScrollListCell() {};
 
-    virtual void            draw(const LLColor4& color, const LLColor4& highlight_color) const {};      // truncate to given width, if possible
+    virtual void            draw(const LLColor4& color, const LLColor4& highlight_color) {};      // truncate to given width, if possible
     virtual S32             getWidth() const {return mWidth;}
     virtual S32             getContentWidth() const { return 0; }
     virtual S32             getHeight() const { return 0; }
@@ -127,7 +128,7 @@ class LLScrollListSpacer : public LLScrollListCell
 public:
     LLScrollListSpacer(const LLScrollListCell::Params& p) : LLScrollListCell(p) {}
     /*virtual*/ ~LLScrollListSpacer() {};
-    /*virtual*/ void            draw(const LLColor4& color, const LLColor4& highlight_color) const {}
+    /*virtual*/ void            draw(const LLColor4& color, const LLColor4& highlight_color) {}
 };
 
 /*
@@ -139,7 +140,7 @@ public:
     LLScrollListText(const LLScrollListCell::Params&);
     /*virtual*/ ~LLScrollListText();
 
-    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color) const;
+    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color);
     /*virtual*/ S32     getContentWidth() const;
     /*virtual*/ S32     getHeight() const;
     /*virtual*/ void    setValue(const LLSD& value);
@@ -155,18 +156,20 @@ public:
     /*virtual*/ bool    needsToolTip() const;
 
     S32             getTextWidth() const { return mTextWidth;}
-    void            setTextWidth(S32 value) { mTextWidth = value;}
-    virtual void    setWidth(S32 width) { LLScrollListCell::setWidth(width); mTextWidth = width; }
+    void            setTextWidth(S32 value);
+    virtual void    setWidth(S32 width);
 
     void            setText(const LLStringExplicit& text);
     void            setFontStyle(const U8 font_style);
-    void            setAlignment(LLFontGL::HAlign align) { mFontAlignment = align; }
+    void            setAlignment(LLFontGL::HAlign align);
 
 protected:
+
     LLUIString      mText;
     LLUIString      mAltText;
     S32             mTextWidth;
     const LLFontGL* mFont;
+    LLFontVertexBuffer mFontBuffer;
     LLColor4        mColor;
     LLColor4        mHighlightColor;
     U8              mUseColor;
@@ -188,7 +191,7 @@ class LLScrollListIcon : public LLScrollListCell
 public:
     LLScrollListIcon(const LLScrollListCell::Params& p);
     /*virtual*/ ~LLScrollListIcon();
-    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color) const;
+    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color);
     /*virtual*/ S32     getWidth() const;
     /*virtual*/ S32     getHeight() const;
     /*virtual*/ const LLSD      getValue() const;
@@ -207,7 +210,7 @@ class LLScrollListBar : public LLScrollListCell
 public:
     LLScrollListBar(const LLScrollListCell::Params& p);
     /*virtual*/ ~LLScrollListBar();
-    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color) const;
+    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color);
     /*virtual*/ S32     getWidth() const;
     /*virtual*/ S32     getHeight() const;
     /*virtual*/ const LLSD      getValue() const;
@@ -229,7 +232,7 @@ class LLScrollListCheck : public LLScrollListCell
 public:
     LLScrollListCheck( const LLScrollListCell::Params&);
     /*virtual*/ ~LLScrollListCheck();
-    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color) const;
+    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color);
     /*virtual*/ S32     getHeight() const           { return 0; }
     /*virtual*/ const LLSD  getValue() const;
     /*virtual*/ void    setValue(const LLSD& value);
@@ -264,13 +267,11 @@ class LLScrollListIconText : public LLScrollListText
 public:
     LLScrollListIconText(const LLScrollListCell::Params& p);
     /*virtual*/ ~LLScrollListIconText();
-    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color) const;
+    /*virtual*/ void    draw(const LLColor4& color, const LLColor4& highlight_color);
     /*virtual*/ const LLSD      getValue() const;
     /*virtual*/ void    setValue(const LLSD& value);
 
-
-    S32                 getIconWidth() const;
-    /*virtual*/ void    setWidth(S32 width);/* { LLScrollListCell::setWidth(width); mTextWidth = width - ; }*/
+    /*virtual*/ void    setWidth(S32 width);
 
 private:
     LLPointer<LLUIImage>    mIcon;
diff --git a/indra/newview/llpanelmarketplaceinbox.cpp b/indra/newview/llpanelmarketplaceinbox.cpp
index 35961da579..d10e12d3a8 100644
--- a/indra/newview/llpanelmarketplaceinbox.cpp
+++ b/indra/newview/llpanelmarketplaceinbox.cpp
@@ -52,6 +52,8 @@ LLPanelMarketplaceInbox::LLPanelMarketplaceInbox(const Params& p)
     , mInboxButton(NULL)
     , mInventoryPanel(NULL)
     , mSavedFolderState(NULL)
+    , mLastItemCount(-1)
+    , mLastFreshItemCount(-1)
 {
     mSavedFolderState = new LLSaveFolderState();
     mSavedFolderState->setApply(false);
@@ -253,28 +255,40 @@ void LLPanelMarketplaceInbox::draw()
 
     llassert(mFreshCountCtrl != NULL);
 
-    if (item_count > 0)
+    if (mLastItemCount != item_count)
     {
-        std::string item_count_str = llformat("%d", item_count);
-
-        LLStringUtil::format_map_t args;
-        args["[NUM]"] = item_count_str;
-        mInboxButton->setLabel(getString("InboxLabelWithArg", args));
-
-        // set green text to fresh item count
-        U32 fresh_item_count = getFreshItemCount();
-        mFreshCountCtrl->setVisible((fresh_item_count > 0));
+        mLastItemCount = item_count;
+        if (item_count > 0)
+        {
+            std::string item_count_str = llformat("%d", item_count);
 
-        if (fresh_item_count > 0)
+            LLStringUtil::format_map_t args;
+            args["[NUM]"] = item_count_str;
+            // setLabel is expensive, causes buffer regeneration
+            mInboxButton->setLabel(getString("InboxLabelWithArg", args));
+        }
+        else
         {
-            mFreshCountCtrl->setTextArg("[NUM]", llformat("%d", fresh_item_count));
+            mInboxButton->setLabel(getString("InboxLabelNoArg"));
+
+            mFreshCountCtrl->setVisible(false);
         }
     }
-    else
+
+    if (item_count > 0)
     {
-        mInboxButton->setLabel(getString("InboxLabelNoArg"));
+        // set green text to fresh item count
+        U32 fresh_item_count = getFreshItemCount();
+        if (mLastFreshItemCount != fresh_item_count)
+        {
+            mLastFreshItemCount = fresh_item_count;
+            mFreshCountCtrl->setVisible((fresh_item_count > 0));
 
-        mFreshCountCtrl->setVisible(false);
+            if (fresh_item_count > 0)
+            {
+                mFreshCountCtrl->setTextArg("[NUM]", llformat("%d", fresh_item_count));
+            }
+        }
     }
 
     LLPanel::draw();
diff --git a/indra/newview/llpanelmarketplaceinbox.h b/indra/newview/llpanelmarketplaceinbox.h
index e711bb5e5c..493801b96c 100644
--- a/indra/newview/llpanelmarketplaceinbox.h
+++ b/indra/newview/llpanelmarketplaceinbox.h
@@ -75,6 +75,8 @@ private:
     LLButton *          mInboxButton;
     LLInventoryPanel *  mInventoryPanel;
     LLSaveFolderState*          mSavedFolderState;
+    S32                 mLastItemCount;
+    S32                 mLastFreshItemCount;
 };